Conservación de aves en bosques mediterráneos fragmentados de España: efectos de la situación geográfica, el hábitat y la degradación del paisaje.

The effects of habitat fragmentation on forest bird assemblages were analysed in 214 holm oak (Quercus ilex) remnants spread across the northern and southern plateaux of central Spain. Bird richness was highly dependent on fragment area for all species regardless of isolation, and barely affected by habitat traits. Geographical location was associated with high differences in richness of bird assemblages, which included 17 species exclusive to northern remnants and one exclusive to southern remnants. This supports the hypothesis that habitat suitability deteriorates sharply from north to south for forest birds in Spain. The species-area relationships of bird assemblages sampled in fragmented forests along a broad continental gradient (from Norway to southern Spain) showed that true forest birds only nest in woodlands >100 ha in southern Spain, whereas the full complement of forest species occurs in much smaller fragments in central-western Europe. Loss of species that are particularly sensitive to habitat fragmentation accounts for these differences between dry Spanish and mesic European woodlands. These results are explained by the low habitat suitability of Spanish woodlands, associated with the restrictive conditions for plant regeneration in the Mediterranean climate and long-standing human usage. There is, therefore, a particular need to develop management strategies that conserve birds, and probably other forest organisms, in Mediterranean regions by preventing habitat deterioration and decreases in fragment size, and by conserving all woods >100 ha.

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Resource type Text
Date of creation 2024-06-18
Date of last revision 2024-09-17
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Metadata identifier e8e23dc8-4625-5852-8fad-cf3add817e13
Metadata language Spanish
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ISO 19115 topic category biota
Other identifier 10.1016/S0006-3207(01)00210-5
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INSPIRE identifier ESPMITECOIEPNBFRAGM246
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Geographic identifier Spain
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"{\"type\": \"Polygon\", \"coordinates\": [[[-18.16, 27.64], [4.32, 27.64], [4.32, 43.79], [-18.16, 43.79], [-18.16, 27.64]]]}"
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  1. Biological Conservation. Vol. 105
  2. Num. 1
  3. pags. 113-125
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Name of the dataset creator Santos, T., Tellería, J.L. y Carbonell, R.
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