期刊
BIOLOGY LETTERS
卷 6, 期 1, 页码 120-123出版社
ROYAL SOC
DOI: 10.1098/rsbl.2009.0669
关键词
ecological niche; mixed models; information theory; intraspecific variability
资金
- ANR- Diversitalp [ANR- 07- BDIV- 014]
- EU [066 866GOCE]
Habitat suitability models, which relate species occurrences to environmental variables, are assumed to predict suitable conditions for a given species. If these models are reliable, they should relate to change in plant growth and function. In this paper, we ask the question whether habitat suitability models are able to predict variation in plant functional traits, often assumed to be a good surrogate for a species' overall health and vigour. Using a thorough sampling design, we show a tight link between variation in plant functional traits and habitat suitability for some species, but not for others. Our contrasting results pave the way towards a better understanding of how species cope with varying habitat conditions and demonstrate that habitat suitability models can provide meaningful descriptions of the functional niche in some cases, but not in others.
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