1
|
Martins LP, Garcia-Callejas D, Lai HR, Wootton KL, Tylianakis JM. The propagation of disturbances in ecological networks. Trends Ecol Evol 2024; 39:558-570. [PMID: 38402007 DOI: 10.1016/j.tree.2024.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 11/17/2023] [Accepted: 01/25/2024] [Indexed: 02/26/2024]
Abstract
Despite the development of network science, we lack clear heuristics for how far different disturbance types propagate within and across species interaction networks. We discuss the mechanisms of disturbance propagation in ecological networks, and propose that disturbances can be categorized into structural, functional, and transmission types according to their spread and effect on network structure and functioning. We describe the properties of species and their interaction networks and metanetworks that determine the indirect, spatial, and temporal extent of propagation. We argue that the sampling scale of ecological studies may have impeded predictions regarding the rate and extent that a disturbance spreads, and discuss directions to help ecologists to move towards a predictive understanding of the propagation of impacts across interacting communities and ecosystems.
Collapse
Affiliation(s)
- Lucas P Martins
- Centre for Integrative Ecology, School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, Aotearoa New Zealand.
| | - David Garcia-Callejas
- Centre for Integrative Ecology, School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, Aotearoa New Zealand
| | - Hao Ran Lai
- Centre for Integrative Ecology, School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, Aotearoa New Zealand; Bioprotection Aotearoa, School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, Aotearoa New Zealand
| | - Kate L Wootton
- Centre for Integrative Ecology, School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, Aotearoa New Zealand
| | - Jason M Tylianakis
- Centre for Integrative Ecology, School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, Aotearoa New Zealand; Bioprotection Aotearoa, School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, Aotearoa New Zealand
| |
Collapse
|
2
|
Suzuki Y, Economo EP. The Stability of Competitive Metacommunities Is Insensitive to Dispersal Connectivity in a Fluctuating Environment. Am Nat 2024; 203:668-680. [PMID: 38781525 DOI: 10.1086/729601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
AbstractMaintaining the stability of ecological communities is critical for conservation, yet we lack a clear understanding of what attributes of metacommunity structure control stability. Some theories suggest that greater dispersal promotes metacommunity stability by stabilizing local populations, while others suggest that dispersal synchronizes fluctuations across patches and leads to global instability. These effects of dispersal on stability may be mediated by metacommunity structure: the number of patches, the pattern of connections across patches, and levels of spatiotemporal correlation in the environment. Thus, we need theory to investigate metacommunity dynamics under different spatial structures and ecological scenarios. Here, we use simulations to investigate whether stability is primarily affected by connectivity, including dispersal rate and topology of connectivity network, or by mechanisms related to the number of patches. We find that in competitive metacommunities with environmental stochasticity, network topology has little effect on stability on the metacommunity scale even while it could change spatial diversity patterns. In contrast, the number of connected patches is the dominant factor promoting stability through averaging stochastic fluctuations across more patches, rather than due to more habitat heterogeneity per se. These results broaden our understanding of how metacommunity structure changes metacommunity stability, which is relevant for designing effective conservation strategies.
Collapse
|
3
|
Hovestadt T, Poethke HJ, Müller J, Mitesser O. Species Diversity and Habitat Fragmentation Per Se: The Influence of Local Extinctions and Species Clustering. Am Nat 2024; 203:655-667. [PMID: 38781529 DOI: 10.1086/729620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
AbstractAnthropogenic fragmentation of habitat is considered to be a critical factor contributing to the decline of species. However, a general consensus on the degree to which habitat loss and what has been called "habitat fragmentation per se" contribute to the loss of species diversity has not yet emerged. For empirical and theoretical reasons the topic has recently attracted renewed attention, thus reviving the "single large or several small" (SLOSS) debate. To study the effect of fragmentation per se, we use a spatially explicit and continuous, competitively neutral simulation model with immigration from a regional pool. The model accounts for the influence of ecological drift and intrafragment species clustering (due to limited dispersal) on local (plot) and global (landscape) diversity. We find that fragmentation increases global diversity but decreases local diversity, prominently so if fragments become more isolated. Cluster formation is a key mechanism reducing local diversity. By adding external disturbance events that lead to the occasional extinction of entire communities in habitat fragments, we show that the combined effect of such extinctions and cluster formation can create nonlinear interactive effects of fragmentation and fragment isolation on diversity patterns. We conclude that while in most cases fragmentation will decrease local and increase landscape diversity, universal predictions concerning the SLOSS debate should be taken with care.
Collapse
|
4
|
Gross CP, Stachowicz JJ. Extending trait dispersion across trophic levels: Predator assemblages act as top-down filters on prey communities. Ecology 2024:e4320. [PMID: 38768562 DOI: 10.1002/ecy.4320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 01/03/2024] [Accepted: 03/14/2024] [Indexed: 05/22/2024]
Abstract
Studies of community assembly typically focus on the effects of abiotic environmental filters and stabilizing competition on functional trait dispersion within single trophic levels. Predation is a well-known driver of community diversity and composition, yet the role of functionally diverse predator communities in filtering prey community traits has received less attention. We examined functionally diverse communities of predators (fishes) and prey (epifaunal crustaceans) in eelgrass (Zostera marina) beds in two northern California estuaries to evaluate the filtering effects of predator traits on community assembly and how filters acting on predators influence their ability to mediate prey community assembly. Fish traits related to bottom orientation were correlated with more clustered epifauna communities, and epifauna were generally overdispersed while fishes were clustered, suggesting prey may be pushed to disparate areas of trait space to avoid capture by benthic sit-and-wait predators. We also found correlations between the trait dispersions of predator and prey communities that strengthened after accounting for the effects of habitat filters on predator dispersion, suggesting that habitat filtering effects on predator species pools may hinder their ability to affect prey community assembly. Our results present compelling observational evidence that specific predator traits have measurable impacts on the community assembly of prey, inviting experimental tests of predator trait means on community assembly and explicit comparisons of how the relative effects of habitat filters and intraguild competition on predators impact their ability to affect prey community assembly. Integrating our understanding of traits at multiple trophic levels can help us better predict the impacts of community composition on food web dynamics as regional species pools shift with climate change and anthropogenic introductions.
Collapse
Affiliation(s)
- Collin P Gross
- Department of Evolution and Ecology, University of California, Davis, California, USA
| | - John J Stachowicz
- Department of Evolution and Ecology, University of California, Davis, California, USA
| |
Collapse
|
5
|
Khattar G, Peres-Neto PR. The Geography of Metacommunities: Landscape Characteristics Drive Geographic Variation in the Assembly Process through Selecting Species Pool Attributes. Am Nat 2024; 203:E142-E156. [PMID: 38635361 DOI: 10.1086/729423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
AbstractThe nonrandom association between landscape characteristics and the dominant life history strategies observed in species pools is a typical pattern in nature. Here, we argue that these associations determine predictable changes in the relative importance of assembly mechanisms along broadscale geographic gradients (i.e., the geographic context of metacommunity dynamics). To demonstrate that, we employed simulation models in which groups of species with the same initial distribution of niche breadths and dispersal abilities interacted across a wide range of landscapes with contrasting characteristics. By assessing the traits of dominant species in the species pool in each landscape type, we determined how different landscape characteristics select for different life history strategies at the metacommunity level. We analyzed the simulated data using the same analytical approaches used in the study of empirical metacommunities to derive predictions about the causal relationships between landscape characteristics and dominant life histories in species pools, as well as their reciprocal influence on empirical inferences regarding the assembly process. We provide empirical support for these predictions by contrasting the assembly of moth metacommunities in a tropical versus a temperate mountainous landscape. Together, our model framework and empirical analyses demonstrate how the geographic context of metacommunities influences our understanding of community assembly across broadscale ecological gradients.
Collapse
|
6
|
Niu X, Wang P, Xie Z, Gao M, Qian S, Saifutdinov R, Aspe NM, Wu D, Guan P. Soil nematode metacommunities in different land covers: Assessment at the local and regional scales. Ecol Evol 2024; 14:e11468. [PMID: 38799394 PMCID: PMC11116945 DOI: 10.1002/ece3.11468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 05/05/2024] [Accepted: 05/08/2024] [Indexed: 05/29/2024] Open
Abstract
The metacommunity theory enhances our understanding of how ecological processes regulate community structure. Yet, unraveling the complexities of soil nematode metacommunity structures across various spatial scales and determining the factors influencing these patterns remains challenging. Therefore, we conducted an investigation on soil nematode metacommunities spanning from north to south in the Northeastern China. Our aim was to test whether nematode metacommunities were structured by different drivers under three land covers (i.e., farmland, grassland and woodland) at the local and regional scales. The results revealed that the Clementsian, Gleasonian and their quasi-structures of soil nematodes collectively accounted for 93% of the variation across the three land covers at the local and regional scales. These structures suggest that the soil nematode metacommunities in the Northeast China responded to fluctuations in environmental gradients. At the local scale, metacommunities were primarily shaped by biological interactions. At the regional scale, environmental heterogeneity, dispersal limitation and biological interactions all contributed to nematode metacommunities. Meanwhile, biological interactions under three land covers were represented within different trophic groups, with plant parasites predominant in farmlands and bacterivores in grasslands and woodlands. In conclusion, the metacommunity structures of soil nematodes remain stable at different spatial scales and land covers. Biological interactions are widespread among nematodes regardless of changes in spatial scales and land covers. This study reveals the importance of nematode sensitivity to the environment and biological interactions in shaping the nematode metacommunities, potentially enhancing our understanding of the spatial patterns of nematode metacommunities.
Collapse
Affiliation(s)
- Ximei Niu
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of EnvironmentNortheast Normal UniversityChangchunChina
| | - Ping Wang
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of EnvironmentNortheast Normal UniversityChangchunChina
- Key Laboratory of Vegetation Ecology, Ministry of EducationNortheast Normal UniversityChangchunChina
| | - Zhijing Xie
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of EnvironmentNortheast Normal UniversityChangchunChina
- Key Laboratory of Vegetation Ecology, Ministry of EducationNortheast Normal UniversityChangchunChina
| | - Meixiang Gao
- Department of Geography and Spatial Information TechniquesNingbo UniversityNingboChina
| | - Siru Qian
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of EnvironmentNortheast Normal UniversityChangchunChina
| | - Ruslan Saifutdinov
- Laboratory for Soil Ecological FunctionsA.N. Severtsov Institute of Ecology and Evolution, Russian Academy of SciencesMoscowRussia
| | - Nonillon M. Aspe
- College of Marine and Allied SciencesMindanao State University at NaawanNaawanPhilippines
| | - Donghui Wu
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of EnvironmentNortheast Normal UniversityChangchunChina
- Key Laboratory of Vegetation Ecology, Ministry of EducationNortheast Normal UniversityChangchunChina
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchunChina
| | - Pingting Guan
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of EnvironmentNortheast Normal UniversityChangchunChina
- Key Laboratory of Vegetation Ecology, Ministry of EducationNortheast Normal UniversityChangchunChina
| |
Collapse
|
7
|
Gálvez Á, Peres-Neto PR, Castillo-Escrivà A, Bonilla F, Camacho A, García-Roger EM, Iepure S, Miralles J, Monrós JS, Olmo C, Picazo A, Rojo C, Rueda J, Sasa M, Segura M, Armengol X, Mesquita-Joanes F. Spatial versus spatio-temporal approaches for studying metacommunities: a multi-taxon analysis in Mediterranean and tropical temporary ponds. Proc Biol Sci 2024; 291:20232768. [PMID: 38565154 PMCID: PMC10987233 DOI: 10.1098/rspb.2023.2768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 03/04/2024] [Indexed: 04/04/2024] Open
Abstract
Prior research on metacommunities has largely focused on snapshot surveys, often overlooking temporal dynamics. In this study, our aim was to compare the insights obtained from metacommunity analyses based on a spatial approach repeated over time, with a spatio-temporal approach that consolidates all data into a single model. We empirically assessed the influence of temporal variation in the environment and spatial connectivity on the structure of metacommunities in tropical and Mediterranean temporary ponds. Employing a standardized methodology across both regions, we surveyed multiple freshwater taxa in three time periods within the same hydrological year from multiple temporary ponds in each region. To evaluate how environmental, spatial and temporal influences vary between the two approaches, we used nonlinear variation partitioning analyses based on generalized additive models. Overall, this study underscores the importance of adopting spatio-temporal analytics to better understand the processes shaping metacommunities. While the spatial approach suggested that environmental factors had a greater influence, our spatio-temporal analysis revealed that spatial connectivity was the primary driver influencing metacommunity structure in both regions. Temporal effects were equally important as environmental effects, suggesting a significant role of ecological succession in metacommunity structure.
Collapse
Affiliation(s)
- Ángel Gálvez
- Cavanilles Institute for Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Valencia, Spain
| | | | - Andreu Castillo-Escrivà
- Cavanilles Institute for Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Valencia, Spain
| | - Fabián Bonilla
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, 13, Costa Rica
| | - Antonio Camacho
- Cavanilles Institute for Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Valencia, Spain
| | - Eduardo M. García-Roger
- Cavanilles Institute for Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Valencia, Spain
| | - Sanda Iepure
- Department of Taxonomy and Ecology, University of Babes—Bolyia, Cluj Napoca, Romania
- Emil Racovitza Institute of Speleology, Cluj Napoca, Romania
| | - Javier Miralles
- Cavanilles Institute for Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Valencia, Spain
| | - Juan S. Monrós
- Cavanilles Institute for Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Valencia, Spain
| | - Carla Olmo
- Centro GEMA—Genómica, Ecología & Medio Ambiente, Universidad Mayor, Santiago, Chile
- GRECO, Institute of Aquatic Ecology, University of Girona, Girona, Spain
| | - Antonio Picazo
- Cavanilles Institute for Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Valencia, Spain
| | - Carmen Rojo
- Cavanilles Institute for Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Valencia, Spain
| | - Juan Rueda
- Cavanilles Institute for Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Valencia, Spain
| | - Mahmood Sasa
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, 13, Costa Rica
- Museo de Zoología, Centro de Investigación en Biodiversidad y Ecología Tropical, Universidad de Costa Rica, San Jose, Costa Rica
| | - Mati Segura
- Cavanilles Institute for Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Valencia, Spain
| | - Xavier Armengol
- Cavanilles Institute for Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Valencia, Spain
| | - Francesc Mesquita-Joanes
- Cavanilles Institute for Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Valencia, Spain
| |
Collapse
|
8
|
Pontarp M, Runemark A, Friberg M, Opedal ØH, Persson AS, Wang L, Smith HG. Evolutionary plant-pollinator responses to anthropogenic land-use change: impacts on ecosystem services. Biol Rev Camb Philos Soc 2024; 99:372-389. [PMID: 37866400 DOI: 10.1111/brv.13026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 10/24/2023]
Abstract
Agricultural intensification at field and landscape scales, including increased use of agrochemicals and loss of semi-natural habitats, is a major driver of insect declines and other community changes. Efforts to understand and mitigate these effects have traditionally focused on ecological responses. At the same time, adaptations to pesticide use and habitat fragmentation in both insects and flowering plants show the potential for rapid evolution. Yet we lack an understanding of how such evolutionary responses may propagate within and between trophic levels with ensuing consequences for conservation of species and ecological functions in agroecosystems. Here, we review the literature on the consequences of agricultural intensification on plant and animal evolutionary responses and interactions. We present a novel conceptualization of evolutionary change induced by agricultural intensification at field and landscape scales and emphasize direct and indirect effects of rapid evolution on ecosystem services. We exemplify by focusing on economically and ecologically important interactions between plants and pollinators. We showcase available eco-evolutionary theory and plant-pollinator modelling that can improve predictions of how agricultural intensification affects interaction networks, and highlight available genetic and trait-focused methodological approaches. Specifically, we focus on how spatial genetic structure affects the probability of propagated responses, and how the structure of interaction networks modulates effects of evolutionary change in individual species. Thereby, we highlight how combined trait-based eco-evolutionary modelling, functionally explicit quantitative genetics, and genomic analyses may shed light on conditions where evolutionary responses impact important ecosystem services.
