作者: Oyvind Bakke , Svein-Hakon Lorentsen
DOI: 10.1111/J.0006-341X.1999.00321.X
关键词:
摘要: We propose a procedure for maximum likelihood estimation of the number animals or offspring in closed population where individuals counted go through stages age-groups. Application requires knowledge distributions stage durations. A those based on marked is also given. The procedures are illustrated by applying them to gray seal (Halichoerus grypus) data from Froan Nature Reserve, Central Norway, breeding seasons 1990-1999.