Polar Biology

, Volume 25, Issue 2, pp 90–95

Spatio-temporal variation in cat population density in a sub-Antarctic environment

  • Ludovic Say
  • Jean-Michel Gaillard
  • Dominique Pontier
Original Paper

DOI: 10.1007/s003000100316

Cite this article as:
Say, L., Gaillard, J. & Pontier, D. Polar Biol (2002) 25: 90. doi:10.1007/s003000100316

Abstract

We used the walked-line transect method for estimating the density of cats and coefficients of variation of density estimates in 4 contrasted sites on the main island of Îles Kerguelen between 1998 and 2000. Density estimates varied from 0.44±0.15 cats per km2 to 2.42±0.23 cats per km2 according to site and period. Coefficient of variation of density estimates ranged from 11.92% to 34.76%. The line transect method was, therefore, an efficient method for monitoring the density of the cat population in a sub-Antarctic environment characterised by short vegetation. Our results suggest that cat population size at the main island of Îles Kerguelen (the total number of cats expected is around 7,000) is much lower than previously thought.

Copyright information

© Springer-Verlag 2001

Authors and Affiliations

  • Ludovic Say
    • 1
  • Jean-Michel Gaillard
    • 1
  • Dominique Pontier
    • 1
  1. 1.U.M.R. C.N.R.S. no. 5558 "Biométrie et Biologie évolutive", Université Claude Bernard Lyon I, 43, boulevard du 11 novembre 1918, 69622 VilleurbanneFrance