Collapse
Affiliation(s)
- Mikael Pontarp
- Department of Biology, Lund University, Sölvegatan 37, Lund, 22362, Sweden
| | - Anna Runemark
- Department of Biology, Lund University, Sölvegatan 37, Lund, 22362, Sweden
| | - Magne Friberg
- Department of Biology, Lund University, Sölvegatan 37, Lund, 22362, Sweden
| | - Øystein H Opedal
- Department of Biology, Lund University, Sölvegatan 37, Lund, 22362, Sweden
| | - Anna S Persson
- Centre for Environmental and Climate Science (CEC), Lund University, Sölvegatan 37, Lund, 22362, Sweden
| | - Lingzi Wang
- Centre for Environmental and Climate Science (CEC), Lund University, Sölvegatan 37, Lund, 22362, Sweden
- School of Mathematical Sciences, University of Southampton, 58 Salisbury Rd, Southampton, SO17 1BJ, UK
| | - Henrik G Smith
- Department of Biology, Lund University, Sölvegatan 37, Lund, 22362, Sweden
- Centre for Environmental and Climate Science (CEC), Lund University, Sölvegatan 37, Lund, 22362, Sweden
| |
Collapse
|
9
|
Moisset de Espanés P, Ramos-Jiliberto R. Both local stability and dispersal contribute to metacommunity sensitivity to asynchronous habitat availability. Sci Rep 2024; 14:6273. [PMID: 38491098 PMCID: PMC10943024 DOI: 10.1038/s41598-024-56632-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 03/08/2024] [Indexed: 03/18/2024] Open
Abstract
The stability of isolated communities depends on the complexity of their foodwebs. However, it remains unclear how local stability interacts with dispersal in multitrophic metacommunities to shape biodiversity patterns. This lack of understanding is deeper in the more realistic frame of landscapes that exhibit non-trivial and time-varying structures. Therefore, in this study, we aim to evaluate the influence of local stabilizing factors versus dispersal in determining the sensitivity of metacommunity biodiversity to increasing asynchrony of site availability. Additionally, we assess the role of foodweb complexity and landscape structure as modulating factors. To accomplish our goals we developed a model based on random matrices for local communities, which are linked by stochastic dispersal over explicit dynamic landscapes. We ran numerical simulations and computed the effect sizes of foodweb temperature, self-limitation, dispersal ability, and all pairwise combinations, on the sensitivity of biodiversity to landscape asynchrony. In our experiments we explored gradients of species richness, foodweb connectance, number of sites, and landscape modularity. Our results showed that asynchrony among site availability periods reduced α -diversity and increased β -diversity. Asynchrony increased γ -diversity at high dispersal rates. Both local and regional stabilizing factors determined the sensitivity of metacommunities to landscape asynchrony. Local factors were more influential in landscapes with fewer sites and lower modularity, as well as in metacommunities composed of complex foodwebs. This research offers insights into the dynamics of metacommunities in dynamic landscapes, providing valuable knowledge about the interplay between local and regional factors in shaping ecological stability and species persistence.
Collapse
Affiliation(s)
- Pablo Moisset de Espanés
- Centro de Biotecnología y Bioingeniería, Universidad de Chile, Av. Beaucheff 851, Santiago, Chile
| | - Rodrigo Ramos-Jiliberto
- GEMA Center for Genomics, Ecology and Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile.
| |
Collapse
|
10
|
Savary P, Lessard JP, Peres-Neto PR. Heterogeneous dispersal networks to improve biodiversity science. Trends Ecol Evol 2024; 39:229-238. [PMID: 37891075 DOI: 10.1016/j.tree.2023.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 09/29/2023] [Accepted: 10/05/2023] [Indexed: 10/29/2023]
Abstract
Dispersal has a key role in shaping spatial patterns of biodiversity, yet its spatial heterogeneity is often overlooked in biodiversity analyses and management strategies. Properly parameterised heterogeneous dispersal networks capture the complex interplay between landscape structure and species-specific dispersal capacities. However, this heterogeneity is recurrently neglected when studying the processes underlying biodiversity variation. To address this gap, we introduce a conceptual framework detailing the fundamental processes driving dispersal heterogeneity and its effects on biodiversity dynamics. We propose methods to parameterise heterogeneous dispersal networks, facilitating their integration into commonly used quantitative frameworks for biodiversity analyses. By considering the architecture of heterogeneous dispersal networks, we demonstrate their critical role in guiding biodiversity management strategies.
Collapse
Affiliation(s)
- Paul Savary
- Department of Biology, Concordia University, 7141 Sherbrooke Street West, Montreal, QC, H4B 1R6, Canada.
| | - Jean-Philippe Lessard
- Department of Biology, Concordia University, 7141 Sherbrooke Street West, Montreal, QC, H4B 1R6, Canada
| | - Pedro R Peres-Neto
- Department of Biology, Concordia University, 7141 Sherbrooke Street West, Montreal, QC, H4B 1R6, Canada
| |
Collapse
|
11
|
Juvigny-Khenafou NPD, Burgazzi G, Steiner N, Harvey E, Terui A, Piggott J, Manfrin A, Feckler A, Leese F, Schäfer RB. Effects of flow reduction and artificial light at night (ALAN) on litter decomposition and invertebrate communities in streams: A flume experiment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168836. [PMID: 38016568 DOI: 10.1016/j.scitotenv.2023.168836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/19/2023] [Accepted: 11/22/2023] [Indexed: 11/30/2023]
Abstract
River ecosystems are heavily impacted by multiple stressors, where effects can cascade downstream of point sources. However, a spatial approach to assess the effects of multiple stressors is missing. We assessed the local and downstream effects on litter decomposition, and associated invertebrate communities of two stressors: flow reduction and artificial light at night (ALAN). We used an 18-flow-through mesocosm system consisting of two tributaries, where we applied the stressors, merging in a downstream section. We assessed the changes in decomposition rate and invertebrate community structure in leaf bags. We found no effect of ALAN or its interaction with flow reduction on the litter decomposition or the invertebrate community in the tributaries. Flow reduction alone led to a 14.8 % reduction in decomposition rate in the tributaries. We recorded no effect of flow reduction on the macroinvertebrates community composition in the litter bags. We also observed no effects of the spatial arrangement of the stressors on the litter decomposition and macroinvertebrate community structure downstream. Overall, our results suggest the impact of stressors on litter decomposition and macroinvertebrate communities remained local in our experiment. Our work thus calls for further studies to identify the mechanisms and the conditions under which spatial effects dominate over local processes.
Collapse
Affiliation(s)
- Noël P D Juvigny-Khenafou
- iES, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Landau in der Pfalz, Germany.
| | - Gemma Burgazzi
- iES, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Landau in der Pfalz, Germany
| | - Nikita Steiner
- iES, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Landau in der Pfalz, Germany
| | - Eric Harvey
- Centre de Recherche sur les Interactions Bassins-Versants, Écosystèmes Aquatiques (RIVE) Université du Québec à Trois-Rivières, Canada
| | - Akira Terui
- Department of Biology, University of North Carolina at Greensboro, Greensboro, USA
| | - Jeremy Piggott
- Trinity Centre for the Environment & Discipline of Zoology, School of Natural Sciences, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Alessandro Manfrin
- iES, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Landau in der Pfalz, Germany
| | - Alexander Feckler
- iES, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Landau in der Pfalz, Germany; Eußerthal Ecosystem Research Station, RPTU Kaiserslautern-Landau, Landau in der Pfalz, Germany
| | - Florian Leese
- Aquatic Ecosystem Research, University of Duisburg-Essen, Essen, Germany
| | - Ralf B Schäfer
- iES, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Landau in der Pfalz, Germany
| |
Collapse
|
12
|
Liu G, Qi X, Lin Z, Lv Y, Khan S, Qu X, Jin B, Wu M, Oduro C, Wu N. Comparison of different macroinvertebrates bioassessment indices in a large near-natural watershed under the context of metacommunity theory. Ecol Evol 2024; 14:e10896. [PMID: 38322009 PMCID: PMC10844709 DOI: 10.1002/ece3.10896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/26/2023] [Accepted: 12/04/2023] [Indexed: 02/08/2024] Open
Abstract
The metacommunity theory proposes that community structure and biodiversity are influenced by both local processes (such as environmental filtering) and regional processes (such as dispersal). Despite the extensive use of traditional bioassessments based on species-environment relationships, the impact of dispersal processes on these assessments has been largely overlooked. This study aims to compare correlations between various bioassessment indices, including Shannon Weiner (H'), Biological Monitoring Working Party (BMWP), average score per taxon (ASPT), biotic index (BI), and EPT taxa index (EPT), based on macroinvertebrates collected from 147 sampling sites in a subtropical Chinese near-natural catchment. Modified indices were calculated by removing species strongly influenced by dispersal processes to address the influence of dispersal processes. Their relationship with environmental factors was then compared to the original indices. The study employed random forest regression (RFR) to compare the explanatory power of environmental factors using the two sets of indices. The spearman rank correlation analysis was conducted to examine the correlation between indices and environmental factors. The river health assessment was performed based on both modified and original indices. The results reveal significant differences between original and modified indices (especially H' and BI) providing a more accurate reflection of environmental conditions. Furthermore, the sensitivity of the different indices to various environmental factors varied, leading to differences in the bioassessment results between the modified and the original indices. Notably, original H', BMWP, and ASPT overestimated the bioassessment results, whereas the original BI underestimated them. These findings offer valuable insights into bioassessment and river health assessment evaluation within the catchment and other interconnected freshwater ecosystems, such as lakes, reservoirs, and wetlands. Our study underscores the importance of assessing and mitigating the impact of dispersal processes on bioassessment to obtain a more precise representation of the status of freshwater ecosystems.
Collapse
Affiliation(s)
- Guohao Liu
- Department of Geography and Spatial Information TechniquesNingbo UniversityNingboChina
- Zhejiang Collaborative Innovation Center & Ningbo Universities Collaborative Innovation Center for Land and Marine Spatial Utilization and Governance ResearchNingbo UniversityNingboChina
| | - Xinxin Qi
- Department of Geography and Spatial Information TechniquesNingbo UniversityNingboChina
- Zhejiang Collaborative Innovation Center & Ningbo Universities Collaborative Innovation Center for Land and Marine Spatial Utilization and Governance ResearchNingbo UniversityNingboChina
| | - Zongwei Lin
- Department of Geography and Spatial Information TechniquesNingbo UniversityNingboChina
- Zhejiang Collaborative Innovation Center & Ningbo Universities Collaborative Innovation Center for Land and Marine Spatial Utilization and Governance ResearchNingbo UniversityNingboChina
| | - Yuanyuan Lv
- Department of Geography and Spatial Information TechniquesNingbo UniversityNingboChina
- Zhejiang Collaborative Innovation Center & Ningbo Universities Collaborative Innovation Center for Land and Marine Spatial Utilization and Governance ResearchNingbo UniversityNingboChina
| | - Sangar Khan
- Department of Geography and Spatial Information TechniquesNingbo UniversityNingboChina
- Zhejiang Collaborative Innovation Center & Ningbo Universities Collaborative Innovation Center for Land and Marine Spatial Utilization and Governance ResearchNingbo UniversityNingboChina
| | - Xiaodong Qu
- State Key Laboratory of Simulation and Regulation of Water Cycle in River BasinChina Institute of Water Resources and Hydropower ResearchBeijingChina
| | - Binsong Jin
- College of Life and Environmental SciencesHangzhou Normal UniversityHangzhouChina
| | - Ming Wu
- Wetland Ecosystem Research Station of Hangzhou Bay, Research Institute of Subtropical ForestryChinese Academy of ForestryHangzhouChina
| | - Collins Oduro
- Department of Geography and Spatial Information TechniquesNingbo UniversityNingboChina
- Zhejiang Collaborative Innovation Center & Ningbo Universities Collaborative Innovation Center for Land and Marine Spatial Utilization and Governance ResearchNingbo UniversityNingboChina
| | - Naicheng Wu
- Department of Geography and Spatial Information TechniquesNingbo UniversityNingboChina
- Zhejiang Collaborative Innovation Center & Ningbo Universities Collaborative Innovation Center for Land and Marine Spatial Utilization and Governance ResearchNingbo UniversityNingboChina
| |
Collapse
|
13
|
Gordon SCC, Martin JGA, Kerr JT. Dispersal mediates trophic interactions and habitat connectivity to alter metacommunity composition. Ecology 2024; 105:e4215. [PMID: 38037245 DOI: 10.1002/ecy.4215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 09/14/2023] [Accepted: 10/19/2023] [Indexed: 12/02/2023]
Abstract
Dispersal contributes vitally to metacommunity structure. However, interactions between dispersal and other key processes have rarely been explored, particularly in the context of multitrophic metacommunities. We investigated such a metacommunity in naturally fragmented habitats populated by butterfly species (whose dispersal capacities were previously assessed), flowering plants, and butterfly predators. Using data on butterfly species abundance, floral abundance, and predation (on experimentally placed clay butterfly models), we asked how dispersal ability mediates interactions with predators, mutualists, and the landscape matrix. In contrast to expectations, high densities of strong dispersers were found in more isolated sites and sites with low floral resource density, while intermediate dispersers maintained similar densities across isolation and floral gradients, and higher densities of poor dispersers were found in more connected sites and sites with higher floral density. These findings raise questions about how strong dispersers experience the landscape matrix and the quality of isolated and low-resource sites. Strong dispersers were able to escape habitat patches with high predation, while intermediate dispersers maintained similar densities along a predation gradient, and poor dispersers occurred at high densities in these patches, exposing them to interactions with predators. This work demonstrates that species that vary in dispersal capacities interact differently with predators and mutualist partners in a landscape context, shaping metacommunity composition.
