10.5061/DRYAD.1P1C0FS
Li, Zhengfei
Institute of Hydrobiology
Chinese Academy of Sciences
University of Chinese Academy of Sciences
Jiang, Xiaoming
Institute of Hydrobiology
Wang, Jun
Institute of Hydrobiology
Chinese Academy of Sciences
University of Chinese Academy of Sciences
Meng, Xingliang
Institute of Hydrobiology
Chinese Academy of Sciences
University of Chinese Academy of Sciences
Heino, Jani
Finnish Environment Institute
Xie, Zhicai
Institute of Hydrobiology
Data from: Multiple facets of stream macroinvertebrate alpha diversity are
driven by different ecological factors across an extensive altitudinal
gradient
Dryad
dataset
2019
macroinvertebrate
autumn,2015
Autumn 2015
2019-01-18T20:05:13Z
2019-01-18T20:05:13Z
en
https://doi.org/10.1002/ece3.4841
52443 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Environmental filtering and spatial structuring are important ecological
processes for the generation and maintenance of biodiversity. However, the
relative importance of these ecological drivers for multiple facets of
diversity is still poorly understood in highland streams. Here, we
examined the responses of three facets of stream macroinvertebrate alpha
diversity to local environmental, landscape-climate and spatial factors in
a near-pristine highland riverine ecosystem. Taxonomic (species richness,
Shannon diversity and evenness), functional (functional richness,
evenness, divergence and Rao's Quadratic entropy) and a proxy of
phylogenetic alpha diversity (taxonomic distinctness and variation in
taxonomic distinctness) were calculated for macroinvertebrate assemblages
in 55 stream sites. Then Pearson correlation coefficient was used to
explore congruence of indices within and across the three diversity
facets. Finally, multiple linear regression models and variation
partitioning were employed to identify the relative importance of
different ecological drivers of biodiversity. We found most correlations
between the diversity indices within the same facet, and between
functional richness and species richness were relatively strong. The two
phylogenetic diversity indices were quite independent from taxonomic
diversity but correlated with functional diversity indices to some extent.
Taxonomic and functional diversity were more strongly determined by
environmental variables, while phylogenetic diversity was better explained
by spatial factors. In terms of environmental variables, habitat-scale
variables describing habitat complexity and water physical features played
the primary role in determining the diversity patterns of all three
facets, whereas landscape factors appeared less influential. Our findings
indicated that both environmental and spatial factors are important
ecological drivers for biodiversity patterns of macroinvertebrates in
Tibetan streams, although their relative importance was contingent on
different facets of diversity. Such findings verified the complementary
roles of taxonomic, functional and phylogenetic diversity, and highlighted
the importance of comprehensively considering multiple ecological drivers
for different facets of diversity in biodiversity assessment.
species data of macroinvertebrates in 55 stream sitesspecies data.xlsx
China highland