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Quiroz-Martínez B, Hernández-Alcántara P, Salas de León DA, Solís-Weiss V, Monreal Gómez MA, Álvarez Sánchez LF. Taxonomic distinctness and diversity patterns of a polychaete (Annelida) community on the continental shelf of the Southern Gulf of Mexico. PLoS One 2024; 19:e0303250. [PMID: 38718003 PMCID: PMC11078371 DOI: 10.1371/journal.pone.0303250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 04/22/2024] [Indexed: 05/12/2024] Open
Abstract
The spatial patterns of taxonomic diversity of annelid polychaete species from the continental shelf in the Southern Gulf of Mexico were examined in this study. We used taxonomic distinctness and its spatial variations to explore the diversity patterns and how they change between Southern Gulf of Mexico regions. In addition, using taxonomic distinctness as a dissimilarity measure and Ward's Clustering, we characterized three distinct faunal assemblages. We also investigated patterns of richness, taxonomic distinctness, and distance decay of similarity between sampling stations as a ß-diversity measure. Finally, we examined the spatial relationships between polychaete assemblages and environmental variables to test the relative importance of spatial and environmental components in annelid polychaete community structure from the Southern Gulf of Mexico. We used a combination of eigenvector-based multivariate analyses (dbMEMs) and distance-based redundancy analysis (dbRDA) to quantify the relative importance of these explanatory variables on the spatial variations of taxonomic distinctness. The significance level of spatial and environmental components to the distribution of polychaete species showed that the combined effect of spatial processes and sediment characteristics explained a higher percentage of the variance than those parameters could alone.
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Affiliation(s)
- Benjamín Quiroz-Martínez
- Unidad Académica de Ecología y Biodiversidad Acuática, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Pablo Hernández-Alcántara
- Unidad Académica de Ecología y Biodiversidad Acuática, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - David Alberto Salas de León
- Unidad Académica de Ecología y Biodiversidad Acuática, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Vivianne Solís-Weiss
- Unidad Académica de Sistemas Arrecifales, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Puerto Morelos, Quintana Roo, México
| | - María Adela Monreal Gómez
- Unidad Académica de Ecología y Biodiversidad Acuática, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - León Felipe Álvarez Sánchez
- Unidad de Informática Marina, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Ciudad de México, México
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Li Z, Zhu H, García-Girón J, Gu S, Heino J, Xiong X, Yang J, Zhao X, Jia Y, Xie Z, Zhang J. Historical and dispersal processes drive community assembly of multiple aquatic taxa in glacierized catchments in the Qinghai-Tibet plateau. Environ Res 2024; 251:118746. [PMID: 38513751 DOI: 10.1016/j.envres.2024.118746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/27/2024] [Accepted: 03/16/2024] [Indexed: 03/23/2024]
Abstract
Understanding the relative role of dispersal dynamics and niche constraints is not only a core task in community ecology, but also becomes an important prerequisite for bioassessment. Despite the recent progress in our knowledge of community assembly in space and time, patterns and processes underlying biotic communities in alpine glacierized catchments remain mostly ignored. To fill this knowledge gap, we combined the recently proposed dispersal-niche continuum index (DNCI) with traditional constrained ordinations and idealized patterns of species distributions to unravel community assembly mechanisms of different key groups of primary producers and consumers (i.e., phytoplankton, epiphytic algae, zooplankton, macroinvertebrates, and fishes) in rivers in the Qinghai-Tibet Plateau, the World's Third Pole. We tested whether organismal groups with contrasting body sizes differed in their assembly processes, and discussed their applicability in bioassessment in alpine zones. We found that community structure of alpine river biotas was always predominantly explained in terms of dispersal dynamics and historical biogeography. These patterns are most likely the result of differences in species-specific functional attributes, the stochastic colonization-extinction dynamics driven by multi-year glacier disturbances and the repeated hydrodynamic separation among alpine catchments after the rising of the Qilian mountains. Additionally, we found that the strength of dispersal dynamics and niche constraints was partially mediated by organismal body sizes, with dispersal processes being more influential for microscopic primary producers. Finding that zooplankton and macroinvertebrate communities followed clumped species replacement structures (i.e., Clementsian gradients) supports the notion that environmental filtering also contributes to the structure of high-altitude animal communities in glacierized catchments. In terms of the applied fields, we argue that freshwater bioassessment in glacierized catchments can benefit from incorporating the metacommunity perspective and applying novel approaches to (i) detect the optimal spatial scale for species sorting and (ii) identify and eliminate the species that are sensitive to dispersal-related processes.
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Affiliation(s)
- Zhengfei Li
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Huan Zhu
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Jorge García-Girón
- Department of Biodiversity and Environmental Management, University of León, Campus de Vegazana, 24007, León, Spain; Geography Research Unit, University of Oulu, P.O. Box 3000, FI-90014, Oulu, Finland
| | - Siyu Gu
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Jani Heino
- Geography Research Unit, University of Oulu, P.O. Box 3000, FI-90014, Oulu, Finland
| | - Xiong Xiong
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Jiali Yang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Xianfu Zhao
- Institute of Hydroecology, Ministry of Water Resources and Chinese Academy of Sciences, Wuhan, China
| | - Yintao Jia
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Zhicai Xie
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.
| | - Junqian Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.
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Jiang X, Mao J, Sun Z, Alahuhta J, Heino J, He D. Disentangling the effects of geographic distance, environment and history on beta diversity of freshwater fish at a biogeographical crossroads. J Environ Manage 2024; 355:120490. [PMID: 38457897 DOI: 10.1016/j.jenvman.2024.120490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/10/2024]
Abstract
Examining assemblage turnover and variation along geographic and environmental distances is a useful approach to evaluate beta diversity patterns and associated driving mechanisms. However, such studies are relatively limited in freshwater systems. Here, we compared the relationships between freshwater fish beta diversity and geographic distances among 165 hydrological units (HUs) in four zoogeographical regions (PA, Palearctic Region; CA, High Central Asia; EA, East Asia, SA, South Asia) across China and adjacent areas. This area can be considered a biogeographical crossroads, where faunal composition shares elements with different biogeographic and evolutionary origins. We found a considerably high level of between-HU overall dissimilarity (βsor, range from ca. 0.60 to 0.85) in all four regions, mainly due to the turnover component (the relative contribution of βsim to βsor ranged from 60% to 90%). In general, βsor and βsim both significantly increased with geographic distance (except in PA), whereas the nestedness-resultant component (βsne) decreased with geographic distance. The intercepts and slopes of the relationships between dissimilarities and distance (RDDs) both varied significantly among the four regions. The intercepts of βsor and βsim were both highest in SA, followed by CA, PA and EA, implying different levels of fish faunal heterogeneity at short distances. In contrast, the slopes of these two dissimilarities followed the decreasing trend from EA > CA > SA > PA, suggesting different environmental suitability and dispersal ability of fish species among regions. Variation partitioning in distance-based redundancy analysis showed that the spatial and historical factors were more important than area-heterogeneity and energy factors across all HUs and within three individual ecoregions (EA, SA and CA), but spatial factors were non-significant in PA. Our study highlighted the usefulness of RDDs in understanding biogeographical patterns and enhancing the biodiversity conservation of freshwater fishes.
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Affiliation(s)
- Xiaoming Jiang
- State Key Laboratory of Eco-hydraulic in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, 710048, Shaanxi, China; Geography Research Unit, University of Oulu, P. O. Box 8000, FI-90014, Oulu, Finland
| | - Jiaping Mao
- State Key Laboratory of Eco-hydraulic in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, 710048, Shaanxi, China
| | - Zhiwei Sun
- State Key Laboratory of Eco-hydraulic in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, 710048, Shaanxi, China
| | - Janne Alahuhta
- Geography Research Unit, University of Oulu, P. O. Box 8000, FI-90014, Oulu, Finland
| | - Jani Heino
- Geography Research Unit, University of Oulu, P. O. Box 8000, FI-90014, Oulu, Finland
| | - Dekui He
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China.
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Gilbert JD, Márquez FJ, Guerrero F. Assessing the Zooplankton Metacommunity (Branchiopoda and Copepoda) from Mediterranean Wetlands in Agricultural Landscapes. Diversity 2023; 15:362. [DOI: 10.3390/d15030362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
Mediterranean wetlands are suitable ecosystems for studying metacommunity theory, since they are isolated ecosystems within a land matrix with well-established limits, often with watersheds destined for agricultural uses. The zooplankton community of wetlands in agricultural landscapes is the result of processes that operate in a different multiscale context. We selected 24 ponds in Alto Guadalquivir region (SE Spain) with different local environmental variables (biological, limnological and land uses). The zooplankton community of the wetlands under study consists of a total of 60 species: 38 branchiopods and 22 copepods. This community (total, branchiopods and copepods) was analysed through two different and complementary metacommunity approaches. The pattern approach determines the species distribution along environmental gradients, and the mechanistic approach considers the involved processes, such as environmental control and dispersal limitation. The results indicated a nested metacommunity, in which five limnological variables, three land uses and six spatial variables are the main drivers that explain zooplankton distribution in these wetlands. In conclusion, species sorting and dispersal processes play a role in the structuring of the zooplankton metacommunity. This conclusion has implications for the development of adequate management policies on Mediterranean wetland protection and diversity conservation in agricultural contexts.
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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] [What about the content of this article? (0)] [Affiliation(s)] [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.
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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
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Schmidt RC, Woods T, Nyingi WD. Drivers of species richness and beta diversity of fishes in an Afrotropical intermittent river system. Ecol Evol 2022; 12:e9659. [PMID: 36590335 PMCID: PMC9797352 DOI: 10.1002/ece3.9659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 12/03/2022] [Accepted: 12/06/2022] [Indexed: 12/30/2022] Open
Abstract
Tropical freshwater ecosystems are some of the most threatened systems yet remain understudied relative to temperate systems. Here, we look at the drivers of community structure of fishes in a tropical and intermittent system in central Kenya. We conducted monthly samples within the upper Northern Ewaso Ng'iro to assess variation in community composition and abiotic characteristics. We analyzed species richness along the longitudinal gradient, computed beta diversity within the system, relative contributions of each site, and partitioned beta diversity metrics into nestedness and turnover components. We found that, similar to temperate intermittent systems, species richness varied along the longitudinal gradient, nestedness contributions to beta diversity exceeded those of turnover, and environmental and spatial variables determined patterns of beta diversity. Sites at the highest and lowest ends of the species richness gradient showed the highest contributions to beta diversity, suggesting sites important for preservation or restoration initiatives, respectively. With ongoing water extraction and conflict over resources throughout the region, this study highlights the need for further investigations of the effects of multiple stressors on biodiversity patterns and ecosystem functioning in tropical stream communities.
