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Decoupling species richness variation and spatial turnover in beta diversity across a fragmented landscape
BACKGROUND: How habitat fragmentation affects the relationship between local richness and the variation in community composition across space is important to both ecology and conservation biology, but this effect remains poorly understood. METHODS: Here, we present an empirical study to address this...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
PeerJ Inc.
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6462183/ https://www.ncbi.nlm.nih.gov/pubmed/30993046 http://dx.doi.org/10.7717/peerj.6714 |
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author | Hu, Guang Wilson, Maxwell C. Wu, Jianguo Yu, Jingjing Yu, Mingjian |
author_facet | Hu, Guang Wilson, Maxwell C. Wu, Jianguo Yu, Jingjing Yu, Mingjian |
author_sort | Hu, Guang |
collection | PubMed |
description | BACKGROUND: How habitat fragmentation affects the relationship between local richness and the variation in community composition across space is important to both ecology and conservation biology, but this effect remains poorly understood. METHODS: Here, we present an empirical study to address this topic in a fragmented landscape, the Thousand Island Lake (TIL), an artificial land-bridge island system with more than 1,000 islands, which provides an “experimental” fragmented landscape with a homogeneous matrix and similar successional history. We measured species composition and plant functional type (PFT) on 29 islands, and tested the effects of island area and isolation on the relationship between α- and β-diversity. General Linear Models were applied to test the impact of habitat fragmentation. In addition, variation partitioning was used to decouple α-diversity dependent and α-diversity independent spatial turnover in β-diversity of the plant community and across different PFTs. RESULTS: We found habitat fragmentation influences β-diversity of plants primarily by modifying local α-diversity, not spatial turnover in the TIL system. We also found area-dependent environmental filtering and differential plant responses across functional types were the most likely underlying driving mechanisms. DISCUSSION: These results highlight the importance of hierarchical linkages between components of biodiversity across scales in fragmented landscapes, and have practical conservation implications. |
format | Online Article Text |
id | pubmed-6462183 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | PeerJ Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-64621832019-04-16 Decoupling species richness variation and spatial turnover in beta diversity across a fragmented landscape Hu, Guang Wilson, Maxwell C. Wu, Jianguo Yu, Jingjing Yu, Mingjian PeerJ Biodiversity BACKGROUND: How habitat fragmentation affects the relationship between local richness and the variation in community composition across space is important to both ecology and conservation biology, but this effect remains poorly understood. METHODS: Here, we present an empirical study to address this topic in a fragmented landscape, the Thousand Island Lake (TIL), an artificial land-bridge island system with more than 1,000 islands, which provides an “experimental” fragmented landscape with a homogeneous matrix and similar successional history. We measured species composition and plant functional type (PFT) on 29 islands, and tested the effects of island area and isolation on the relationship between α- and β-diversity. General Linear Models were applied to test the impact of habitat fragmentation. In addition, variation partitioning was used to decouple α-diversity dependent and α-diversity independent spatial turnover in β-diversity of the plant community and across different PFTs. RESULTS: We found habitat fragmentation influences β-diversity of plants primarily by modifying local α-diversity, not spatial turnover in the TIL system. We also found area-dependent environmental filtering and differential plant responses across functional types were the most likely underlying driving mechanisms. DISCUSSION: These results highlight the importance of hierarchical linkages between components of biodiversity across scales in fragmented landscapes, and have practical conservation implications. PeerJ Inc. 2019-04-10 /pmc/articles/PMC6462183/ /pubmed/30993046 http://dx.doi.org/10.7717/peerj.6714 Text en © 2019 Hu et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. |
spellingShingle | Biodiversity Hu, Guang Wilson, Maxwell C. Wu, Jianguo Yu, Jingjing Yu, Mingjian Decoupling species richness variation and spatial turnover in beta diversity across a fragmented landscape |
title | Decoupling species richness variation and spatial turnover in beta diversity across a fragmented landscape |
title_full | Decoupling species richness variation and spatial turnover in beta diversity across a fragmented landscape |
title_fullStr | Decoupling species richness variation and spatial turnover in beta diversity across a fragmented landscape |
title_full_unstemmed | Decoupling species richness variation and spatial turnover in beta diversity across a fragmented landscape |
title_short | Decoupling species richness variation and spatial turnover in beta diversity across a fragmented landscape |
title_sort | decoupling species richness variation and spatial turnover in beta diversity across a fragmented landscape |
topic | Biodiversity |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6462183/ https://www.ncbi.nlm.nih.gov/pubmed/30993046 http://dx.doi.org/10.7717/peerj.6714 |
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