Causality between abundance and diversity is weak for wintering migratory waterbirds

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	Causality between abundance and diversity is weak for wintering migratory waterbirds
	Guan, L; Jia, YF; Saintilan, N; Wang, YY; Liu, GH; Lei, GC; Wen, L
	2016
发表期刊	FRESHWATER BIOLOGY
ISSN	0046-5070
卷号	61 期号:2 页码:206-218
摘要	1. 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.
文章类型	Journal
关键词	habitat quality migratory waterbird more individuals hypothesis Poyang Lake species-area relationship
学科领域	Environmental Sciences & Ecology ; Marine & Freshwater Biology
研究领域[WOS]	Ecology ; Marine & Freshwater Biology
关键词[WOS]	SPECIES-ENERGY THEORY ; POYANG LAKE ; INDIVIDUALS HYPOTHESIS ; PRODUCTIVITY RELATIONSHIPS ; COMMUNITY STRUCTURE ; BIRD COMMUNITIES ; SCALE VARIATION ; SANTA-ROSALIA ; WOODY PLANT ; RICHNESS
收录类别	SCI
语种	英语
WOS记录号	WOS:000368034500003
出版者	WILEY
引用统计
文献类型	期刊论文
条目标识符	http://ir.igsnrr.ac.cn/handle/311030/44288
专题	生态系统网络观测与模拟院重点实验室_生态网络实验室
推荐引用方式 GB/T 7714	Guan, L,Jia, YF,Saintilan, N,et al. Causality between abundance and diversity is weak for wintering migratory waterbirds[J]. FRESHWATER BIOLOGY,2016,61(2):206-218.
APA	Guan, L.,Jia, YF.,Saintilan, N.,Wang, YY.,Liu, GH.,...&Wen, L.(2016).Causality between abundance and diversity is weak for wintering migratory waterbirds.FRESHWATER BIOLOGY,61(2),206-218.
MLA	Guan, L,et al."Causality between abundance and diversity is weak for wintering migratory waterbirds".FRESHWATER BIOLOGY 61.2(2016):206-218.