A mark-recapture approach for estimating population size of the endangered ringed seal (Phoca hispida saimensis).

ABSTRACT: Reliable population estimates are fundamental to the conservation of endangered species. We evaluate here the use of photo-identification (photo-ID) and mark-recapture techniques for estimating the population size of the endangered Saimaa ringed seal (Phoca hispida saimensis). Photo-ID data based on the unique pelage patterns of individuals were collected by means of camera traps and boat-based surveys during the molting season in two of the species' main breeding areas, over a period of five years in the Pihlajavesi basin and eight years in the Haukivesi basin. An open model approach provided minimum population estimates for these two basins. The results indicated high survival rates and site fidelity among the adult seals. More accurate estimates can be obtained in the future by increasi

SUBMITTER: Koivuniemi M 

PROVIDER: S-EPMC6430510 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature