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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Wild geese staging in Central and Western Europe: What we know and what we need to know.
Auteurs :	Hans-Heiner Bergmann, Auteur ; Johannes Borbach-Jaene, Auteur ; Axel Degen, Auteur ; Helmut Kruckenberg, Auteur ; Johan H. Mooij, Auteur ; Martin Stock, Auteur ; Volkhard Wille, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (123(6) 2002)
Article en page(s) :	337-344
Résumé :	Several species of wild geese staging in central and western Europe during winter have recently increased or are still increasing in population size, or have reached carrying capacity. Among them, a small number of neozoans are presently not regarded as special problems. The damage geese cause by foraging on agricultural areas is very often overestimated. Many management measures applied appear to be contraproductive or against conservation aims for the geese. Especially, hunting is regarded as disadvantageous as it interferes with the welfare of individual birds or populations without presenting economic help to land owners. Disturbance is a factor mainly of short-term influence. Its effects can be lowered by habituation or other learning if this is not inhibited by hunting. Serious threats to populations are the loss of habitat by drainage of marsh land and development of traffic lines and other artificial structures. Also, set asides in nature reserves could lower the carrying capacity of areas for foraging geese by reducing pasture. Global warmsing could change or reduce breeding areas for arctic breeding geese. Therefore, ongoing monitoring of populations and migration habits will be necessary also in future.

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