Ja. Sanchez-zapata et Jf. Calvo, Raptor distribution in relation to landscape composition in semi-arid Mediterranean habitats, J APPL ECOL, 36(2), 1999, pp. 254-262
1. Breeding sites of raptors were studied in relation to land-use and edge
habitat using two different scales in semi-arid Mediterranean landscapes in
south-eastern Spain. Habitat relationships were analysed using Generalized
Linear Models.
2. The proportion of forest cover at a small scale was the best predictor f
or all species. At a larger scale, the proportion of forest cover was also
a good predictor, and the amount of edge habitat between forest and extensi
ve agriculture was a very good predictor of booted and short-toed eagle den
sities.
3. Models for sedentary species of raptor were similar using both scales wh
ereas trans-Saharan migrant raptors seemed to be more sensitive to larger l
andscape features that included longer edges between forest and extensive a
griculture,
4. Habitat mosaics created by forestry and traditional farming were especia
lly important for Mediterranean raptors. Strengthening of the Agri-environm
ental Regulation (2078/92) will be necessary to compensate for agricultural
intensification proposals promoted under the Common Agricultural Policy (C
AP).