Carabid beetle (Coleoptera, Carabidae) assemblages accross beech-fir forest - open habitat ecotones in Croatian Dinaric Alps

Brigić, Andreja (2012) Carabid beetle (Coleoptera, Carabidae) assemblages accross beech-fir forest - open habitat ecotones in Croatian Dinaric Alps. Doctoral thesis, Faculty of Science > Department of Biology.

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Abstract

Carabid beetles (Coleoptera, Carabidae) were studied across a forest-meadow ecotones and at abrupt and gradual forest edges of Dinaric beech-fir forests (as. Omphalodo-Fagetum) in the Gorski Kotar. Additional research was conducted in the virgin forest Čorkova uvala (NP Plitvice Lakes). Beetles were collected by pitfall traps from April to November 2009. A total of 31 574 individuals belonging to 89 species were collected. Carabid species richness and diversity were not significantly higher in ecotones compared to adjacent habitats, which is not in accordance with the classical ecotone hypothesis. However, diversity was considerably higher at the abrupt and gradual forest edges than in the forest interior. Carabid assemblages in the ecotones and forest edges were more similar to assemblages in the forest interior than to assemblages in the meadows. Carabids did not avoid ecotones and forest edges, but no strict edge specialists were found. However, positive responses of carabid species towards the ecotones and forest edges were observed. Embedded forest edges acted as barriers for most of open habitat species, while for some forest species they acted as filters. Soil temperature and humidity, and canopy openness significantly affected the carabid beetle assemblages in the ecotones and forest edges. Carabid species richness and activity density were significantly higher in managed forests, than in the virgin forest, though the carabid assemblages of both forests showed a high degree of similarity.

Item Type: Thesis (Doctoral thesis)
Keywords: ecotone, edge effect, forest edge, Carabidae, virgin forest, diversity
Supervisor: Hrašovec, Boris
Date: 2012
Number of Pages: 209
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Grozdana Sirotic
Date Deposited: 06 Feb 2014 15:59
Last Modified: 18 Sep 2014 12:45
URI: http://digre.pmf.unizg.hr/id/eprint/339

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