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Affiliation(s)
- Ray C. Schmidt
- Biology DepartmentRandolph‐Macon CollegeAshlandVirginiaUSA,Division of FishesNational Museum of Natural HistoryWashingtonDistrict of ColumbiaUSA
| | - Taylor Woods
- Department of Ecology and Evolutionary BiologyThe University of TennesseeKnoxvilleTennesseeUSA
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Chen H, Chen Z, Chu X, Deng Y, Qing S, Sun C, Wang Q, Zhou H, Cheng H, Zhan W, Wang Y. Temperature mediated the balance between stochastic and deterministic processes and reoccurrence of microbial community during treating aniline wastewater. Water Res 2022; 221:118741. [PMID: 35752094 DOI: 10.1016/j.watres.2022.118741] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/09/2022] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
Seasonal temperature changes significantly affect microbial community diversity, composition, and performance in wastewater treatment plants. However, the community assembly mechanisms under seasonal temperature variations remain unclear. Here, we carried out temperature cycling experiments (30 °C, 35 °C, 37 °C, 40 °C, 42 °C, 45 °C, 40 °C, and 30 °C) to investigate how temperature impacts microbial performance and co-occurrence network and how assembly processes determine the structure and function of microbial communities during treating aniline wastewater. During the 195-day operation, the system achieved an efficient and stable aniline removal of 99%. Interestingly, α-diversity and network complexity were negatively correlated with temperature but could be recovered when the temperature was returned to 30 °C. The results showed that functional redundancy was probably responsible for the excellent microbial performance during the whole process. Null model analyses presented that deterministic process dominated the community when the temperature was 30 °C, and stochasticity dominated the assembly process when the temperature was over 30 °C. Overall, the balance between stochastic and deterministic processes in the treatment of aniline wastewater mediated the reoccurrence of microbial community and co-occurrence network at different temperatures. This study provides new insights into microbial community reoccurrence under seasonal temperature changes and a theoretical basis for regulating microbial communities in wastewater treatment plants.
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Affiliation(s)
- Hui Chen
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Zhu Chen
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy, Ministry of Education, Changsha 410083, China
| | - Xueyan Chu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Yan Deng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Shengqiang Qing
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Chongran Sun
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Qi Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Hongbo Zhou
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy, Ministry of Education, Changsha 410083, China
| | - Haina Cheng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy, Ministry of Education, Changsha 410083, China
| | - Wenhao Zhan
- National Key Laboratory of Human Factors Engineering, China Astronauts Research and Training Center, Beijing 100094, China
| | - Yuguang Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy, Ministry of Education, Changsha 410083, China.
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Shu W, Wang P, Xu Q, Zeng T, Ding M, Zhang H, Nie M, Huang G. Coupled effects of landscape structures and water chemistry on bacterioplankton communities at multi-spatial scales. Sci Total Environ 2022; 811:151350. [PMID: 34728200 DOI: 10.1016/j.scitotenv.2021.151350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 10/08/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
Bacterioplankton communities in rivers are strongly influenced by the surrounding landscape, yet the relationships between land use and bacterioplankton communities at multi-spatial scales and the mechanisms that shape bacterioplankton communities remain unclear. Here, we collected surface water samples from 14 tributaries of the Yuan River, a secondary tributary of the Yangtze River, which has been heavily impacted by human activities. We characterized the bacterioplankton communities by high-throughput sequencing techniques, and managed to identify the mechanisms governing bacterioplankton community assembly. The results showed that, in general, both landscape compositions and landscape configurations had significant effects on bacterial communities, and the effects were greater at the buffer scale than at the sub-basin scale. Additionally, there was no distinct distance-decay pattern for the effects of landscape structures on bacterial communities from the near-distance (100 m) to the long-distance (1000 m) buffer zones, with the maximal effects occurring in the 1000 m circular buffer (wet season) and 500 m riparian buffer (dry season) zone, respectively. Land use influenced the bacterioplankton community both directly through exogenous inputs (mass effect) and indirectly by affecting water chemistry (species sorting). Variance partitioning analyses showed that the total explanations of bacterial community variations by water chemistry and the intersections of water chemistry and land use (56.2% in wet season and 50.4% in dry season) were higher than that of land use alone (6.1% in wet season and 25.4% in dry season). These suggest that mass effects and species sorting jointly shaped bacterial community assembly, but that the effects of species sorting outweighed those of mass effects. Nevertheless, more biotic and abiotic factors need to be considered to better understand the microbial assembly mechanisms in anthropogenically influenced riverine ecosystems.
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Affiliation(s)
- Wang Shu
- School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, Jiangxi, China; Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Sino-Danish College of University of Chinese Academy of Sciences, Beijing 101408, China; Sino-Danish Centre for Education and Research, Beijing 101408, China
| | - Peng Wang
- School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, Jiangxi, China; Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, Jiangxi, China.
| | - Qiyu Xu
- School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Ting Zeng
- School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Minjun Ding
- School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, Jiangxi, China; Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Hua Zhang
- School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, Jiangxi, China; Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Minghua Nie
- School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, Jiangxi, China; Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Gaoxiang Huang
- School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, Jiangxi, China; Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
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Liu D, Yu H, Lu K, Guan Q, Wu H. Freshwater Releases Into Estuarine Wetlands Change the Determinants of Benthic Invertebrate Metacommunity Structure. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.721628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In recent years, the relative importance of the processes driving metacommunity composition has aroused extensive attention and become a powerful approach to identify community patterns and their regulatory mechanisms. We investigated variations in the composition of benthic community in restored wetlands and natural wetlands in the Yellow River Delta (Shandong Province, China). First, spatial structures within each wetland were modeled with Moran eigenvector maps. Next, the variation in community structure among local environmental and spatial variables was partitioned using constrained ordination, and the “elements of metacommunity structure” analysis was used to determine the patterns of best fit for species distributions within metacommunities. Finally, the null model was used to analyze non-random patterns of species co-occurrence. The community structure of benthic invertebrates in restored wetlands and natural wetlands differed significantly. The benthic invertebrate metacommunity structure showed a nested distribution in restored wetlands and a quasi-Clementsian structure in natural wetlands. Pure environmental fractions and pure spatial fractions were critical in regulating benthic invertebrate metacommunities of restored wetlands. In natural wetlands, pure spatial fractions and the interaction between environmental and spatial factors (shared fractions) played a major role in the metacommunity. A species co-occurrence analysis showed that species co-occurred more frequently than expected by chance, demonstrating that biotic interactions were not the main driver of metacommunity structures in both wetland types. Accordingly, the benthic invertebrate metacommunity in estuarine wetlands following freshwater releases was mostly determined by environmental and spatial effects, which resulted in a metacommunity with nested distribution. These results are important for biodiversity protection and ecosystem management of estuarine wetlands in the Yellow River Delta.
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Quiroz-martínez B, Hernández-alcántara P, Salas-de-león DA, Solís-weiss V. Polychaete (Annelida) Diversity Patterns in Southern Gulf of Mexico: The Influence of Spatial Structure and Environmental Variables. Diversity 2021; 13:425. [DOI: 10.3390/d13090425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A comprehensive database was built to examine the spatial diversity patterns of polychaete species from the continental shelf in Southern Gulf of Mexico. Using Cluster and nMDS analysis we found the composition of polychaete species to be different between the terrigenous and carbonate regions of the Gulf. To test the relative importance of spatial and environmental components in the polychaetae community structure in the Southern Gulf of Mexico, we examined the spatial relationships between polychaetae assemblages and environmental variables over broad geographical scales. A distance-based redundancy analysis (dbRDA) and variation partitioning was used to quantify the relative importance of these explanatory variables on the spatial variations of species richness and composition. Variation partitioning is an important tool to investigate the importance of spatial structure to species distribution in communities, but it has not yet been used in marine ecosystems. The significance level of spatial and environmental components to the distribution of polychaete species showed that the combined effect of spatial processes and sediment characteristics explained a higher percentage of variance than those parameters could alone.
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Gálvez Á, Aguilar-Alberola JA, Armengol X, Bonilla F, Iepure S, Monrós JS, Olmo C, Rojo C, Rueda J, Rueda R, Sasa M, Mesquita-Joanes F. Environment and Space Rule, but Time Also Matters for the Organization of Tropical Pond Metacommunities. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.558833] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Li Z, Xing Y, Liu Z, Chen X, Jiang X, Xie Z, Heino J. Seasonal changes in metacommunity assembly mechanisms of benthic macroinvertebrates in a subtropical river basin. Sci Total Environ 2020; 729:139046. [PMID: 32498180 DOI: 10.1016/j.scitotenv.2020.139046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 04/22/2020] [Accepted: 04/25/2020] [Indexed: 06/11/2023]
Abstract
Unraveling the ecological factors that control variation in local community structure in space and time is fundamental to metacommunity ecology. In this scenario, environmental filtering and spatial processes are recognized as important drivers of community assembly, yet their relative importance is anticipated to vary for biological communities in different seasons, network positions and organisms with distinct dispersal modes. In this study, we used a dataset (macroinvertebrate communities and environmental variables) collected in different seasons from the Ganjiang River in China to test the above ideas. We divided the whole metacommunity in each season into mainstream communities, tributary communities, strictly aquatic dispersers and aquatic/aerial dispersers, and subsequently used variation partitioning to examine the relative contribution of environmental and spatial factors separately for the overall and decomposed components of the metacommunity. Our results showed that both environmental filtering and spatial processes were important drivers of variation in community structure, yet their explanatory powers varied considerably among seasons. Environmental filtering was the primary driver of metacommunity organization in most scenarios, while the effects of spatial processes surpassing environmental filtering occurred only sporadically. For communities in different network positions, tributary communities were structured by both strong environmental filtering and profound effects of spatial processes via dispersal limitation. However, communities in mainstream sites were mainly determined by environmental filtering, and the effects of spatial processes were almost negligible. Moreover, environmental filtering was clearly more important for aquatic/aerial dispersers, while spatial processes were more influential for strictly aquatic dispersers. We thus concluded that environmental filtering, spatial processes, network position and dispersal mode can interact to regulate metacommunity organization of riverine macroinvertebrates. Considering that the relative contribution of these factors varied among seasons, we strongly uphold the idea that community ecology research should go beyond one-season snapshot surveys in river networks.
