| Titre : | Habitat selection of White-backed Woodpecker Dendrocopos leucotos during the breeding season in comparison to Great Spotted Woodpecker Dendrocopos major in mountainous mixed forests of the northern Austrian Chalk Alps. |
| Auteurs : | Georg Frank, Auteur |
| Type de document : | Article |
| Dans : | Vogelwelt (Die) (123(5) 2002) |
| Article en page(s) : | 225-239 |
| Résumé : | In the NATURA 2000 area \"Otscher-Durrenstein\" 69-72 territories of the White-backed Woodpecker were recorded in 43 study plots with a total area of 5,094 hectares, which means an abundance of 1.38 territories/100 ha. The Great Spotted Woodpecker occurred with 75-76 territories (1.48 territories/100 ha). Therefore, in mature mountainous mixed forests, White-backed Woodpecker is one of the commonest woodpecker species. In the primaeval stands of the \"Urwald Rothwald\" it is even the dominant woodpecker whereas the Great Spotted Woodpecker is the rarest woodpecker species. The White-backed Woodpecker shows a relative preference for altitudes between 900 - 1,200 m a.s.l. Strong inclination and a southerly slope are typical for its territories. Most of the territories of the White-backed Woodpecker are located in the middle and upper parts of the slopes. It only inhabits beech-dominated old-growth stands. Due to the preference of lightly closed stands and dependence on a high proportion of dead wood, forests in the state of decay seem to be of high quality for White-backed Woodpecker. Although basically the Great Spotted Woodpecker is a generalist, the niche partition between the two species is sharp. Obviously in favourable habitats White-backed Woodpecker is dominant and Great Spotted Woodpecker is displaced to habitats which can not be used by the former. As we can see in the primaeval stands of the \"Urwald Rothwald\", this distribution scheme is not only the result of anthropogenic influences like forestry. |
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