Collapse
Affiliation(s)
- Susan C C Gordon
- Department of Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Julien G A Martin
- Department of Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Jeremy T Kerr
- Department of Biology, University of Ottawa, Ottawa, Ontario, Canada
| |
Collapse
|
14
|
Jeliazkov A, Chase JM. When Do Traits Tell More Than Species about a Metacommunity? A Synthesis across Ecosystems and Scales. Am Nat 2024; 203:E1-E18. [PMID: 38207141 DOI: 10.1086/727471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
AbstractLinking species traits with the variation in species assemblages across habitats has often proved useful for developing a more mechanistic understanding of species distributions in metacommunities. However, summarizing the rich tapestry of a species in all of its nuance with a few key ecological traits can also lead to an abstraction that provides less predictability than when using taxonomy alone. As a further complication, taxonomic and functional diversities can be inequitably compared, either by integrating taxonomic-level information into the calculation of how functional aspects of communities vary or by detecting spurious trait-environment relationships. To remedy this, we here synthesize analyses of 80 datasets on different taxa, ecosystems, and spatial scales that include information on abundance or presence/absence of species across sites with variable environmental conditions and the species' traits. By developing analyses that treat functional and taxonomic diversity equitably, we ask when functional diversity helps to explain metacommunity structure. We found that patterns of functional diversity explained metacommunity structure and response to environmental variation in only 25% of the datasets using a multitrait approach but up to 59% using a single-trait approach. Nevertheless, an average of only 19% (interquartile range = 0%-29%) of the traits showed a significant signal across environmental gradients. Species-level traits, as typically collected and analyzed through functional diversity patterns, often do not bring predictive advantages over what the taxonomic information already holds. While our assessment of a limited advantage of using traits to explain variation in species assemblages was largely true across ecosystems, traits played a more useful role in explaining variation when many traits were used and when trait constructs were more related to species' status, life history, and mobility. We propose future research directions to make trait-based approaches and data more helpful for inference in metacommunity ecology.
Collapse
|
15
|
Baldan D, Cunillera-Montcusí D, Funk A, Piniewski M, Cañedo-Argüelles M, Hein T. The effects of longitudinal fragmentation on riverine beta diversity are modulated by fragmentation intensity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166703. [PMID: 37683866 DOI: 10.1016/j.scitotenv.2023.166703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/17/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023]
Abstract
The loss of longitudinal connectivity affects river systems globally, being one of the leading causes of the freshwater biodiversity crisis. Barriers alter the dispersal of aquatic organisms and limit the exchange of species between local communities, disrupting metacommunity dynamics. However, the interplay between connectivity losses due to dams and other drivers of metacommunity structure, such as the configuration of the river network, needs to be explored. In this paper, we analyzed the response of fish communities to the network position and the fragmentation induced by dams while controlling for human pressures and environmental gradients. We studied three large European catchments covering a fragmentation gradient: Upper Danube (Austrian section), Ebro (Spain), and Odra/Oder (Poland). We quantified fragmentation through reach-scaled connectivity indices that account for the position of barriers along the dendritic network and the dispersal capacity of the organisms. We used generalized linear models to explain species richness and Local Contributions to Beta Diversity (LCBD) and multilinear regressions on the distance matrix to describe Beta Diversity and its Replacement and Richness Difference components. Results show that species richness was not affected by fragmentation. Network centrality metrics were relevant drivers of beta diversity for catchments with lower fragmentation (Ebro, Odra), and fragmentation indices were strong beta diversity predictors for the catchment with higher fragmentation (Danube). We conclude that in highly fragmented catchments, the effects of network centrality/isolation on biodiversity could be masked by the effects of dam fragmentation. In such catchments, metapopulation and metacommunity dynamics can be strongly altered by barriers, and the restoration of longitudinal connectivity (i.e. the natural centrality/isolation gradient) is urgent to prevent local extinctions.
Collapse
Affiliation(s)
- Damiano Baldan
- Italian Institute for Environmental Protection and Reaserch (ISPRA), Campo S. Provolo, 4665, 30122 Venezia, Italy; National Institute of Oceanography and Applied Geophysics - OGS, Trieste, Italy.
| | - David Cunillera-Montcusí
- FEHM-Lab (Freshwater Ecology, Hydrology and Management), Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona (UB), Diagonal 643, 08028 Barcelona, Spain; GRECO, Institute of Aquatic Ecology, University of Girona, Girona, Spain; Departamento de Ecología y Gestión Ambiental, Centro Universitario Regional del Este (CURE), Universidad de la República, Tacuarembó s/n, Maldonado, Montevideo, Uruguay
| | - Andrea Funk
- Christian Doppler Laboratory for Meta Ecosystem Dynamics in Riverine Landscapes, Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, Gregor Mendel Str. 33, 1180 Vienna, Austria; WasserCluster Lunz - Biologische Station, Dr. Carl-Kupelwieser-Prom. 5, 3293 Lunz am See, Austria
| | - Mikołaj Piniewski
- Department of Hydrology, Meteorology and Water Management, Warsaw University of Life Sciences, Nowoursynowska 159, 02-776 Warszawa, Poland
| | - Miguel Cañedo-Argüelles
- FEHM-Lab (Freshwater Ecology, Hydrology and Management), Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Carrer de Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Thomas Hein
- Christian Doppler Laboratory for Meta Ecosystem Dynamics in Riverine Landscapes, Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, Gregor Mendel Str. 33, 1180 Vienna, Austria; WasserCluster Lunz - Biologische Station, Dr. Carl-Kupelwieser-Prom. 5, 3293 Lunz am See, Austria.
| |
Collapse
|
16
|
Gillespie RG, Bik HM, Hickerson MJ, Krehenwinkel H, Overcast I, Rominger AJ. Insights into Ecological & Evolutionary Processes via community metabarcoding. Mol Ecol 2023; 32:6083-6092. [PMID: 37999451 DOI: 10.1111/mec.17208] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 10/05/2023] [Accepted: 11/03/2023] [Indexed: 11/25/2023]
Affiliation(s)
- Rosemary G Gillespie
- Department of Environmental Science, Policy, and Management, University of California, Berkeley, California, USA
| | - Holly M Bik
- Department of Marine Sciences and Institute of Bioinformatics, University of Georgia, Athens, Georgia, USA
| | - Michael J Hickerson
- Graduate Center of the City University of New York, New York City, New York, USA
- Biology Department, City College of New York, New York City, New York, USA
- Division of Invertebrate Zoology, American Museum of Natural History, New York City, New York, USA
| | | | - Isaac Overcast
- School of Biology and Ecology, University of Maine, Orono, Maine, USA
- Department of Vertebrate Zoology, Division of Invertebrate Zoology, American Museum of Natural History, New York City, New York, USA
- California Academy of Sciences, San Francisco, California, USA
| | - Andrew J Rominger
- School of Biology and Ecology, University of Maine, Orono, Maine, USA
- School of Life Sciences, University of Hawai'i at Mānoa, Honolulu, Hawaii, USA
| |
Collapse
|
17
|
Kiemel K, Weithoff G, Tiedemann R. DNA metabarcoding reveals impact of local recruitment, dispersal, and hydroperiod on assembly of a zooplankton metacommunity. Mol Ecol 2023; 32:6190-6209. [PMID: 35869804 DOI: 10.1111/mec.16627] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 07/14/2022] [Accepted: 07/18/2022] [Indexed: 11/25/2023]
Abstract
Understanding the environmental impact on the assembly of local communities in relation to their spatial and temporal connectivity is still a challenge in metacommunity ecology. This study aims to unravel underlying metacommunity processes and environmental factors that result in observed zooplankton communities. Unlike most metacommunity studies, we jointly examine active and dormant zooplankton communities using a DNA metabarcoding approach to overcome limitations of morphological species identification. We applied two-fragment (COI and 18S) metabarcoding to monitor communities of 24 kettle holes over a two-year period to unravel (i) spatial and temporal connectivity of the communities, (ii) environmental factors influencing local communities, and (iii) dominant underlying metacommunity processes in this system. We found a strong separation of zooplankton communities from kettle holes of different hydroperiods (degree of permanency) throughout the season, while the community composition within single kettle holes did not differ between years. Species richness was primarily dependent on pH and permanency, while species diversity (Shannon Index) was influenced by kettle hole location. Community composition was impacted by kettle hole size and surrounding field crops. Environmental processes dominated temporal and spatial processes. Sediment communities showed a different composition compared to water samples but did not differ between ephemeral and permanent kettle holes. Our results suggest that communities are mainly structured by environmental filtering based on pH, kettle hole size, surrounding field crops, and permanency. Environmental filtering based on specific conditions in individual kettle holes seems to be the dominant process in community assembly in the studied zooplankton metacommunity.
Collapse
Affiliation(s)
- Katrin Kiemel
- Unit of Evolutionary Biology/Systematic Zoology, Institute for Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Guntram Weithoff
- Unit of Ecology and Ecosystem Modelling, Institute for Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Ralph Tiedemann
- Unit of Evolutionary Biology/Systematic Zoology, Institute for Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| |
Collapse
|
18
|
Muller A, Dubois SF, Boyé A, Becheler R, Droual G, Chevalier M, Pasquier M, Roudaut L, Fournier‐Sowinski J, Auby I, Nunes FLD. Environmental filtering and biotic interactions act on different facets of the diversity of benthic assemblages associated with eelgrass. Ecol Evol 2023; 13:e10159. [PMID: 38034328 PMCID: PMC10682608 DOI: 10.1002/ece3.10159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 05/15/2023] [Accepted: 05/19/2023] [Indexed: 12/02/2023] Open
Abstract
Eelgrass supports diverse benthic communities that ensure a variety of ecosystem functions. To better understand the ecological processes that shape community composition in eelgrass at local and regional scales, taxonomic and functional α- and β-diversity were quantified for communities inhabiting five meadows in France. The extent to which environmental factors affected local and regional benthic communities was quantified by considering their direct and indirect effects (through morphological traits of eelgrass) using piecewise structural equation modeling (pSEM). Communities supported by eelgrass had higher species abundances, as well as taxonomic and functional diversity compared to nearby bare sediments. No significant differences were found between communities from the center relative to the edges of meadows, indicating that both habitats provide similar benefits to biodiversity. The presence of a few abundant species and traits suggests moderate levels of habitat filtering and close associations of certain species with eelgrass. Nevertheless, high turnover of a large number of rare species and traits was observed among meadows, resulting in meadows being characterized by their own distinct communities. High turnover indicates that much of the community is not specific to eelgrass, but rather reflects local species pools. pSEM showed that spatial variation in community composition (β-diversity) was primarily affected by environmental conditions, with temperature, current velocity, and tidal amplitude being the most significant explanatory variables. Local richness and abundance (α-diversity) were affected by both environment and morphological traits. Importantly, morphological traits of Zostera marina were also influenced by environmental conditions, revealing cascading effects of the environment on assemblages. In sum, the environment exerted large effects on community structure at both regional and local scales, while plant traits were only pertinent in explaining local diversity. This complex interplay of processes acting at multiple scales with indirect effects should be accounted for in conservation efforts that target the protection of biodiversity.
Collapse
Affiliation(s)
- Alexandre Muller
- IFREMER Centre de Bretagne, DYNECOLaboratoire d'Ecologie Benthique CôtièrePlouzanéFrance
| | - Stanislas F. Dubois
- IFREMER Centre de Bretagne, DYNECOLaboratoire d'Ecologie Benthique CôtièrePlouzanéFrance
| | - Aurélien Boyé
- IFREMER Centre de Bretagne, DYNECOLaboratoire d'Ecologie Benthique CôtièrePlouzanéFrance
| | - Ronan Becheler
- IFREMER Centre de Bretagne, DYNECOLaboratoire d'Ecologie Benthique CôtièrePlouzanéFrance
| | - Gabin Droual
- IFREMER Centre de Bretagne, DYNECOLaboratoire d'Ecologie Benthique CôtièrePlouzanéFrance
- DECOD (Ecosystem Dynamics and Sustainability), IFREMER, INRAEInstitut Agrocampus OuestNantesFrance
| | - Mathieu Chevalier
- IFREMER Centre de Bretagne, DYNECOLaboratoire d'Ecologie Benthique CôtièrePlouzanéFrance
| | - Marine Pasquier
- IFREMER Centre de Bretagne, DYNECOLaboratoire d'Ecologie Benthique CôtièrePlouzanéFrance
| | - Loïg Roudaut
- IFREMER Centre de Bretagne, DYNECOLaboratoire d'Ecologie Benthique CôtièrePlouzanéFrance
| | - Jérôme Fournier‐Sowinski
- CNRS, Centre d'Écologie et des Sciences de la Conservation (CESCO)Station de Biologie Marine MNHNConcarneauFrance
| | - Isabelle Auby
- IFREMER, Laboratoire Environnement Ressources d'ArcachonArcachonFrance
| | - Flávia L. D. Nunes
- IFREMER Centre de Bretagne, DYNECOLaboratoire d'Ecologie Benthique CôtièrePlouzanéFrance
| |
Collapse
|
19
|
Tang B, Roberts SM, Clark JS, Gelfand AE. Mechanistic modeling of climate effects on redistribution and population growth in a community of fish species. GLOBAL CHANGE BIOLOGY 2023; 29:6399-6414. [PMID: 37789712 DOI: 10.1111/gcb.16963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 09/01/2023] [Accepted: 09/19/2023] [Indexed: 10/05/2023]
Abstract
Understanding community responses to climate is critical for anticipating the future impacts of global change. However, despite increased research efforts in this field, models that explicitly include important biological mechanisms are lacking. Quantifying the potential impacts of climate change on species is complicated by the fact that the effects of climate variation may manifest at several points in the biological process. To this end, we extend a dynamic mechanistic model that combines population dynamics, such as species interactions, with species redistribution by allowing climate to affect both processes. We examine their relative contributions in an application to the changing biomass of a community of eight species in the Gulf of Maine using over 30 years of fisheries data from the Northeast Fishery Science Center. Our model suggests that the mechanisms driving biomass trends vary across space, time, and species. Phase space plots demonstrate that failing to account for the dynamic nature of the environmental and biologic system can yield theoretical estimates of population abundances that are not observed in empirical data. The stock assessments used by fisheries managers to set fishing targets and allocate quotas often ignore environmental effects. At the same time, research examining the effects of climate change on fish has largely focused on redistribution. Frameworks that combine multiple biological reactions to climate change are particularly necessary for marine researchers. This work is just one approach to modeling the complexity of natural systems and highlights the need to incorporate multiple and possibly interacting biological processes in future models.