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Affiliation(s)
- Zhengfei Li
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Yuan Xing
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhenyuan Liu
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiao Chen
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xuankong Jiang
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhicai Xie
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Jani Heino
- Freshwater Centre, Finnish Environment Institute, Paavo Havaksen Tie 3, P.O. Box 413, FI-90014 Oulu, Finland
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Borges PP, Dias MS, Carvalho FR, Casatti L, Pompeu PS, Cetra M, Tejerina-Garro FL, Súarez YR, Nabout JC, Teresa FB. Stream fish metacommunity organisation across a Neotropical ecoregion: The role of environment, anthropogenic impact and dispersal-based processes. PLoS One 2020; 15:e0233733. [PMID: 32453798 PMCID: PMC7250414 DOI: 10.1371/journal.pone.0233733] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 05/11/2020] [Indexed: 11/19/2022] Open
Abstract
Understanding how assemblages are structured in space and the factors promoting their distributions is one of the main goals in Ecology, however, studies regarding the distribution of organisms at larger scales remain biased towards terrestrial groups. We attempt to understand if the structure of stream fish metacommunities across a Neotropical ecoregion (Upper Paraná-drainage area of 820,000 km2) are affected by environmental variables, describing natural environmental gradient, anthropogenic impacts and spatial predictors. For this, we obtained 586 sampling points of fish assemblages in the ecoregion and data on environmental and spatial predictors that potentially affect fish assemblages. We calculated the local beta diversity (Local Contribution to Beta Diversity, LCBD) and alpha diversity from the species list, to be used as response variables in the partial regression models, while the anthropogenic impacts, environmental gradient and spatial factors were used as predictors. We found a high total beta diversity for the ecoregion (0.41) where the greatest values for each site sampled were located at the edges of the ecoregion, while richer communities were found more centrally. All sets of predictors explained the LCBD and alpha diversity, but the most important was dispersal variables, followed by the natural environmental gradient and anthropogenic impact. However, we found an increase in the models' prediction power through the shared effect. Results suggest that environmental filters (i.e. environmental variables such as climate, hydrology and anthropogenic impact) and dispersal limitation together shape fish assemblages of the Upper Paraná ecoregion, showing the importance of using multiple sets of predictors to understand the processes structuring biodiversity distribution.
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Affiliation(s)
- Pedro Paulino Borges
- Laboratório de Biogeografia e Ecologia Aquática (Bioecol), Universidade Estadual de Goiás, Anápolis, Goiás, Brazil
| | - Murilo Sversut Dias
- Departamento de Ecologia, Universidade de Brasília, Distrito Federal, Brasília, Brazil
| | - Fernando Rogério Carvalho
- Laboratório de Ictiologia, Setor de Zoologia, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Lilian Casatti
- Departamento de Zoologia e Botânica, UNESP, São José do Rio Preto, São Paulo, Brazil
| | - Paulo Santos Pompeu
- Laboratório de Ecologia e Conservação de Peixes, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - Mauricio Cetra
- Departamento de Ciências Ambientais (DCA), Universidade Federal de São Carlos, São Paulo, Brazil
| | - Francisco Leonardo Tejerina-Garro
- Centro de Biologia Aquática, Pontifícia Universidade Católica de Goiás, Goiânia, Goiás, Brazil
- Laboratório de Biodiversidade-PPSTMA, UniEVANGÉLICA, Anápolis, Goiás, Brazil
| | - Yzel Rondon Súarez
- Centro Integrado de Análise e Monitoramento Ambiental (CInAM), Universidade Estadual do Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - João Carlos Nabout
- Laboratório de Biogeografia e Ecologia Aquática (Bioecol), Universidade Estadual de Goiás, Anápolis, Goiás, Brazil
| | - Fabrício Barreto Teresa
- Laboratório de Biogeografia e Ecologia Aquática (Bioecol), Universidade Estadual de Goiás, Anápolis, Goiás, Brazil
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He S, Soininen J, Chen K, Wang B. Environmental Factors Override Dispersal-Related Factors in Shaping Diatom and Macroinvertebrate Communities Within Stream Networks in China. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.00141] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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15
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Gomes LF, Barbosa JC, de Oliveira Barbosa H, Vieira MC, Vieira LCG. Environmental and spatial influences on stream zooplankton communities of the Brazilian Cerrado. COMMUNITY ECOL 2020. [DOI: 10.1007/s42974-020-00008-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Wang J, Hu J, Tang T, Heino J, Jiang X, Li Z, Xie Z. Seasonal shifts in the assembly dynamics of benthic macroinvertebrate and diatom communities in a subtropical river. Ecol Evol 2020; 10:692-704. [PMID: 32015836 PMCID: PMC6988552 DOI: 10.1002/ece3.5904] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 10/10/2019] [Accepted: 11/18/2019] [Indexed: 11/15/2022] Open
Abstract
Identifying seasonal shifts in community assembly for multiple biological groups is important to help enhance our understanding of their ecological dynamics. However, such knowledge on lotic assemblages is still limited. In this study, we used biological traits and functional diversity indices in association with null model analyses to detect seasonal shifts in the community assembly mechanisms of lotic macroinvertebrates and diatoms in an unregulated subtropical river in China. We found that functional composition and functional diversity (FRic, FEve, FDis, MNN, and SDNN) showed seasonal variation for macroinvertebrate and diatom assemblages. Null models suggested that environmental filtering, competitive exclusion, and neutral process were all important community assembly mechanisms for both biological groups. However, environmental filtering had a stronger effect on spring macroinvertebrate assemblages than autumn assemblages, but the effect on diatom assemblages was the same in both seasons. Moreover, macroinvertebrate and diatom assemblages were shaped by different environmental factors. Macroinvertebrates were filtered mainly by substrate types, velocity, and CODMn, while diatoms were mainly shaped by altitude, substrate types, and water quality. Therefore, our study showed (a) that different biological assemblages in a river system presented similarities and differences in community assembly mechanisms, (b) that multiple processes play important roles in maintaining benthic community structure, and (c) that these patterns and underlying mechanisms are seasonally variable. Thus, we highlight the importance of exploring the community assembly mechanisms of multiple biological groups, especially in different seasons, as this is crucial to improve the understanding of river community changes and their responses to environmental degradation.
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Affiliation(s)
- Jun Wang
- State Key Laboratory of Freshwater Ecology and BiotechnologyInstitute of HydrobiologyChinese Academy of SciencesWuhanChina
| | - Jiancheng Hu
- State Key Laboratory of Freshwater Ecology and BiotechnologyInstitute of HydrobiologyChinese Academy of SciencesWuhanChina
- University of Chinese Academy of SciencesBeijingChina
| | - Tao Tang
- State Key Laboratory of Freshwater Ecology and BiotechnologyInstitute of HydrobiologyChinese Academy of SciencesWuhanChina
| | - Jani Heino
- Freshwater CentreFinnish Environment InstituteOuluFinland
| | - Xiaoming Jiang
- State Key Laboratory of Freshwater Ecology and BiotechnologyInstitute of HydrobiologyChinese Academy of SciencesWuhanChina
| | - Zhengfei Li
- State Key Laboratory of Freshwater Ecology and BiotechnologyInstitute of HydrobiologyChinese Academy of SciencesWuhanChina
| | - Zhicai Xie
- State Key Laboratory of Freshwater Ecology and BiotechnologyInstitute of HydrobiologyChinese Academy of SciencesWuhanChina
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López‐Delgado EO, Winemiller KO, Villa‐Navarro FA. Local environmental factors influence beta‐diversity patterns of tropical fish assemblages more than spatial factors. Ecology 2019; 101:e02940. [DOI: 10.1002/ecy.2940] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 09/20/2019] [Accepted: 10/18/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Edwin O. López‐Delgado
- Department of Wildlife and Fisheries Sciences Texas A&M University College Station Texas 77843 USA
- Grupo de Investigación en Zoología Facultad de Ciencias Universidad del Tolima Tolima Colombia
| | - Kirk O. Winemiller
- Department of Wildlife and Fisheries Sciences Texas A&M University College Station Texas 77843 USA
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Perez Rocha M, Bini LM, Grönroos M, Hjort J, Lindholm M, Karjalainen SM, Tolonen KE, Heino J. Correlates of different facets and components of beta diversity in stream organisms. Oecologia 2019; 191:919-929. [PMID: 31624960 PMCID: PMC6853853 DOI: 10.1007/s00442-019-04535-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 10/10/2019] [Indexed: 11/30/2022]
Abstract
Recently, community ecology has emphasized the multi-facetted aspects of biological diversity by linking species traits and the environment. Here, we explored environmental correlates of taxonomically-based and traits-based compositional distances using a comprehensive data set of diatom and macroinvertebrate communities. We also explored the responses of different beta diversity components (i.e., overall beta diversity, turnover, and nestedness) of beta diversity facets (i.e., taxonomically and traits-based beta diversity) to environmental distances. Partial Mantel tests were used to test the relationships between beta diversity and environmental distance (while controlling for spatial distances). Taxonomically-based beta diversity varied much more than traits-based beta diversity, indicating strong functional convergence. We found that taxonomically-based beta diversity was largely driven by the turnover component. However, the nestedness component contributed more to overall traits-based beta diversity than the turnover component. Taxonomically-based beta diversity was significantly correlated with environmental distances for both diatoms and macroinvertebrates. Thus, we found support for the role of environmental filtering as a driver of community dissimilarities of rather different biological groups. However, the strength of these relationships between beta diversity and environmental distances varied depending on the biological group, facet, component, and the way which the environmental variables were selected to calculate the explanatory (distance) matrix. Our results indicated that both taxonomically and traits-based approaches are still needed to better understand patterns and mechanisms affecting the organization of biological communities in streams. This is because different facets of biological communities may be driven by different mechanisms.
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Affiliation(s)
- Mariana Perez Rocha
- Geography Research Unit, University of Oulu, PO Box 3000, 90014, Oulu, Finland.
- Freshwater Centre, Finnish Environment Institute, PO Box 413, 90014, Oulu, Finland.
