Although mammalian carnivores are vulnerable to habitat fragmentation and require landscape connectivity, their global patterns of fragmentation and connectivity have not been examined. We use recently developed high-resolution habitat suitability models to conduct comparative analyses and to identify global hotspots of fragmentation and connectivity for the world's terrestrial carnivores. Species with less fragmentation (i.e. more interior high-quality habitat) had larger geographical ranges, a greater proportion of habitat within their range, greater habitat connectivity and a lower risk of extinction. Species with higher connectivity (i.e. less habitat isolation) also had a greater proportion of high-quality habitat, but had smaller, not larger, ranges, probably reflecting shorter distances between habitat patches for species with restricted distributions; such species were also more threatened, as would be expected given the negative relationship between range size and extinction risk. Fragmentation and connectivity did not differ among Carnivora families, and body mass was associated with connectivity but not fragmentation. On average, only 54.3 per cent of a species' geographical range comprised high-quality habitat, and more troubling, only 5.2 per cent of the range comprised such habitat within protected areas. Identification of global hotspots of fragmentation and connectivity will help guide strategic priorities for carnivore conservation.

Global patterns of fragmentation and connectivity of mammalian carnivore habitat / Crooks, Kevin R.; Burdett, Christofer L.; Theobald, David M.; Rondinini, Carlo; Boitani, Luigi. - In: PHILOSOPHICAL TRANSACTIONS - ROYAL SOCIETY. BIOLOGICAL SCIENCES. - ISSN 0962-8436. - STAMPA. - 366:1578(2011), pp. 2642-2651. [10.1098/rstb.2011.0120]

Global patterns of fragmentation and connectivity of mammalian carnivore habitat

RONDININI, CARLO;BOITANI, Luigi
2011

Abstract

Although mammalian carnivores are vulnerable to habitat fragmentation and require landscape connectivity, their global patterns of fragmentation and connectivity have not been examined. We use recently developed high-resolution habitat suitability models to conduct comparative analyses and to identify global hotspots of fragmentation and connectivity for the world's terrestrial carnivores. Species with less fragmentation (i.e. more interior high-quality habitat) had larger geographical ranges, a greater proportion of habitat within their range, greater habitat connectivity and a lower risk of extinction. Species with higher connectivity (i.e. less habitat isolation) also had a greater proportion of high-quality habitat, but had smaller, not larger, ranges, probably reflecting shorter distances between habitat patches for species with restricted distributions; such species were also more threatened, as would be expected given the negative relationship between range size and extinction risk. Fragmentation and connectivity did not differ among Carnivora families, and body mass was associated with connectivity but not fragmentation. On average, only 54.3 per cent of a species' geographical range comprised high-quality habitat, and more troubling, only 5.2 per cent of the range comprised such habitat within protected areas. Identification of global hotspots of fragmentation and connectivity will help guide strategic priorities for carnivore conservation.
2011
connectivity, conservation, habitat fragmentation, habitat models, mammalian carnivore
01 Pubblicazione su rivista::01a Articolo in rivista
Global patterns of fragmentation and connectivity of mammalian carnivore habitat / Crooks, Kevin R.; Burdett, Christofer L.; Theobald, David M.; Rondinini, Carlo; Boitani, Luigi. - In: PHILOSOPHICAL TRANSACTIONS - ROYAL SOCIETY. BIOLOGICAL SCIENCES. - ISSN 0962-8436. - STAMPA. - 366:1578(2011), pp. 2642-2651. [10.1098/rstb.2011.0120]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/363025
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