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Reyes-Ortiz M, Lira-Noriega A, Osorio-Olvera L, Luna-Vega I, Williams-Linera G. Leaf functional traits and ecological niche of Fagus grandifolia and Oreomunnea mexicana in natural forests and plantings as a proxy of climate change. AMERICAN JOURNAL OF BOTANY 2024; 111:e16322. [PMID: 38641895 DOI: 10.1002/ajb2.16322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/16/2024] [Accepted: 02/16/2024] [Indexed: 04/21/2024]
Abstract
PREMISE Functional traits reflect species' responses to environmental variation and the breadth of their ecological niches. Fagus grandifolia and Oreomunnea mexicana have restricted distribution in upper montane cloud forests (1700-2000 m a.s.l.) in Mexico. These species were introduced into plantings at lower elevations (1200-1600 m a.s.l.) that have climates predicted for montane forests in 2050 and 2070. The aim was to relate morphological leaf traits to the ecological niche structure of each species. METHODS Leaf functional traits (leaf area, specific leaf area [SLA], thickness, and toughness) were analyzed in forests and plantings. Atmospheric circulation models and representative concentration pathways (RCPs: 2.6, 4.5, 8.5) were used to assess future climate conditions. Trait-niche relationships were analyzed by measuring the Mahalanobis distance (MD) from the forests and the plantings to the ecological niche centroid (ENC). RESULTS For both species, leaf area and SLA were higher and toughness lower in plantings at lower elevation relative to those in higher-elevation forests, and thickness was similar. Leaf traits varied with distance from sites to the ENC. Forests and plantings have different environmental locations regarding the ENC, but forests are closer (MD 0.34-0.58) than plantings (MD 0.50-0.70) for both species. CONCLUSIONS Elevation as a proxy for expected future climate conditions influenced the functional traits of both species, and trait patterns related to the structure of their ecological niches were consistent. The use of distances to the ENC is a promising approach to explore variability in species' functional traits and phenotypic responses in optimal versus marginal environmental conditions.
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Affiliation(s)
- Miriam Reyes-Ortiz
- Red de Ecología Funcional, Instituto de Ecología, A.C., Carretera antigua a Coatepec No. 351, Xalapa, 91073, Veracruz, Mexico
- Departamento de Saúde Coletiva, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Rua Tessália Vieira de Camargo, 126 - Cidade Universitária Zeferino Vaz CEP 13083-887, Campinas, SP, Brazil
| | - Andrés Lira-Noriega
- Instituto de Ecología, A.C., Red de Estudios Moleculares Avanzados, Xalapa, 91073, Veracruz, Mexico
| | - Luis Osorio-Olvera
- Departamento de Ecología de la Biodiversidad, Instituto de Ecología, UNAM, Laboratorio de Ecoinformática de la Biodiversidad, Ciudad de México, Mexico
| | - Isolda Luna-Vega
- Departamento de Biología Evolutiva, Facultad de Ciencias, UNAM, Laboratorio de Biogeografía y Sistemática, Ciudad de México, Mexico
| | - Guadalupe Williams-Linera
- Red de Ecología Funcional, Instituto de Ecología, A.C., Carretera antigua a Coatepec No. 351, Xalapa, 91073, Veracruz, Mexico
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Ohore OE, Zhang J, Ifon BE, Kumwimba MN, Mu X, Kuang D, Wang Z, Gu JD, Yang G. Microbial phylogenetic divergence between surface-water and sedimentary ecosystems drove the resistome profiles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 915:170122. [PMID: 38232840 DOI: 10.1016/j.scitotenv.2024.170122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/19/2024]
Abstract
Antibiotic pollution and the evolution of antibiotic resistance genes (ARGs) are increasingly viewed as major threats to both ecosystem security and human health, and have drawn attention. This study investigated the fate of antibiotics in aqueous and sedimentary substrates and the impact of ecosystem shifts between water and sedimentary phases on resistome profiles. The findings indicated notable variations in the concentration and distribution patterns of antibiotics across various environmental phases. Based on the partition coefficient (Kd), the total antibiotic concentration was significantly greater in the surface water (1405.45 ng/L; 49.5 %) compared to the suspended particulate matter (Kd = 0.64; 892.59 ng/g; 31.4 %) and sediment (Kd = 0.4; 542.64 ng/g; 19.1 %). However, the relative abundance of ARGs in surface water and sediment was disproportionate to the abundance of antibiotics concentration, and sediments were the predominant ARGs reservoirs. Phylogenetic divergence of the microbial communities between the surface water and the sedimentary ecosystems potentially played important roles in driving the ARGs profiles between the two distinctive ecosystems. ARGs of Clinical importance; including blaGES, MCR-7.1, ermB, tet(34), tet36, tetG-01, and sul2 were significantly increased in the surface water, while blaCTX-M-01, blaTEM, blaOXA10-01, blaVIM, tet(W/N/W), tetM02, and ermX were amplified in the sediments. cfxA was an endemic ARG in surface-water ecosystems while the endemic ARGs of the sedimentary ecosystems included aacC4, aadA9-02, blaCTX-M-04, blaIMP-01, blaIMP-02, bla-L1, penA, erm(36), ermC, ermT-01, msrA-01, pikR2, vgb-01, mexA, oprD, ttgB, and aac. These findings offer a valuable information for the identification of ARGs-specific high-risk reservoirs.
