Habitat associations of carabid beetles in fields and forests on the Åland Islands, SW Finland

作者: Jari Niemela , Eero Halme

DOI: 10.1111/J.1600-0587.1992.TB00001.X

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摘要: Carabid beetles (Coleoptera, Carabidae) were collected by using pitfall traps in 68 sites on the Aland Islands, SW Finland The divided into four environmental types 1) cultivated fields and grazed pastures. 2) recently abandoned fields, 3) abandoned, overgrown cultivations, 4) forests A total of 4901 carabids belonging to 77 species caught Twenty most abundant classified distributional according their occurrence among various generalists (five species), field open habitat (seven forest (three species) Associations with strictest However, found low numbers outside each preferred type number diversity was highest pastures lowest forests, which agrees previously detected patterns mainland Pairwise similarity carabid assemblages between two cultivations spatial distribution species, Pterostichus melanarius P niger, examined detail ascertain whether any interspecific interaction could help explain different island-mainland observed previous studies

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