Recovery From Reduction: The M’Clintock Channel Polar Bear Subpopulation, Nunavut, Canada

Estimating the Barents Sea polar bear subpopulation size

A large-scale survey was conducted in August 2004 to estimate the size of the Barents Sea polar bear subpopulation. We combined helicopter line transect distance sampling (DS) surveys in most of the survey area with total counts in small areas not suitable for DS. Due to weather constraints we failed to survey some of the areas originally planned to be covered by DS. For those, abundance was es...

Polar Bear Conservation in Canada: Defining the Policy Problems

Conservation of polar bears (Ursus maritimus) in Canada is based on the goals and principles of the 1973 International Agreement on the Conservation of Polar Bears and Their Habitat, and has long been considered an exemplar of science-based wildlife management. However, accelerating social and ecological changes in the Arctic raise questions about the polar bear management regime’s ability to a...

The Stream Cipher Polar Bear

We propose a new stream cipher called “Polar Bear”. It combines constructions used successfully in other situations. The key initialization uses Rijndael, the steady state uses a dynamic table as in RC4 and we guarantee a long period through the use of a linear feedback shiftregister. The efficiency for short messages is better than that of RC4 while for long messages Polar Bear is about a fact...

The Polar Bear — Ursus maritimus

Aspects of the Polar Bear Harvest in the Northwest Territories, Canada

We analyzed the age, sex, and chronology of the polar bear (Ursus maritimus) harvest in the Northwest Territories (NWT) from 197980 to 1989-90. The mean annual harvest during that period was 517 with a current quota of 617. Sex and age information was obtained on approximately 90 % of the total kill. The harvest was selective for males (63 %). The mean age, sex ratio, and age composition varied...