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Affiliation(s)
- Okugbe Ebiotubo Ohore
- Key Laboratory of Tropical Diseases Control, National Health Commission, Key Laboratory of Tropical Translational Medicine of Ministry of Education, School of Tropical Medicine, Hainan Medical University, Haikou, Hainan 571199, China.
| | - Jingli Zhang
- Department of Clinical Medicine, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Binessi Edouard Ifon
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China; Laboratory of Physical Chemistry, University of Abomey-Calavi, Cotonou 01 BP 4521, Benin
| | - Mathieu Nsenga Kumwimba
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Xiaoying Mu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Dai Kuang
- Key Laboratory of Tropical Diseases Control, National Health Commission, Key Laboratory of Tropical Translational Medicine of Ministry of Education, School of Tropical Medicine, Hainan Medical University, Haikou, Hainan 571199, China
| | - Zhen Wang
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Ji-Dong Gu
- Environmental Science and Engineering Program, Guangdong Technion - Israel Institute of Technology, 241 Daxue Road, Jinping District, Shantou, Guangdong 515063, China; Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion, Guangdong Technion - Israel Institute of Technology, 241 Daxue Road, Jinping District, Shantou, Guangdong 515063, China
| | - Guojing Yang
- Key Laboratory of Tropical Diseases Control, National Health Commission, Key Laboratory of Tropical Translational Medicine of Ministry of Education, School of Tropical Medicine, Hainan Medical University, Haikou, Hainan 571199, China; The First Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China.
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Wang X, Peng P, Bai M, Bai W, Zhang S, Feng Y, Wang J, Tang Y. Impacts of physiological characteristics and human activities on the species distribution models of orchids taking the Hengduan Mountains as a case. Ecol Evol 2023; 13:e10566. [PMID: 37791293 PMCID: PMC10542477 DOI: 10.1002/ece3.10566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 09/06/2023] [Accepted: 09/14/2023] [Indexed: 10/05/2023] Open
Abstract
The biogeography research of orchids through species distribution models (SDMs), a vital tool in the biogeography field, is critical to understanding the fundamental geographic distribution patterns and identifying conservation priorities. The correspondence between species occurrence and environmental information is crucial to the model's performance. However, ecological preferences unique to different orchid species, such as their life forms, are often overlooked during the modeling process. This oversight can introduce bias and increase model uncertainty. Additionally, human activities, as an important potential predictor, have not been quantified in any orchid SDMs. Taking the Hengduan Mountains as an example, we preprocessed all orchid species' occurrences based on physiological characteristics. Choosing five spatial factors related to human activities to quantify the interference and enter into models as HI factor. Using different modeling methods (GLM, MaxEnt, and RF) and evaluation indices (AUC, TSS, and Kappa), diverse modeling strategies have been constructed in the study. A double-ranking method has been adopted to select the critical orchid distribution regions. The results showed that classification models based on physiological characteristics significantly improved the model's accuracy while adding the HI factor had the same effect but the absence of enough significance. Suitability maps indicated that highly heterogeneous mountainous areas were vital for the distribution of orchids in the Hengduan Mountains. Different distribution patterns and critical regions existed between various orchid life forms geographically - terrestrial orchids were dominant in the mountain, and mycoherterophical orchids were primarily located in the north, more influenced by vegetation and temperature. Critical regions of epiphytic orchids were in the south due to a greater dependence on precipitation and temperature. These studies are informative for understanding the orchids' geographic distribution patterns in the Hengduan Mountains, promoting conservation and providing references for similar research beyond orchids.
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Affiliation(s)
- Xue‐Man Wang
- College of Earth SciencesChengdu University of TechnologyChengduChina
| | - Pei‐Hao Peng
- College of Earth SciencesChengdu University of TechnologyChengduChina
| | - Mao‐Yang Bai
- College of Earth SciencesChengdu University of TechnologyChengduChina
| | - Wen‐Qian Bai
- College of Earth SciencesChengdu University of TechnologyChengduChina
| | - Shi‐Qi Zhang
- College of Earth SciencesChengdu University of TechnologyChengduChina
| | - Yu Feng
- College of Earth SciencesChengdu University of TechnologyChengduChina
| | - Juan Wang
- College of Tourism and Urban‐rural PlanningChengdu University of TechnologyChengduChina
| | - Ying Tang
- College of Tourism and Urban‐rural PlanningChengdu University of TechnologyChengduChina
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Ohore OE, Ifon BE, Wang Y, Kazmi SSUH, Zhang J, Sanganyado E, Jiao X, Liu W, Wang Z. Vertical changes in water depth and environmental variables drove the antibiotics and antibiotic resistomes distribution, and microbial food web structures in the estuary and marine ecosystems. ENVIRONMENT INTERNATIONAL 2023; 178:108118. [PMID: 37517178 DOI: 10.1016/j.envint.2023.108118] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 06/29/2023] [Accepted: 07/25/2023] [Indexed: 08/01/2023]
Abstract
The influence of vertical changes in water depth on emerging pollutants distribution and microbial food web remains elusive. We investigated the influence of vertical transition in water depth on the environmental variables, antibiotics and antibiotic resistomes, and microbial community structures in estuary and marine ecosystems (0-50 m). Stepwise multiple linear regression model showed that among investigated environmental variables, change in water salinity was the most influential factor dictating the fluoroquinolone and macrolides concentrations, while dissolved oxygen and turbidity were the key influencers of sulfonamides and beta-lactam concentrations, respectively. Bacterial and eukaryotic diversity and niche breadth significantly increased with the increasing water depth. Ecosystem food web structure at the bottom depths was more stable than at the middle and surface depths. At the surface depth, the top 5 keystone genera were Cryothecomonas, Syndiniales, Achromobacter, Pseudopirsonia, and Karlodinium. Whereas Eugregarinorida, Neptuniibacter, Mychonastes, Novel_Apicomplexa_Class_1, Aplanochytrium and Dietzia, Halodaphnea, Luminiphilus, Aplanochytrium, Maullinia dominated the top 5 genera at the middle and the bottom depth, respectively. Absolute abundance of antibiotic resistance genes (ARGs) was drastically increased at the surface depth compared with the middle and bottom depths. Abundance of the top 10 ARGs and mobile genetic elements (MGEs) detected including tnpA-05, aadA2-03, mexF, aadA1, intI-1(clinic), qacEdelta1-02, aadA-02, qacEdelta1-01, cmlA1-01, and aadA-01 were amplified at the surface depth. This study demonstrated that ARGs abundance was disproportionate to bacterial diversity, and anthropogenic disturbances, confinement, MGEs, and ecosystem stability play primary roles in the fate of ARGs. The findings of this study also implicate that vertical changes in the water depth on environmental conditions can influence antibiotic concentrations and microbial community dramatically.