Collapse
Affiliation(s)
- Becky Tang
- Department of Mathematics and Statistics, Middlebury College, Middlebury, Vermont, USA
- Department of Statistical Science, Duke University, Durham, North Carolina, USA
| | - Sarah M Roberts
- Department of Earth, Marine, and Environmental Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - James S Clark
- Nicholas School of the Environment, Duke University, Durham, North Carolina, USA
| | - Alan E Gelfand
- Department of Statistical Science, Duke University, Durham, North Carolina, USA
| |
Collapse
|
20
|
Sankone C, Bedwell C, McCreadie J. Regional β-Diversity of Stream Insects in Coastal Alabama Is Correlated with Stream Conditions, Not Distance among Sites. INSECTS 2023; 14:847. [PMID: 37999046 PMCID: PMC10671468 DOI: 10.3390/insects14110847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/22/2023] [Accepted: 10/25/2023] [Indexed: 11/25/2023]
Abstract
β-diversity is often measured over both spatial and temporal gradients of elevation, latitude, and environmental conditions. It is of particular interest to ecologists, as it provides opportunities to test and infer potential causal mechanisms determining local species assemblages. However, studies of invertebrate β-diversity, especially aquatic insects, have lagged far behind other biota. Using partial Mantel tests, we explored the associations between β-diversity of insects found in the coastal streams of Alabama, USA, and stream conditions and distances among sites. β-diversity was expressed using the Sørensen index, βSor, stream conditions were expressed as principal components (PCs), and distances as Euclidean distances (km) among sites. We also investigated the impact of seasonality (fall, summer) and taxonomic resolution (genus, species) on βSor. Regardless of season, βSor was significantly correlated (p < 0.01; r > 0.44) with stream conditions (stream size and water chemistry), while taxonomic resolution had minimal effect on associations between βSor and stream conditions. Distance was never correlated with changes in βSor (p > 0.05). We extended the use of the Sørensen pair-wise index to a multiple-site dissimilarity, βMult, which was partitioned into patterns of spatial turnover (βTurn) and nestedness (βNest). Changes in βMult were driven mostly by turnover rather than nestedness.
Collapse
Affiliation(s)
- Carlos Sankone
- Biology Department, University of South Alabama, Mobile, AL 36688, USA;
| | - Chris Bedwell
- Bedwell Biological LLC., 2617 Grey Stone Rd, Henderson, NV 89074, USA;
| | - John McCreadie
- Biology Department, University of South Alabama, Mobile, AL 36688, USA;
| |
Collapse
|
21
|
Krichel L, Kirk D, Pencer C, Hönig M, Wadhawan K, Krkošek M. Short-term temperature fluctuations increase disease in a Daphnia-parasite infectious disease system. PLoS Biol 2023; 21:e3002260. [PMID: 37683040 PMCID: PMC10491407 DOI: 10.1371/journal.pbio.3002260] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 07/18/2023] [Indexed: 09/10/2023] Open
Abstract
Climate change has profound effects on infectious disease dynamics, yet the impacts of increased short-term temperature fluctuations on disease spread remain poorly understood. We empirically tested the theoretical prediction that short-term thermal fluctuations suppress endemic infection prevalence at the pathogen's thermal optimum. This prediction follows from a mechanistic disease transmission model analyzed using stochastic simulations of the model parameterized with thermal performance curves (TPCs) from metabolic scaling theory and using nonlinear averaging, which predicts ecological outcomes consistent with Jensen's inequality (i.e., reduced performance around concave-down portions of a thermal response curve). Experimental observations of replicated epidemics of the microparasite Ordospora colligata in Daphnia magna populations indicate that temperature variability had the opposite effect of our theoretical predictions and instead increase endemic infection prevalence. This positive effect of temperature variability is qualitatively consistent with a published hypothesis that parasites may acclimate more rapidly to fluctuating temperatures than their hosts; however, incorporating hypothetical effects of delayed host acclimation into the mechanistic transmission model did not fully account for the observed pattern. The experimental data indicate that shifts in the distribution of infection burden underlie the positive effect of temperature fluctuations on endemic prevalence. The increase in disease risk associated with climate fluctuations may therefore result from disease processes interacting across scales, particularly within-host dynamics, that are not captured by combining standard transmission models with metabolic scaling theory.
Collapse
Affiliation(s)
- Leila Krichel
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Canada
| | - Devin Kirk
- Department of Biology, Stanford University, Stanford, California, United States of America
| | - Clara Pencer
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Canada
| | - Madison Hönig
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Canada
- Department of Anthropology, Washington State University, Pullman, Washington, United States of America
| | - Kiran Wadhawan
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Canada
- School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Martin Krkošek
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Canada
| |
Collapse
|
22
|
Rolls RJ, Deane DC, Johnson SE, Heino J, Anderson MJ, Ellingsen KE. Biotic homogenisation and differentiation as directional change in beta diversity: synthesising driver-response relationships to develop conceptual models across ecosystems. Biol Rev Camb Philos Soc 2023; 98:1388-1423. [PMID: 37072381 DOI: 10.1111/brv.12958] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/23/2023] [Accepted: 03/28/2023] [Indexed: 04/20/2023]
Abstract
Biotic homogenisation is defined as decreasing dissimilarity among ecological assemblages sampled within a given spatial area over time. Biotic differentiation, in turn, is defined as increasing dissimilarity over time. Overall, changes in the spatial dissimilarities among assemblages (termed 'beta diversity') is an increasingly recognised feature of broader biodiversity change in the Anthropocene. Empirical evidence of biotic homogenisation and biotic differentiation remains scattered across different ecosystems. Most meta-analyses quantify the prevalence and direction of change in beta diversity, rather than attempting to identify underlying ecological drivers of such changes. By conceptualising the mechanisms that contribute to decreasing or increasing dissimilarity in the composition of ecological assemblages across space, environmental managers and conservation practitioners can make informed decisions about what interventions may be required to sustain biodiversity and can predict potential biodiversity outcomes of future disturbances. We systematically reviewed and synthesised published empirical evidence for ecological drivers of biotic homogenisation and differentiation across terrestrial, marine, and freshwater realms to derive conceptual models that explain changes in spatial beta diversity. We pursued five key themes in our review: (i) temporal environmental change; (ii) disturbance regime; (iii) connectivity alteration and species redistribution; (iv) habitat change; and (v) biotic and trophic interactions. Our first conceptual model highlights how biotic homogenisation and differentiation can occur as a function of changes in local (alpha) diversity or regional (gamma) diversity, independently of species invasions and losses due to changes in species occurrence among assemblages. Second, the direction and magnitude of change in beta diversity depends on the interaction between spatial variation (patchiness) and temporal variation (synchronicity) of disturbance events. Third, in the context of connectivity and species redistribution, divergent beta diversity outcomes occur as different species have different dispersal characteristics, and the magnitude of beta diversity change associated with species invasions also depends strongly on alpha and gamma diversity prior to species invasion. Fourth, beta diversity is positively linked with spatial environmental variability, such that biotic homogenisation and differentiation occur when environmental heterogeneity decreases or increases, respectively. Fifth, species interactions can influence beta diversity via habitat modification, disease, consumption (trophic dynamics), competition, and by altering ecosystem productivity. Our synthesis highlights the multitude of mechanisms that cause assemblages to be more or less spatially similar in composition (taxonomically, functionally, phylogenetically) through time. We consider that future studies should aim to enhance our collective understanding of ecological systems by clarifying the underlying mechanisms driving homogenisation or differentiation, rather than focusing only on reporting the prevalence and direction of change in beta diversity, per se.
Collapse
Affiliation(s)
- Robert J Rolls
- School of Environmental and Rural Sciences, University of New England, Armidale, New South Wales, 2351, Australia
| | - David C Deane
- School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, Victoria, 3086, Australia
| | - Sarah E Johnson
- Natural Resources Department, Northland College, Ashland, WI, 54891, USA
| | - Jani Heino
- Geography Research Unit, University of Oulu, P.O. Box 8000, Oulu, FI-90014, Finland
| | - Marti J Anderson
- New Zealand Institute for Advanced Study (NZIAS), Massey University, Albany Campus, Auckland, New Zealand
| | - Kari E Ellingsen
- Norwegian Institute for Nature Research (NINA), Fram Centre, P.O. Box 6606 Langnes, Tromsø, 9296, Norway
| |
Collapse
|
23
|
Zou HX, Rudolf VHW. Priority Effects Determine How Dispersal Affects Biodiversity in Seasonal Metacommunities. Am Nat 2023; 202:140-151. [PMID: 37531275 DOI: 10.1086/725039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
AbstractThe arrival order of species frequently determines the outcome of their interactions. This phenomenon, called the priority effect, is ubiquitous in nature and determines local community structure, but we know surprisingly little about how it influences biodiversity across different spatial scales. Here, we use a seasonal metacommunity model to show that biodiversity patterns and the homogenizing effect of high dispersal depend on the specific mechanisms underlying priority effects. When priority effects are driven only by positive frequency dependence, dispersal-diversity relationships are sensitive to initial conditions but generally show a hump-shaped relationship: biodiversity declines when dispersal rates become high and allow the dominant competitor to exclude other species across patches. When spatiotemporal variation in phenological differences alters species' interaction strengths (trait-dependent priority effects), local, regional, and temporal diversity are surprisingly insensitive to variation in dispersal, regardless of the initial numeric advantage. Thus, trait-dependent priority effects can strongly reduce the effect of dispersal on biodiversity, preventing the homogenization of metacommunities. Our results suggest an alternative mechanism that maintains local and regional diversity without environmental heterogeneity, highlighting that accounting for the mechanisms underlying priority effects is fundamental to understanding patterns of biodiversity.
Collapse
|
24
|
Li HD, Holyoak M, Xiao Z. Disentangling spatiotemporal dynamics in metacommunities through a species-patch network approach. Ecol Lett 2023; 26:1261-1276. [PMID: 37493107 DOI: 10.1111/ele.14243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/21/2023] [Accepted: 04/23/2023] [Indexed: 07/27/2023]
Abstract
Colonization and extinction at local and regional scales, and gains and losses of patches are important processes in the spatiotemporal dynamics of metacommunities. However, analytical challenges remain in quantifying such spatiotemporal dynamics when species extinction-colonization and patch gain and loss processes act simultaneously. Recent advances in network analysis show great potential in disentangling the roles of colonization, extinction, and patch dynamics in metacommunities. Here, we developed a species-patch network approach to quantify metacommunity dynamics including (i) temporal changes in network structure, and (ii) temporal beta diversity of species-patch links and its components that reflect species extinction-colonization and patch gain and loss. Application of the methods to simulated datasets demonstrated that the approach was informative about metacommunity assembly processes. Based on three empirical datasets, our species-patch network approach provided additional information about metacommunity dynamics through distinguishing the effects of species colonization and extinction at different scales from patch gains and losses and how specific environmental factors related to species-patch network structure. In conclusion, our species-patch network framework provides effective methods for monitoring and revealing long-term metacommunity dynamics by quantifying gains and losses of both species and patches under local and global environmental change.
Collapse
Affiliation(s)
- Hai-Dong Li
- State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Marcel Holyoak
- Department of Environmental Science and Policy, University of California, Davis, California, USA
| | - Zhishu Xiao
- State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
25
|
Ndinga-Muniania C, Wornson N, Fulcher MR, Borer ET, Seabloom EW, Kinkel L, May G. Cryptic functional diversity within a grass mycobiome. PLoS One 2023; 18:e0287990. [PMID: 37471328 PMCID: PMC10358963 DOI: 10.1371/journal.pone.0287990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 06/17/2023] [Indexed: 07/22/2023] Open
Abstract
Eukaryotic hosts harbor tremendously diverse microbiomes that affect host fitness and response to environmental challenges. Fungal endophytes are prominent members of plant microbiomes, but we lack information on the diversity in functional traits affecting their interactions with their host and environment. We used two culturing approaches to isolate fungal endophytes associated with the widespread, dominant prairie grass Andropogon gerardii and characterized their taxonomic diversity using rDNA barcode sequencing. A randomly chosen subset of fungi representing the diversity of each leaf was then evaluated for their use of different carbon compound resources and growth on those resources. Applying community phylogenetic analyses, we discovered that these fungal endophyte communities are comprised of phylogenetically distinct assemblages of slow- and fast-growing fungi that differ in their use and growth on differing carbon substrates. Our results demonstrate previously undescribed and cryptic functional diversity in carbon resource use and growth in fungal endophyte communities of A. gerardii.
Collapse
Affiliation(s)
- Cedric Ndinga-Muniania
- Plant and Microbial Biology Graduate Program, University of Minnesota, St. Paul, Minnesota, United States of America
- Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, Minnesota, United States of America
| | - Nicholas Wornson
- School of Statistics, University of Minnesota, Minneapolis, Minnesota, United States of America
- Department of Plant Pathology, University of Minnesota, Saint Paul, Minnesota, United States of America
| | - Michael R Fulcher
- Foreign Disease-Weed Science Research Unit, United States Department of Agriculture, Frederick, Maryland, United States of America
| | - Elizabeth T Borer
- Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, Minnesota, United States of America
| | - Eric W Seabloom
- Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, Minnesota, United States of America
| | - Linda Kinkel
- Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, Minnesota, United States of America
- Department of Plant Pathology, University of Minnesota, Saint Paul, Minnesota, United States of America
| | - Georgiana May
- Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, Minnesota, United States of America
| |
Collapse
|
26
|
Wang Y, Liu P, Solomatine D, Li L, Wu C, Han D, Zhang X, Yang Z, Yang S. Integrating the flow regime and water quality effects into a niche-based metacommunity dynamics model for river ecosystems. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 336:117562. [PMID: 36913858 DOI: 10.1016/j.jenvman.2023.117562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 12/05/2022] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Aquatic community dynamics are closely dominated by flow regime and water quality conditions, which are increasingly threatened by dam regulation, water diversion, and nutrition pollution. However, further understanding of the ecological impacts of flow regime and water quality conditions on aquatic multi-population dynamics has rarely been integrated into existing ecological models. To address this issue, a new niche-based metacommunity dynamics model (MDM) is proposed. The MDM aims to simulate the coevolution processes of multiple populations under changing abiotic environments, pioneeringly applied to the mid-lower Han River, China. The quantile regression method was used for the first time to derive ecological niches and competition coefficients of the MDM, which are demonstrated to be reasonable by comparing them with the empirical evidence. Simulation results show that the Nash efficiency coefficients for fish, zooplankton, zoobenthos, and macrophytes are more than 0.64, while the Pearson correlation coefficients for them are no less than 0.71. Overall, the MDM performs effectively in simulating metacommunity dynamics. For all river stations, the average contributions of biological interaction, flow regime effects, and water quality effects to multi-population dynamics are 64%, 21%, and 15%, respectively, suggesting that the population dynamics are dominated by biological interaction. For upstream stations, the fish population is 8%-22% more responsive to flow regime alteration than other populations, while other populations are 9%-26% more responsive to changes in water quality conditions than fish. For downstream stations, flow regime effects on each population account for less than 1% due to more stable hydrological conditions. The innovative contribution of this study lies in proposing a multi-population model to quantify the effects of flow regime and water quality on aquatic community dynamics by incorporating multiple indicators of water quantity, water quality, and biomass. This work has potential for the ecological restoration of rivers at the ecosystem level. This study also highlights the importance of considering threshold and tipping point issues when analyzing the "water quantity-water quality-aquatic ecology" nexus in future works.
