A conceptual framework for comparing species assemblages in native and exotic habitats

Article Abstract:

A graphical model is developed that could be used to explore how multiple taxonomic components respond to the changes due to the replacement of native species with exotic species. Such a conceptual framework helps to broaden the range of possible changes considered by ecologists who study the impacts of exotic species.

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Comparing species richness among assemblages using sample units: why not use extrapolation methods to standardize different sample sizes?

Article Abstract:

The reliability of 11 potential extrapolation methods over a range of different data sets and magnitudes of extrapolation are described. The application of extrapolation techniques to smaller samples prevents loss of information.

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Determinants of lepidopteran community composition and species diversity in eastern deciduous forests: roles of season, eco-region and patch-size

Article Abstract:

It is well known that both local and regional factors influence the presence of a given species in an ecological community. Community composition appears to be more sensitive to environmental variation than species richness.

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