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Affiliation(s)
- Okugbe Ebiotubo Ohore
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Binessi Edouard Ifon
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Laboratory of Physical Chemistry, University of Abomey-Calavi, Republic of Benin, Cotonou 01 BP 4521, Benin
| | - Yuwen Wang
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Syed Shabi Ul Hassan Kazmi
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Jingli Zhang
- Department of Clinical Medicine, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Edmond Sanganyado
- Department of Applied Sciences, Northumbria University, Newcastle Upon Tyne NE2 4PB, UK
| | - Xiaoyang Jiao
- Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Wenhua Liu
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Zhen Wang
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China.
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Fernández M, Kaur J, Sharma J. Co-occurring epiphytic orchids have specialized mycorrhizal fungal niches that are also linked to ontogeny. MYCORRHIZA 2023; 33:87-105. [PMID: 36651985 DOI: 10.1007/s00572-022-01099-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
Mycorrhizal symbiosis has been related to the coexistence and community assembly of coexisting orchids in few studies despite their obligate dependence on mycorrhizal partners to establish and survive. In hyper-diverse environments like tropical rain forests, coexistence of epiphytic orchids may be facilitated through mycorrhizal fungal specialization (i.e., sets of unique and dominant mycorrhizal fungi associated with a particular host species). However, information on the role of orchid mycorrhizal fungi (OMF) in niche differentiation and coexistence of epiphytic orchids is still scarce. In this study, we sought to identify the variation in fungal preferences of four co-occurring epiphytic orchids in a tropical rainforest in Costa Rica by addressing the identity and composition of their endophytic fungal and OMF communities across species and life stages. We show that the endophytic fungal communities are formed mainly of previously recognized OMF taxa, and that the four coexisting orchid species have both a set of shared mycorrhizal fungi and a group of fungi unique to an orchid species. We also found that adult plants keep the OMF of the juvenile stage while adding new mycobionts over time. This study provides evidence for the utilization of specific OMF that may be involved in niche segregation, and for an aggregation mechanism where adult orchids keep initial fungal mycobionts of the juvenile stage while adding others.
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Affiliation(s)
- Melania Fernández
- Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA.
- Lankester Botanical Garden, University of Costa Rica, Cartago, 30109, Costa Rica.
- Herbarium UCH, Universidad Autónoma de Chiriquí, David, Chiriquí, Panama.
| | - Jaspreet Kaur
- Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA
| | - Jyotsna Sharma
- Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA
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Doležal J, Korznikov K, Altman J, Fibich P, Řeháková K, Lltonga EN, Majeský L, Dančák M. Ecological niches of epiphyllous bryophytes along Afrotropical elevation gradient. OIKOS 2023. [DOI: 10.1111/oik.09772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jiří Doležal
- Inst. of Botany, The Czech Academy of Sciences Třeboň Czech Republic
- Dept of Botany, Faculty of Science, Univ. of South Bohemia České Budějovice Czech Republic
| | - Kirill Korznikov
- Inst. of Botany, The Czech Academy of Sciences Třeboň Czech Republic
| | - Jan Altman
- Inst. of Botany, The Czech Academy of Sciences Třeboň Czech Republic
- Faculty of Forestry and Wood Sciences, Czech Univ. of Life Sciences Prague, Prague 6 Suchdol Czech Republic
| | - Pavel Fibich
- Inst. of Botany, The Czech Academy of Sciences Třeboň Czech Republic
- Dept of Botany, Faculty of Science, Univ. of South Bohemia České Budějovice Czech Republic
| | - Klára Řeháková
- Inst. of Botany, The Czech Academy of Sciences Třeboň Czech Republic
| | | | - Luboš Majeský
- Dept of Botany, Faculty of Science, Palacký Univ. Olomouc Olomouc‐Holice Czech Republic
| | - Martin Dančák
- Dept of Ecology and Environmental Sciences, Faculty of Science, Palacký Univ. Olomouc Olomouc‐Holice Czech Republic
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Olszewski P, Puchałka R, Sewerniak P, Koprowski M, Ulrich W. Does intraspecific trait variability affect understorey plant community assembly? ACTA OECOLOGICA 2022. [DOI: 10.1016/j.actao.2022.103863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Hájek M, Těšitel J, Tahvanainen T, Peterka T, Jiménez-Alfaro B, Jansen F, Pérez-Haase A, Garbolino E, Carbognani M, Kolari THM, Hájková P, Jandt U, Aunina L, Pawlikowski P, Ivchenko T, Tomaselli M, Tichý L, Dítě D, Plesková Z, Mikulášková E. Rising temperature modulates pH niches of fen species. GLOBAL CHANGE BIOLOGY 2022; 28:1023-1037. [PMID: 34748262 DOI: 10.1111/gcb.15980] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 10/26/2021] [Accepted: 10/29/2021] [Indexed: 06/13/2023]
Abstract
