WIKINDX Resources
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Yee, T. W., & Mitchell, N. D. (1991). Generalized additive models in plant ecology. Journal of Vegetation Science, 2, 587–602.
Added by: Eric Peterson 2007-10-19 23:55:03
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Abstract
Generalized additive models (GAMs) are a nonparametric
extension of generalized linear models (GLMs).
They are introduced here as an exploratory tool in the analysis
of species distributions with respect to climate. An important
result is that the long-debated question of whether a response
curve, in one dimension, is actually symmetric and bellshaped
or not, can be tested using GAMs. GAMs and GLMs
are discussed and are illustrated by three examples using
binary data. A grey-scale plot of one of the fits is constructed
to indicate which areas on amap seem climatically suitable for
that species. This is useful for species introductions. Further
applications are mentioned.
Added by: Eric Peterson
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