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Cadernos Lab. Xeolóxico de Laxe Coruña. 2001. Vol. 26, pp. 415-422 ISSN: 0213-4497 A palaeobiological approach to the cave bears from Liñares and Eirós (Galicia, Spain) Una aproximación paleobiológica a los Osos de las Cavernas de Liñares y Eirós (Galicia, España) A B S T R A C T LÓPEZ GONZÁLEZ, F. & GRANDAL d'ANGLADE, A. The sites of Liñares and Eirós are closely situated in the NW of Spain and both contains a large number of Ursus spelaeus remains. However, the chronology of these sites is different and correspond to different climatic conditions. Once considered the effects of the preservational biass in the deposit, the demographic particularities of each population can be explained in terms of the different climatic conditions suffered by the studied cave bear populations. Key words: Cave bear, demography, paleobiology, Galicia Instituto Universitario de Xeoloxía Isidro Parga Pondal. Facultade de Ciencias. Campus da Zapateira s/n. University of A Coruña. E-15071. Galicia. SPAIN
416 LÓPEZ GONZÁLEZ & GRANDAL d’ANGLADE CAD. LAB. XEOL. LAXE 26 (2001) INTRODUCTION The Cave Bear became widely distributed throughout Europe during the Pleistocene The findings are restricted almost exclusively to calcareous areas, and more specifically in karstic cavities which they tended to occupy during hibernation. The westernmost limit of the distribution reach Galicia, in the NW of the Iberian Peninsula, the Eirós Cave (GRANDAL d’ A N G L A D E, 1993), in the Serra de Rañadoiro. The second of the Galician sites considered in this paper, the Liñares Cave, is situated in the Serra do Courel (Figure 1). Figure 1. Geographic situation of the studied sites. The structure of the populations is different in both caves. For the interpretation of this structure, a detailed taphonomic study must be carried out previously in order to avoid the misinterpretation of the data produced by the preservational biass. The taphonomical processes implied in the formation of the deposits differ from one cave to the other, and were described extensively in previous papers ( GRANDAL d’ANGLADE & V I D A L ROMANÍ, 1997; LÓPEZ GONZÁLEZ et al., 1998, GRANDAL d’ANGLADE et al., 2000). They can be summarized as follows: In the deposit of Eirós the bones are
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