- CAPES Foundation, Ministry of Education of Brazil, Brasília, 70040-020, DF, Brazil.
| | - Luis M Bini
- Department of Ecology (ICB), Universidade Federal de Goiás, Goiânia, GO, 74690-900, Brazil
| | - Mira Grönroos
- Faculty of Biological and Environmental Sciences Ecosystems and Environment Research, Niemenkatu 73, 15140, Lahti, Finland
| | - Jan Hjort
- Geography Research Unit, University of Oulu, PO Box 3000, 90014, Oulu, Finland
| | - Marja Lindholm
- Geography Research Unit, University of Oulu, PO Box 3000, 90014, Oulu, Finland
| | | | - Katri E Tolonen
- Freshwater Centre, Finnish Environment Institute, PO Box 413, 90014, Oulu, Finland
| | - Jani Heino
- Freshwater Centre, Finnish Environment Institute, PO Box 413, 90014, Oulu, Finland
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González‐Trujillo JD, Donato‐Rondon JC, Muñoz I, Sabater S. Historical processes constrain metacommunity structure by shaping different pools of invertebrate taxa within the Orinoco basin. DIVERS DISTRIB 2019. [DOI: 10.1111/ddi.12996] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Affiliation(s)
- Juan David González‐Trujillo
- Departamento de Biología Universidad Nacional de Colombia Bogotá Colombia
- Catalan Institute for Water Research (ICRA) Girona Spain
- Universitat de Girona Girona Spain
| | | | - Isabel Muñoz
- Department of Ecology University of Barcelona Barcelona Spain
| | - Sergi Sabater
- Catalan Institute for Water Research (ICRA) Girona Spain
- Universitat de Girona Girona Spain
- Faculty of Sciences Institute of Aquatic Ecology Universitat de Girona Girona Spain
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20
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Oliveira-Junior JMB, Juen L. Structuring of Dragonfly Communities (Insecta: Odonata) in Eastern Amazon: Effects of Environmental and Spatial Factors in Preserved and Altered Streams. Insects 2019; 10:E322. [PMID: 31569784 DOI: 10.3390/insects10100322] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 08/26/2019] [Accepted: 08/29/2019] [Indexed: 11/18/2022]
Abstract
The evaluation of the effects of environmental factors on natural communities has been one of the principal approaches in ecology; although, over the past decade, increasing importance has been given to spatial factors. In this context, we evaluated the relative importance of environmental and spatial factors for the structuring of the local odonate communities in preserved and altered streams. Adult Odonata were sampled in 98 streams in eastern Amazonia, Brazil. The physical features of each stream were evaluated and spatial variables were generated. Only environmental factors accounted for the variation in the Odonata community. The same pattern was observed in the suborder Zygoptera. For Anisoptera, environmental factors alone affect the variation in the community, considering all the environments together, and the altered areas on their own. As the two Odonata suborders presented distinct responses to environmental factors, this partitioning may contribute to an improvement in the precision of studies in biomonitoring. We thus suggest that studies would have a greater explanatory potential if additional variables are included, related to biotic interactions (e.g., competition). This will require further investigation on a finer scale of environmental variation to determine how the Odonata fauna of Amazonian streams behaves under this analytical perspective.
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Pajunen V, Jyrkänkallio-Mikkola J, Luoto M, Soininen J. Are drivers of microbial diatom distributions context dependent in human-impacted and pristine environments? Ecol Appl 2019; 29:e01917. [PMID: 31055866 DOI: 10.1002/eap.1917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 02/01/2019] [Accepted: 04/16/2019] [Indexed: 06/09/2023]
Abstract
Species occurrences are influenced by numerous factors whose effects may be context dependent. Thus, the magnitude of the effects and their relative importance to species distributions may vary among ecosystems due to anthropogenic stressors. To investigate context dependency in factors governing microbial bioindicators, we developed species distribution models (SDMs) for epilithic stream diatom species in human-impacted and pristine sites separately. We performed SDMs using boosted regression trees for 110 stream diatom species, which were common to both data sets, in 164 human-impacted and 164 pristine sites in Finland (covering ~1,000 km, 60° to 68° N). For each species and site group, two sets of models were conducted: climate model, comprising three climatic variables, and full model, comprising the climatic and six local environmental variables. No significant difference in model performance was found between the site groups. However, climatic variables had greater importance compared with local environmental variables in pristine sites, whereas local environmental variables had greater importance in human-impacted sites as hypothesized. Water balance and conductivity were the key variables in human-impacted sites. The relative importance of climatic and local environmental variables varied among individual species, but also between the site groups. We found a clear context dependency among the variables influencing stream diatom distributions as the most important factors varied both among species and between the site groups. In human-impacted streams, species distributions were mainly governed by water chemistry, whereas in pristine streams by climate. We suggest that climatic models may be suitable in pristine ecosystems, whereas the full models comprising both climatic and local environmental variables should be used in human-impacted ecosystems.
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Affiliation(s)
- Virpi Pajunen
- Department of Geosciences and Geography, University of Helsinki, P.O. Box 64, Helsinki, FI-00014, Finland
| | - Jenny Jyrkänkallio-Mikkola
- Department of Geosciences and Geography, University of Helsinki, P.O. Box 64, Helsinki, FI-00014, Finland
| | - Miska Luoto
- Department of Geosciences and Geography, University of Helsinki, P.O. Box 64, Helsinki, FI-00014, Finland
| | - Janne Soininen
- Department of Geosciences and Geography, University of Helsinki, P.O. Box 64, Helsinki, FI-00014, Finland
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Chen S, Zhang W, Zhang J, Jeppesen E, Liu Z, Kociolek JP, Xu X, Wang L. Local habitat heterogeneity determines the differences in benthic diatom metacommunities between different urban river types. Sci Total Environ 2019; 669:711-720. [PMID: 30893626 DOI: 10.1016/j.scitotenv.2019.03.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 02/28/2019] [Accepted: 03/03/2019] [Indexed: 06/09/2023]
Abstract
Benthic diatoms are useful indicators of the ecological state of river systems. To understand the factors determining benthic diatom metacommunity composition in urban rivers, we studied in situ surface sediment diatom communities from 23 rivers in Shanghai City. Based on our study results on the metacommunity structure of benthic diatoms and hierarchical cluster analysis (HCA), we found substantial differences between restored (G1) and unrestored rivers (G2-G4) in taxa richness, relative abundances, and dominant and indicator taxa of benthic diatoms. The epiphytic diatoms Cocconeis placentula and Amphora libyca var. baltica were representative of the restored rivers (G1), where aquatic macrophytes were more abundant and the water was clearer. The motile epipelic diatoms Navicula recens and Navicula germainii dominated the moderately polluted rivers (G2). The eutrophic taxa Cyclotella meneghiniana, Aulacoseira granulata, and Cyclostephanos tholiformis dominated in G3, which comprised relatively heavily polluted rivers with low organic matter sediment and high disturbance. The polysaprobic taxon Nitzschia palea and the halophilous taxon Fallacia pygmaea represented relatively heavily polluted rivers with a comparatively higher sedimentary salinity (SSal) (G4). Redundancy analysis (RDA) revealed that total phosphorus (TP), dissolved organic carbon (DOC), silicon dioxide (SiO2), dissolved oxygen (DO), Secchi depth (SD), SSal, and the ratio of carbon to nitrogen (C/N) in the sediment were important environmental factors explaining variation among benthic diatom metacommunity composition. Partial RDA (pRDA) implied that the relative importance of environmental factors in structuring benthic diatom metacommunity was much higher than spatial factors. Classification and regression trees (CART) further indicated that DOC, the sediment C/N ratio, and SSal were the key local environmental factors affecting grouping patterns of benthic diatom metacommunities. Our study proposes that benthic diatom metacommunities respond to the complex characteristics of local environment in urban rivers and provides useful knowledge for consideration in the ecological monitoring of urban river systems.
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Affiliation(s)
- Shan Chen
- Centre for Research on Environmental Ecology and Fish Nutrient of the Ministry of Agriculture, Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China
| | - Wei Zhang
- Centre for Research on Environmental Ecology and Fish Nutrient of the Ministry of Agriculture, Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China
| | - Jiahui Zhang
- Centre for Research on Environmental Ecology and Fish Nutrient of the Ministry of Agriculture, Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China
| | - Erik Jeppesen
- Department of Bioscience, Aarhus University, Silkeborg 8600, Denmark; Sino-Danish Centre for Education and Research (SDC), University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhaoying Liu
- Centre for Research on Environmental Ecology and Fish Nutrient of the Ministry of Agriculture, Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China
| | - J Patrick Kociolek
- Museum of Natural History and Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309, USA
| | - Xiaoying Xu
- Centre for Research on Environmental Ecology and Fish Nutrient of the Ministry of Agriculture, Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China
| | - Liqing Wang
- Centre for Research on Environmental Ecology and Fish Nutrient of the Ministry of Agriculture, Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China.
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Li Z, Wang J, Liu Z, Meng X, Heino J, Jiang X, Xiong X, Jiang X, Xie Z. Different responses of taxonomic and functional structures of stream macroinvertebrate communities to local stressors and regional factors in a subtropical biodiversity hotspot. Sci Total Environ 2019; 655:1288-1300. [PMID: 30577121 DOI: 10.1016/j.scitotenv.2018.11.222] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 11/15/2018] [Accepted: 11/15/2018] [Indexed: 06/09/2023]
Abstract
Examining the relative contribution of local environmental stressors and regional factors in structuring biological communities is essential for biodiversity conservation and environmental assessment, yet their relative roles for different community characterizations remain elusive. Here, we examined the responses of taxonomic and functional structures of stream macroinvertebrate communities to local and regional factors across a human-induced environmental gradient in the Han River Basin, one subtropical biodiversity hotspot in China. Our objectives were: 1) to examine the responses of traditional taxonomic measures and functional traits to anthropogenic disturbances; 2) to compare the relative importance of environmental versus spatial variables and catchment-scale versus reach-scale variables for the two community characterizations. We found that both species and trait compositions performed well in differentiating anthropogenic disturbances, indicating that both taxonomic and functional structures of macroinvertebrate communities were strongly altered by human activities. Particularly, some traits related to life history (e.g., voltinism), resilience and resistance (e.g., adult flying ability) are well suited for predicting changes of communities towards anthropogenic disturbances owing to their mechanistic relationship with environmental gradients. We found that environmental variables played more important roles than spatial effects in structuring both taxonomic and functional facets of macroinvertebrate communities. Environmental filtering was more important in determining functional than taxonomic structure, and the opposite was true for spatial effects. In terms of environmental variables, catchment land-uses played the primary role in determining taxonomic composition, whereas reach-scale variables related to local habitat heterogeneity were more influential for functional structure. Our study highlights the importance of employing metacommunity perspectives and different community characterizations in both theoretical and applied research. For stream bioassessment and management, we argue that the combination of taxonomic and functional characterizations of community should be implemented, as different facets of biological communities responded to different types of anthropogenic disturbances.
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Affiliation(s)
- Zhengfei Li
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Jun Wang
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Zhenyuan Liu
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xingliang Meng
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Jani Heino
- Biodiversity Centre, Finnish Environment Institute, Paavo Havaksen Tie 3, P.O. Box 413, 90014 Oulu, Finland.
| | - Xuankong Jiang
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xiong Xiong
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Xiaoming Jiang
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; State Key Laboratory of Eco-hydraulic in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, China.
| | - Zhicai Xie
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
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Abstract
Headwaters, the sources of all stream networks, provide habitats that are unique from other freshwater environments and are used by a specialised subset of aquatic species. The features of headwaters that provide special habitats include predator-free or competitor-free spaces; specific resources (particularly detrital based); and moderate variations in flows, temperature and discharge. Headwaters provide key habitats for all or some life stages for a large number of species across just about all freshwater phyla and divisions. Some features of headwaters, including isolation and small population sizes, have allowed for the evolutionary radiation of many groups of organisms within and beyond those habitats. As small and easily engineered physical spaces, headwaters are easily degraded by streambank development, ditching and even burial. Headwater streams are among the most sensitive of freshwater ecosystems due to their intimate linkage with their catchments and how easily they are impacted. As a unique ecosystem with many specialist species, headwater streams deserve better stewardship.