Collapse
Affiliation(s)
- Yibo Wang
- State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, PR China; Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, PR China; Research Institute for Water Security (RIWS), Wuhan University, Wuhan, 430072, PR China
| | - Pan Liu
- State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, PR China; Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, PR China; Research Institute for Water Security (RIWS), Wuhan University, Wuhan, 430072, PR China.
| | - Dimitri Solomatine
- Department of Hydroinformatics and Socio-Technical Innovation, IHE Delft Institute for Water Education, Delft, 2611, the Netherlands; Department of Water Management, Delft University of Technology, Delft, 2600, the Netherlands.
| | - Liping Li
- Bureau of Hydrology, Changjiang Water Resources Commission, Wuhan, 430010, PR China
| | - Chen Wu
- State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, PR China; Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, PR China; Research Institute for Water Security (RIWS), Wuhan University, Wuhan, 430072, PR China
| | - Dongyang Han
- State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, PR China; Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, PR China; Research Institute for Water Security (RIWS), Wuhan University, Wuhan, 430072, PR China
| | - Xiaojing Zhang
- State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, PR China; Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, PR China; Research Institute for Water Security (RIWS), Wuhan University, Wuhan, 430072, PR China
| | - Zhikai Yang
- State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, PR China; Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, PR China; Research Institute for Water Security (RIWS), Wuhan University, Wuhan, 430072, PR China
| | - Sheng Yang
- China Energy Science and Technology Research Institute Co.,Ltd, Nanjing, 210023, PR China
| |
Collapse
|
27
|
Cruz AR, Davidowitz G, Moore CM, Bronstein JL. Mutualisms in a warming world. Ecol Lett 2023. [PMID: 37303268 DOI: 10.1111/ele.14264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 05/16/2023] [Accepted: 05/21/2023] [Indexed: 06/13/2023]
Abstract
Predicting the impacts of global warming on mutualisms poses a significant challenge given the functional and life history differences that usually exist among interacting species. However, this is a critical endeavour since virtually all species on Earth depend on other species for survival and/or reproduction. The field of thermal ecology can provide physiological and mechanistic insights, as well as quantitative tools, for addressing this challenge. Here, we develop a conceptual and quantitative framework that connects thermal physiology to species' traits, species' traits to interacting mutualists' traits and interacting traits to the mutualism. We first identify the functioning of reciprocal mutualism-relevant traits in diverse systems as the key temperature-dependent mechanisms driving the interaction. We then develop metrics that measure the thermal performance of interacting mutualists' traits and that approximate the thermal performance of the mutualism itself. This integrated approach allows us to additionally examine how warming might interact with resource/nutrient availability and affect mutualistic species' associations across space and time. We offer this framework as a synthesis of convergent and critical issues in mutualism science in a changing world, and as a baseline to which other ecological complexities and scales might be added.
Collapse
Affiliation(s)
- Austin R Cruz
- Department of Ecology & Evolutionary Biology, The University of Arizona, Tucson, Arizona, USA
| | - Goggy Davidowitz
- Department of Ecology & Evolutionary Biology, The University of Arizona, Tucson, Arizona, USA
- Department of Entomology, The University of Arizona, Tucson, Arizona, USA
| | | | - Judith L Bronstein
- Department of Ecology & Evolutionary Biology, The University of Arizona, Tucson, Arizona, USA
- Department of Entomology, The University of Arizona, Tucson, Arizona, USA
| |
Collapse
|
28
|
Gu X, Chen G, Lin Y, Wang W, Wang M. Drivers of the spatiotemporal patterns of the mangrove crab metacommunity in a tropical bay. Ecol Evol 2023; 13:e10191. [PMID: 37325721 PMCID: PMC10266579 DOI: 10.1002/ece3.10191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/23/2023] [Accepted: 05/30/2023] [Indexed: 06/17/2023] Open
Abstract
Revealing community patterns and driving forces is essential in community ecology and a prerequisite for effective management and conservation efforts. However, the mangrove ecosystem and its important fauna group such as the crabs, still lack multi-processes research under metacommunity framework, resulting in evidence and theorical application gaps. To fill these gaps, we selected China's most representative mangrove bay reserve in tropical zone as a stable experimental system and conducted a seasonal investigation (July 2020, October 2020, January 2021, and April 2021) of mangrove crabs. We performed a multi-approach analysis using both pattern-based and mechanistic method to distinguish the processes driving the mangrove crab metacommunity. Our results showed that the crab metacommunity exhibits a Clementsian pattern in the bay-wide mangrove ecosystem but is influenced by both local environmental heterogeneity and spatial processes, thus representing a combined paradigm of species sorting and mass effect. Moreover, the long-distance spatial constraints are more pronounced compared to the local environmental factors. This is reflected in the greater importance of the broad-scale Moran's Eigenvector Maps, the distance-decay pattern of similarity, and the difference in beta diversity dominated by the turnover component. This pattern changes throughout the year, mainly due to changes in dominant functional groups caused by the stress of changes in water salinity and temperature induced by air temperature and precipitation. This research provides multi-dimension research data and relevant analysis, offering clear evidence for understanding the patterns and related driving forces of crab metacommunity in tropical bay mangroves, and verifies the applicability of some general laws in the system. Future studies can address more diverse spatiotemporal scales, gaining a clearer understanding to serve the conservation of mangrove ecosystems and economically important fishery species.
Collapse
Affiliation(s)
- Xuan Gu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment & EcologyXiamen UniversityXiamenChina
- Zhangjiang Estuary Mangrove Wetland Ecosystem Station, National Observation and Research Station for the Taiwan Strait Marine EcosystemXiamen UniversityZhangzhouChina
- Engineering Research Center of Fujian Province for Coastal Wetland Protection and Ecological Recovery, College of the Environment & EcologyXiamen UniversityXiamenChina
| | - Guogui Chen
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment & EcologyXiamen UniversityXiamenChina
- State Key Laboratory of Water Environmental Simulation, School of EnvironmentBeijing Normal UniversityBeijingChina
- Research and Development Center for Watershed Environmental Eco‐Engineering, Advanced Institute of Natural SciencesBeijing Normal UniversityZhuhaiChina
| | - Yufeng Lin
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment & EcologyXiamen UniversityXiamenChina
- Zhangjiang Estuary Mangrove Wetland Ecosystem Station, National Observation and Research Station for the Taiwan Strait Marine EcosystemXiamen UniversityZhangzhouChina
- Engineering Research Center of Fujian Province for Coastal Wetland Protection and Ecological Recovery, College of the Environment & EcologyXiamen UniversityXiamenChina
| | - Wenqing Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment & EcologyXiamen UniversityXiamenChina
- Zhangjiang Estuary Mangrove Wetland Ecosystem Station, National Observation and Research Station for the Taiwan Strait Marine EcosystemXiamen UniversityZhangzhouChina
- Engineering Research Center of Fujian Province for Coastal Wetland Protection and Ecological Recovery, College of the Environment & EcologyXiamen UniversityXiamenChina
| | - Mao Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment & EcologyXiamen UniversityXiamenChina
- Zhangjiang Estuary Mangrove Wetland Ecosystem Station, National Observation and Research Station for the Taiwan Strait Marine EcosystemXiamen UniversityZhangzhouChina
- Engineering Research Center of Fujian Province for Coastal Wetland Protection and Ecological Recovery, College of the Environment & EcologyXiamen UniversityXiamenChina
| |
Collapse
|
29
|
Wilkes MA, Carrivick JL, Castella E, Ilg C, Cauvy-Fraunié S, Fell SC, Füreder L, Huss M, James W, Lencioni V, Robinson C, Brown LE. Glacier retreat reorganizes river habitats leaving refugia for Alpine invertebrate biodiversity poorly protected. Nat Ecol Evol 2023:10.1038/s41559-023-02061-5. [PMID: 37142743 DOI: 10.1038/s41559-023-02061-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 03/31/2023] [Indexed: 05/06/2023]
Abstract
Alpine river biodiversity around the world is under threat from glacier retreat driven by rapid warming, yet our ability to predict the future distributions of specialist cold-water species is currently limited. Here we link future glacier projections, hydrological routing methods and species distribution models to quantify the changing influence of glaciers on population distributions of 15 alpine river invertebrate species across the entire European Alps, from 2020 to 2100. Glacial influence on rivers is projected to decrease steadily, with river networks expanding into higher elevations at a rate of 1% per decade. Species are projected to undergo upstream distribution shifts where glaciers persist but become functionally extinct where glaciers disappear completely. Several alpine catchments are predicted to offer climate refugia for cold-water specialists. However, present-day protected area networks provide relatively poor coverage of these future refugia, suggesting that alpine conservation strategies must change to accommodate the future effects of global warming.
Collapse
Affiliation(s)
- M A Wilkes
- School of Life Sciences, University of Essex, Colchester, UK
| | - J L Carrivick
- School of Geography and water@leeds, University of Leeds, Leeds, UK
| | - E Castella
- Section of Earth and Environmental Sciences and Institute for Environmental Sciences, University of Geneva, Geneva, Switzerland
| | - C Ilg
- VSA, Swiss Water Association, Glattbrugg, Switzerland
| | - S Cauvy-Fraunié
- INRAE, UR RIVERLY, Centre de Lyon-Villeurbanne, Villeurbanne, France
| | - S C Fell
- School of Geography and water@leeds, University of Leeds, Leeds, UK
| | - L Füreder
- Institute of Ecology, University of Innsbruck, Innsbruck, Austria
| | - M Huss
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
| | - W James
- School of Geography and water@leeds, University of Leeds, Leeds, UK
| | - V Lencioni
- Climate and Ecology Unit, Research and Museum Collections Office, MUSE- Science Museum of Trento, Trento, Italy
| | - C Robinson
- Department of Aquatic Ecology, Eawag, Duebendorf, CH and Institute of Integrative Biology, ETH Zurich, Zurich, Switzerland
| | - L E Brown
- School of Geography and water@leeds, University of Leeds, Leeds, UK.
| |
Collapse
|
30
|
Oborny B. Lost in translation? - Caveat to the application of the voter model in ecology and evolutionary biology. Sci Prog 2023; 106:368504231175324. [PMID: 37211750 PMCID: PMC10358462 DOI: 10.1177/00368504231175324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The voter model is a paradigmatic model of competition between alternative states within groups. Its properties have been intensively studied in statistical physics. Due to its generality, the model lends itself to various applications in ecology and evolutionary biology. I briefly review these opportunities, but call attention to a frequently occurring misinterpretation: it is often assumed that the agents in the model represent individual organisms. I argue that this assumption only holds under very specific conditions, and thus the meaning of the agents is often 'lost in translation' between physics and biology. Instead of an individual-based view, I propose that an alternative, site-based approach is more plausible. I suggest that the biological applicability of the model could further be broadened by considering the transitional states of the agents (sites) explicitly and letting the network evolve according to the agents' states.
Collapse
Affiliation(s)
- Beáta Oborny
- Biological Institute, Eötvös Loránd University, Budapest, Hungary
- CER Institute of Evolution, Eötvös Loránd Research Network, Budapest, Hungary
| |
Collapse
|
31
|
Borthagaray AI, Cunillera-Montcusí D, Bou J, Tornero I, Boix D, Anton-Pardo M, Ortiz E, Mehner T, Quintana XD, Gascón S, Arim M. Heterogeneity in the isolation of patches may be essential for the action of metacommunity mechanisms. Front Ecol Evol 2023. [DOI: 10.3389/fevo.2023.1125607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
The spatial isolation gradient of communities and the gradient in the species dispersal ability are recognized as determinants of biodiversity in metacommunities. In spite of this, mean field models, spatially explicit models, and experiments were mainly focused on idealized spatial arrangements of communities leaving aside the combining role of dispersal and isolation gradients in metacommunity processes. Consequently, we have an incipient understanding of the role of the real spatial arrangement of communities on biodiversity patterns. We focus on six metacommunities for which confident information about the spatial arrangement of water bodies is available. Using coalescent metacommunity models and null models that randomize the location of water bodies, we estimated the potential effect of the landscape on biodiversity and its dependence on species dispersal ability. At extremely low or high dispersal abilities, the location of ponds does not influence diversity because different communities are equally affected by the low or high incoming dispersal. At intermediate dispersal abilities, peripheral communities present a much lower richness and higher beta diversity than central communities. Moreover, metacommunities from real landscapes host more biodiversity than randomized landscapes, a result that is determined by the heterogeneity in the geographic isolation of communities. In a dispersal gradient, mass effects systematically increase the local richness and decrease beta diversity. However, the spatial arrangement of patches only has a large importance in metacommunity processes at intermediate dispersal abilities, which ensures access to central locations but limits dispersal in isolated communities. The ongoing reduction in spatial extent and simplification of the landscape may consequently undermine the metacommunity processes that support biodiversity, something that should be explicitly considered in preserving and restoring strategies.