Rising temperatures may endanger fragile ecosystems because their character and key species show different habitat affinities under different climates. This assumption has only been tested in limited geographical scales. In fens, one of the most endangered ecosystems in Europe, broader pH niches have been reported from cold areas and are expected for colder past periods. We used the largest European-scale vegetation database from fens to test the hypothesis that pH interacts with macroclimate temperature in forming realized niches of fen moss and vascular plant species. We calibrated the data set (29,885 plots after heterogeneity-constrained resampling) with temperature, using two macroclimate variables, and with the adjusted pH, a variable combining pH and calcium richness. We modelled temperature, pH and water level niches for one hundred species best characterizing European fens using generalized additive models and tested the interaction between pH and temperature. Fifty-five fen species showed a statistically significant interaction between pH and temperature (adj p ˂ .01). Forty-six of them (84%) showed a positive interaction manifested by a shift or restriction of their niche to higher pH in warmer locations. Nine vascular plants and no moss showed the opposite interaction. Mosses showed significantly greater interaction. We conclude that climate significantly modulates edaphic niches of fen plants, especially bryophytes. This result explains previously reported regional changes in realized pH niches, a current habitat-dependent decline of endangered taxa, and distribution changes in the past. A warmer climate makes growing seasons longer and warmer, increases productivity, and may lower the water level. These effects prolong the duration and intensity of interspecific competition, support highly competitive Sphagnum mosses, and, as such, force niches of specialized fen species towards narrower high-pH ranges. Recent anthropogenic landscape changes pose a severe threat to many fen species and call for mitigation measures to lower competition pressure in their refugia.
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Affiliation(s)
- Michal Hájek
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jakub Těšitel
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Teemu Tahvanainen
- Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland
| | - Tomáš Peterka
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Borja Jiménez-Alfaro
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
- Research Unit of Biodiversity (CSIC/UO/PA), University of Oviedo, Mieres, Spain
| | - Florian Jansen
- Faculty of Agricultural and Environmental Sciences, Rostock University, Rostock, Germany
| | - Aaron Pérez-Haase
- Department of Biosciences, Faculty of Science and Technology, University of Vic-Central University of Catalonia, Barcelona, Spain
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, Biodiversity Research Institute (IRBio), University of Barcelona, Barcelona, Spain
| | - Emmanuel Garbolino
- Climpact Data Science, Nova Sophia - Regus Nova, Sophia Antipolis Cedex, France
| | - Michele Carbognani
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Tiina H M Kolari
- Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland
| | - Petra Hájková
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
- Department of Paleoecology, Institute of Botany, The Czech Academy of Sciences, Brno, Czech Republic
| | - Ute Jandt
- Geobotany & Botanical Garden, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | - Liene Aunina
- Laboratory of Geobotany, Institute of Biology of the University of Latvia, Rīga, Latvia
| | - Paweł Pawlikowski
- Department of Ecology and Environmental Conservation, Institute of Environmental Biology, University of Warsaw, Warsaw, Poland
| | - Tatiana Ivchenko
- Laboratory of General Geobotany, Komarov Botanical Institute R.A.S. St.-Petersburg, Russia
| | - Marcello Tomaselli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Lubomír Tichý
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Daniel Dítě
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
- Plant Science and Biodiversity Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Zuzana Plesková
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Eva Mikulášková
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
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Temperature and soils predict the distribution of plant species along the Himalayan elevational gradient. JOURNAL OF TROPICAL ECOLOGY 2021. [DOI: 10.1017/s026646742100050x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractTropical montane systems are characterized by a high plant species diversity and complex environmental gradients. Climate warming may force species to track suitable climatic conditions and shift their distribution upward, which may be particularly problematic for species with narrow elevational ranges. To better understand the fate of montane plant species in the face of climate change, we evaluated a) which environmental factors best predict the distribution of 277 plant species along the Himalayan elevational gradient in Nepal, and b) whether species elevational ranges increase with increasing elevation. To this end, we developed ecological niche models using MaxEnt by combining species survey and presence data with 19 environmental predictors. Key environmental factors that best predicted the distribution of Himalayan plant species were mean annual temperature (for 54.5% of the species) followed by soil clay content (10.2%) and slope (9.4%). Although temperature is the best predictor, it is associated with many other covariates that may explain species distribution, such as irradiance and potential evapotranspiration. Species at both ends of the Himalayan elevational gradient had narrower elevational ranges than species in the middle. Our results suggest that with further global warming, most Himalayan plant species have to migrate upward, which is especially critical for upland species with narrow distribution ranges.
