1
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Braun J, Lortie CJ. Environmental filtering mediates desert ant community assembly at two spatial scales. Oecologia 2024; 205:231-244. [PMID: 38761196 DOI: 10.1007/s00442-024-05559-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 04/23/2024] [Indexed: 05/20/2024]
Abstract
Understanding the mechanisms that maintain species coexistence and determine patterns of community assembly are fundamental goals of ecology. Quantifying the relationship between species traits and stress gradients is a necessary step to disentangle assembly processes and to be able to predict the outcome of environmental change. We examined the hypothesis that desert ant communities are assembled by niche-based processes i.e., environmental filtering and limiting similarity. First, we used population-level morphological trait measurements to study the functional structure of ant communities along a dryland environmental stress gradient. Second, we developed species distribution models for each species to quantify large-scale climatic niche overlap between species. Body, femur, antennal scape, and head lengths were correlated with environmental gradients. Regionally, the ant community was significantly and functionally overdispersed in terms of morphological traits which suggests the importance of competition to ant community structure. Ant community assembly was also strongly influenced by environmental factors as the degree of functional trait divergence, but not phylogenetic divergence, decreased with increasing environmental stress. Thus, environmental stress likely mediates limiting similarity in these desert ecosystems. Species with lower climatic niche overlap were more dissimilar in morphological traits. This suggests that environmental filtering on ant functional traits is important at the scale of species distributions in addition to regional scales. This study shows that environmental and biotic filtering (i.e., niche-based assembly mechanisms) are jointly and non-independently structuring the ant community.
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Affiliation(s)
- Jenna Braun
- Department of Biology, York University, Toronto, ON, Canada.
| | - C J Lortie
- Department of Biology, York University, Toronto, ON, Canada
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2
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Guerrieri A, Cantera I, Marta S, Bonin A, Carteron A, Ambrosini R, Caccianiga M, Anthelme F, Azzoni RS, Almond P, Alviz Gazitúa P, Cauvy-Fraunié S, Ceballos Lievano JL, Chand P, Chand Sharma M, Clague J, Cochachín Rapre JA, Compostella C, Cruz Encarnación R, Dangles O, Deline P, Eger A, Erokhin S, Franzetti A, Gielly L, Gili F, Gobbi M, Hågvar S, Khedim N, Meneses RI, Peyre G, Pittino F, Proietto A, Rabatel A, Urseitova N, Yang Y, Zaginaev V, Zerboni A, Zimmer A, Taberlet P, Diolaiuti GA, Poulenard J, Fontaneto D, Thuiller W, Ficetola GF. Local climate modulates the development of soil nematode communities after glacier retreat. GLOBAL CHANGE BIOLOGY 2024; 30:e17057. [PMID: 38273541 DOI: 10.1111/gcb.17057] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 10/10/2023] [Indexed: 01/27/2024]
Abstract
The worldwide retreat of glaciers is causing a faster than ever increase in ice-free areas that are leading to the emergence of new ecosystems. Understanding the dynamics of these environments is critical to predicting the consequences of climate change on mountains and at high latitudes. Climatic differences between regions of the world could modulate the emergence of biodiversity and functionality after glacier retreat, yet global tests of this hypothesis are lacking. Nematodes are the most abundant soil animals, with keystone roles in ecosystem functioning, but the lack of global-scale studies limits our understanding of how the taxonomic and functional diversity of nematodes changes during the colonization of proglacial landscapes. We used environmental DNA metabarcoding to characterize nematode communities of 48 glacier forelands from five continents. We assessed how different facets of biodiversity change with the age of deglaciated terrains and tested the hypothesis that colonization patterns are different across forelands with different climatic conditions. Nematodes colonized ice-free areas almost immediately. Both taxonomic and functional richness quickly increased over time, but the increase in nematode diversity was modulated by climate, so that colonization started earlier in forelands with mild summer temperatures. Colder forelands initially hosted poor communities, but the colonization rate then accelerated, eventually leveling biodiversity differences between climatic regimes in the long term. Immediately after glacier retreat, communities were dominated by colonizer taxa with short generation time and r-ecological strategy but community composition shifted through time, with increased frequency of more persister taxa with K-ecological strategy. These changes mostly occurred through the addition of new traits instead of their replacement during succession. The effects of local climate on nematode colonization led to heterogeneous but predictable patterns around the world that likely affect soil communities and overall ecosystem development.
