RT Journal Article
T1 Habitat de caza y nidificacion del aguilucho cenizo circus pygargus en el parque natural de la mata-torrevieja (Alicante, se de España): 												Efectos de la estructura de la vegetacion y de la densidad de presas
T2 Breeding and hunting habitat of the Montagu's Harrier Circus pygargus in La Mata-Torrevieja Natural Park (Alicante, SE of Spain)Effects of habitat structure and prey density
A1 Martínez, José Antonio
A1 López, Germán
A1 Falcó, Fernando
A1 Campo, Ana
A1 De La Vega, Alejandro
AB We studied hunting and breeding habitat selection of the Montagu's Harrier in the Parque Natural de las Lagunas de la Mata-Torrevieja (Alicante) in 1997. We calculated the Ivlev´s selection index for every habitat type available in the study area from the time spent by Harriers hunting in each habitat type. The selection index was positive for the natural habitat types of the area and negative for man-made habitats (Fig. 1). Prey density varied between habitats (Table 1), but we did not find any correlation between the amount of time spent by Harriers hunting and prey densities across habitats. We suggest that habitat structure would be more important than relative prey abundance in the choice of hunting grounds. For instance, although prey density peaked in lemon groves, a man-made habitat that has replaced large areas of natural vegetation, prey availability in this habitat was surely very low for Harriers due to the dense canopy of lemon tree cultivation. Logistic regression models showed that the presence of salt marshes with sparse reedbeds increased the probability of finding a Montagu´s Harrier nest, while the development of unpaved roads reduced that probability (Table 2). Reduction of the natural habitat types and increasing human presence will then have negative effects on both the hunting and breeding habitats of the Montagu's Harrier.
SN 0570-7358
YR 1999
FD 1999-12
LK https://hdl.handle.net/11556/3735
UL https://hdl.handle.net/11556/3735
LA spa
NO Martínez , J A , López , G , Falcó , F , Campo , A & De La Vega , A 1999 , ' Habitat de caza y nidificacion del aguilucho cenizo circus pygargus en el parque natural de la mata-torrevieja (Alicante, se de España) : Efectos de la estructura de la vegetacion y de la densidad de presas ' , Ardeola , vol. 46 , N.º 2 , pp. 205-212 .
NO Publisher Copyright: © 1999 SEO/ Birdlife. All rights reserved.
DS TECNALIA Publications
RD 31 jul 2024