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Cheng H, Gong Y, Zuo X. Precipitation Variability Affects Aboveground Biomass Directly and Indirectly via Plant Functional Traits in the Desert Steppe of Inner Mongolia, Northern China. FRONTIERS IN PLANT SCIENCE 2021; 12:674527. [PMID: 34456934 PMCID: PMC8385370 DOI: 10.3389/fpls.2021.674527] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 06/07/2021] [Indexed: 05/27/2023]
Abstract
Clarifying the response of community and dominance species to climate change is crucial for disentangling the mechanism of the ecosystem evolution and predicting the prospective dynamics of communities under the global climate scenario. We examined how precipitation changes affect community structure and aboveground biomass (AGB) according to manipulated precipitation experiments in the desert steppe of Inner Mongolia, China. Bayesian model and structural equation models (SEM) were used to test variation and causal relationship among precipitation, plant diversity, functional attributes, and AGB. The results showed that the responses of species richness, evenness, and plant community weighted means traits to precipitation changes in amount and year were significant. The SEM demonstrated that precipitation change in amount and year has a direct effect on richness, evenness, and community-weighted mean (CWM) for height, leaf area (LA), specific leaf area (SLA), leaf dry matter content (LDMC), leaf nitrogen content (LNC), and leaf carbon content (LCC) and AGB; there into CWM for height and LDMC had a direct positive effect on AGB; LA had a direct negative effect on AGB. Three dominant species showed diverse adaptation and resource utilization strategies in response to precipitation changes. A. polyrhizum showed an increase in height under the precipitation treatments that promoted AGB, whereas the AGB of P. harmala and S. glareosa was boosted through alterations in height and LA. Our results highlight the asynchronism of variation in community composition and structure, leaf functional traits in precipitation-AGB relationship. We proposed that altered AGB resulted from the direct and indirect effects of plant functional traits (plant height, LA, LDMC) rather than species diversity, plant functional traits are likely candidate traits, given that they are mechanistically linked to precipitation changes and affected aboveground biomass in a desert steppe.
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Affiliation(s)
- Huan Cheng
- College of Forestry, Sichuan Agricultural University, Chengdu, China
- Department of Biology, University of Maryland, College Park, MD, United States
| | - Yuanbo Gong
- College of Forestry, Sichuan Agricultural University, Chengdu, China
| | - Xiaoan Zuo
- Urat Desert-Grassland Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou, China
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Rather ZA, Ahmad R, Dar AR, Dar TUH, Khuroo AA. Predicting shifts in distribution range and niche breadth of plant species in contrasting arid environments under climate change. ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 193:427. [PMID: 34143311 DOI: 10.1007/s10661-021-09160-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 05/26/2021] [Indexed: 06/12/2023]
Abstract
Arid environments face extreme risk from contemporary climate change; therefore, predicting the shifts in species distribution range and niche breadth in these environments assumes urgent research priority. Here we report the potential distribution and predict future distribution range of two model plant species typically representing contrasting environments across Asia and Africa: hot-arid Ephedra foliata and cold-arid E. gerardiana. We adopted a comparative modelling approach and used occurrence points from extensive field surveys, supplemented with herbaria records and publicly available distribution data. Our study reveals that currently an area of 8.797334 × 106 km2 (8.8%) is potentially suitable for E. foliata and nearly half 4.759326 × 106 km2 (4.8%) for E. gerardiana. Under future climate change scenarios, distribution range of E. foliata is predicted to expand but contract in E. gerardiana. Similarly, E. foliata showed broader niche breadth which is predicted to increase under B1 (0.097-0.125) and B2 (0.878-0.930) climatic change scenarios. In contrast, E. gerardiana had narrower niche breadth and expected to further decrease under B1 (0.081-0.078) and B2 (0.878-0.854). The most influential bioclimatic variable governing the potential distribution and niche breadth of E. foliata was the precipitation of warmest quarter, whereas that of E. gerardiana was temperature seasonality. The results from our study can help in developing potential indicator plant species for assessment and monitoring of distribution range shifts in response to changing climate in the arid environments.
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Affiliation(s)
- Zubair Ahmad Rather
- Centre for Biodiversity and Taxonomy, Department of Botany, University of Kashmir, Srinagar, 190006, India.
