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Aktivitäten von Laufkäfern (Carabidae Col.) in einem intensiv wirtschaftenden Ackerbaubetrieb–Ein Beitrag zur Agrarökosystemanalyse
Author(s) -
Knauer N.,
Stachow U.
Publication year - 1987
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1987.tb00621.x
Subject(s) - agroecosystem , biology , crop , phenology , fauna , agronomy , winter wheat , ecology , agriculture
Activities of ground beetles (Carabidae Col.) in an intensively runfarm – A contribution to the analysis of agroecosystems During three vegetation periods (1983‐1985) the fauna of ground beetles which belongs to a dominating crop species (winter wheat, winter barley, winter rape) was investigated on an intensively run farm near Kiel (Schleswig‐Holstein). In 117 231 individuals 77 species were found. The most common species were: Platynus dorsalis (56.2%), Pterostichus melanarius (10.6%), Pl. assimilis (9.0%) and Bembidion tetracolum (7.1%). Further five species made up 7.7% , the rest of 68 species made up 9.4%. The diversity (Hs) decreased towards the edge of the field. In barley higher rates than in the other two crops were stated. The phenology of the species partly differed in the crops. A contrast of winter wheat with winter rape fields showed a possible strong influence of insecticide applications. For some common species a migration from hedges into the fields could be established in spring. The greatest similarity (species identity, H‐diff) was found in stands which occurred in the same crop. There were differences between the crops. This is also true for other factors that are the same for stands. The investigations contribute to the analysis of agroecosystems. They demonstrate that there are interactions between hedges and fields. These interactions can be taken as components of selfregulating mechanisms in the agroecosystem.