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Discriminating the effects of local stressors from climatic factors and dispersal processes on multiple biodiversity dimensions of macroinvertebrate communities across subtropical drainage basins
Li, Zhengfei1; Liu, Zhenyuan1,2; Heino, Jani3; Jiang, Xiaoming4; Wang, Jun5; Tang, Tao1; Xie, Zhicai1
2020-04-01
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume711Issue:1Pages:11
Abstract

Metacommunity ecology emphasizes that community structure and diversity are not only determined by local environmental conditions through environmental filtering, but also by dispersal-related processes, such as mass effects, dispersal limitation and patch dynamics. However, the roles of dispersal processes are typically ignored in bioassessment approaches. Here, we simultaneously explored the potential influences of four groups of factors: local stressors, climatic factors, within-basin spatial factors and basin identity in explaining variation in diversity indices of macroinvertebrate assemblages from seven subtropical tributary rivers. A total of 12 biodiversity indices based on species identities, functional traits and taxonomic relatedness were calculated and used in the subsequent statistical analysis. Our results showed that, although differing in their relative importance, the four explanatory factor groups all played important roles in explaining variation in biodiversity indices. Of the pure fractions, index variation was best explained by local environmental stressors, whereas the other three explanatory factor groups appeared less influential. Furthermore, diversity indices from species, functional and taxonomic dimensions responded distinctly to the focal ecological factors, and differed in their abilities to portray the effects of human disturbances on macroinvertebrate communities. Taxonomic distinctness indices performed best, with the highest amount of variation associated to local stressors and hardly any variation explained by other factors, implying that these indices are robust in portraying human disturbances in streams. However, species diversity and functional diversity indices were also affected by spatial processes and climatic factors, suggesting that these indices should be used with caution in bioassessment. We hence conclude that environmental assessment of riverine ecosystems should not rely entirely on the perspective of species sorting. In contrast, both roles of spatial processes and environmental variables related to human disturbances and climatic variation should be incorporated in management and conservation of riverine ecosystems. (C) 2019 Elsevier B.V. All rights reserved.

KeywordEnvironmental filtering Dispersal processes Stream macroinvertebrates Species diversity Functional diversity Taxonomic distinctness
DOI10.1016/j.scitotenv.2019.134750
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000509344700049
WOS KeywordTAXONOMIC DISTINCTNESS ; FUNCTIONAL DIVERSITY ; METACOMMUNITY ECOLOGY ; ENVIRONMENTAL GRADIENTS ; ANTHROPOGENIC IMPACTS ; SPATIAL PROCESSES ; SPECIES TRAITS ; BETA DIVERSITY ; INDEXES ; PATTERNS
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/35115
Collection水生生物多样性与资源保护研究中心_期刊论文
Corresponding AuthorTang, Tao; Xie, Zhicai
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Finnish Environm Inst, Freshwater Ctr, Paavo Havaksen Tie 3,POB 413, FI-90014 Oulu, Finland
4.Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, Xian 710048, Peoples R China
5.Yunnan Univ, Inst Int Rivers & Ecosecur, Kunming 650091, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Li, Zhengfei,Liu, Zhenyuan,Heino, Jani,et al. Discriminating the effects of local stressors from climatic factors and dispersal processes on multiple biodiversity dimensions of macroinvertebrate communities across subtropical drainage basins[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,711(1):11.
APA Li, Zhengfei.,Liu, Zhenyuan.,Heino, Jani.,Jiang, Xiaoming.,Wang, Jun.,...&Xie, Zhicai.(2020).Discriminating the effects of local stressors from climatic factors and dispersal processes on multiple biodiversity dimensions of macroinvertebrate communities across subtropical drainage basins.SCIENCE OF THE TOTAL ENVIRONMENT,711(1),11.
MLA Li, Zhengfei,et al."Discriminating the effects of local stressors from climatic factors and dispersal processes on multiple biodiversity dimensions of macroinvertebrate communities across subtropical drainage basins".SCIENCE OF THE TOTAL ENVIRONMENT 711.1(2020):11.
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