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Affiliation(s)
- Alessia Guerrieri
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Argaly, Bâtiment CleanSpace, Sainte-Hélène-du-Lac, France
| | - Isabel Cantera
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
| | - Silvio Marta
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Institute of Geosciences and Earth Resources, CNR, Pisa, Italy
| | - Aurélie Bonin
- Argaly, Bâtiment CleanSpace, Sainte-Hélène-du-Lac, France
| | - Alexis Carteron
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
| | - Roberto Ambrosini
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
| | - Marco Caccianiga
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milano, Italy
| | - Fabien Anthelme
- Laboratory AMAP, IRD, University of Montpellier, CIRAD, CNRS, INRA, Montpellier, France
| | - Roberto Sergio Azzoni
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Dipartimento di Scienze della Terra "Ardito Desio", Università degli Studi di Milano, Milano, Italy
| | - Peter Almond
- Department of Soil and Physical Sciences, Lincoln University, Lincoln, New Zealand
| | - Pablo Alviz Gazitúa
- Departamento de Ciencias Biológicas y Biodiversidad, Universidad de Los Lagos, Osorno, Chile
| | | | | | - Pritam Chand
- Department of Geography, School of Environment and Earth Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Milap Chand Sharma
- Centre for the Study of Regional Development - School of Social Sciences, Jawaharlal Nehru University, New Delhi, India
| | - John Clague
- Department of Earth Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
| | | | - Chiara Compostella
- Dipartimento di Scienze della Terra "Ardito Desio", Università degli Studi di Milano, Milano, Italy
| | | | - Olivier Dangles
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France
| | - Philip Deline
- Univ. Savoie Mont Blanc, Univ. Grenoble Alpes, EDYTEM, Chambéry, France
| | - Andre Eger
- Mannaki Whenua - Landcare Research, Soils and Landscapes, Lincoln, New Zealand
| | - Sergey Erokhin
- Institute of Water Problems and Hydro-Energy, Kyrgyz National Academy of Sciences, Bishkek, Kyrgyzstan
| | - Andrea Franzetti
- Department of Earth and Environmental Sciences (DISAT), University of Milano-Bicocca, Milano, Italy
| | - Ludovic Gielly
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, Grenoble, France
| | - Fabrizio Gili
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Mauro Gobbi
- Research and Museum Collections Office, Climate and Ecology Unit, MUSE-Science Museum, Corso del Lavoro e della Scienza, Trento, Italy
| | - Sigmund Hågvar
- Faculty of Environmental Sciences and Natural Resource Management (INA), Norwegian University of Life Sciences, Ås, Norway
- UiT - The Arctic University of Norway, Tromsø Museum, Tromsø, Norway
| | - Norine Khedim
- Univ. Savoie Mont Blanc, Univ. Grenoble Alpes, EDYTEM, Chambéry, France
| | - Rosa Isela Meneses
- Herbario Nacional de Bolivia: La Paz, La Paz, Bolivia
- Universidad Católica del Norte, Antofagasta, Chile
| | - Gwendolyn Peyre
- Department of Civil and Environmental Engineering, University of the Andes, Bogotá, Colombia
| | - Francesca Pittino
- Department of Earth and Environmental Sciences (DISAT), University of Milano-Bicocca, Milano, Italy
| | - Angela Proietto
- Dipartimento di Scienze della Terra "Ardito Desio", Università degli Studi di Milano, Milano, Italy
| | - Antoine Rabatel
- Univ. Grenoble Alpes, CNRS, IRD, Grenoble-INP, Institut des Géosciences de l'Environnement (IGE, UMR 5001), Grenoble, France
| | - Nurai Urseitova
- Institute of Water Problems and Hydro-Energy, Kyrgyz National Academy of Sciences, Bishkek, Kyrgyzstan
| | - Yan Yang
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
| | - Vitalii Zaginaev
- Mountain Societies Research Institute, University of Central Asia, Bishkek, Kyrgyzstan
| | - Andrea Zerboni
- Dipartimento di Scienze della Terra "Ardito Desio", Università degli Studi di Milano, Milano, Italy
| | - Anaïs Zimmer
- Department of Geography and the Environment, University of Texas at Austin, Austin, Texas, USA
| | - Pierre Taberlet
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, Grenoble, France
- UiT - The Arctic University of Norway, Tromsø Museum, Tromsø, Norway
| | | | - Jerome Poulenard
- Univ. Savoie Mont Blanc, Univ. Grenoble Alpes, EDYTEM, Chambéry, France
| | - Diego Fontaneto
- CNR - Water Research Institute, Verbania, Italy
- NBFC - National Biodiversity Future Center, Palermo, Italy
| | - Wilfried Thuiller
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, Grenoble, France
| | - Gentile Francesco Ficetola
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, Grenoble, France
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Cantera I, Jézéquel C, Dejean T, Murienne J, Vigouroux R, Valentini A, Brosse S. Deforestation strengthens environmental filtering and competitive exclusion in Neotropical streams and rivers. Proc Biol Sci 2023; 290:20231130. [PMID: 37700645 PMCID: PMC10498049 DOI: 10.1098/rspb.2023.1130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/16/2023] [Indexed: 09/14/2023] Open
