Journal article
Biotic indicators of carabid species richness on organically and conventionally managed arable fields



Publication Details
Authors:
Döring, T.; Hiller, A.; Wehke, S.; Schulte, G.; Broll, G.
Publisher:
Elsevier Science B.V., Amsterdam.
Publication year:
2003
Journal:
Agriculture, Ecosystems and Environment
Pages range:
133-139
Volume number:
98
ISSN:
0167-8809

Abstract
Carabids, a species rich arthropod family, potentially contribute much to biodiversity it) agroecosystems, but assessing and monitoring carabid diversity is costly and time consuming. Therefore, this study aimed at finding more easily measurable parameters indicating high carabid diversity within organic and conventional management systems. Cover and number of weed species as well as activity density of single carabid species and of total carabids were investigated as potential indicators of carabid species richness. The study was carried out near Reckenfeld in Westphalia on sandy Plaggenesch soils. Three organically and four conventionally managed fields (cereals and corn) were investigated at the field margins and in the field centres from April to August 1999. Additionally, data of carabid catches and weed flora in winter cereals from an extended study in Duren (Northrhine-Westphalia) were reanalysed to validate the results. However, neither of the potential indicators showed consistently significant positive correlation with carabid diversity. This is partly attributed to the low variability of management conditions within the management systems in the studies presented. (C) 2003 Elsevier Science B.V. All rights reserved.


Authors/Editors

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