Spatial distribution models in a frugivorous carnivore, the stone marten (Martes foina): is the fleshy-fruit availability a useful predictor?

作者: Sara Cabezas-Díaz , Emilio Virgós , Jorge Lozano , Julián Mangas

DOI: 10.1163/157075610X523297

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摘要: Fleshy-fruit availability is rarely used as a predictor in stone marten ( Martes foina ) habitat models, despite its frugivorous carnivore diet. Data on occurrence, structure and fl eshy-fruit species abundance was collected along 2 km long survey routes within x sample plots (n = 30). Two different spatial scales were considered: 1) the entire route; 2) 200 m segments each route. analyses included Poisson General Linear Models (GLM) Generalized Mixed (GLMM) for fi rst second approaches, respectively. Strawberry tree Arbutus unedo signifi cantly positively correlated to occurrence at both scales, particularly large-scale model. At larger scale, lower correlation traditional variables observed. Tree cover most important variable small-scale model, but strawberry also an predictor. Stone low areas of high absence trees; emphasising prominent role trees per se martens. Our results indicated that including ne, eld-derived estimates key food resources can increase utility models. © Koninklijke Brill NV, Leiden, 2010.

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