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25
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Pound KL, Lawrence GB, Passy SI. Beta diversity response to stress severity and heterogeneity in sensitive versus tolerant stream diatoms. DIVERS DISTRIB 2018. [DOI: 10.1111/ddi.12865] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Affiliation(s)
- Katrina L. Pound
- Department of Biology University of Texas at Arlington Arlington Texas
| | | | - Sophia I. Passy
- Department of Biology University of Texas at Arlington Arlington Texas
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26
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Pereira AS, Dâmaso-Rodrigues ML, Amorim A, Daam MA, Cerejeira MJ. Aquatic community structure in Mediterranean edge-of-field waterbodies as explained by environmental factors and the presence of pesticide mixtures. Ecotoxicology 2018; 27:661-674. [PMID: 29909542 DOI: 10.1007/s10646-018-1944-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/27/2018] [Indexed: 06/08/2023]
Abstract
Studies addressing the predicted effects of pesticides in combination with abiotic and biotic factors on aquatic biota in ditches associated with typical Mediterranean agroecosystems are scarce. The current study aimed to evaluate the predicted effects of pesticides along with environmental factors and biota interactions on macroinvertebrate, zooplankton and phytoplankton community compositions in ditches adjacent to Portuguese maize and tomato crop areas. Data was analysed with the variance partitioning procedure based on redundancy analysis (RDA). The total variance in biological community composition was divided into the variance explained by the multi-substance potentially affected fraction [(msPAF) arthropods and primary producers], environmental factors (water chemistry parameters), biotic interactions, shared variance, and unexplained variance. The total explained variance reached 39.4% and the largest proportion of this explained variance was attributed to msPAF (23.7%). When each group (phytoplankton, zooplankton and macroinvertebrates) was analysed separately, biota interactions and environmental factors explained the largest proportion of variance. Results of this study indicate that besides the presence of pesticide mixtures, environmental factors and biotic interactions also considerably influence field freshwater communities. Subsequently, to increase our understanding of the risk of pesticide mixtures on ecosystem communities in edge-of-field water bodies, variations in environmental and biological factors should also be considered.
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Affiliation(s)
- Ana Santos Pereira
- LEAF, Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, Lisbon, Portugal.
| | | | - Ana Amorim
- MARE, Marine and Environmental Sciences Centre, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - Michiel A Daam
- CENSE, Department of Environmental Sciences and Engineering, Faculty of Sciences and Technology, New University of Lisbon, Quinta da Torre, Caparica, Portugal
| | - Maria José Cerejeira
- LEAF, Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, Lisbon, Portugal
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27
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Tonkin JD, Death RG, Muotka T, Astorga A, Lytle DA. Do latitudinal gradients exist in New Zealand stream invertebrate metacommunities? PeerJ 2018; 6:e4898. [PMID: 29844999 PMCID: PMC5971837 DOI: 10.7717/peerj.4898] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 05/14/2018] [Indexed: 12/18/2022] Open
Abstract
That biodiversity declines with latitude is well known, but whether a metacommunity process is behind this gradient has received limited attention. We tested the hypothesis that dispersal limitation is progressively replaced by mass effects with increasing latitude, along with a series of related hypotheses. We explored these hypotheses by examining metacommunity structure in stream invertebrate metacommunities spanning the length of New Zealand’s two largest islands (∼1,300 km), further disentangling the role of dispersal by deconstructing assemblages into strong and weak dispersers. Given the highly dynamic nature of New Zealand streams, our alternative hypothesis was that these systems are so unpredictable (at different stages of post-flood succession) that metacommunity structure is highly context dependent from region to region. We rejected our primary hypotheses, pinning this lack of fit on the strong unpredictability of New Zealand’s dynamic stream ecosystems and fauna that has evolved to cope with these conditions. While local community structure turned over along this latitudinal gradient, metacommunity structure was highly context dependent and dispersal traits did not elucidate patterns. Moreover, the emergent metacommunity types exhibited no trends, nor did the important environmental variables. These results provide a cautionary tale for examining singular metacommunities. The considerable level of unexplained contingency suggests that any inferences drawn from one-off snapshot sampling may be misleading and further points to the need for more studies on temporal dynamics of metacommunity processes.
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Affiliation(s)
- Jonathan D Tonkin
- Department of Integrative Biology, Oregon State University, Corvallis, OR, USA
| | - Russell G Death
- Institute of Agriculture and Environment, Massey University, Palmerston North, New Zealand
| | - Timo Muotka
- Department of Ecology, University of Oulu, Oulu, Finland.,Natural Environment Centre, Finnish Environment Institute, Oulu, Finland
| | - Anna Astorga
- Institute of Ecology and Biodiversity, P. Universidad Catolica de Chile & Centro de Investigación de Ecosistemas de la Patagonia, Coyhaique, Chile
| | - David A Lytle
- Department of Integrative Biology, Oregon State University, Corvallis, OR, USA
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28
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Simião-Ferreira J, Nogueira DS, Santos AC, De Marco P, Angelini R. Multi-scale Homogenization of Caddisfly Metacomminities in Human-modified Landscapes. Environ Manage 2018; 61:687-699. [PMID: 29404739 DOI: 10.1007/s00267-017-0989-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 12/29/2017] [Indexed: 06/07/2023]
Abstract
The multiple scale of stream networks spatial organization reflects the hierarchical arrangement of streams habitats with increasingly levels of complexity from sub-catchments until entire hydrographic basins. Through these multiple spatial scales, local stream habitats form nested subsets of increasingly landscape scale and habitat size with varying contributions of both alpha and beta diversity for the regional diversity. Here, we aimed to test the relative importance of multiple nested hierarchical levels of spatial scales while determining alpha and beta diversity of caddisflies in regions with different levels of landscape degradation in a core Cerrado area in Brazil. We used quantitative environmental variables to test the hypothesis that landscape homogenization affects the contribution of alpha and beta diversity of caddisflies to regional diversity. We found that the contribution of alpha and beta diversity for gamma diversity varied according to landscape degradation. Sub-catchments with more intense agriculture had lower diversity at multiple levels, markedly alpha and beta diversities. We have also found that environmental predictors mainly associated with water quality, channel size, and habitat integrity (lower scores indicate stream degradation) were related to community dissimilarity at the catchment scale. For an effective management of the headwater biodiversity of caddisfly, towards the conservation of these catchments, heterogeneous streams with more pristine riparian vegetation found within the river basin need to be preserved in protected areas. Additionally, in the most degraded areas the restoration of riparian vegetation and size increase of protected areas will be needed to accomplish such effort.
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Affiliation(s)
- Juliana Simião-Ferreira
- Laboratório de Pesquisas Ecológicas e Educação Científica, Universidade Estadual de Goiás, BR 153 n. 3105 Fazenda Barreiro do Meio Caixa Posta 459, Anápolis, GO, 75001-970, Brazil.
| | - Denis Silva Nogueira
- Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso-IFMT, Cuiabá, MT, Brazil
| | - Anna Claudia Santos
- Laboratório de Processamento de Imagens e Geoprocessamento-LAPIG, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Paulo De Marco
- Departamento de Ecologia, Universidade Federal de Goiás-UFG, Goiânia, GO, Brazil
| | - Ronaldo Angelini
- Departamento de Engenharia Civil, Universidade Federal do Rio Grande do Norte - UFRN, Natal, RN, Brazil
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29
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Ruhí A, Datry T, Sabo JL. Interpreting beta-diversity components over time to conserve metacommunities in highly dynamic ecosystems. Conserv Biol 2017; 31:1459-1468. [PMID: 28188969 DOI: 10.1111/cobi.12906] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 01/12/2017] [Accepted: 02/03/2017] [Indexed: 06/06/2023]
Abstract
The concept of metacommunity (i.e., a set of local communities linked by dispersal) has gained great popularity among community ecologists. However, metacommunity research mostly addresses questions on spatial patterns of biodiversity at the regional scale, whereas conservation planning requires quantifying temporal variation in those metacommunities and the contributions that individual (local) sites make to regional dynamics. We propose that recent advances in diversity-partitioning methods may allow for a better understanding of metacommunity dynamics and the identification of keystone sites. We used time series of the 2 components of beta diversity (richness and replacement) and the contributions of local sites to these components to examine which sites controlled source-sink dynamics in a highly dynamic model system (an intermittent river). The relative importance of the richness and replacement components of beta diversity fluctuated over time, and sample aggregation led to underestimation of beta diversity by up to 35%. Our literature review revealed that research on intermittent rivers would benefit greatly from examination of beta-diversity components over time. Adequately appraising spatiotemporal variability in community composition and identifying sites that are pivotal for maintaining biodiversity at the landscape scale are key needs for conservation prioritization and planning. Thus, our framework may be used to guide conservation actions in highly dynamic ecosystems when time-series data describing biodiversity across sites connected by dispersal are available.
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Affiliation(s)
- Albert Ruhí
- Julie Ann Wrigley Global Institute of Sustainability, Arizona State University, Tempe, AZ, 85287-5402, U.S.A
- National Socio-Environmental Synthesis Center (SESYNC), University of Maryland, Annapolis, MD, 21401, U.S.A
| | - Thibault Datry
- IRSTEA, UR MALY, Centre de Lyon-Villeurbanne, 5 Rue de la Doua CS70077, 69626, Villeurbanne, Cedex, France
| | - John L Sabo
- Julie Ann Wrigley Global Institute of Sustainability, Arizona State University, Tempe, AZ, 85287-5402, U.S.A
- School of Life Sciences, Arizona State University, Tempe, AZ, 85287-5402, U.S.A
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30
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Affiliation(s)
- Luciano F. Sgarbi
- Programa de Pós-Graduação em Ecologia e Evolução, Inst. de Ciências Biológicas, Univ. Federal de Goiás, Goiânia; CEP 74001-970 Goiás Brazil
| | - Adriano S. Melo
- Depto de Ecologia; Inst. de Ciências Biológicas, Univ. Federal de Goiás, Goiânia; Goiás Brazil
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31
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Swan CM, Brown BL. Metacommunity theory meets restoration: isolation may mediate how ecological communities respond to stream restoration. Ecol Appl 2017; 27:2209-2219. [PMID: 28718193 DOI: 10.1002/eap.1602] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 05/13/2017] [Accepted: 05/23/2017] [Indexed: 05/24/2023]
Abstract
An often-cited benefit of river restoration is an increase in biodiversity or shift in composition to more desirable taxa. Yet, hard manipulations of habitat structure often fail to elicit a significant response in terms of biodiversity patterns. In contrast to conventional wisdom, the dispersal of organisms may have as large an influence on biodiversity patterns as environmental conditions. This influence of dispersal may be particularly influential in river networks that are linear branching, or dendritic, and thus constrain most dispersal to the river corridor. As such, some locations in river networks, such as isolated headwaters, are expected to respond less to environmental factors and less by dispersal than more well-connected downstream reaches. We applied this metacommunity framework to study how restoration drives biodiversity patterns in river networks. By comparing assemblage structure in headwater vs. more well-connected mainstem sites, we learned that headwater restoration efforts supported higher biodiversity and exhibited more stable ecological communities compared with adjacent, unrestored reaches. Such differences were not evident in mainstem reaches. Consistent with theory and mounting empirical evidence, we attribute this finding to a relatively higher influence of dispersal-driven factors on assemblage structure in more well-connected, higher order reaches. An implication of this work is that, if biodiversity is to be a goal of restoration activity, such local manipulations of habitat should elicit a more profound response in small, isolated streams than in larger downstream reaches. These results offer another significant finding supporting the notion that restoration activity cannot proceed in isolation of larger-scale, catchment-level degradation.
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Affiliation(s)
- Christopher M Swan
- Department of Geography & Environmental Systems, University of Maryland, Baltimore County, 211 Sondheim Hall, 1000 Hilltop Circle, Baltimore, Maryland, 21250, USA
- Center for Urban Environmental Research & Education, University of Maryland, Baltimore County, 211 Sondheim Hall, 1000 Hilltop Circle, Baltimore, Maryland, 21250, USA
| | - Bryan L Brown
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, 24061, USA
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32
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Collins SM, Oliver SK, Lapierre JF, Stanley EH, Jones JR, Wagner T, Soranno PA. Lake nutrient stoichiometry is less predictable than nutrient concentrations at regional and sub-continental scales. Ecol Appl 2017; 27:1529-1540. [PMID: 28370707 DOI: 10.1002/eap.1545] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 03/01/2017] [Accepted: 03/08/2017] [Indexed: 06/07/2023]
Abstract
Production in many ecosystems is co-limited by multiple elements. While a known suite of drivers associated with nutrient sources, nutrient transport, and internal processing controls concentrations of phosphorus (P) and nitrogen (N) in lakes, much less is known about whether the drivers of single nutrient concentrations can also explain spatial or temporal variation in lake N:P stoichiometry. Predicting stoichiometry might be more complex than predicting concentrations of individual elements because some drivers have similar relationships with N and P, leading to a weak relationship with their ratio. Further, the dominant controls on elemental concentrations likely vary across regions, resulting in context dependent relationships between drivers, lake nutrients and their ratios. Here, we examine whether known drivers of N and P concentrations can explain variation in N:P stoichiometry, and whether explaining variation in stoichiometry differs across regions. We examined drivers of N:P in ~2,700 lakes at a sub-continental scale and two large regions nested within the sub-continental study area that have contrasting ecological context, including differences in the dominant type of land cover (agriculture vs. forest). At the sub-continental scale, lake nutrient concentrations were correlated with nutrient loading and lake internal processing, but stoichiometry was only weakly correlated to drivers of lake nutrients. At the regional scale, drivers that explained variation in nutrients and stoichiometry differed between regions. In the Midwestern U.S. region, dominated by agricultural land use, lake depth and the percentage of row crop agriculture were strong predictors of stoichiometry because only phosphorus was related to lake depth and only nitrogen was related to the percentage of row crop agriculture. In contrast, all drivers were related to N and P in similar ways in the Northeastern U.S. region, leading to weak relationships between drivers and stoichiometry. Our results suggest ecological context mediates controls on lake nutrients and stoichiometry. Predicting stoichiometry was generally more difficult than predicting nutrient concentrations, but human activity may decouple N and P, leading to better prediction of N:P stoichiometry in regions with high anthropogenic activity.
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Affiliation(s)
- Sarah M Collins
- Department of Fisheries and Wildlife, Michigan State University, 13 Natural Resources, East Lansing, Michigan, 48824, USA
- Center for Limnology, University of Wisconsin, 680 North Park Street, Madison, Wisconsin, 53706, USA
| | - Samantha K Oliver
- Center for Limnology, University of Wisconsin, 680 North Park Street, Madison, Wisconsin, 53706, USA
| | - Jean-Francois Lapierre
- Département de Sciences Biologiques, Université de Montreal, Pavillon Marie-Victorin, CP 6128, succursale Centre-ville, Montréal, Quebec, H3C 3J7, Canada
| | - Emily H Stanley
- Center for Limnology, University of Wisconsin, 680 North Park Street, Madison, Wisconsin, 53706, USA
| | - John R Jones
- School of Natural Resources, University of Missouri, 302 Anheuser-Busch Natural Resources Building, Columbia, Missouri, 65211, USA
| | - Tyler Wagner
- U.S. Geological Survey, Pennsylvania Cooperative Fish and Wildlife Unit, The Pennsylvania State University, 402 Forest Resources Building, University Park, Pennsylvania, 16802, USA
| | - Patricia A Soranno
- Department of Fisheries and Wildlife, Michigan State University, 13 Natural Resources, East Lansing, Michigan, 48824, USA
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33
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Tornwall BM, Swan CM, Brown BL. Manipulation of local environment produces different diversity outcomes depending on location within a river network. Oecologia 2017; 184:663-74. [DOI: 10.1007/s00442-017-3891-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 05/30/2017] [Indexed: 10/19/2022]
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34
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Hill MJ, Heino J, Thornhill I, Ryves DB, Wood PJ. Effects of dispersal mode on the environmental and spatial correlates of nestedness and species turnover in pond communities. OIKOS 2017. [DOI: 10.1111/oik.04266] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Matthew J. Hill
- Inst. of Science and the Environment, Univ. of Worcester, Henwick Grove, Worcester; WR2 6AJ UK
| | - Jani Heino
- Finnish Environment Inst., Natural Environment Centre, Biodiversity; Oulu, Finland
| | | | - David B. Ryves
- Centre for Hydrological and Ecosystem Science, Dept of Geography, Loughborough Univ., Loughborough; Leicestershire UK
| | - Paul J. Wood
- Centre for Hydrological and Ecosystem Science, Dept of Geography, Loughborough Univ., Loughborough; Leicestershire UK
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35
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Rodil IF, Lucena-Moya P, Jokinen H, Ollus V, Wennhage H, Villnäs A, Norkko A. The role of dispersal mode and habitat specialization for metacommunity structure of shallow beach invertebrates. PLoS One 2017; 12:e0172160. [PMID: 28196112 PMCID: PMC5308789 DOI: 10.1371/journal.pone.0172160] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 01/31/2017] [Indexed: 11/19/2022] Open
Abstract
Metacommunity ecology recognizes the interplay between local and regional patterns in contributing to spatial variation in community structure. In aquatic systems, the relative importance of such patterns depends mainly on the potential connectivity of the specific system. Thus, connectivity is expected to increase in relation to the degree of water movement, and to depend on the specific traits of the study organism. We examined the role of environmental and spatial factors in structuring benthic communities from a highly connected shallow beach network using a metacommunity approach. Both factors contributed to a varying degree to the structure of the local communities suggesting that environmental filters and dispersal-related mechanisms played key roles in determining abundance patterns. We categorized benthic taxa according to their dispersal mode (passive vs. active) and habitat specialization (generalist vs. specialist) to understand the relative importance of environment and dispersal related processes for shallow beach metacommunities. Passive dispersers were predicted by a combination of environmental and spatial factors, whereas active dispersers were not spatially structured and responded only to local environmental factors. Generalists were predicted primarily by spatial factors, while specialists were only predicted by local environmental factors. The results suggest that the role of the spatial component in metacommunity organization is greater in open coastal waters, such as shallow beaches, compared to less-connected environmentally controlled aquatic systems. Our results also reveal a strong environmental role in structuring the benthic metacommunity of shallow beaches. Specifically, we highlight the sensitivity of shallow beach macrofauna to environmental factors related to eutrophication proxies.
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Affiliation(s)
- Iván F. Rodil
- Tvärminne Zoological Station, University of Helsinki, Hanko, Finland
- Baltic Sea Centre, Stockholm University, Stockholm, Sweden
- * E-mail:
| | | | - Henri Jokinen
- Tvärminne Zoological Station, University of Helsinki, Hanko, Finland
| | - Victoria Ollus
- Tvärminne Zoological Station, University of Helsinki, Hanko, Finland
| | - Håkan Wennhage
- Havsfiskelaboratoriet, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Anna Villnäs
- Tvärminne Zoological Station, University of Helsinki, Hanko, Finland
| | - Alf Norkko
- Tvärminne Zoological Station, University of Helsinki, Hanko, Finland
- Baltic Sea Centre, Stockholm University, Stockholm, Sweden
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36
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Heino J, Soininen J, Alahuhta J, Lappalainen J, Virtanen R. Metacommunity ecology meets biogeography: effects of geographical region, spatial dynamics and environmental filtering on community structure in aquatic organisms. Oecologia 2016; 183:121-137. [PMID: 27714463 DOI: 10.1007/s00442-016-3750-y] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 09/29/2016] [Indexed: 11/29/2022]
Abstract
Metacommunity patterns and underlying processes in aquatic organisms have typically been studied within a drainage basin. We examined variation in the composition of six freshwater organismal groups across various drainage basins in Finland. We first modelled spatial structures within each drainage basin using Moran eigenvector maps. Second, we partitioned variation in community structure among three groups of predictors using constrained ordination: (1) local environmental variables, (2) spatial variables, and (3) dummy variable drainage basin identity. Third, we examined turnover and nestedness components of multiple-site beta diversity, and tested the best fit patterns of our datasets using the "elements of metacommunity structure" analysis. Our results showed that basin identity and local environmental variables were significant predictors of community structure, whereas within-basin spatial effects were typically negligible. In half of the organismal groups (diatoms, bryophytes, zooplankton), basin identity was a slightly better predictor of community structure than local environmental variables, whereas the opposite was true for the remaining three organismal groups (insects, macrophytes, fish). Both pure basin and local environmental fractions were, however, significant after accounting for the effects of the other predictor variable sets. All organismal groups exhibited high levels of beta diversity, which was mostly attributable to the turnover component. Our results showed consistent Clementsian-type metacommunity structures, suggesting that subgroups of species responded similarly to environmental factors or drainage basin limits. We conclude that aquatic communities across large scales are mostly determined by environmental and basin effects, which leads to high beta diversity and prevalence of Clementsian community types.