Collapse
|
32
|
Issaka DS, Gross O, Ayilara I, Schabes T, DeMalach N. Density‐dependent and independent mechanisms jointly reduce species performance under nitrogen enrichment. OIKOS 2023. [DOI: 10.1111/oik.09838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- David Sampson Issaka
- Inst. of Plant Sciences and Genetics in Agriculture, The Hebrew Univ. of Jerusalem Rehovot Israel
| | - Or Gross
- Inst. of Plant Sciences and Genetics in Agriculture, The Hebrew Univ. of Jerusalem Rehovot Israel
| | - Itunuoluwa Ayilara
- Inst. of Plant Sciences and Genetics in Agriculture, The Hebrew Univ. of Jerusalem Rehovot Israel
| | - Tal Schabes
- Inst. of Plant Sciences and Genetics in Agriculture, The Hebrew Univ. of Jerusalem Rehovot Israel
| | - Niv DeMalach
- Inst. of Plant Sciences and Genetics in Agriculture, The Hebrew Univ. of Jerusalem Rehovot Israel
| |
Collapse
|
33
|
Piano E, Bonte D, De Meester L, Hendrickx F. Dispersal capacity underlies scale-dependent changes in species richness patterns under human disturbance. Ecology 2023; 104:e3946. [PMID: 36479697 DOI: 10.1002/ecy.3946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 07/12/2022] [Accepted: 10/25/2022] [Indexed: 12/12/2022]
Abstract
Changes in the species richness of (meta-)communities emerge from changes in the relative species abundance distribution (SAD), the total density of individuals, and the amount of spatial aggregation of individuals from the same species. Yet, how human disturbance affects these underlying diversity components at different spatial scales and how this interacts with important species traits, like dispersal capacity, remain poorly understood. Using data of carabid beetle communities along a highly replicated urbanization gradient, we reveal that species richness in urban sites was reduced due to a decline in individual density as well as changes in the SAD at both small and large spatial scales. Changes in these components of species richness were linked to differential responses of groups of species that differ in dispersal capacity. The individual density effect on species richness was due to a drastic 90% reduction of low-dispersal individuals in more urban sites. Conversely, the decrease in species richness due to changes in the SAD at large (i.e., loss of species from the regional pool) and small (i.e., decreased evenness) spatial scales were driven by species with intermediate and high dispersal ability, respectively. These patterns coincide with the expected responses of these dispersal-type assemblages toward human disturbance, namely, (i) loss of low-dispersal species by local extinction processes, (ii) loss of higher-dispersal species from the regional species pool due to decreased habitat diversity, and (iii) dominance of a few highly dispersive species resulting in a decreased evenness. Our results demonstrate that dispersal capacity plays an essential role in determining scale-dependent changes in species richness patterns. Incorporating this information improves our mechanistic insight into how environmental change affects species diversity at different spatial scales, allowing us to better forecast how human disturbance will drive local and regional changes in biodiversity patterns.
Collapse
Affiliation(s)
- Elena Piano
- Royal Belgian Institute of Natural Sciences, Brussels, Belgium.,Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Dries Bonte
- Biology Department, Ghent University, Ghent, Belgium
| | - Luc De Meester
- Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany.,Laboratory of Aquatic Ecology, Evolution and Conservation, Katholieke Universiteit Leuven, Leuven, Belgium.,Institute of Biology, Freie Universität Berlin, Berlin, Germany
| | - Frederik Hendrickx
- Royal Belgian Institute of Natural Sciences, Brussels, Belgium.,Biology Department, Ghent University, Ghent, Belgium
| |
Collapse
|
34
|
Deterministic Assembly Processes Strengthen the Effects of β-Diversity on Community Biomass of Marine Bacterioplankton. mSystems 2023; 8:e0097022. [PMID: 36511690 PMCID: PMC9948717 DOI: 10.1128/msystems.00970-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The presence of more species in the community of a sampling site (α diversity) typically increases ecosystem functions via nonrandom processes like resource partitioning. When considering multiple communities, we hypothesize that higher compositional difference (β diversity) increases overall functions of these communities. Further, we hypothesize that the β diversity effect is more positive when β diversity is increased by nonrandom assembly processes. To test these hypotheses, we collected bacterioplankton along a transect of 6 sampling sites in the southern East China Sea in 14 cruises. For any pairs of the 6 sites within a cruise, we calculated the Bray-Curtis index to represent β diversity and summed bacterial biomass as a proxy to indicate the overall function of the two communities. We then calculated deviation of observed mean pairwise phylogenetic similarities among species in two communities from random to represent the influences of nonrandom processes. The bacterial β diversity was found to positively affect the summed bacterial biomass; however, the effect varied among cruises. Cross-cruise comparison indicated that the β diversity effect increased with the nonrandom processes selecting for phylogenetically dissimilar species. This study extends biodiversity-ecosystem functioning research to the scale of multiple sites and enriches the framework by considering community assembly processes. IMPORTANCE The implications of our analyses are twofold. First, we emphasize the importance of studying β diversity. We expanded the current biodiversity-ecosystem functioning framework from single to multiple sampling sites and investigated the influences of species compositional differences among sites on the overall functioning of these sites. Since natural ecological communities never exist alone, our analyses allow us to more holistically perceive the role of biodiversity in natural ecosystems. Second, we took community assembly processes into account to attain a more mechanistic understanding of the impacts of biodiversity on ecosystem functioning.
Collapse
|
35
|
van der Plas F, Hennecke J, Chase JM, van Ruijven J, Barry KE. Universal beta-diversity-functioning relationships are neither observed nor expected. Trends Ecol Evol 2023; 38:532-544. [PMID: 36806396 DOI: 10.1016/j.tree.2023.01.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 12/22/2022] [Accepted: 01/19/2023] [Indexed: 02/19/2023]
Abstract
Widespread evidence shows that local species richness (α-diversity) loss hampers the biomass production and stability of ecosystems. β-Diversity, namely the variation of species compositions among different ecological communities, represents another important biodiversity component, but studies on how it drives ecosystem functioning show mixed results. We argue that to better understand the importance of β-diversity we need to consider it across contexts. We focus on three scenarios that cause gradients in β-diversity: changes in (i) abiotic heterogeneity, (ii) habitat isolation, and (iii) species pool richness. We show that across these scenarios we should not expect universally positive relationships between β-diversity, production, and ecosystem stability. Nevertheless, predictable relationships between β-diversity and ecosystem functioning do exist in specific contexts, and can reconcile seemingly contrasting empirical relationships.
Collapse
Affiliation(s)
- Fons van der Plas
- Plant Ecology and Nature Conservation Group, Wageningen University, PO Box 47, 6700, AA, Wageningen, The Netherlands.
| | - Justus Hennecke
- Systematic Botany and Functional Biodiversity, Leipzig University, Leipzig, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | - Jonathan M Chase
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany; Institute of Computer Science, Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Jasper van Ruijven
- Plant Ecology and Nature Conservation Group, Wageningen University, PO Box 47, 6700, AA, Wageningen, The Netherlands
| | - Kathryn E Barry
- Ecology and Biodiversity Group, Dept of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands
| |
Collapse
|
36
|
Brian JI, Aldridge DC. Factors at multiple scales drive parasite community structure. J Anim Ecol 2023; 92:377-390. [PMID: 36421047 PMCID: PMC10098736 DOI: 10.1111/1365-2656.13853] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 11/17/2022] [Indexed: 11/25/2022]
Abstract
Understanding how ecological communities are assembled remains a key goal of ecosystem ecology. Because communities are hierarchical, factors acting at multiple scales can contribute to patterns of community structure. Parasites provide a natural system to explore this idea, as they exist as discrete communities within host individuals, which are themselves part of a community and metacommunity. We aimed to understand the relative contribution of multi-scale drivers in parasite community assembly and assess how patterns at one level may mask those occurring at another. Specifically, we wanted to disentangle patterns caused by passive sampling from those determined by ecological drivers, and how these vary with scale. We applied a Markov Random Fields model and assessed measures of β-diversity and nestedness for 420 replicate parasite infracommunities (parasite assemblages in host individuals) across two freshwater mussel host species, three sites and two time periods, comparing our results to simulations from four different ecologically relevant null models. We showed that β-diversity between sites (explaining 25% of variation in parasite distribution) and host species (41%) is greater than expected, and β-diversity between individual hosts is smaller than expected, even after accounting for parasite prevalence and characteristics of host individuals. Furthermore, parasite communities were significantly less nested than expected once parasite prevalence and host characteristics were both accounted for, but more nested than expected otherwise, suggesting a degree of modularity at the within-host level that is masked if underlying host and parasite characteristics are not taken into account. The Markov Random Fields model provided evidence for possible competitive within-host parasite interactions, providing a mechanism for the observed infracommunity modularity. An integrative approach that examines factors at multiple scales is necessary to understand the composition of ecological communities. Furthermore, patterns at one level can alter the interpretation of ecologically important drivers at another if variation at higher scales is not accounted for.
Collapse
Affiliation(s)
- Joshua I Brian
- Aquatic Ecology Group, The David Attenborough Building, Department of Zoology, University of Cambridge, Cambridge, UK.,Department of Geography, Bush House NE, King's College London, London, UK
| | - David C Aldridge
- Aquatic Ecology Group, The David Attenborough Building, Department of Zoology, University of Cambridge, Cambridge, UK
| |
Collapse
|
37
|
McFadden IR, Sendek A, Brosse M, Bach PM, Baity-Jesi M, Bolliger J, Bollmann K, Brockerhoff EG, Donati G, Gebert F, Ghosh S, Ho HC, Khaliq I, Lever JJ, Logar I, Moor H, Odermatt D, Pellissier L, de Queiroz LJ, Rixen C, Schuwirth N, Shipley JR, Twining CW, Vitasse Y, Vorburger C, Wong MKL, Zimmermann NE, Seehausen O, Gossner MM, Matthews B, Graham CH, Altermatt F, Narwani A. Linking human impacts to community processes in terrestrial and freshwater ecosystems. Ecol Lett 2023; 26:203-218. [PMID: 36560926 PMCID: PMC10107666 DOI: 10.1111/ele.14153] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 11/14/2022] [Accepted: 11/14/2022] [Indexed: 12/24/2022]
Abstract
Human impacts such as habitat loss, climate change and biological invasions are radically altering biodiversity, with greater effects projected into the future. Evidence suggests human impacts may differ substantially between terrestrial and freshwater ecosystems, but the reasons for these differences are poorly understood. We propose an integrative approach to explain these differences by linking impacts to four fundamental processes that structure communities: dispersal, speciation, species-level selection and ecological drift. Our goal is to provide process-based insights into why human impacts, and responses to impacts, may differ across ecosystem types using a mechanistic, eco-evolutionary comparative framework. To enable these insights, we review and synthesise (i) how the four processes influence diversity and dynamics in terrestrial versus freshwater communities, specifically whether the relative importance of each process differs among ecosystems, and (ii) the pathways by which human impacts can produce divergent responses across ecosystems, due to differences in the strength of processes among ecosystems we identify. Finally, we highlight research gaps and next steps, and discuss how this approach can provide new insights for conservation. By focusing on the processes that shape diversity in communities, we aim to mechanistically link human impacts to ongoing and future changes in ecosystems.
Collapse
Affiliation(s)
- Ian R McFadden
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland.,Institute of Terrestrial Ecosystems, ETH Zürich, Zurich, Switzerland
| | - Agnieszka Sendek
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland.,Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland
| | - Morgane Brosse
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland
| | - Peter M Bach
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland
| | - Marco Baity-Jesi
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland
| | - Janine Bolliger
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
| | - Kurt Bollmann
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
| | - Eckehard G Brockerhoff
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland.,School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - Giulia Donati
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland
| | - Friederike Gebert
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
| | - Shyamolina Ghosh
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
| | - Hsi-Cheng Ho
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland
| | - Imran Khaliq
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland
| | - J Jelle Lever
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland.,Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland
| | - Ivana Logar
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland
| | - Helen Moor
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland.,Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland
| | - Daniel Odermatt
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland
| | - Loïc Pellissier
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland.,Institute of Terrestrial Ecosystems, ETH Zürich, Zurich, Switzerland
| | - Luiz Jardim de Queiroz
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Kastanienbaum, Switzerland.,Institute of Ecology & Evolution, University of Bern, Bern, Switzerland
| | - Christian Rixen
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Davos, Switzerland
| | - Nele Schuwirth
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland
| | - J Ryan Shipley
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Kastanienbaum, Switzerland
| | - Cornelia W Twining
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Kastanienbaum, Switzerland
| | - Yann Vitasse
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
| | - Christoph Vorburger
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland.,Institute of Integrative Biology, Department of Environmental Systems Science, ETH Zürich, Zurich, Switzerland
| | - Mark K L Wong
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland.,School of Biological Sciences, The University of Western Australia, Crawley, WA, Australia
| | - Niklaus E Zimmermann
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
| | - Ole Seehausen
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Kastanienbaum, Switzerland.,Institute of Ecology & Evolution, University of Bern, Bern, Switzerland
| | - Martin M Gossner
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland.,Institute of Terrestrial Ecosystems, ETH Zürich, Zurich, Switzerland
| | - Blake Matthews
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Kastanienbaum, Switzerland
| | - Catherine H Graham
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
| | - Florian Altermatt
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland.,Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland
| | - Anita Narwani
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland
| |
Collapse
|
38
|
Díaz MJ, Buschbaum C, Renaud PE, Valdivia N, Molis M. Limited predatory effects on infaunal macrobenthos community patterns in intertidal soft-bottom of Arctic coasts. Ecol Evol 2023; 13:e9779. [PMID: 36713482 PMCID: PMC9873870 DOI: 10.1002/ece3.9779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 01/10/2023] [Accepted: 01/12/2023] [Indexed: 01/26/2023] Open
Abstract
Predation shapes marine benthic communities and affects prey species population dynamics in tropic and temperate coastal systems. However, information on its magnitude in systematically understudied Arctic coastal habitats is scarce. To test predation effects on the diversity and structure of Arctic benthic communities, we conducted caging experiments in which consumers were excluded from plots at two intertidal sedimentary sites in Svalbard (Longyearbyen and Thiisbukta) for 2.5 months. Unmanipulated areas served as controls and partial (open) cages were used to estimate potential cage effects. At the end of the experiment, we took one sediment core from each plot and quantified total biomass and the number of each encountered taxon. At both sites, the experimental exclusion of predators slightly changed the species composition of communities and had negligible effects on biomass, total abundance, species richness, evenness, and Shannon Index. In addition, we found evidence for cage effects, and spatial variability in the intensity of the predation effects was identified. Our study suggests that predators have limited effects on the structure of the studied intertidal macrobenthic Arctic communities, which is different from coastal soft-bottom ecosystems at lower latitudes.