Abstract
Understanding how anthropization impacts the assembly of species onto communities is pivotal to go beyond the observation of biodiversity changes and reveal how disturbances affect the environmental and biotic processes shaping biodiversity. Here, we propose a simple framework to measure the assembly processes underpinning functional convergence/divergence patterns. We applied this framework to northern Amazonian fish communities inventoried using environmental DNA in 35 stream sites and 64 river sites. We found that the harsh and unstable environmental conditions characterizing streams conveyed communities towards functional convergence, by filtering traits related to food acquisition and, to a lower extent, dispersal. Such environmental filtering also strengthened competition by excluding species having less competitive food acquisition traits. Instead, random species assembly was more marked in river communities, which may be explained by the downstream position of rivers facilitating the dispersion of species. Although fish assembly rules differed between streams and river fish communities, anthropogenic disturbances reduced functional divergence in both ecosystems, with a reinforcement of both environmental filtering and weaker competitor exclusion. This may explain the substantial biodiversity alterations observed under slight deforestation levels in Neotropical freshwater ecosystems and underlines their vulnerability to anthropic disturbances that not only affect species persistence but also modify community assembly rules.
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Affiliation(s)
- Isabel Cantera
- Department of Environmental Science and Policy, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy
- Laboratoire Evolution et Diversité Biologique, UMR5174, Université Paul Sabatier, CNRS, IRD, 118 route de Narbonne, 31062 Toulouse, France
| | - Céline Jézéquel
- Laboratoire Evolution et Diversité Biologique, UMR5174, Université Paul Sabatier, CNRS, IRD, 118 route de Narbonne, 31062 Toulouse, France
| | - Tony Dejean
- SPYGEN, 17 rue du Lac Saint-André Savoie Technolac, BP 274, 73375 Le Bourget-du-Lac, France
| | - Jérôme Murienne
- Laboratoire Evolution et Diversité Biologique, UMR5174, Université Paul Sabatier, CNRS, IRD, 118 route de Narbonne, 31062 Toulouse, France
| | - Régis Vigouroux
- HYDRECO, Laboratoire Environnement de Petit Saut, BP 823, 97388 Kourou Cedex, French Guiana
| | - Alice Valentini
- SPYGEN, 17 rue du Lac Saint-André Savoie Technolac, BP 274, 73375 Le Bourget-du-Lac, France
| | - Sébastien Brosse
- Laboratoire Evolution et Diversité Biologique, UMR5174, Université Paul Sabatier, CNRS, IRD, 118 route de Narbonne, 31062 Toulouse, France
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4
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Côte J, Poulet N, Blanc L, Grenouillet G. Disentangling the effects of different human disturbances on multifaceted biodiversity indices in freshwater fish. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2023; 33:e2845. [PMID: 36922403 DOI: 10.1002/eap.2845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 11/29/2022] [Accepted: 12/15/2022] [Indexed: 06/02/2023]
Abstract
Evaluating the effects of anthropogenic pressures on several biodiversity metrics can inform the management and monitoring of biodiversity loss. However, the type of disturbances can lead to different responses in different metrics. In this study, we aimed at disentangling the effects of different types of anthropogenic disturbances on freshwater fish communities. We calculated diversity indices for 1109 stream fish communities across France by computing richness and evenness components for ecological, morphological, and phylogenetic diversity, and used null models to estimate standardized effect sizes. We used generalized linear mixed models to assess the relative effects of environmental and anthropogenic drivers in driving those diversity indices. Our results demonstrated that all diversity indices exhibited significant responses to both climatic conditions and anthropogenic disturbances. While we observed a decrease of ecological and phylogenetic richness with the intensity of disturbance, a weak increase in morphological richness and evenness was apparent. Overall, our results demonstrated the importance of disentangling various types of disturbances when assessing human-induced ecological impacts and highlighted that different facets of diversity are not impacted identically by anthropogenic disturbances in stream fish communities. This calls for further work seeking to integrate biodiversity responses to human disturbances into a multifaceted framework, and could have beneficial implications when planning conservation action in freshwater ecosystems.
