Date:6/4/2008

educed and at the same time the cormorant population structure protected, whereby the crucial buffer would still remain intact." By comparison, oiling the eggs - mostly practiced in Denmark - come off less well in the model, as the consequence was a high fluctuation in the population, increasing the risk for the cormorant population. With his model, the DBU (Deutsche Bundesstiftung Umwelt) research fellow Zeibig was able to set up some first rules of thumb for an ecologically compatible regulation of the cormorant population. He recommends: maintaining the buffer structure of the population, to intervene only indirect by reducing capacities, and if that should not be possible, through careful intervention by shooting, in order to keep the structure of the population.

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Contact: Tilo Arnhold presse@ufz.de 49-341-235-1635 Helmholtz Association of German Research Centres Source:Eurekalert

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