Journal
BIODIVERSITY AND CONSERVATION
Volume 18, Issue 1, Pages 203-217Publisher
SPRINGER
DOI: 10.1007/s10531-008-9467-4
Keywords
Conservation; Crickets; Dragonflies; Generalized linear modelling; Grasshoppers; Hoverflies; Herpetofauna; Mosses; Species richness; The Netherlands
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We examined the species richness patterns of five different species groups (mosses, reptiles and amphibians, grasshoppers and crickets, dragonflies, and hoverflies) in the Netherlands (41,500 km(2)) using sampling units of 5 x 5 km. We compared the spatial patterns of species richness of the five groups using Spearman's rank correlation and used a stepwise multiple regression generalized linear modelling (GLM) approach to assess their relation with a set of 36 environmental variables, selected because they can be related to the several hypotheses on biodiversity patterns. Species richness patterns of the five groups were to a certain extent congruent. Our data suggest that environmental heterogeneity (in particular habitat heterogeneity) is one of the major determinants of variation in species richness within these five groups. We found that for taxonomic groups comprising a low number of species, our regression model explained more of the variability in species richness than for taxonomic groups with a large number of species.
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