Large Scale Relationship between Aquatic Insect Traits and Climate

摘要: Climate is the predominant environmental driver of freshwater assemblage pattern on large spatial scales, and traits organisms have shown considerable potential to identify impacts climate change. Although several studies suggest that may indicate vulnerability change, empirical relationship between trait composition has been rarely examined scales. We compared responses assumed climate-associated from six grouping features 35 bioclimatic indices (~18 km resolution) for five insect orders (Diptera, Ephemeroptera, Odonata, Plecoptera Trichoptera), evaluated their changing distribution under future change identified most influential indices. The data comprised 782 species 395 genera sampled in 4,752 stream sites during 2006 2007 Germany (~357,000 km² extent). quantified variability autocorrelation are associated with combined individual Traits temperature preference feature products other underlying traits, order Ephemeroptera exhibited strongest response as well highest pattern. Regarding insects general ephemeropterans preferring very cold showed response, trichopterans moderate distribution. seasonal radiation moisture aspects, thus changes these aspects affect responsive drive a Our findings support development trait-based metrics predict detect climate-related assemblages.