Collapse
Affiliation(s)
- María José Díaz
- Alfred Wegener InstitutHelmholtz‐Zentrum für Polar‐ und MeeresforschungBremerhavenGermany,Laboratory of Aquatic Environmental Research (LACER), Centro de Estudios Avanzados, HUB AMBIENTAL UPLAUniversidad de Playa AnchaValparaísoChile
| | - Christian Buschbaum
- Alfred Wegener Institut, Helmholtz‐Zentrum für Polar‐ und MeeresforschungWadden Sea Station SyltList/SyltGermany
| | - Paul E. Renaud
- Akvaplan‐nivaFram Centre for Climate and the EnvironmentTromsøNorway,University Centre in SvalbardLongyearbyenNorway
| | - Nelson Valdivia
- Centro FONDAP de Investigaciones en Dinámica de Ecosistemas Marinos de Altas LatitudesSantiagoChile,Instituto de Ciencias Marinas y Limnológicas, Facultad de CienciasUniversidad Austral de ChileValdiviaChile
| | - Markus Molis
- Alfred Wegener InstitutHelmholtz‐Zentrum für Polar‐ und MeeresforschungBremerhavenGermany,UiT The Arctic University of NorwayTromsøNorway
| |
Collapse
|
39
|
Huntsman BM, Young MJ, Feyrer FV, Stumpner PR, Brown LR, Burau JR. Hydrodynamics and habitat interact to structure fish communities within terminal channels of a tidal freshwater delta. Ecosphere 2023. [DOI: 10.1002/ecs2.4339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Brock M. Huntsman
- U.S. Geological Survey California Water Science Center Sacramento California USA
| | - Matthew J. Young
- U.S. Geological Survey California Water Science Center West Sacramento California USA
| | - Frederick V. Feyrer
- U.S. Geological Survey California Water Science Center West Sacramento California USA
| | - Paul R. Stumpner
- U.S. Geological Survey California Water Science Center West Sacramento California USA
| | - Larry R. Brown
- U.S. Geological Survey California Water Science Center Sacramento California USA
| | - Jon R. Burau
- U.S. Geological Survey California Water Science Center West Sacramento California USA
| |
Collapse
|
40
|
Chanut PCM, Burdon FJ, Datry T, Robinson CT. Convergence in floodplain pond communities indicates different pathways to community assembly. AQUATIC SCIENCES 2023; 85:59. [PMID: 37016666 PMCID: PMC10066089 DOI: 10.1007/s00027-023-00957-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 03/11/2023] [Indexed: 05/06/2023]
Abstract
Disturbance can strongly influence ecosystems, yet much remains unknown about the relative importance of key processes (selection, drift, and dispersal) in the recovery of ecological communities following disturbance. We combined field surveys with a field experiment to elucidate mechanisms governing the recovery of aquatic macroinvertebrates in habitats of an alluvial floodplain following flood disturbance. We monitored macroinvertebrates in 24 natural parafluvial habitats over 60 days after a major flood, as well as the colonization of 24 newly-built ponds by macroinvertebrates over 45 days in the same floodplain. We examined the sources of environmental variation and their relative effects on aquatic assemblages using a combination of null models and Mantel tests. We also used a joint species distribution model to investigate the importance of primary metacommunity structuring processes during recovery: selection, dispersal, and drift. Contrary to expectations, we found that beta diversity actually decreased among natural habitats over time after the flood or the creation of the ponds, instead of increasing. This result was despite environmental predictors showing contrasting patterns for explaining community variation over time in the natural habitats compared with the experimental ponds. Flood heterogeneity across the floodplain and spatial scale differences between the experimental ponds and the natural habitats seemingly constrained the balance between deterministic and stochastic processes driving the ecological convergence of assemblages over time. While environmental selection was the dominant structuring process in both groups, biotic interactions also had a prominent influence on community assembly. These findings have profound implications towards understanding metacommunity structuring in riverscapes that includes common linkages between disturbance heterogeneity, spatial scale properties, and community composition. Supplementary Information The online version contains supplementary material available at 10.1007/s00027-023-00957-9.
Collapse
Affiliation(s)
- P. C. M. Chanut
- Department of Aquatic Ecology, Eawag, 8600 Duebendorf, Switzerland
- Institute of Integrative Biology, ETH-Zurich, 8092 Zurich, Switzerland
| | - F. J. Burdon
- Te Aka Mātuatua - School of Science, University of Waikato, Hamilton, New Zealand
| | - T. Datry
- INRAE, UR RiverLy, Centre de Lyon-Villeurbanne, Villeurbanne, France
| | - C. T. Robinson
- Department of Aquatic Ecology, Eawag, 8600 Duebendorf, Switzerland
- Institute of Integrative Biology, ETH-Zurich, 8092 Zurich, Switzerland
| |
Collapse
|
41
|
Gálvez Á, Peres-Neto PR, Castillo-Escrivà A, Bonilla F, Camacho A, García-Roger EM, Iepure S, Miralles-Lorenzo J, Monrós JS, Olmo C, Picazo A, Rojo C, Rueda J, Sahuquillo M, Sasa M, Segura M, Armengol X, Mesquita-Joanes F. Inconsistent response of taxonomic groups to space and environment in mediterranean and tropical pond metacommunities. Ecology 2023; 104:e3835. [PMID: 36199222 PMCID: PMC10078490 DOI: 10.1002/ecy.3835] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 06/22/2022] [Indexed: 02/01/2023]
Abstract
The metacommunity concept provides a theoretical framework that aims at explaining organism distributions by a combination of environmental filtering, dispersal, and drift. However, few works have attempted a multitaxon approach and even fewer have compared two distant biogeographical regions using the same methodology. We tested the expectation that temperate (mediterranean-climate) pond metacommunities would be more influenced by environmental and spatial processes than tropical ones, because of stronger environmental gradients and a greater isolation of waterbodies. However, the pattern should be different among groups of organisms depending on their dispersal abilities. We surveyed 30 tropical and 32 mediterranean temporary ponds from Costa Rica and Spain, respectively, and obtained data on 49 environmental variables. We characterized the biological communities of bacteria and archaea (from the water column and the sediments), phytoplankton, zooplankton, benthic invertebrates, amphibians and birds, and estimated the relative role of space and environment on metacommunity organization for each group and region, by means of variation partitioning using generalized additive models. Purely environmental effects were important in both tropical and mediterranean ponds, but stronger in the latter, probably due to their larger limnological heterogeneity. Spatially correlated environment and pure spatial effects were greater in the tropics, related to higher climatic heterogeneity and dispersal processes (e.g., restriction, surplus) acting at different scales. The variability between taxonomic groups in the contribution of spatial and environmental factors to metacommunity variation was very wide, but higher in active, compared with passive, dispersers. Higher environmental effects were observed in mediterranean passive dispersers, and higher spatial effects in tropical passive dispersers. The unexplained variation was larger in the tropical setting, suggesting a higher role for stochastic processes, unmeasured environmental factors, or biotic interactions in the tropics, although this difference affected some actively dispersing groups (insects and birds) more than passive dispersers. These results, despite our limitations in comparing only two regions, provide support, for a wide variety of aquatic organisms, for the classic view of stronger abiotic niche constraints in temperate areas compared with the tropics. The heterogeneous response of taxonomic groups between regions also points to a stronger influence of regional context than organism adaptations on metacommunity organization.
Collapse
Affiliation(s)
- Ángel Gálvez
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain
| | | | - Andreu Castillo-Escrivà
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain
| | - Fabián Bonilla
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - Antonio Camacho
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain
| | - Eduardo M García-Roger
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain
| | - Sanda Iepure
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain.,Emil Racovitza Institute of Speleology, Cluj Napoca, Romania
| | - Javier Miralles-Lorenzo
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain
| | - Juan S Monrós
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain
| | - Carla Olmo
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain
| | - Antonio Picazo
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain
| | - Carmen Rojo
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain
| | - Juan Rueda
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain
| | - María Sahuquillo
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain.,Subdirecció General del Medi Natural, Generalitat Valenciana, València, Spain
| | - Mahmood Sasa
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica.,Museo de Zoología, Centro de Investigación en Biodiversidad y Ecología Tropical, Universidad de Costa Rica, San Pedro, Costa Rica
| | - Mati Segura
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain
| | - Xavier Armengol
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain
| | - Francesc Mesquita-Joanes
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of València, Paterna, Spain
| |
Collapse
|
42
|
Brunner O, Chen C, Giguère T, Kawagucci S, Tunnicliffe V, Watanabe HK, Mitarai S. Species assemblage networks identify regional connectivity pathways among hydrothermal vents in the Northwest Pacific. Ecol Evol 2022; 12:e9612. [PMID: 36568865 PMCID: PMC9771708 DOI: 10.1002/ece3.9612] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/24/2022] [Accepted: 11/22/2022] [Indexed: 12/24/2022] Open
Abstract
The distribution of species among spatially isolated habitat patches supports regional biodiversity and stability, so understanding the underlying processes and structure is a key target of conservation. Although multivariate statistics can infer the connectivity processes driving species distribution, such as dispersal and habitat suitability, they rarely explore the structure. Methods from graph theory, applied to distribution data, give insights into both connectivity pathways and processes by intuitively formatting the data as a network of habitat patches. We apply these methods to empirical data from the hydrothermal vent habitats of the Northwest Pacific. Hydrothermal vents are "oases" of biological productivity and endemicity on the seafloor that are imminently threatened by anthropogenic disturbances with unknown consequences to biodiversity. Here, we describe the structure of species assemblage networks at hydrothermal vents, how local and regional parameters affect their structure, and the implications for conservation. Two complementary networks were formed from an extensive species assemblage dataset: a similarity network of vent site nodes linked by weighted edges based on their pairwise assemblage similarity and a bipartite network of species nodes linked to vent site nodes at which they are present. Using these networks, we assessed the role of individual vent sites in maintaining network connectivity and identified biogeographic sub-regions. The three sub-regions and two outlying sites are separated by their spatial arrangement and local environmental filters. Both networks detected vent sites that play a disproportionately important role in regional pathways, while the bipartite network also identified key vent sites maintaining the distinct species assemblages of their sub-regions. These regional connectivity pathways provide insights into historical colonization routes, while sub-regional connectivity pathways are of value when selecting sites for conservation and/or estimating the multivent impacts from proposed deep-sea mining.
Collapse
Affiliation(s)
- Otis Brunner
- Okinawa Institute of Science and TechnologyOkinawaJapan
| | - Chong Chen
- X‐STAR, Japan Agency for Marine‐Earth Science and Technology (JAMSTEC)YokosukaJapan
| | - Thomas Giguère
- School of Earth & Ocean SciencesUniversity of VictoriaVictoriaBritish ColumbiaCanada
| | - Shinsuke Kawagucci
- X‐STAR, Japan Agency for Marine‐Earth Science and Technology (JAMSTEC)YokosukaJapan,Project Team for Developing Innovative Technologies for Exploration of Deep‐Sea ResourcesJapan Agency for Marine‐Earth Science and Technology (JAMSTEC)YokosukaJapan
| | - Verena Tunnicliffe
- School of Earth & Ocean SciencesUniversity of VictoriaVictoriaBritish ColumbiaCanada,Department of BiologyUniversity of VictoriaVictoriaBritish ColumbiaCanada
| | | | | |
Collapse
|
43
|
Villeneuve K, Violette M, Lazar CS. From Recharge, to Groundwater, to Discharge Areas in Aquifer Systems in Quebec (Canada): Shaping of Microbial Diversity and Community Structure by Environmental Factors. Genes (Basel) 2022; 14:1. [PMID: 36672742 PMCID: PMC9858702 DOI: 10.3390/genes14010001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/14/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Groundwater recharge and discharge rates and zones are important hydrogeological characteristics of aquifer systems, yet their impact on the formation of both subterranean and surface microbiomes remains largely unknown. In this study, we used 16S rRNA gene sequencing to characterize and compare the microbial community of seven different aquifers, including the recharge and discharge areas of each system. The connectivity between subsurface and surface microbiomes was evaluated at each site, and the temporal succession of groundwater microbial communities was further assessed at one of the sites. Bacterial and archaeal community composition varied between the different sites, reflecting different geological characteristics, with communities from unconsolidated aquifers being distinct from those of consolidated aquifers. Our results also revealed very little to no contribution of surface recharge microbial communities to groundwater communities as well as little to no contribution of groundwater microbial communities to surface discharge communities. Temporal succession suggests seasonal shifts in composition for both bacterial and archaeal communities. This study demonstrates the highly diverse communities of prokaryotes living in aquifer systems, including zones of groundwater recharge and discharge, and highlights the need for further temporal studies with higher resolution to better understand the connectivity between surface and subsurface microbiomes.
Collapse
Affiliation(s)
| | | | - Cassandre Sara Lazar
- Department of Biological Sciences, University of Québec at Montréal, UQAM, C.P. 8888, Succ. Centre-Ville, Montréal, QC H3C 3P8, Canada
| |
Collapse
|
44
|
Chen C, Zhan C, Wang Y. Do functional and phylogenetic nestedness follow the same mechanisms as taxonomic nestedness? Evidence from amphibians in the largest archipelago of China. J Anim Ecol 2022; 91:2424-2436. [PMID: 36260356 DOI: 10.1111/1365-2656.13824] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 09/19/2022] [Indexed: 12/14/2022]
Abstract
Nested subset pattern (nestedness) has been raised to explain the distribution of species on islands and habitat fragments for over 60 years. However, previous studies on nestedness focused on species richness and composition and overlooked the role of species traits and phylogeny in generating and explaining nestedness. To address this gap, we sampled amphibians on 37 land-bridge islands in the largest archipelago of China, the Zhoushan Archipelago, to explore nestedness as well as the underlying causal processes through three facets of diversity, that is, taxonomic, functional and phylogenetic diversity. The taxonomic nestedness was measured through organizing the species incidence matrix to achieve a maximum value, while the functional and phylogenetic nestedness were quantified by incorporating the similarity of species in terms of their ecological traits and phylogeny. We also obtained six island characteristics and seven species traits as predictors of nestedness. Amphibian metacommunities were significantly nested in these three facets of diversity. When relating different predictors to nestedness, island area, habitat diversity and species traits were highly correlated with taxonomic nestedness. Moreover, island area and habitat diversity significantly influenced functional and phylogenetic nestedness. Therefore, the results support the selective extinction and habitat nestedness hypotheses. Interestingly, although we did not observe significant influences of island isolation on taxonomic nestedness, functional and phylogenetic diversities were significantly higher than expected when matrices were ordered by increasing distance to mainland. The result suggests that there are more functionally and phylogenetically diverse species on less-isolated islands, reflecting a selective colonization process overlooked by the traditional analysis of taxonomic nestedness. Although the three facets of nestedness and underlying processes were largely congruent, we detected the distance-related functional and phylogenetic nestedness for amphibian assemblages. Therefore, we highlight that a framework that simultaneously considers taxonomic, functional and phylogenetic nestedness can contribute to a complementary understanding of nestedness processes. In addition, it also improves our ability to conserve insular biodiversity from different perspectives.
