Improving conservation strategies of raptors through landscape ecology analysis: The case of the endemic Cuban Black Hawk
Periodo de realización: 1900/01/01 al 2019/01/01
Tipo: Artículo científico
Lugar(es) de estudio: Cuba, Ciego de Ávila, Cuba
Resumen: "1. Raptor species conservation should consider a landscape perspective in order
to include habitat requirements associated to large home ranges around nesting
sites. Landscape analysis can help to better understand raptor habitat requirements
and the degree of tolerance to habitat changes at different scales.
2. We used a landscape ecology perspective to determine the nesting habitat selection
of endemic and endangered Cuban Black Hawk, and using ecological niche
modeling, we obtained the potential distribution of nests to evaluate the effectiveness
of protected areas (PAs) for raptor conservation.
3. Nesting habitat selection was related to breeding success at a landscape scale
using data from 27 different nesting sites during 2012–2013 breeding seasons.
The potential nesting areas distribution was compared with current officially PAs
design in the central region of Cuba.
4. All nests were located in mangrove swamp. Pairs chose nesting sites with low
soil–vegetation moisture and low soil reflectance. At the landscape level, they selected
low shape complexity of patches and few patches of coastal vegetation
around nesting sites which contained similar mangrove patch size and shape. The
potential distribution of nests increased close to the coastline. The model predicted
a suitable narrow area of 556 km2, and the most favorable nesting area
represented 2% of this total. 33% of nests were located within officially natural
protected areas while 27% were close to or inside highly threatened areas. A 16%
of high to medium suitable nesting habitat overlaps with urban areas. Currently,
PAs contain 23% of the nesting area distribution.
5. Our study shows landscape ecology and nest-site selection approach is crucial to
evaluate the persistence of Cuban Black Hawk, as environmental variables and
human activity can be related to its productivity. This approach can be applied in
conservation strategies of island raptors."