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Affiliation(s)
- Jessica Côte
- Laboratoire Evolution et Diversité Biologique (EDB), UMR5174, Université de Toulouse, CNRS, IRD, Université Toulouse III - Paul Sabatier, Toulouse, France
| | - Nicolas Poulet
- Pôle Ecohydraulique, Office Français de La Biodiversité, Institut des Mécaniques des Fluides, Toulouse, France
| | - Laurence Blanc
- Office français de la biodiversité, Direction régionale Occitanie, Toulouse, France
| | - Gaël Grenouillet
- Laboratoire Evolution et Diversité Biologique (EDB), UMR5174, Université de Toulouse, CNRS, IRD, Université Toulouse III - Paul Sabatier, Toulouse, France
- Institut Universitaire de France, Paris, France
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5
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Busch MH, Allen DC, Marske KA, Kuczynski L. The only lasting truth is change: multiple dimensions of biodiversity show historical legacy effects in community assembly processes of freshwater fish. OIKOS 2023. [DOI: 10.1111/oik.09713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Affiliation(s)
- Michelle H. Busch
- Geographical Ecology Group, Ecology and Evolutionary Biology Graduate Program, Dept of Biology, Dodge Family College of Arts and Sciences, Univ. of Oklahoma Norman OK USA
| | - Daniel C. Allen
- Geographical Ecology Group, Ecology and Evolutionary Biology Graduate Program, Dept of Biology, Dodge Family College of Arts and Sciences, Univ. of Oklahoma Norman OK USA
- Dept of Ecosystem Science and Management, Penn State Univ. University Park PA USA
| | - Katharine A. Marske
- Geographical Ecology Group, Ecology and Evolutionary Biology Graduate Program, Dept of Biology, Dodge Family College of Arts and Sciences, Univ. of Oklahoma Norman OK USA
| | - Lucie Kuczynski
- Geographical Ecology Group, Ecology and Evolutionary Biology Graduate Program, Dept of Biology, Dodge Family College of Arts and Sciences, Univ. of Oklahoma Norman OK USA
- Inst. for Chemistry and Biology of the Marine Environment (ICBM), Univ. of Oldenburg Wilhelmshaven Germany
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6
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Renault D, Hess MCM, Braschi J, Cuthbert RN, Sperandii MG, Bazzichetto M, Chabrerie O, Thiébaut G, Buisson E, Grandjean F, Bittebiere AK, Mouchet M, Massol F. Advancing biological invasion hypothesis testing using functional diversity indices. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 834:155102. [PMID: 35398434 DOI: 10.1016/j.scitotenv.2022.155102] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/31/2022] [Accepted: 04/03/2022] [Indexed: 06/14/2023]
Abstract
Pioneering investigations on the effects of introduced populations on community structure, ecosystem functioning and services have focused on the effects of invaders on taxonomic diversity. However, taxonomic-based diversity metrics overlook the heterogeneity of species roles within and among communities. As the homogenizing effects of biological invasions on community and ecosystem processes can be subtle, they may require the use of functional diversity indices to be properly evidenced. Starting from the listing of major functional diversity indices, alongside the presentation of their strengths and limitations, we focus on studies pertaining to the effects of invasive species on native communities and recipient ecosystems using functional diversity indices. By doing so, we reveal that functional diversity of the recipient community may strongly vary at the onset of the invasion process, while it stabilizes at intermediate and high levels of invasion. As functional changes occurring during the lag phase of an invasion have been poorly investigated, we show that it is still unknown whether there are consistent changes in functional diversity metrics that could indicate the end of the lag phase. Thus, we recommend providing information on the invasion stage under consideration when computing functional diversity metrics. For the existing literature, it is also surprising that very few studies explored the functional difference between organisms from the recipient communities and invaders of the same trophic levels, or assessed the effects of non-native organism establishment into a non-analogue versus an analogue community. By providing valuable tools for obtaining in-depth diagnostics of community structure and functioning, functional diversity indices can be applied for timely implementation of restoration plans and improved conservation strategies. To conclude, our work provides a first synthetic guide for their use in hypothesis testing in invasion biology.
