1887

oa African Zoology - Population increase in the Amsterdam Island fur seal Arctocephalus tropicalis at Gough Island

Volume 15, Issue 4
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X

 

Abstract

Population size of Arctocephalus tropicalis on Gough Island was determined by direct censuses of parts of the coast during the summers of 1974 - 1976 and 1977 - 1978 and correction factors for undercounting and seasonal cycles were applied. Present population size is approximately 200000, giving an intrinsic rate of increase of 15,9% per year since 1955/56, but is now approaching the negative acceleration phase in population growth as a result of optimal breeding space becoming limited. An extension of breeding colony sites has also occurred since 1955.

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/content/afzoo/15/4/AJA00445096_1170
1980-10-01
2019-12-05

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