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Scale-dependent changes in the functional diversity of macrophytes in subtropical freshwater lakes in south China

Ecological processes are generally scale-dependent and there is little consensus about the relative importance of deterministic versus stochastic processes in driving patterns of biological diversity. We investigated how the relationship between functional dispersion and environmental gradients chan...

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Autores principales: Fu, Hui, Zhong, Jiayou, Fang, Shaowen, Hu, Jianmin, Guo, Chunjing, Lou, Qian, Yuan, Guixiang, Dai, Taotao, Li, Zhongqiang, Zhang, Meng, Li, Wei, Xu, Jun, Cao, Te
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5557923/
https://www.ncbi.nlm.nih.gov/pubmed/28811648
http://dx.doi.org/10.1038/s41598-017-08844-8
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author Fu, Hui
Zhong, Jiayou
Fang, Shaowen
Hu, Jianmin
Guo, Chunjing
Lou, Qian
Yuan, Guixiang
Dai, Taotao
Li, Zhongqiang
Zhang, Meng
Li, Wei
Xu, Jun
Cao, Te
author_facet Fu, Hui
Zhong, Jiayou
Fang, Shaowen
Hu, Jianmin
Guo, Chunjing
Lou, Qian
Yuan, Guixiang
Dai, Taotao
Li, Zhongqiang
Zhang, Meng
Li, Wei
Xu, Jun
Cao, Te
author_sort Fu, Hui
collection PubMed
description Ecological processes are generally scale-dependent and there is little consensus about the relative importance of deterministic versus stochastic processes in driving patterns of biological diversity. We investigated how the relationship between functional dispersion and environmental gradients changes with spatial scale in subtropical freshwater lakes. The functional alpha and beta dispersions of all the tested traits were significantly under-dispersed across spatial scales and along environmental gradients. Results showed more functional similarity within communities in leaf dry mass content and flowering duration but less functional turnover among communities in all the tested traits at regional scales (Yunnan-Guizhou plateau and the middle and low reaches of the Yangtze River). The strengths and directions of environmental effects on the functional alpha and beta dispersions depended on the selected traits, diversity metrics and spatial scales. Surprisingly, broad-scale factors - elevation and water transparency - decreased the functional turnover for most traits along the gradients, whereas fine-scale factors - water depth - produced the opposite patterns along the gradient, depending on the trait selected. Our study highlights the dominant role of deterministic assembly processes in structuring the local functional composition and governing the spatial functional turnover of macrophyte communities across multiple spatial scales.
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spelling pubmed-55579232017-08-16 Scale-dependent changes in the functional diversity of macrophytes in subtropical freshwater lakes in south China Fu, Hui Zhong, Jiayou Fang, Shaowen Hu, Jianmin Guo, Chunjing Lou, Qian Yuan, Guixiang Dai, Taotao Li, Zhongqiang Zhang, Meng Li, Wei Xu, Jun Cao, Te Sci Rep Article Ecological processes are generally scale-dependent and there is little consensus about the relative importance of deterministic versus stochastic processes in driving patterns of biological diversity. We investigated how the relationship between functional dispersion and environmental gradients changes with spatial scale in subtropical freshwater lakes. The functional alpha and beta dispersions of all the tested traits were significantly under-dispersed across spatial scales and along environmental gradients. Results showed more functional similarity within communities in leaf dry mass content and flowering duration but less functional turnover among communities in all the tested traits at regional scales (Yunnan-Guizhou plateau and the middle and low reaches of the Yangtze River). The strengths and directions of environmental effects on the functional alpha and beta dispersions depended on the selected traits, diversity metrics and spatial scales. Surprisingly, broad-scale factors - elevation and water transparency - decreased the functional turnover for most traits along the gradients, whereas fine-scale factors - water depth - produced the opposite patterns along the gradient, depending on the trait selected. Our study highlights the dominant role of deterministic assembly processes in structuring the local functional composition and governing the spatial functional turnover of macrophyte communities across multiple spatial scales. Nature Publishing Group UK 2017-08-15 /pmc/articles/PMC5557923/ /pubmed/28811648 http://dx.doi.org/10.1038/s41598-017-08844-8 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Fu, Hui
Zhong, Jiayou
Fang, Shaowen
Hu, Jianmin
Guo, Chunjing
Lou, Qian
Yuan, Guixiang
Dai, Taotao
Li, Zhongqiang
Zhang, Meng
Li, Wei
Xu, Jun
Cao, Te
Scale-dependent changes in the functional diversity of macrophytes in subtropical freshwater lakes in south China
title Scale-dependent changes in the functional diversity of macrophytes in subtropical freshwater lakes in south China
title_full Scale-dependent changes in the functional diversity of macrophytes in subtropical freshwater lakes in south China
title_fullStr Scale-dependent changes in the functional diversity of macrophytes in subtropical freshwater lakes in south China
title_full_unstemmed Scale-dependent changes in the functional diversity of macrophytes in subtropical freshwater lakes in south China
title_short Scale-dependent changes in the functional diversity of macrophytes in subtropical freshwater lakes in south China
title_sort scale-dependent changes in the functional diversity of macrophytes in subtropical freshwater lakes in south china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5557923/
https://www.ncbi.nlm.nih.gov/pubmed/28811648
http://dx.doi.org/10.1038/s41598-017-08844-8
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