NDLI: Removing the confounding effect of habitat specialization reveals the stabilizing contribution of diversity to species variability.

Content Provider	PubMed Central
Author	Kolasa, Jurek Li, Bai-lian
Abstract	Earlier studies have found that diversity, S, stabilizes the relative variability of combined biomass or abundance of species making up a community. However, the effect of S on variability of constituent species has been elusive. We hypothesize that the proportion of specialists increases with S and, because specialists are more variable, this shift in composition will mask the stabilizing effect of S on populations of species making up a community. The test uses data on variability and ecological specialization of species in 49 natural rock pool invertebrate communities. Initial analyses produced inconclusive results similar to earlier studies. However, when variability owing to species' specialization was factored out, S reduced species' abundance variability, although not in all communities. Our study explains why the stabilizing effect of diversity on populations has not been found earlier.
Related Links	http://dx.doi.org/10.1098/rsbl.2003.0059
Starting Page	198
File Format	PDF
ISSN	14712954
e-ISSN	14712954
Journal	Proceedings of the Royal Society B: Biological Sciences
Issue Number	Suppl 2
Volume Number	270
Language	English
Publisher Date	2003-11-07
Access Restriction	Open
Subject Keyword	Biological Sciences Research in Higher Education
Content Type	Text
Resource Type	Article

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Removing the confounding effect of habitat specialization reveals the stabilizing contribution of diversity to species variability.