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Affiliation(s)
- David Renault
- University of Rennes, CNRS, ECOBIO [(Ecosystèmes, biodiversité, évolution)] - UMR 6553, Rennes, France; Institut Universitaire de France, 1 rue Descartes, 75231 Paris Cedex 05, France.
| | - Manon C M Hess
- Institut Méditerranéen de Biodiversité et d'Écologie marine et continentale (IMBE), UMR Aix Marseille Université, Avignon Université, CNRS, IRD, France; Institut de recherche pour la conservation des zones humides méditerranéennes Tour du Valat, Le Sambuc, 13200 Arles, France; NGE-GUINTOLI, Saint-Etienne du Grès, Parc d'activités de Laurade - BP22, 13156 Tarascon Cedex, France
| | - Julie Braschi
- Institut Méditerranéen de Biodiversité et d'Écologie marine et continentale (IMBE), UMR Aix Marseille Université, Avignon Université, CNRS, IRD, France; Naturalia-Environnement, Ingénierie en écologie, 20 Rue Lawrence Durrell, 84140 Avignon, France
| | - Ross N Cuthbert
- GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, 24105 Kiel, Germany; School of Biological Sciences, Queen's University Belfast, BT9 5DL Belfast, United Kingdom
| | - Marta G Sperandii
- Dipartimento di Scienze, Università degli Studi Roma Tre, Viale G. Marconi 446, 00146 Roma, Italy
| | - Manuele Bazzichetto
- University of Rennes, CNRS, ECOBIO [(Ecosystèmes, biodiversité, évolution)] - UMR 6553, Rennes, France
| | - Olivier Chabrerie
- Université de Picardie Jules Verne, UMR 7058 CNRS EDYSAN, 1 rue des Louvels, 80037 Amiens Cedex 1, France
| | - Gabrielle Thiébaut
- University of Rennes, CNRS, ECOBIO [(Ecosystèmes, biodiversité, évolution)] - UMR 6553, Rennes, France
| | - Elise Buisson
- Institut Méditerranéen de Biodiversité et d'Écologie marine et continentale (IMBE), UMR Aix Marseille Université, Avignon Université, CNRS, IRD, France
| | - Frédéric Grandjean
- Université de Poitiers, UMR CNRS 7267 EBI- Ecologie et Biologie des Interactions, équipe EES, 5 rue Albert Turpin, Bat B8-B35, TSA 51106, 86073 Poitiers Cedex 09, France
| | - Anne-Kristel Bittebiere
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR5023 LEHNA, F-69622 Villeurbanne, France
| | - Maud Mouchet
- UMR 7204 MNHN-SU-CNRS CESCO, CP135, 57 rue Cuvier, 75005 Paris, France
| | - François Massol
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France
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7
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Lozada A, Bertin A. Spatial autocorrelation signatures of ecological determinants on plant community characteristics in high Andean wetlands. Sci Rep 2022; 12:13770. [PMID: 35962032 PMCID: PMC9374769 DOI: 10.1038/s41598-022-18132-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 08/05/2022] [Indexed: 11/22/2022] Open
Abstract
Understanding how biological communities are shaped is a central tenet of community ecology. Recent evidence highlights the potential of decoupling diversity spatial autocorrelation into its positive and negative components to reveal community assembly processes that would otherwise remain undetected, as well as to improve understanding of their impacts on different facets of diversity. Yet, such approaches have only been implemented to investigate the effects of a few assembly drivers on a small number of diversity components. Here, we used high Andean wetland plant communities over a strong latitudinal gradient to investigate the effects of various ecological factors on spatial autocorrelation patterns of nine community metrics with different informative values, including measures of richness, dominance, evenness and beta-diversity. By combining Moran's Eigenvector Maps, partial least squares structural equation modeling, and regression analyses, we revealed two groups of community parameters presenting contrasting spatial patterns due to specific sensitivities to ecological factors. While environmental variation and wetland connectivity increased positive spatial autocorrelation in richness and dominance-related parameters, species co-occurrence promoted negative spatial autocorrelation in evenness-related parameters. These results offer new insights regarding both how ecological processes affect species assembly, as well as the information captured by classical taxonomic parameters.
