University of Natural Resources and Life Sciences, Vienna (BOKU) - Research portal
Gewählte Master / Diploma Thesis:
Carina Christina Suchentrunk
(2018):
Bestandsentwicklung und Bruterfolg des Weißstorches (Ciconia ciconia L.) in Illmitz (Bgld.).
Master / Diploma Thesis - Institut für Wildbiologie und Jagdwirtschaft (IWJ),
BOKU-Universität für Bodenkultur,
pp 36.
UB BOKU
obvsg
- Abstract:
- Over the past decades, the breeding population of white storks (Ciconia ciconia) in Burgenland has steadily declined. The breeding population and success of the white stork colony in Illmitz, northern Burgenland has also fluctuated considerably on an annual basis. In addition, the breeding success has varied greatly among individual eyries. This report examines the decisive factors for the development of the population and the breeding success of the white stork colony in Illmitz. The data are based on annual observations of the eyries carried out between 1985 and 2016. Parameters such as nest position and altitude; the number, developmental status and losses of fledglings; as well as egg losses were recorded for 19 eyries. The water level of adjacent salt lakes and climate information were also assessed for their influence on the population and breeding success. To determine whether there is a correlation between the breeding population, breeding success of the population and surface sealing, yearly orthophotos were compared during the period between 1999 and 2016. There was a significant correlation between the developmental state of the juvenile birds and the precipitation, air temperature and lake water levels. The precipitation had no influence on breeding success, while the effects of the air temperature and the Illmitzer Zicksee water level were significant. The location and altitude of the eyries did not have a substantial impact. The extension of the village border negatively alters the population and breeding success of the white storks in Illmitz, due to the loss of feeding grounds in the immediate area of the breeding colony.
- Beurteilende(r): Hackländer Klaus
- 1.Mitwirkender: Nopp-Mayr Ursula