0000000001327126
AUTHOR
Tibor Erős
Functional diversity of the Middle-Danubian fish fauna, the role of non-native species
It is well known that physical appearance and behavior of each species reflects to its habitat preference, feeding habits, etc. Therefore, one can describe the ecological role of species in a community by characterizing their life-history and functional traits. By applying this framework across all species present in the community, we can characterize its funcitonal diversity. The Middle-Danubian hydrosystem is characterised by valuable and diverse fish fauna, at the same time this area is highly exposed to the invasions because of the „natural" range expansion of Pontos-Caspic species and due to the illegal fish stockings. And although several notes deal with the effect of non-native speci…
The distribution patterns, risk and potential effect of non-indigenous fish species of Hungarian waters
Translocation and introduction of non-indigenous species might be considered as one of the least reversible human induced changes in nature. The background factors of a successful biological invasion are diverse; and the complete eradication of established invasive species seems practically impossible. The aim of our presentation is to (1) revise the trends and spreading mechanisms of non-indigenous species; (2) assess the potential ecological risk of new species in the catchment basin of a shallow lake (Lake Balaton, Hungary) and (3) to analyze the local and regional factors affecting the distribution patterns of gibel carp (Carassius gibelio), an effective invasive species of the region, …