| | - Rameez Ahmad
- Centre for Biodiversity and Taxonomy, Department of Botany, University of Kashmir, Srinagar, 190006, India
| | - Abdul Rashid Dar
- Department of Botany, Govt, Degree College (Boys), Kupwara, Jammu and Kashmir, India
| | | | - Anzar Ahmad Khuroo
- Centre for Biodiversity and Taxonomy, Department of Botany, University of Kashmir, Srinagar, 190006, India
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Tusifujiang Y, Zhang X, Gong L. The relative contribution of intraspecific variation and species turnover to the community-level foliar stoichiometric characteristics in different soil moisture and salinity habitats. PLoS One 2021; 16:e0246672. [PMID: 33596232 PMCID: PMC7888666 DOI: 10.1371/journal.pone.0246672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 01/24/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Trait-based approaches have been used to demonstrate the responses of plant functional traits to environmental change may manifest both among- and/or within-species. However, how community-level foliar stoichiometric characteristic variations respond to aridity and salinity is still not well-known. METHODS We calculated community weighted means (CWMs) and non-weighted means (CMs) of foliar C, N, and P concentrations (and their ratios) in a dryland plant community respond to high (HSW) and low soil moisture and salinity (LSW). Based on a sum of squares decomposition method, we determined the relative contributions of intraspecific variation and species turnover in both HSW and LSW habitats. RESULTS The CWMs of foliar C, C:N and C:P, and CM of N in the HSW habitat were significantly greater than those in the LSW habitat. The trait variations in two habitats were mainly driven by intraspecific variation, and its contribution to trait variation mostly declined with the decrease of soil moisture and salinity. The CWMs of foliar C-related stoichiometric characteristics were mainly dominated by species turnover in both habitats. Moreover, the contribution of species turnover to C and C:P variations showed an increasing trend in the LSW habitat. For CWMs, negative covariations between intraspecific variation and turnover occurred in HSW and positive covariations (except N:P) occurred in LSW; however, CMs were generally positively correlated in both habitats. CONCLUSIONS The intraspecific variation declined as drought stress intensified, which indicates that the adaptability of desert plants declined when the stress changed from salinity to aridity. The total variation of C-related traits in both habitats were mainly dominated by species turnover. These findings highlight the importance of intraspecific variation in driving desert plant response of community functional composition to salt stress, and the joint role of intraspecific variation and species turnover in resisting drought stress.
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Affiliation(s)
- Yelike Tusifujiang
- College of Resources and Environment Science, Xinjiang University, Urumqi, China.,Xinjiang Key Laboratory of Oasis Ecology, Xinjiang University, Urumqi, China
| | - Xueni Zhang
- College of Resources and Environment Science, Xinjiang University, Urumqi, China.,Xinjiang Key Laboratory of Oasis Ecology, Xinjiang University, Urumqi, China
| | - Lu Gong
- College of Resources and Environment Science, Xinjiang University, Urumqi, China.,Xinjiang Key Laboratory of Oasis Ecology, Xinjiang University, Urumqi, China
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Hu Y, Zuo X, Yue P, Zhao S, Guo X, Li X, Medina-Roldán E. Increased Precipitation Shapes Relationship between Biochemical and Functional Traits of Stipa glareosa in Grass-Dominated Rather than Shrub-Dominated Community in a Desert Steppe. PLANTS 2020; 9:plants9111463. [PMID: 33138183 PMCID: PMC7692965 DOI: 10.3390/plants9111463] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/14/2020] [Accepted: 10/26/2020] [Indexed: 11/16/2022]
Abstract
Understanding the effects of precipitation variations on plant biochemical and functional traits is crucial to predict plant adaptation to future climate changes. The dominant species, Stipa glareosa, plays an important role in maintaining the structure and function of plant communities in the desert steppe, Inner Mongolia. However, little is known about how altered precipitation affects biochemical and functional traits of S. glareosa in different communities in the desert steppe. Here, we examined the responses of biochemical and functional traits of S. glareosa in shrub- and grass-dominated communities to experimentally increased precipitation (control, +20%, +40%, and +60%). We found that +40% and +60% increased plant height and leaf dry matter content (LDMC) and decreased specific leaf area (SLA) of S. glareosa in grass community. For biochemical traits in grass community, +60% decreased the contents of protein and chlorophyll b (Cb), while +40% increased the relative electrical conductivity and superoxide dismutase. Additionally, +20% increased LDMC and malondialaenyde, and decreased SLA and protein in shrub community. Chlorophyll a, Cb, carotenoids, protein and superoxide dismutase in the grass community differed with shrub community, while +60% caused differences in SLA, LDMC, leaf carbon content, malondialaenyde and peroxidase between two communities. The positive or negative linear patterns were observed between different functional and biochemical traits in grass- rather than shrub-community. Soil water content explained changes in some biochemical traits in the grass community, but not for functional traits. These results suggest that increased precipitation can affect functional traits of S. glareosa in the grass community by altering biochemical traits caused by soil water content. The biochemical and functional traits of S. glareosa were more sensitive to extreme precipitation in grass- than shrub-community in the desert steppe. Our study highlights the important differences in adaptive strategies of S. glareosa in different plant communities at the same site to precipitation changes.
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Affiliation(s)
- Ya Hu
- Urat Desert-Grassland Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730000, China; (Y.H.); (P.Y.); (S.Z.); (X.G.); (X.L.)
- Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoan Zuo
- Urat Desert-Grassland Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730000, China; (Y.H.); (P.Y.); (S.Z.); (X.G.); (X.L.)
- Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730000, China
- Correspondence: ; Tel.: +86-139-1931-6226
| | - Ping Yue
- Urat Desert-Grassland Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730000, China; (Y.H.); (P.Y.); (S.Z.); (X.G.); (X.L.)
| | - Shenglong Zhao
- Urat Desert-Grassland Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730000, China; (Y.H.); (P.Y.); (S.Z.); (X.G.); (X.L.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xinxin Guo
- Urat Desert-Grassland Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730000, China; (Y.H.); (P.Y.); (S.Z.); (X.G.); (X.L.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiangyun Li
- Urat Desert-Grassland Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730000, China; (Y.H.); (P.Y.); (S.Z.); (X.G.); (X.L.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Eduardo Medina-Roldán
- Department of Health and Environmental Science, Xi’an Jiaotong-Liverpool University, Suzhou 215000, China;
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From Drones to Phenotype: Using UAV-LiDAR to Detect Species and Provenance Variation in Tree Productivity and Structure. REMOTE SENSING 2020. [DOI: 10.3390/rs12193184] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The use of unmanned aerial vehicles (UAVs) for remote sensing of natural environments has increased over the last decade. However, applications of this technology for high-throughput individual tree phenotyping in a quantitative genetic framework are rare. We here demonstrate a two-phased analytical pipeline that rapidly phenotypes and filters for genetic signals in traditional and novel tree productivity and architectural traits derived from ultra-dense light detection and ranging (LiDAR) point clouds. The goal of this study was rapidly phenotype individual trees to understand the genetic basis of ecologically and economically significant traits important for guiding the management of natural resources. Individual tree point clouds were acquired using UAV-LiDAR captured over a multi-provenance common-garden restoration field trial located in Tasmania, Australia, established using two eucalypt species (Eucalyptus pauciflora and Eucalyptus tenuiramis). Twenty-five tree productivity and architectural traits were calculated for each individual tree point cloud. The first phase of the analytical pipeline found significant species differences in 13 of the 25 derived traits, revealing key structural differences in productivity and crown architecture between species. The second phase investigated the within species variation in the same 25 structural traits. Significant provenance variation was detected for 20 structural traits in E. pauciflora and 10 in E. tenuiramis, with signals of divergent selection found for 11 and 7 traits, respectively, putatively driven by the home-site environment shaping the observed variation. Our results highlight the genetic-based diversity within and between species for traits important for forest structure, such as crown density and structural complexity. As species and provenances are being increasingly translocated across the landscape to mitigate the effects of rapid climate change, our results that were achieved through rapid phenotyping using UAV-LiDAR, raise the need to understand the functional value of productivity and architectural traits reflecting species and provenance differences in crown structure and the interplay they have on the dependent biotic communities.
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Akram MA, Wang X, Hu W, Xiong J, Zhang Y, Deng Y, Ran J, Deng J. Convergent Variations in the Leaf Traits of Desert Plants. PLANTS (BASEL, SWITZERLAND) 2020; 9:E990. [PMID: 32759791 PMCID: PMC7463800 DOI: 10.3390/plants9080990] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/18/2020] [Accepted: 07/29/2020] [Indexed: 11/16/2022]
Abstract
Convergence is commonly caused by environmental filtering, severe climatic conditions and local disturbance. The basic aim of the present study was to understand the pattern of leaf traits across diverse desert plant species in a common garden, in addition to determining the effect of plant life forms (PLF), such as herb, shrub and subshrub, phylogeny and soil properties on leaf traits. Six leaf traits, namely carbon (C), nitrogen (N), phosphorus (P), potassium (K), δ13C and leaf water potential (LWP) of 37 dominant desert plant species were investigated and analyzed. The C, N, K and δ13C concentrations in leaves of shrubs were found higher than herbs and subshrubs; however, P and LWP levels were higher in the leaves of subshrubs following herbs and shrubs. Moreover, leaf C showed a significant positive correlation with N and a negative correlation with δ13C. Leaf N exhibited a positive correlation with P. The relationship between soil and plant macro-elements was found generally insignificant but soil C and N exhibited a significant positive correlation with leaf P. Taxonomy showed a stronger effect on leaf C, N, P and δ13C than soil properties, explaining >50% of the total variability. C3 plants showed higher leaf C, N, P, K and LWP concentration than C4 plants, whereas C4 plants had higher δ13C than C3 plants. Legumes exhibited higher leaf C, N, K and LWP than nonlegumes, while nonlegumes had higher P and δ13C concentration than legumes. In all the species, significant phylogenetic signals (PS) were detected for C and N and nonsignificant PS for the rest of the leaf traits. In addition, these phylogenetic signals were found lower (K-value < 1), and the maximum K-value was noted for C (K = 0.35). The plants of common garden evolved and adapted themselves for their survival in the arid environment and showed convergent variations in their leaf traits. However, these variations were not phylogenetics-specific. Furthermore, marks of convergence found in leaf traits of the study area were most likely due to the environmental factors.
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Affiliation(s)
- Muhammad Adnan Akram
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Xiaoting Wang
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Weigang Hu
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Junlan Xiong
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Yahui Zhang
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Yan Deng
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Jinzhi Ran
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Jianming Deng
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu, China
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16
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Species richness and beta diversity patterns of multiple taxa along an elevational gradient in pastured grasslands in the European Alps. Sci Rep 2020; 10:12516. [PMID: 32719437 PMCID: PMC7385172 DOI: 10.1038/s41598-020-69569-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 07/06/2020] [Indexed: 11/08/2022] Open
Abstract
To understand how diversity is distributed in space is a fundamental aim for optimizing future species and community conservation. We examined in parallel species richness and beta diversity components of nine taxonomic groups along a finite space, represented by pastured grasslands along an elevational gradient. Beta diversity, which is assumed to bridge local alpha diversity to regional gamma diversity was partitioned into the two components turnover and nestedness and analyzed at two levels: from the lowest elevation to all other elevations, and between neighboring elevations. Species richness of vascular plants, butterflies, beetles, spiders and earthworms showed a hump-shaped relationship with increasing elevation, while it decreased linearly for grasshoppers and ants, but increased for lichens and bryophytes. For most of the groups, turnover increased with increasing elevational distance along the gradient while nestedness decreased. With regard to step-wise beta diversity, rates of turnover or nestedness did not change notably between neighboring steps for the majority of groups. Our results support the assumption that species communities occupying the same habitat significantly change along elevation, however transition seems to happen continuously and is not detectable between neighboring steps. Our findings, rather than delineating levels of major diversity losses, indicate that conservation actions targeting at a preventive protection for species and their environment in mountainous regions require the consideration of entire spatial settings.
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17
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Feng K, Wang S, Wei Z, Wang Z, Zhang Z, Wu Y, Zhang Y, Deng Y. Niche width of above- and below-ground organisms varied in predicting biodiversity profiling along a latitudinal gradient. Mol Ecol 2020; 29:1890-1902. [PMID: 32299139 DOI: 10.1111/mec.15441] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 04/01/2020] [Accepted: 04/02/2020] [Indexed: 11/29/2022]
Abstract
Biodiversity is the foundation of all ecosystems across the planet, and having a better understanding of its global distribution mechanism could be important for biodiversity conservation under global change. A niche width model, combined with metabolic theory, has successfully predicted the increase of α-diversity and decrease of β-diversity in the below-ground microbial community along an altitudinal mountain gradient. In this study, we evaluated this niche width model of above-ground plants (mainly trees and shrubs) and below-ground bulk soil microbial communities (i.e., bacteria and archaea) along a latitudinal gradient of forests in China. The niche widths of both plants and microbes increased with increasing temperature and precipitation, and with proximity to circumneutral pH. However, the α- and β-diversities (observed richness and Bray-Curtis dissimilarity, respectively) could not be accurately predicted by a single niche width model alone, either temperature, precipitation or pH. Considering the interactions among different niche width models, all three niche width models were combined to predict biodiversity at the community level using structural equation modelling. The results showed that the niche width model of circumneutral pH was most important in predicting diversity profiling (i.e., α- and β-diversity) for both plants and microbes, while niche width of precipitation and temperature showed both direct and indirect importance for microbe and plant biodiversity, respectively. Because the current niche width model neglects several scenarios related to taxon and environmental attributes, it still needs to be treated with caution in predicting biodiversity trends.
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Affiliation(s)
- Kai Feng
- CAS Key Laboratory for Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Shang Wang
- CAS Key Laboratory for Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
| | - Ziyan Wei
- Institute for Marine Science and Technology, Shandong University, Qingdao, China
| | - Zhujun Wang
- CAS Key Laboratory for Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Zhaojing Zhang
- CAS Key Laboratory for Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,Institute for Marine Science and Technology, Shandong University, Qingdao, China
| | - Yueni Wu
- CAS Key Laboratory for Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Yuguang Zhang
- The Key Laboratory of Forest Ecology and Environment of State Forestry Administration, Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, China
| | - Ye Deng
- CAS Key Laboratory for Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.,College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China.,Institute for Marine Science and Technology, Shandong University, Qingdao, China
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18
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Nielsen RL, James JJ, Drenovsky RE. Functional Traits Explain Variation in Chaparral Shrub Sensitivity to Altered Water and Nutrient Availability. FRONTIERS IN PLANT SCIENCE 2019; 10:505. [PMID: 31057595 PMCID: PMC6482203 DOI: 10.3389/fpls.2019.00505] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 04/02/2019] [Indexed: 06/09/2023]
Abstract
Worldwide drylands are threatened by changes in resource availability associated with global environmental change. Functional traits may help predict which species will be most responsive to these alterations in nutrient and water availability. Current functional trait work focuses on tissue construction and nutrient concentrations, but plant performance in low resource environments also may be strongly influenced by traits related to nutrient budgets and allocation. Our overall objective was to compare trait responses in a suite of serpentine and nonserpentine congener pairs from the California chaparral, a biodiverse region facing nutrient deposition and future changes in precipitation. In a common garden greenhouse environment, we grew small plants of Arctostaphylos manzanita, A. viscida, Ceanothus cuneatus, C. jepsonii, Quercus berberidifolia, and Q. durata in contrasting soil nutrient and moisture treatments. We measured a suite of traits representing physiological, growth, and mineral nutrient responses to these treatments. Overall, plant growth rate and leaf-level phosphorus use efficiency were greatest in the low water, high nutrient treatment, and lowest in the high water, low nutrient treatment. Variation in growth rate and plasticity among species and treatments was primarily associated with differences in mineral nutrition-based traits as opposed to differences in biomass allocation or specific leaf area. Namely, faster growing species and species with greater plasticity allocated more nitrogen and phosphorous to leaves and demonstrated greater photosynthetic phosphorus use efficiency. Overall, nonserpentine species had greater plasticity and biomass response to resource addition than serpentine species, and congener pairs responded to these resource additions more similarly to each other than species across congener pairs. This study extends our general understanding of how functional traits may influence species responses to environmental change and highlights the need to integrate mineral nutrition-based traits, including allocation of nutrient pools and nutrient use efficiency into this larger trait framework. Ultimately, this insight can help identify, in part, why coexisting species may vary in sensitivity to anthropogenic driven changes in soil resource availability.
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Affiliation(s)
- Reina L. Nielsen
- Biology Department, John Carroll University, University Heights, OH, United States
| | - Jeremy J. James
- Sierra Foothills Research and Extension Center, Browns Valley, CA, United States
| | - Rebecca E. Drenovsky
- Biology Department, John Carroll University, University Heights, OH, United States
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