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Preliminary analysis of the temporal variability of the alpine ibex population in the Gran Paradiso national park

A. VON HARDENBERG, Bruno BASSANO, Vittorio PERACINO, A. R. JACOBSON, J. VON HARDENBERG & A. PROVENZALE

en Anthropozoologica 31 - Pages 195-204

Published on 01 December 2000

 This article is a part of the thematic issue Animal management and demography through the ages

We study changes in size of the population of Alpine ibex (Capra ibex ibex) in the Gran Paradiso National Park, in the Western Italian Alps, by analysing a long series of censuses conductcd in the past forty years. Spring and fall counts are shown to be strongly correlatcd with each other. Spectral analysis of the ibex abundance data indicate two main oscillations, with approximate periods of 3 and 8 years. Meteorological data suggest that the size of the ibex population is limited by winter snow.


Keywords:

Alpine ibex, Population dynamics, Climatic effects.

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VON HARDENBERG A., BASSANO B., PERACINO V., JACOBSON A. R., VON HARDENBERG J. & PROVENZALE A. 2000. — Preliminary analysis of the temporal variability of the alpine ibex population in the Gran Paradiso national park, in BASSANO B., GIACOBINI G. & PERACINO V. (éds), La gestion démographique des animaux à travers le temps. Actes du VIème colloque international de l'association "L'Homme et l'Animal. Société de Recherche Inter-disciplinaire", Turin, 16-18 septembre 1998. Anthropozoologica 31: 195-204.