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Affiliation(s)
- Jani Heino
- Natural Environment Centre, Biodiversity, Finnish Environment Institute, Paavo Havaksen Tie 3, P.O. Box 413, 90014, Oulu, Finland.
| | - Janne Soininen
- Department of Geosciences and Geography, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland
| | - Janne Alahuhta
- Geography Research Unit, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland.,Freshwater Centre, State of Surface Waters, Finnish Environment Institute, P.O. Box 413, 90014, Oulu, Finland
| | - Jyrki Lappalainen
- Department of Environmental Sciences, University of Helsinki, P.O. Box 65, 00014, Helsinki, Finland
| | - Risto Virtanen
- Department of Physiological Diversity, Helmholtz Center for Environmental Research, UFZ, Permoserstr. 15, 04318, Leipzig, Germany.,German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103, Leipzig, Germany.,Department of Ecology, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland
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Merriam ER, Petty JT. Under siege: Isolated tributaries are threatened by regionally impaired metacommunities. Sci Total Environ 2016; 560-561:170-178. [PMID: 27101452 DOI: 10.1016/j.scitotenv.2016.04.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 04/07/2016] [Accepted: 04/08/2016] [Indexed: 06/05/2023]
Abstract
Pristine streams are often targeted as conservation priorities because of their ability to preserve regional biodiversity. However, isolation within heavily degraded regions likely alters important metapopulation and metacommunity processes (e.g., rescue and mass effects), affecting the ability of in-tact communities to boost regional conditions. To test this hypothesis, we sampled invertebrate communities and physicochemical conditions from 168 streams within the mountaintop removal-valley fill mining region of West Virginia. We used redundancy analysis to first test for significant effects of local (observed physicochemical conditions) and neighborhood (streams within a 5km buffer) degradation on assemblage structure across all taxa and stress tolerance (low, moderate, high) and dispersal (low, high) categories. We then used generalized linear and hurdle models to characterize changes in community metrics and individual taxa, respectively. Local condition consistently explained the majority of variation (partial R(2) up to 5× those of neighborhood condition) in community structure and was the only factor affecting sensitive taxa. Neighborhood condition explained significant variation in moderately tolerant taxa with low dispersal capacity and highly tolerant taxa, regardless of dispersal. Decreased occurrence (Baetis) and abundance (Maccaffertium) of key taxa and corresponding metrics (%E, %EPT) suggest decreased dispersal and associated mass and rescue effects within degraded neighborhoods. Decreased neighborhood conditions also resulted in the proliferation of tolerant taxa (Chironomidae, Chimarra, Hemerodromia). Our results suggest communities within even the most pristine streams are at risk when isolated within heavily impacted regions. Consequently, protection of regional species' pools in heavily impacted regions will require more than simply conserving un-impacted streams.
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Affiliation(s)
- Eric R Merriam
- School of Natural Resources, West Virginia University, Morgantown, WV 26506-6125, USA.
| | - J Todd Petty
- School of Natural Resources, West Virginia University, Morgantown, WV 26506-6125, USA
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Luiz AM, Leão-Pires TA, Sawaya RJ. Geomorphology Drives Amphibian Beta Diversity in Atlantic Forest Lowlands of Southeastern Brazil. PLoS One 2016; 11:e0153977. [PMID: 27171522 PMCID: PMC4865194 DOI: 10.1371/journal.pone.0153977] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 04/06/2016] [Indexed: 12/03/2022] Open
Abstract
Beta diversity patterns are the outcome of multiple processes operating at different scales. Amphibian assemblages seem to be affected by contemporary climate and dispersal-based processes. However, historical processes involved in present patterns of beta diversity remain poorly understood. We assess and disentangle geomorphological, climatic and spatial drivers of amphibian beta diversity in coastal lowlands of the Atlantic Forest, southeastern Brazil. We tested the hypothesis that geomorphological factors are more important in structuring anuran beta diversity than climatic and spatial factors. We obtained species composition via field survey (N = 766 individuals), museum specimens (N = 9,730) and literature records (N = 4,763). Sampling area was divided in four spatially explicit geomorphological units, representing historical predictors. Climatic descriptors were represented by the first two axis of a Principal Component Analysis. Spatial predictors in different spatial scales were described by Moran Eigenvector Maps. Redundancy Analysis was implemented to partition the explained variation of species composition by geomorphological, climatic and spatial predictors. Moreover, spatial autocorrelation analyses were used to test neutral theory predictions. Beta diversity was spatially structured in broader scales. Shared fraction between climatic and geomorphological variables was an important predictor of species composition (13%), as well as broad scale spatial predictors (13%). However, geomorphological variables alone were the most important predictor of beta diversity (42%). Historical factors related to geomorphology must have played a crucial role in structuring amphibian beta diversity. The complex relationships between geomorphological history and climatic gradients generated by the Serra do Mar Precambrian basements were also important. We highlight the importance of combining spatially explicit historical and contemporary predictors for understanding and disentangling major drivers of beta diversity patterns.
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Affiliation(s)
- Amom Mendes Luiz
- Programa de Pós-Graduação em Ecologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), CP 6109, 3083–970, Campinas, São Paulo, Brazil
- * E-mail: (AML); (RJS)
| | - Thiago Augusto Leão-Pires
- Programa de Pós-Graduação em Ecologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), CP 6109, 3083–970, Campinas, São Paulo, Brazil
| | - Ricardo J. Sawaya
- Setor de Ecologia e Biologia Evolutiva, Universidade Federal de São Paulo (UNIFESP), 09972–270, Diadema, São Paulo, Brazil
- * E-mail: (AML); (RJS)
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Castillo-escrivà A, Rueda J, Zamora L, Hernández R, Moral MD, Mesquita-joanes F. The role of watercourse versus overland dispersal and niche effects on ostracod distribution in Mediterranean streams (eastern Iberian Peninsula). Acta Oecologica 2016; 73:1-9. [DOI: 10.1016/j.actao.2016.02.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Dümmer B, Ristau K, Traunspurger W. Varying Patterns on Varying Scales: A Metacommunity Analysis of Nematodes in European Lakes. PLoS One 2016; 11:e0151866. [PMID: 27008422 DOI: 10.1371/journal.pone.0151866] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 03/04/2016] [Indexed: 12/03/2022] Open
Abstract
Ecological community patterns are often extremely complex and the factors with the greatest influence on community structure have yet to be identified. In this study we used the elements of metacommunity structure (EMS) framework to characterize the metacommunities of freshwater nematodes in 16 European lakes at four geographical scales (radius ranging from 80 m to 360 km). The site characteristics associated with site scores indicative of the structuring gradient were identified using Spearman rank correlations. The metacommunities of the 174 nematode species included in this analysis mostly had a coherent pattern. The degree of turnover increased with increasing scale. Ordination scores correlated with geographical variables on the larger scales and with the trophic state index on a regional scale. The association of the structuring gradient with spatial variables and the scale-dependent increase in turnover showed that nematode dispersal was limited. The different metacommunity patterns identified at the increasing geographical scales suggested different, scale-related mechanisms of species distribution, with species sorting dominating on smaller and mass effects on larger geographical scales.
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Ieromina O, Peijnenburg W, Musters C, Vijver M. The effect of pesticides on the composition of aquatic macrofauna communities in field ditches. Basic Appl Ecol 2016; 17:125-33. [DOI: 10.1016/j.baae.2015.08.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Tonkin JD, Stoll S, Jähnig SC, Haase P. Elements of metacommunity structure of river and riparian assemblages: Communities, taxonomic groups and deconstructed trait groups. Ecological Complexity 2016. [DOI: 10.1016/j.ecocom.2015.12.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Rojo C, Mesquita-Joanes F, Monrós JS, Armengol J, Sasa M, Bonilla F, Rueda R, Benavent-Corai J, Piculo R, Segura MM. Hydrology Affects Environmental and Spatial Structuring of Microalgal Metacommunities in Tropical Pacific Coast Wetlands. PLoS One 2016; 11:e0149505. [PMID: 26900916 PMCID: PMC4762632 DOI: 10.1371/journal.pone.0149505] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 02/02/2016] [Indexed: 11/19/2022] Open
Abstract
The alternating climate between wet and dry periods has important effects on the hydrology and therefore on niche-based processes of water bodies in tropical areas. Additionally, assemblages of microorganism can show spatial patterns, in the form of a distance decay relationship due to their size or life form. We aimed to test spatial and environmental effects, modulated by a seasonal flooding climatic pattern, on the distribution of microalgae in 30 wetlands of a tropical dry forest region: the Pacific coast of Costa Rica and Nicaragua. Three surveys were conducted corresponding to the beginning, the highest peak, and the end of the hydrological year during the wet season, and species abundance and composition of planktonic and benthic microalgae was determined. Variation partitioning analysis (as explained by spatial distance or environmental factors) was applied to each seasonal dataset by means of partial redundancy analysis. Our results show that microalgal assemblages were structured by spatial and environmental factors depending on the hydrological period of the year. At the onset of hydroperiod and during flooding, neutral effects dominated community dynamics, but niche-based local effects resulted in more structured algal communities at the final periods of desiccating water bodies. Results suggest that climate-mediated effects on hydrology can influence the relative role of spatial and environmental factors on metacommunities of microalgae. Such variability needs to be accounted in order to describe accurately community dynamics in tropical coastal wetlands.
