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Large scale risk-assessment of wind-farms on population viability of a globally endangered long-lived raptor
Sanitary versus environmental policies: fitting together two pieces of the puzzle of European vulture conservation.
Summary 1. Between 1996 and 2000 the appearance of bovine spongiform encephalopathy swiftly became one of the most serious public health and political crises concerning food safety ever experienced…
Habitat, human pressure, and social behavior: Partialling out factors affecting large-scale territory extinction in an endangered vulture
Causes of death in different areas for Bonelli's Eagle Hieraaetus fasciatus in Spain
The Spanish Bonelli's Eagle populations have decreased markedly because of high mortality, and a log-linear model showed that these differences were associated with a difference in the spatial distribution of age classes, rather than to age or experience per se.
Components of breeding performance in two competing species: habitat heterogeneity, individual quality and density‐dependence
- M. Carrete, J. A. Sánchez‐Zapata, J. Tella, J. M. Gil-Sánchez, M. Moléon
- Environmental Science
- 1 March 2006
Assessing the relative contribution of habitat heterogeneity and bird quality (in terms of age) on the productivity of sympatric golden Aquila chrysaetos and Bonelli's eagles Hieraaetus fasciatus found temporal changes in bird quality combined with intra- and interspecific competition explained variability in territory productivity rather than habitat heterogeneity among territories per se.
Raptor distribution in relation to landscape composition in semi‐arid Mediterranean habitats
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…
Demography and habitat availability in territorial occupancy of two competing species
The improvement of territorial bird survival and productivity are the most urgently needed actions to be undertaken in the case of the golden eagle, while for Bonelli's eagle efforts should be focused on improving territorial and non-territorial bird survival.
From regional to global patterns in vertebrate scavenger communities subsidized by big game hunting
The general structure of scavenger communities described here provides a benchmark for comparisons of subsidized and non-subsidized communities to efficiently preserve biodiversity, and the associated ecological functions and services, in increasingly subsidized ecosystems.
Desert locust outbreaks in the Sahel: resource competition, predation and ecological effects of pest control
- J. A. Sánchez‐Zapata, J. Donázar, A. Delgado, M. Forero, O. Ceballos, F. Hiraldo
- Environmental Science
- 1 April 2007
The results suggest low resource competition with the main human resources in regions with little agricultural development and raise questions about the need for spraying locust swarms in areas where economic losses are scant and wintering populations of European trans-Saharan migrant birds are high.
Factors influencing the decline of a Bonelli's eagle Hieraaetus fasciatus population in southeastern Spain: demography, habitat or competition?
- M. Carrete, J. A. Sánchez‐Zapata, J. Martínez, Miguel Sánchez, J. Calvo
- Environmental ScienceBiodiversity & Conservation
- 1 June 2002
We investigated three possible causes of territory desertion among Bonelli's eagles Hieraaetus fasciatus in Murcia (southeastern Spain): low demographic parameters, low habitat quality and…