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Affiliation(s)
- Adriana Lozada
- Departamento de Biología, Facultad de Ciencias, Universidad de La Serena, Raúl Bitrán 1305, La Serena, Chile
| | - Angéline Bertin
- Departamento de Biología, Facultad de Ciencias, Universidad de La Serena, Raúl Bitrán 1305, La Serena, Chile.
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8
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Li Y, Xu H, Chen J, Xiao Y, Ni Y, Zhang R, Ye W, Lian J. Effects of soil resource availability on patterns of plant functional traits across spatial scales. Ecol Evol 2022; 12:e8587. [PMID: 35222961 PMCID: PMC8844114 DOI: 10.1002/ece3.8587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 12/31/2021] [Accepted: 01/11/2022] [Indexed: 11/09/2022] Open
Abstract
Identifying patterns and drivers of plant community assembly has long been a central issue in ecology. Many studies have explored the above questions using a trait-based approach; however, there are still unknowns around how patterns of plant functional traits vary with environmental gradients. In this study, the responses of individual and multivariate trait dispersions of 134 species to soil resource availability were examined based on correlational analysis and torus-translation tests across four spatial scales in a subtropical forest, China. Results indicated that different degrees of soil resource availability had different effects on trait dispersions. Specifically, limited resource (available phosphorus) showed negative relationships with trait dispersions, non-limited resource (available potassium) showed positive relationships with trait dispersions, and saturated resource (available nitrogen) had no effect on trait dispersions. Moreover, compared with the stem (wood density) and architectural trait (maximum height), we found that leaf functional traits can well reflect the response of plants to nutrient gradients. Lastly, the spatial scale only affected the magnitude but not the direction of the correlations between trait dispersions and environmental gradients. Overall, the results highlight the importance of soil resource availability and spatial scale in understanding how plant functional traits respond to environmental gradients.
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Affiliation(s)
- Yanpeng Li
- Key Laboratory of Vegetation Restoration and Management of Degraded EcosystemsGuangdong Provincial Key Laboratory of Applied Botany, South China Botanical GardenCenter for Plant Ecology, Core Botanical GardensChinese Academy of SciencesGuangzhouChina
- Forest Ecology Research CenterResearch Institute of Tropical ForestryChinese Academy of ForestryGuangzhouChina
| | - Han Xu
- Forest Ecology Research CenterResearch Institute of Tropical ForestryChinese Academy of ForestryGuangzhouChina
| | - Jie Chen
- Forest Ecology Research CenterResearch Institute of Tropical ForestryChinese Academy of ForestryGuangzhouChina
| | - Yihua Xiao
- Forest Ecology Research CenterResearch Institute of Tropical ForestryChinese Academy of ForestryGuangzhouChina
| | - Yunlong Ni
- Key Laboratory of Vegetation Restoration and Management of Degraded EcosystemsGuangdong Provincial Key Laboratory of Applied Botany, South China Botanical GardenCenter for Plant Ecology, Core Botanical GardensChinese Academy of SciencesGuangzhouChina
| | - Ruyun Zhang
- Key Laboratory of Vegetation Restoration and Management of Degraded EcosystemsGuangdong Provincial Key Laboratory of Applied Botany, South China Botanical GardenCenter for Plant Ecology, Core Botanical GardensChinese Academy of SciencesGuangzhouChina
| | - Wanhui Ye
- Key Laboratory of Vegetation Restoration and Management of Degraded EcosystemsGuangdong Provincial Key Laboratory of Applied Botany, South China Botanical GardenCenter for Plant Ecology, Core Botanical GardensChinese Academy of SciencesGuangzhouChina
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)GuangzhouChina
| | - Juyu Lian
- Key Laboratory of Vegetation Restoration and Management of Degraded EcosystemsGuangdong Provincial Key Laboratory of Applied Botany, South China Botanical GardenCenter for Plant Ecology, Core Botanical GardensChinese Academy of SciencesGuangzhouChina
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)GuangzhouChina
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9
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Deng M, Liu W, Li P, Jiang L, Li S, Jia Z, Yang S, Guo L, Wang Z, Liu L. Intraspecific trait variation drives grassland species richness and productivity under changing precipitation. Ecosphere 2021. [DOI: 10.1002/ecs2.3707] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Meifeng Deng
- State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Xiangshan Beijing 100093 China
- University of Chinese Academy of Sciences Yuquanlu Beijing 100049 China
| | - Weixing Liu
- State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Xiangshan Beijing 100093 China