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Affiliation(s)
- Carmen Rojo
- Cavanilles Institute for Biodiversity and Evolutionary Biology, Universidad de Valencia, Paterna, Spain
- * E-mail:
| | - Francesc Mesquita-Joanes
- Cavanilles Institute for Biodiversity and Evolutionary Biology, Universidad de Valencia, Paterna, Spain
| | - Juan S. Monrós
- Cavanilles Institute for Biodiversity and Evolutionary Biology, Universidad de Valencia, Paterna, Spain
| | - Javier Armengol
- Cavanilles Institute for Biodiversity and Evolutionary Biology, Universidad de Valencia, Paterna, Spain
| | - Mahmood Sasa
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - Fabián Bonilla
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - Ricardo Rueda
- Departamento de Biología, Facultad de Ciencia y Tecnología, Universidad Nacional Autónoma de Nicaragua, León, Nicaragua
| | - José Benavent-Corai
- Cavanilles Institute for Biodiversity and Evolutionary Biology, Universidad de Valencia, Paterna, Spain
| | - Rubén Piculo
- Cavanilles Institute for Biodiversity and Evolutionary Biology, Universidad de Valencia, Paterna, Spain
| | - M. Matilde Segura
- Cavanilles Institute for Biodiversity and Evolutionary Biology, Universidad de Valencia, Paterna, Spain
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Affiliation(s)
- Jonathan D. Tonkin
- Dept of River Ecology and Conservation; Senckenberg Research Inst. and Natural History Museum Frankfurt; Clamecystrasse 12 DE-63571 Gelnhausen Germany
| | - Stefan Stoll
- Dept of River Ecology and Conservation; Senckenberg Research Inst. and Natural History Museum Frankfurt; Clamecystrasse 12 DE-63571 Gelnhausen Germany
| | - Sonja C. Jähnig
- Dept of Ecosystem Research; Leibniz-Inst. of Freshwater Ecology and Inland Fisheries (IGB); Müggelseedamm 301 DE-12587 Berlin Germany
| | - Peter Haase
- Dept of River Ecology and Conservation; Senckenberg Research Inst. and Natural History Museum Frankfurt; Clamecystrasse 12 DE-63571 Gelnhausen Germany
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Cauvy-Fraunié S, Espinosa R, Andino P, Jacobsen D, Dangles O. Invertebrate Metacommunity Structure and Dynamics in an Andean Glacial Stream Network Facing Climate Change. PLoS One 2015; 10:e0136793. [PMID: 26308853 PMCID: PMC4550352 DOI: 10.1371/journal.pone.0136793] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 08/08/2015] [Indexed: 12/03/2022] Open
Abstract
Under the ongoing climate change, understanding the mechanisms structuring the spatial distribution of aquatic species in glacial stream networks is of critical importance to predict the response of aquatic biodiversity in the face of glacier melting. In this study, we propose to use metacommunity theory as a conceptual framework to better understand how river network structure influences the spatial organization of aquatic communities in glacierized catchments. At 51 stream sites in an Andean glacierized catchment (Ecuador), we sampled benthic macroinvertebrates, measured physico-chemical and food resource conditions, and calculated geographical, altitudinal and glaciality distances among all sites. Using partial redundancy analysis, we partitioned community variation to evaluate the relative strength of environmental conditions (e.g., glaciality, food resource) vs. spatial processes (e.g., overland, watercourse, and downstream directional dispersal) in organizing the aquatic metacommunity. Results revealed that both environmental and spatial variables significantly explained community variation among sites. Among all environmental variables, the glacial influence component best explained community variation. Overland spatial variables based on geographical and altitudinal distances significantly affected community variation. Watercourse spatial variables based on glaciality distances had a unique significant effect on community variation. Within alpine catchment, glacial meltwater affects macroinvertebrate metacommunity structure in many ways. Indeed, the harsh environmental conditions characterizing glacial influence not only constitute the primary environmental filter but also, limit water-borne macroinvertebrate dispersal. Therefore, glacier runoff acts as an aquatic dispersal barrier, isolating species in headwater streams, and preventing non-adapted species to colonize throughout the entire stream network. Under a scenario of glacier runoff decrease, we expect a reduction in both environmental filtering and dispersal limitation, inducing a taxonomic homogenization of the aquatic fauna in glacierized catchments as well as the extinction of specialized species in headwater groundwater and glacier-fed streams, and consequently an irreversible reduction in regional diversity.
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Affiliation(s)
- Sophie Cauvy-Fraunié
- IRD, Institut de Recherche pour le Développement, UMR EGCE, IRD-247 CNRS-UP Sud-9191, 91198 Gif-sur-Yvette cedex, France
- Pontificia Universidad Católica del Ecuador, Facultad de Ciencias Exactas y Naturales, Quito, Ecuador
- Instituto de Ecología, Universidad Mayor San Andrés, Cotacota, La Paz, Bolivia
- * E-mail:
| | - Rodrigo Espinosa
- Pontificia Universidad Católica del Ecuador, Facultad de Ciencias Exactas y Naturales, Quito, Ecuador
| | - Patricio Andino
- Pontificia Universidad Católica del Ecuador, Facultad de Ciencias Exactas y Naturales, Quito, Ecuador
| | - Dean Jacobsen
- Pontificia Universidad Católica del Ecuador, Facultad de Ciencias Exactas y Naturales, Quito, Ecuador
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 2100 Copenhagen, Denmark
| | - Olivier Dangles
- IRD, Institut de Recherche pour le Développement, UMR EGCE, IRD-247 CNRS-UP Sud-9191, 91198 Gif-sur-Yvette cedex, France
- Pontificia Universidad Católica del Ecuador, Facultad de Ciencias Exactas y Naturales, Quito, Ecuador
- Instituto de Ecología, Universidad Mayor San Andrés, Cotacota, La Paz, Bolivia
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Tonkin JD, Sundermann A, Jähnig SC, Haase P. Environmental Controls on River Assemblages at the Regional Scale: An Application of the Elements of Metacommunity Structure Framework. PLoS One 2015; 10:e0135450. [PMID: 26270550 PMCID: PMC4536219 DOI: 10.1371/journal.pone.0135450] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 07/22/2015] [Indexed: 11/18/2022] Open
Abstract
Understanding factors that structure regional biodiversity is important for linking ecological and biogeographic processes. Our objective was to explore regional patterns in riverine benthic invertebrate assemblages in relation to their broad positioning along the river network and examine differences in composition, biodiversity (alpha and beta diversity), and environmental drivers. We up-scaled methods used to examine patterns in metacommunity structure (Elements of Metacommunity Structure framework) to examine faunal distribution patterns at the regional extent for 168 low-mountain stream invertebrate assemblages in central Germany. We then identified the most influential environmental factors using boosted regression trees. Faunal composition patterns were compartmentalised (Clementsian or quasi-Clementsian), with little difference from headwaters to large rivers, potentially reflecting the regional scale of the study, by crossing major catchment boundaries and incorporating different species pools. While idealised structures did not vary, environmental drivers of composition varied considerably between river sections and with alpha diversity. Prediction was substantially weaker, and the importance of space was greater, in large rivers compared to other sections suggesting a weakening in species sorting downstream. Further, there was a stronger transition in composition than for alpha diversity downstream. The stronger links with regional faunal composition than with richness further emphasises the importance of considering the alternative ways in which anthropogenic stressors are operating to affect biodiversity patterns. Our approach allowed bridging the gap between local (or metacommunity) and regional scales, providing key insights into drivers of regional biodiversity patterns.
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Affiliation(s)
- Jonathan D. Tonkin
- Department of River Ecology and Conservation, Senckenberg Research Institute and Natural History Museum Frankfurt, D-63571 Gelnhausen, Germany
- * E-mail:
| | - Andrea Sundermann
- Department of River Ecology and Conservation, Senckenberg Research Institute and Natural History Museum Frankfurt, D-63571 Gelnhausen, Germany
| | - Sonja C. Jähnig
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Department of Ecosystem Research, 12587 Berlin, Germany
| | - Peter Haase
- Department of River Ecology and Conservation, Senckenberg Research Institute and Natural History Museum Frankfurt, D-63571 Gelnhausen, Germany
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Morán-Ordóñez A, Pavlova A, Pinder AM, Sim L, Sunnucks P, Thompson RM, Davis J. Aquatic communities in arid landscapes: local conditions, dispersal traits and landscape configuration determine local biodiversity. DIVERS DISTRIB 2015. [DOI: 10.1111/ddi.12342] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Alejandra Morán-Ordóñez
- School of Biological Sciences; Monash University; Clayton 3800 Vic. Australia
- NERP Environmental Decisions Hub; School of BioSciences (building 2); The University of Melbourne; Parkville 3010 Vic. Australia
| | - Alexandra Pavlova
- School of Biological Sciences; Monash University; Clayton 3800 Vic. Australia
| | - Adrian M. Pinder
- Science and Conservation Division; Department of Parks and Wildlife; Kensington 6151 WA Australia
| | - Lien Sim
- School of Biological Sciences; Monash University; Clayton 3800 Vic. Australia
- Science and Conservation Division; Department of Parks and Wildlife; Kensington 6151 WA Australia
| | - Paul Sunnucks
- School of Biological Sciences; Monash University; Clayton 3800 Vic. Australia
| | - Ross M. Thompson
- School of Biological Sciences; Monash University; Clayton 3800 Vic. Australia
- Institute for Applied Ecology; University of Canberra; Canberra 2617 ACT Australia
| | - Jenny Davis
- Institute for Applied Ecology; University of Canberra; Canberra 2617 ACT Australia
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Heino J, Soininen J, Alahuhta J, Lappalainen J, Virtanen R. A comparative analysis of metacommunity types in the freshwater realm. Ecol Evol 2015; 5:1525-37. [PMID: 25897391 PMCID: PMC4395181 DOI: 10.1002/ece3.1460] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 02/16/2015] [Indexed: 11/16/2022] Open
Abstract
Most metacommunity studies have taken a direct mechanistic approach, aiming to model the effects of local and regional processes on local communities within a metacommunity. An alternative approach is to focus on emergent patterns at the metacommunity level through applying the elements of metacommunity structure (EMS; Oikos, 97, 2002, 237) analysis. The EMS approach has very rarely been applied in the context of a comparative analysis of metacommunity types of main microbial, plant, and animal groups. Furthermore, to our knowledge, no study has associated metacommunity types with their potential ecological correlates in the freshwater realm. We assembled data for 45 freshwater metacommunities, incorporating biologically highly disparate organismal groups (i.e., bacteria, algae, macrophytes, invertebrates, and fish). We first examined ecological correlates (e.g., matrix properties, beta diversity, and average characteristics of a metacommunity, including body size, trophic group, ecosystem type, life form, and dispersal mode) of the three elements of metacommunity structure (i.e., coherence, turnover, and boundary clumping). Second, based on those three elements, we determined which metacommunity types prevailed in freshwater systems and which ecological correlates best discriminated among the observed metacommunity types. We found that the three elements of metacommunity structure were not strongly related to the ecological correlates, except that turnover was positively related to beta diversity. We observed six metacommunity types. The most common were Clementsian and quasi-nested metacommunity types, whereas Random, quasi-Clementsian, Gleasonian, and quasi-Gleasonian types were less common. These six metacommunity types were best discriminated by beta diversity and the first axis of metacommunity ecological traits, ranging from metacommunities of producer organisms occurring in streams to those of large predatory organisms occurring in lakes. Our results showed that focusing on the emergent properties of multiple metacommunities provides information additional to that obtained in studies examining variation in local community structure within a metacommunity.
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Affiliation(s)
- Jani Heino
- Biodiversity, Finnish Environment Institute, Natural Environment Centre P.O. Box 413, FI-90014, Oulu, Finland
| | - Janne Soininen
- Department of Geosciences and Geography, University of Helsinki P.O. Box 64, FI-00014, Helsinki, Finland
| | - Janne Alahuhta
- Department of Geography, University of Oulu P.O. Box 3000, FI-90014, Oulu, Finland ; Finnish Environment Institute, Freshwater Centre, State of Surface Waters P.O. Box 413, FI-90014, Oulu, Finland
| | - Jyrki Lappalainen
- Department of Environmental Sciences, University of Helsinki P.O. Box 65, FI-00014, Helsinki, Finland
| | - Risto Virtanen
- Department of Biology, University of Oulu, Botanical Museum P.O. Box 3000, FI-90014, Oulu, Finland
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Yamada K, Tanaka Y, Era T, Nakaoka M. Environmental and spatial controls of macroinvertebrate functional assemblages in seagrass ecosystems along the Pacific coast of northern Japan. Glob Ecol Conserv 2014; 2:47-61. [DOI: 10.1016/j.gecco.2014.08.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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