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Caddisfly (Trichoptera) fauna of the Plitvice Lakes National Park, Croatia

Adult caddisflies were collected in the Plitvice Lakes NP area from 1997 to 2008 using different methods. Altogether, collections were made at 15 sampling sites and four main types of karst habitat were encompassed ; springs, streams, lakes and tufa barriers. A total of 81 species belonging to 43 genera and 13 families were collected. Four species, Crunoecia kempnyi, Oecetis lacustris, Ernodes articularis and Ernodes vicinus are new to the caddisfly fauna of Croatia. The highest species richness was recorded for the tufa barrier Labudovac. Distribution of species at particular habitat types is generally in accordance with their typical distribution determined by the seasonal variability of water temperature. The multi-dimensional scaling (MDS) analysis shows grouping of sites belonging to particular habitat type, however, a clustering of geographically close sites was also observed. This study represents an important contribution to the knowledge of caddisfly fauna of Croatia and of various karstic habitats in general.

Trichoptera; fauna; diversity; karst habitats; Croatia

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