Title
Habitat associations within a raptor community in a protected area in Northwest Peru
Date Issued
01 June 2015
Access level
open access
Resource Type
journal article
Author(s)
Manchester Metropolitan University
Publisher(s)
Ornithological Societies of North America
Abstract
Knowledge of the habitat characteristics that influence the distribution of raptors in the neotropics is vital for their conservation. I used logistic regressions (General Linear Models; GLM) to model habitat distribution for eleven raptor species occurring in the Cerros de Amotape National Park, the Tumbes National Reserve, and surrounding areas in northwestern Peru. Between May and December 2008 and 2009, raptors were surveyed along transects, and associated habitat data collected in 70 randomly allocated 1-km2 plots. Ten habitat variables were selected for modelling. Spatial autocorrelation in the distribution of species was measured through Moran's I and later habitat models were ranked using Akaike's Information Criterion corrected for small sample sizes (AICc). The most important variables that influenced the presence of species included the percentage of vegetation cover at different strata and elevation. The presence of the tree species, ceibo (Ceiba trichistrandra) and guasima (Guazuma ulmifolia), were also important. The percentage of vegetation cover from 5-15 m appeared in all models for Turkey Vulture (Cathartes aura), Crane Hawk (Geranospiza caerulescens), Great Black Hawk (Buteogallus urubitinga), and Harris's Hawk (Parabuteo unicinctus). These findings suggest that vertical structure of forested areas is of particular importance for raptors at the study site, including those of conservation concern. I recommend that forested areas north of the Cerros de Amotape National Park and close to Ecuador should be protected.
Start page
174
End page
182
Volume
49
Issue
2
Language
English
OCDE Knowledge area
Ciencias del medio ambiente Ecología
Scopus EID
2-s2.0-84930247021
Source
Journal of Raptor Research
ISSN of the container
08921016
Sources of information: Directorio de Producción Científica Scopus