Comments to a polar bear population model |
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| Authors: | NILS ARE RITSLAND |
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| Institution: | Nils A. 0ritsland, Norsk Polarinstitutt, Rolfstangveien 12, 1330 Oslo Lufthavn, Norway. Research Note |
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| Abstract: | Larsen, T. & Ugland, K. I. (Polar Research 2 n.s., 117–118) note correctly that a Leslie matrix model treats cubs and females as independent units which is not the case lor polar bears. Population projections using the Leslie model with hunting mortalities added are instructive first approximations in evaluations of field data, however, and are recommended as exercises also for polar bear biologists. An APL programme for such projections is available. |
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