- University of Chinese Academy of Sciences Yuquanlu Beijing 100049 China
| | - Ping Li
- State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Xiangshan Beijing 100093 China
- University of Chinese Academy of Sciences Yuquanlu Beijing 100049 China
| | - Lin Jiang
- School of Biology Georgia Institute of Technology 310 Ferst Drive Atlanta Georgia 30332 USA
| | - Shaopeng Li
- School of Ecological and Environmental Sciences East China Normal University Minxing Shanghai 200241 China
| | - Zhou Jia
- State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Xiangshan Beijing 100093 China
- University of Chinese Academy of Sciences Yuquanlu Beijing 100049 China
| | - Sen Yang
- State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Xiangshan Beijing 100093 China
- University of Chinese Academy of Sciences Yuquanlu Beijing 100049 China
| | - Lulu Guo
- State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Xiangshan Beijing 100093 China
- University of Chinese Academy of Sciences Yuquanlu Beijing 100049 China
| | - Zhenhua Wang
- State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Xiangshan Beijing 100093 China
- University of Chinese Academy of Sciences Yuquanlu Beijing 100049 China
| | - Lingli Liu
- State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Xiangshan Beijing 100093 China
- University of Chinese Academy of Sciences Yuquanlu Beijing 100049 China
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10
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Borics G, B-Béres V, Bácsi I, Lukács BA, T-Krasznai E, Botta-Dukát Z, Várbíró G. Trait convergence and trait divergence in lake phytoplankton reflect community assembly rules. Sci Rep 2020; 10:19599. [PMID: 33177646 PMCID: PMC7658209 DOI: 10.1038/s41598-020-76645-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 10/27/2020] [Indexed: 02/08/2023] Open
Abstract
Environmental filtering and limiting similarity are those locally acting processes that influence community structure. These mechanisms acting on the traits of species result in trait convergence or divergence within the communities. The role of these processes might change along environmental gradients, and it has been conceptualised in the stress-dominance hypothesis, which predicts that the relative importance of environmental filtering increases and competition decreases with increasing environmental stress. Analysing trait convergence and divergence in lake phytoplankton assemblages, we studied how the concepts of ‘limiting similarity’ versus ‘environmental filtering’ can be applied to these microscopic aquatic communities, and how they support or contradict the stress-dominance hypothesis. Using a null model approach, we investigated the divergence and convergence of phytoplankton traits along environmental gradients represented by canonical axes of an RDA. We used Rao’s quadratic entropy as a measure of functional diversity and calculated effect size (ES) values for each sample. Negative ES values refer to trait convergence, i.e., to the higher probability of the environmental filtering in community assembly, while positive values indicate trait divergence, stressing the importance of limiting similarity (niche partitioning), that is, the competition between the phytoplankters. Our results revealed that limiting similarity and environmental filtering may operate simultaneously in phytoplankton communities, but these assembly mechanisms influenced the distribution of phytoplankton traits differently, and the effects show considerable changes along with the studied scales. Studying the changes of ES values along with the various scales, our results partly supported the stress-dominance hypothesis, which predicts that the relative importance of environmental filtering increases and competition decreases with increasing environmental stress.
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Affiliation(s)
- Gábor Borics
- Department of Tisza Research, Danube Research Institute, Centre for Ecological Research, 18/c. Bem square, 4026, Debrecen, Hungary
| | - Viktória B-Béres
- Department of Tisza Research, Danube Research Institute, Centre for Ecological Research, 18/c. Bem square, 4026, Debrecen, Hungary
| | - István Bácsi
- Department of Hydrobiology, University of Debrecen, P.O. Box 57, 4010, Debrecen, Hungary
| | - Balázs A Lukács
- Wetland Ecology Research Group, Danube Research Institute, Centre for Ecological Research, 18/c. Bem square, 4026, Debrecen, Hungary
| | - E T-Krasznai
- Department of Tisza Research, Danube Research Institute, Centre for Ecological Research, 18/c. Bem square, 4026, Debrecen, Hungary
| | - Zoltán Botta-Dukát
- Institute of Ecology and Botany, Centre for Ecological Research, 2-4. Alkotmány Str., 2163, Vácrátót, Hungary
| | - Gábor Várbíró
- Department of Tisza Research, Danube Research Institute, Centre for Ecological Research, 18/c. Bem square, 4026, Debrecen, Hungary.
