Inventory of the trichoptera species of the Danube and longitudinal zonation patterns of caddisfly communities within the Austro-Hungarian part
Anderwald, R. H.; Waringer, J. A.
A summary of the occurrence of trichopterans along the entire length of the Danube yielded 137 trichopteran taxa (genera or species). In addition, the zonation pattern of caddisfly communities within the Austro-Hungarian part of the Danube was analyzed quantitatively, based on light trap samples made by MALICKY (1978), CHANTARAMONGKOL (1983) and our own investigations. The results revealed that 97 % of the pooled catch consisted of only seven species: Psychomyia pusilla, Brachycentrus subnubilus, Hydropsyche contubernalis, H. bulgaromanorum, H. pellucidula, Ceraclea dissimilis and Tinodes waeneri. At contiguous sampling stations within Austria, the trichopteran communities changed discontinually and a marked change was observed between the Austrian and Hungarian river section.