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Impact of habitat type and landscape structure on biomass, species richness and functional diversity of ground beetles

By B.A. Woodcock, J. Redhead, A.J. Vanbergen, L. Hulmes, S. Hulmes, J. Peyton, M. Nowakowsik, R.F. Pywell and M.S. Heard

Abstract

This study investigated how local habitat type and landscape structure affects the biomass, species richness and functional diversity of ground beetles sampled from a 1000 ha UK arable farm. At a local scale habitat type was either crop (winter wheat and oilseed rape) or one of five field margin habitats. Surrounding each of these sampling areas, landscape structure was defined using remote sensed data from Specim AISA Eagle (400–970 nm) and Hawk (970–2450 nm) hyperspectral sensors. Ground beetles were divided into predatory and phytophagous trophic levels. Local habitat type only affected phytophagous ground beetle biomass, which was lowest within crops. Total biomass of predatory beetles was negatively correlated, and species richness positively correlated, with landscape habitat diversity. Only the functional diversity of predatory ground beetles responded to landscape structure, showing positive correlations with the proportion of Tussock Grass field margins. Predatory ground beetles show a greater dependence on landscape structure than phytophagous species, a response that is attributed to their high mobility needed for movement between dynamically variable food resources

Publisher: Elsevier
Year: 2010
DOI identifier: 10.1016/j.agee.2010.07.018
OAI identifier: oai:nora.nerc.ac.uk:13296
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