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The Habitat-Unit Model of Island Biogeography
Journal of Biogeography
Vol. 9, No. 4 (Jul., 1982), pp. 339-344
Published by: Wiley
Stable URL: http://www.jstor.org/stable/2844720
Page Count: 6
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A review of the aims and present status of island biogeography indicates that within-island habitat heterogeneity remains a major stumbling-block in current models, which incorporate its effects by including various indices of habitat diversity in multiple regressions. Where the islands are divisible into definable habitat units, an alternative approach is to relate species richness to area and isolation independently for each unit and then sum over all units. In a test archipelago off Western Australia, this 'habitat-unit' model provides significantly better predictions of actual species richness than does the 'classical' model.
Journal of Biogeography © 1982 Wiley