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Causality between abundance and diversity is weak for wintering migratory waterbirds
Guan L.; Jia, Y. F.; Saintilan, N.; Wang, Y. Y.; Liu, G. H.; Lei, G. C.; Wen, L.
Source PublicationFreshwater Biology
2016
Volume61
Issue2
Pages206-218
Keywordhabitat quality migratory waterbird more individuals hypothesis Poyang Lake species-area relationship species-energy theory poyang lake individuals hypothesis productivity relationships community structure bird communities scale variation santa-rosalia woody plant richness
Abstract1. The species-area relationship, which is closely linked with the more general species-energy theory, is one of the most well-known patterns in geographical ecology, but the underlying causes remain contentious. The more individuals hypothesis (MIH) articulates a causal path from resource availability to population abundance to species richness. The MIH has been tested with a range of taxa including plants, invertebrates and land birds but never with migratory waterbirds. 2. Using multiyear simultaneous survey data of wintering waterbirds in 10 lakes at Poyang Lake, China, and remotely sensed habitat condition measurements, we applied structural equation modelling (SEM) to test three causal paths: (A) good habitat conditions (e.g. habitat availability and heterogeneity) attract more species (high richness); (B) habitat conditions promote abundance (more individuals); and (C) habitat conditions promote abundance, which in turn increases richness. 3. We also modelled responses of species richness and abundance to habitat conditions using generalised additive mixed modelling (GAMM) to assess their co-variation. 4. While our analysis confirmed the first two paths, we found no support for the third, which is the central postulate of the MIH. In addition, in agreement with GAMM, SEM indicated that species richness was more closely related to habitat quality than to abundance. Our findings suggest that wintering waterbird species richness and abundance are two intrinsic community indices that covary with environmental variables.
Indexed BySCI
Language英语
ISSN0046-5070
DOI10.1111/fwb.12694
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/42958
Collection历年回溯文献
Recommended Citation
GB/T 7714
Guan L.,Jia, Y. F.,Saintilan, N.,et al. Causality between abundance and diversity is weak for wintering migratory waterbirds. 2016.
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