Publication: Spatio-temporal variations in mortality causes of two migratory forest raptors in Spain
Authors
Martínez, José E. ; Zuberogoitia, Iñigo ; Jiménez Franco, María V. ; Mañosa, Santi ; Calvo Sendín, José Francisco
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Publisher
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DOI
https://doi.org/10.1007/s10344-015-0981-x
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info:eu-repo/semantics/article
Description
©2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
This document is the Accepted version of a Published Work that appeared in final form in European Journal of Wildlife Research. To access the final edited and published work see https://doi.org/10.1007/s10344-015-0981-x
Abstract
Analysis of the 949 and 434 cases of mortality of
Booted Eagle Aquila pennata and Short-toed Snake Eagle
Circaetus gallicus, respectively, recorded by wildlife rehabil itation centres in Spain over a 16-year period (1990–2006)
shows that power lines (19.5 and 35.2 %, respectively) and
killing (32.5 and 22.9 %, respectively) were the main known
causes of death. Multinomial regression models were used to
analyse geographical and temporal variations in the causes of
death. For the Booted Eagle, both factors (zone and year) were
statistically significant, while there were only significant tem poral variations for the Short-toed Snake Eagle. In the Booted
Eagle, killing occurred more frequently than expected in the
east and north of the country compared to the other Spanish
regions. Power line casualties were significantly more fre quent in the southern and eastern regions, and less common
in the north. In both species, the multinomial models indicate
that while the number of cases of killing significantly de creased during the 16 years studied, power line casualties
increased. Our study suggests that human-induced mortality
continues to be the main factor contributing to mortality for
Spanish Booted Eagles and Short-toed Snake Eagles. Since a reduction in the mortality caused by human activities is a
priority in the conservation strategies for raptor species, man agement guidelines are discussed
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Citation
European Journal of Wildlife Research (2016) 62:109–118
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