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11
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Trindade DPF, Carmona CP, Pärtel M. Temporal lags in observed and dark diversity in the Anthropocene. GLOBAL CHANGE BIOLOGY 2020; 26:3193-3201. [PMID: 32282128 DOI: 10.1111/gcb.15093] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
Understanding biodiversity changes in the Anthropocene (e.g. due to climate and land-use change) is an urgent ecological issue. This important task is challenging because global change effects and species responses are dependent on the spatial scales considered. Furthermore, responses are often not immediate. However, both scale and time delay issues can be tackled when, at each study site, we consider dynamics in both observed and dark diversity. Dark diversity includes those species in the region that can potentially establish and thrive in the local sites' conditions but are currently locally absent. Effectively, dark diversity connects biodiversity at the study site to the regional scales and defines the site-specific species pool (observed and dark diversity together). With dark diversity, it is possible to decompose species gains and losses into two space-related components: one associated with local dynamics (species moving from observed to dark diversity and vice versa) and another related to gains and losses of site-specific species pool (species moving to and from the pool after regional immigration, regional extinction or change in local ecological conditions). Extinction debt and immigration credit are useful to understand dynamics in observed diversity, but delays might happen in species pool changes as well. In this opinion piece we suggest that considering both observed and dark diversity and their temporal dynamics provides a deeper understanding of biodiversity changes. Considering both observed and dark diversity creates opportunities to improve conservation by allowing to identify species that are likely to go regionally extinct as well as foreseeing which of the species that newly arrive to the region are more likely to colonize local sites. Finally, by considering temporal lags and species gains and losses in observed and dark diversity, we combine phenomena at both spatial and temporal scales, providing a novel tool to examine biodiversity change in the Anthropocene.
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Affiliation(s)
- Diego P F Trindade
- Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
| | - Carlos P Carmona
- Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
| | - Meelis Pärtel
- Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
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12
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Understanding Community Assembly Based on Functional Traits, Ontogenetic Stages, Habitat Types and Spatial Scales in a Subtropical Forest. FORESTS 2019. [DOI: 10.3390/f10121055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Community assembly in natural communities is commonly explained by stochastic and niche-based processes such as environmental filtering and biotic interactions. Many studies have inferred the importance of these processes using a trait-based approach, however, there are still unknowns around what factors affect the importance of different assembly processes in natural communities. In this study, the trait dispersion patterns of 134 species were examined across different functional traits, habitat types, ontogenetic stages and spatial scales from a 20-ha Dinghushan Forest Dynamic Plot in China. The results showed that (1) functional traits related to productivity such as specific leaf area and leaf area mainly showed functional clustering, indicating these two functional traits were more affected by environmental filtering. However, trait dispersion patterns depended on more than the ecological significances of functional traits. For example, trait dispersions of leaf dry matter content, leaf thickness and maximum height did not show consistent patterns across habitat types and ontogenetic stages, suggesting more complex mechanisms may operate on these traits; (2) the trait dispersion varied with the habitat types and ontogenetic stages. Specifically, we found that habitat types only affected the strength of trait dispersions for all the five traits, but ontogenetic stages influenced both the strength and direction of trait dispersions, which depended on the traits selected; (3) the relative importance of soil, topography and space to trait dispersion varied with ontogenetic stages. Topography and space were more important for trait dispersion of saplings but soil was more important for trait dispersion of adults; (4) biotic interactions dominated community assembly at smaller spatial scales but environmental filtering dominated community assembly at larger spatial scales. Overall, the results highlight the importance of functional traits, habitat types, ontogenetic stages and spatial scales to community assembly in natural communities.
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13
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Radinger J, Alcaraz‐Hernández JD, García‐Berthou E. Environmental filtering governs the spatial distribution of alien fishes in a large, human‐impacted Mediterranean river. DIVERS DISTRIB 2019. [DOI: 10.1111/ddi.12895] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Affiliation(s)
- Johannes Radinger
- GRECO, Institute of Aquatic EcologyUniversity of Girona Girona Spain
- Leibniz‐Institute of Freshwater Ecology and Inland Fisheries Berlin Germany
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