Collapse
Affiliation(s)
- Chuanwu Chen
- Laboratory of Island Biogeography and Conservation Biology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Chengxiu Zhan
- Laboratory of Island Biogeography and Conservation Biology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Yanping Wang
- Laboratory of Island Biogeography and Conservation Biology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| |
Collapse
|
45
|
A spatially implicit model fails to predict the structure of spatially explicit metacommunities under high dispersal. Ecol Modell 2022. [DOI: 10.1016/j.ecolmodel.2022.110151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
46
|
Lee F, Simon KS, Perry GLW. Network topology mediates freshwater fish metacommunity response to loss of connectivity. Ecosphere 2022. [DOI: 10.1002/ecs2.4286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Finnbar Lee
- School of Environment The University of Auckland Auckland New Zealand
| | - Kevin S. Simon
- School of Environment The University of Auckland Auckland New Zealand
| | | |
Collapse
|
47
|
Jupke JF, Birk S, Álvarez-Cabria M, Aroviita J, Barquín J, Belmar O, Bonada N, Cañedo-Argüelles M, Chiriac G, Elexová EM, Feld CK, Ferreira MT, Haase P, Huttunen KL, Lazaridou M, Lešťáková M, Miliša M, Muotka T, Paavola R, Panek P, Pařil P, Peeters ETHM, Polášek M, Sandin L, Schmera D, Straka M, Usseglio-Polatera P, Schäfer RB. Evaluating the biological validity of European river typology systems with least disturbed benthic macroinvertebrate communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 842:156689. [PMID: 35724793 DOI: 10.1016/j.scitotenv.2022.156689] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 05/18/2022] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
Humans have severely altered freshwater ecosystems globally, causing a loss of biodiversity. Regulatory frameworks, like the Water Framework Directive, have been developed to support actions that halt and reverse this loss. These frameworks use typology systems that summarize freshwater ecosystems into environmentally delineated types. Within types, ecosystems that are minimally impacted by human activities, i.e., in reference conditions, are expected to be similar concerning physical, chemical, and biological characteristics. This assumption is critical when water quality assessments rely on comparisons to type-specific reference conditions. Lyche Solheim et al. (2019) developed a pan-European river typology system, the Broad River Types, that unifies the national Water Framework Directive typology systems and is gaining traction within the research community. However, it is unknown how similar biological communities are within these individual Broad River Types. We used analysis of similarities and classification strength analysis to examine if the Broad River Types delineate distinct macroinvertebrate communities across Europe and whether they outperform two ecoregional approaches: the European Biogeographical Regions and Illies' Freshwater Ecoregions. We determined indicator and typical taxa for the types of all three typology systems and evaluated their distinctiveness. All three typology systems captured more variation in macroinvertebrate communities than random combinations of sites. The results were similar among typology systems, but the Broad River Types always performed worse than either the Biogeographic Regions or Illies' Freshwater Ecoregions. Despite reaching statistical significance, the statistics of analysis of similarity and classification strength were low in all tests indicating substantial overlap among the macroinvertebrate communities of different types. We conclude that the Broad River Types do not represent an improvement upon existing freshwater typologies when used to delineate macroinvertebrate communities and we propose future avenues for advancement: regionally constrained types, better recognition of intermittent rivers, and consideration of biotic communities.
Collapse
Affiliation(s)
- Jonathan F Jupke
- iES, Institute of Environmental Sciences, University of Koblenz Landau, Fortstraße 7, 76829 Landau, Germany.
| | - Sebastian Birk
- Faculty of Biology and Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstrasse 5, 45141 Essen, Germany
| | - Mario Álvarez-Cabria
- IHCantabria - Instituto de Hidráulica Ambiental de la Universidad de Cantabria- Avda, Isabel Torres, 15, Parque Científico y Tecnológico de Cantabria, 39011 Santander, Spain
| | - Jukka Aroviita
- Finnish Environment Institute, Freshwater Centre, P.O. Box 413, Paavo Havaksen tie 3, FI-90014 Oulu, Finland
| | - José Barquín
- IHCantabria - Instituto de Hidráulica Ambiental de la Universidad de Cantabria- Avda, Isabel Torres, 15, Parque Científico y Tecnológico de Cantabria, 39011 Santander, Spain
| | - Oscar Belmar
- Department of Ecology and Hydrology, University of Murcia, Murcia, 30100, Espinardo Campus, Spain
| | - Núria Bonada
- Grup de Recerca "Freshwater Ecology, Hydrology and Management" (FEHM), Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona (UB), Diagonal 643, 08028 Barcelona, Catalonia, Spain
| | - Miguel Cañedo-Argüelles
- Serra Húnter fellow, "Freshwater Ecology, Hydrology, and Management" (FEHM), Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Institut de Recerca de l'Aigua (IdRA), Universitat de Barcelona (UB), Diagonal 643, 08028 Barcelona, Catalonia, Spain
| | - Gabriel Chiriac
- National Administration "Apele Romane", Edgar Quinet 6, 010017 Bucharest, Romania
| | | | - Christian K Feld
- Faculty of Biology and Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstrasse 5, 45141 Essen, Germany
| | - M Teresa Ferreira
- Forest Research Centre and Associate Laboratory TERRA, Instituto Superior de Agronomia, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Peter Haase
- Faculty of Biology and Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstrasse 5, 45141 Essen, Germany; Department of River Ecology and Conservation, Senckenberg Research Institute and Natural History Museum Frankfurt, Clamecystrasse 12, Gelnhausen 65371, Germany
| | - Kaisa-Leena Huttunen
- Department of Ecology and Genetics, University of Oulu, P.O. Box 3000, Pentti Kaiteran katu 1, FI-90014 Oulu, Finland
| | - Maria Lazaridou
- Department of Zoology, School of Biology, Aristotle University of Thessaloniki, P.O. Box 134, 54124 Thessaloníki, Greece
| | - Margita Lešťáková
- Water Research Institute, Nábrežie arm. gen. L. Svobodu 5,81249 Bratislava, Slovakia
| | - Marko Miliša
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia
| | - Timo Muotka
- Grup de Recerca "Freshwater Ecology, Hydrology and Management" (FEHM), Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona (UB), Diagonal 643, 08028 Barcelona, Catalonia, Spain; Department of Ecology and Genetics, University of Oulu, P.O. Box 3000, Pentti Kaiteran katu 1, FI-90014 Oulu, Finland
| | - Riku Paavola
- Oulanka Research Station, University of Oulu Infrastructure Platform, Liikasenvaarantie 134, FI-93900 Kuusamo, Finland
| | - Piotr Panek
- Department of Environmental Monitoring, Chief Inspectorate for Environmental Protection, Aleje Jerozolimskie 92, 00-807 Warszawa, Poland
| | - Petr Pařil
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Edwin T H M Peeters
- Aquatic Ecology and Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Marek Polášek
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; T. G. Masaryk Water Research Institute, p. r. i., Mojmírovo náměstí 16, 612 00 Brno, Czech Republic
| | - Leonard Sandin
- Norwegian Institute for Water Research, Økernveien 94, NO-0579 Oslo, Norway
| | - Dénes Schmera
- Balaton Limnological Research Institute, Klebelsberg Kuno u. 3, 8237 Tihany, Hungary
| | - Michal Straka
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; T. G. Masaryk Water Research Institute, p. r. i., Mojmírovo náměstí 16, 612 00 Brno, Czech Republic
| | - Philippe Usseglio-Polatera
- Université de Lorraine, CNRS, UMR 7360, LIEC, Laboratoire Interdisciplinaire des Environnements Continentaux, Rue du Général Delestraint, 57070 Metz, France
| | - Ralf B Schäfer
- iES, Institute of Environmental Sciences, University of Koblenz Landau, Fortstraße 7, 76829 Landau, Germany
| |
Collapse
|
48
|
von Gastrow L, Michel E, Legrand J, Amelot R, Segond D, Guezenec S, Rué O, Chable V, Goldringer I, Dousset X, Serpolay-Bessoni E, Taupier-Letage B, Vindras-Fouillet C, Onno B, Valence F, Sicard D. Microbial community dispersal from wheat grains to sourdoughs : a contribution of participatory research. Mol Ecol 2022; 32:2413-2427. [PMID: 35892285 DOI: 10.1111/mec.16630] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 07/11/2022] [Indexed: 11/30/2022]
Abstract
Understanding microbial dispersal is critical to understand the dynamics and evolution of microbial communities. However, microbial dispersal is difficult to study because of uncertainty about their vectors of migration. This applies to both microbial communities in natural and human-associated environments. Here, we studied microbial dispersal along the sourdoughs bread making chain using a participatory research approach. Sourdough is a naturally fermented mixture of flour and water. It hosts a community of bacteria and yeasts whose origins are only partially known. We analysed the potential of wheat grains and flour to serve as an inoculum for sourdough microbial communities using 16S rDNA and ITS1 metabarcoding. First, in an experiment involving farmers, a miller and bakers, we followed the microbiota from grains to newly initiated and propagated sourdoughs. Second, we compared the microbiota of 46 sourdough samples collected everywhere in France, and of the flour used for their backslopping. The core microbiota detected on the seeds, in the flour and in the sourdough was composed mainly of microbes known to be associated with plants and not living in sourdoughs. No sourdough yeast species were detected on grains and flours. Sourdough lactic acid bacteria were rarely found in flour. When they were, they did not have the same amplicon sequence variant (ASV) as found in the corresponding sourdough. However, the low sequencing depth for bacteria in flour did not allow us to draw definitive conclusion. Thus, our results showed that sourdough yeasts did not come from flour, and suggest that neither do sourdough LAB.
Collapse
Affiliation(s)
- Lucas von Gastrow
- SPO, INRAE, Montpellier SupAgro, Montpellier, France.,STLO, INRAE, Institut Agro, Rennes Cedex, France
| | - Elisa Michel
- SPO, INRAE, Montpellier SupAgro, Montpellier, France.,Oniris, Laboratoire MicrobioTech, UMR GEPEA 6144, Rue de la Géraudière CS 82225, Nantes Cedex 3, France
| | - Judith Legrand
- Génétique Quantitative et Evolution le Moulon, Université Paris-Sud, INRAE, CNRS, AgroParisTech, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Rémy Amelot
- SPO, INRAE, Montpellier SupAgro, Montpellier, France
| | - Diego Segond
- SPO, INRAE, Montpellier SupAgro, Montpellier, France
| | | | - Olivier Rué
- Université Paris-Saclay, INRAE, MaIAGE, Jouy-en-Josas, France.,Université Paris-Saclay, INRAE, BioinfOmics, MIGALE bioinformatics facility, Jouy-en-Josas, France
| | | | - Isabelle Goldringer
- Génétique Quantitative et Evolution le Moulon, Université Paris-Sud, INRAE, CNRS, AgroParisTech, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Xavier Dousset
- Oniris, Laboratoire MicrobioTech, UMR GEPEA 6144, Rue de la Géraudière CS 82225, Nantes Cedex 3, France
| | | | - Bruno Taupier-Letage
- Institut Technique de l'agriculture et de l'Alimentation Biologique, Paris, France
| | | | - Bernard Onno
- Oniris, Laboratoire MicrobioTech, UMR GEPEA 6144, Rue de la Géraudière CS 82225, Nantes Cedex 3, France
| | | | | |
Collapse
|
49
|
Blowes SA, Daskalova GN, Dornelas M, Engel T, Gotelli NJ, Magurran AE, Martins IS, McGill B, McGlinn DJ, Sagouis A, Shimadzu H, Supp SR, Chase JM. Local biodiversity change reflects interactions among changing abundance, evenness, and richness. Ecology 2022; 103:e3820. [DOI: 10.1002/ecy.3820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/30/2022] [Accepted: 06/02/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Shane A. Blowes
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Germany
- Department of Computer Science Martin Luther University Halle‐Wittenberg Halle (Salle) Germany
| | - Gergana N. Daskalova
- School of GeoSciences University of Edinburgh Scotland, UK
- International Institute for Applied Systems Analysis (IIASA) Laxenburg Austria
| | - Maria Dornelas
- Centre for Biological Diversity University of St Andrews KY16 9TH
| | - Thore Engel
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Germany
- Department of Computer Science Martin Luther University Halle‐Wittenberg Halle (Salle) Germany
| | | | - Anne E. Magurran
- Centre for Biological Diversity University of St Andrews KY16 9TH
| | - Inês S. Martins
- Centre for Biological Diversity University of St Andrews KY16 9TH
- Leverhulme Centre for Anthropocene Biodiversity and Department of Biology University of York York UK
| | - Brian McGill
- School of Biology and Ecology and Mitchell Center for Sustainability Solutions University of Maine Orono, ME United States
| | | | - Alban Sagouis
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Germany
- Department of Computer Science Martin Luther University Halle‐Wittenberg Halle (Salle) Germany
| | - Hideyasu Shimadzu
- Department of Mathematical Sciences Loughborough University UK
- Graduate School of Public Health Teikyo University Tokyo Japan
| | - Sarah R. Supp
- Data Analytics Program Denison University Granville Ohio USA
| | - Jonathan M. Chase
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Germany
- Department of Computer Science Martin Luther University Halle‐Wittenberg Halle (Salle) Germany
| |
Collapse
|
50
|
The Synergy of Patterns vs. Processes at Community Level: A Key Linkage for Subtropical Native Forests along the Urban Riparian Zone. FORESTS 2022. [DOI: 10.3390/f13071041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Riparian zones possesses unique ecological position with biota differing from aquatic body and terrestrial lands, and plant–animal coevolution through a propagule-dispersal process may be the main factor for the framework of riparian vegetation was proposed. In the current study, the riparian forests and avifauna along with three subtropical mountainous riparian belts of Chongqing, China, were investigated, and multivariate analysis technique was adopted to examine the associations among the plants’ and birds’ species. The results show that: (1) the forest species’ composition and vertical layers are dominated by native catkins of Moraceae species, which have the reproductive traits with small and numerous propagules facilitating by frugivorous bird species, revealing an evolutionary trend different from the one in the terrestrial plant climax communities in the subtropical evergreen broad-leaved forests. The traits may provide a biological base for the plant–bird coevolution; (2) there are significant associations of plant–bird species clusters, i.e., four plant–bird coevolution groups (PBs) were divided out according to the plant species’ dominance and growth form relating to the fruit-dispersing birds’ abundance; (3) the correlation intensity within a PB ranks as PB I > II > IV > III, indicating the PB I is the leading type of coevolution mainly shaped by the dominant plant species of Moraceae; (4) the PB correlation may be a key node between patterns vs. process of a riparian ecosystem responsible for the riparian native vegetation, or even the ecosystem health. Our results contribute understanding the plant–animal coevolution interpreting the forests’ structures in riparian environments. The results may also be used by urban planner and managers to simulate the patterns for restoring a more stable riparian biota, a better functioning ecosystem in subtropical zone.
Collapse
|