Crecimiento poblacional teórico del lobo fino antártico (Arctocephalus gazella) en la isla Livingston, Shetland del Sur

Abstract

Considering data from census reports and average figures of previous mortality and pregnancy rates, a demographic matrix was prepared to estimate the population growth of Arctocephalus gazella at Livingston island, South Shetland. According to this model a stable population structure was reached six years after the re-colonization. From this point, the annual growth rate would be 21°/o in contrast with the population at South Georgia that shows a lower rate. Probably, figures for the antarctic fur seal at South Shetland are underestimated due critically short period for census work.