PT Unknown AU Pockberger, M TI Abiotic and biotic impacts on fish in the Wadden Sea: Evaluating the effect of large scale climate oscillations, local ecosystem characteristics and invasive species PY 2016 PU Christian-Albrechts-Universität zu Kiel WP https://macau.uni-kiel.de/receive/diss_mods_00018422 LA en DE fish community; near coast habitat; large scale climate oscillation; Wadden Sea; Food web; Ecological network analysis; Sargassum muticum; Pomatoschistus microps; Caprella mutica; Fisch Gemeinschaft; Küsten nahe Habitate; großskalige klimatische Oscillation; Wattenmeer; Nahrungsnetz; Ökologische Netzwerkanalyse AB Fish use coastal shallow waters, such as the Wadden Sea as nursery and are intrinsically tied on these systems as important predators on benthos and plankton but also as prey for other fish, birds and marine mammals. The composition of the fish community in the Wadden Sea varies not only with the season but also with many other environmental changes, as this unique landscape is constantly being formed and changed by various abiotic and biotic factors. As the Wadden Sea represents a very dynamic and open habitat, species might be easily introduced and by successful reproduction become invasive, which may affect native species and in the course of time the food web. If invasive species occur in high abundances and dense aggregations new habitats may be formed. The occurrence of these bioengineer species can cause changes in local habitat characteristics and may impact the whole ecosystem. To investigate the impact of changing abiotic characteristics and the occurrence of invasive species on the ecosystem Wadden Sea, the following work plan was conducted. To uncover possible ongoing changes fish were chosen as the organismic subject group of the study. Fish are able to avoid unfavorable conditions by migration to other areas, indicating ongoing changes. They are also important as consumer components and links between different trophic levels in the food web of the Wadden Sea. PI Kiel ER