|
|
Article: Factors affecting the observed densities of ringed seals, Phoca hispida, in the Alaskan Beaufort Sea, 1996-99.
- Article from:
- Arctic
- Article date:
- June 1, 2004
- Author:
CopyrightCOPYRIGHT 2004 Arctic Institute of North America of the University of Calgary. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
|
ABSTRACT. Aerial surveys were conducted during late May and early June 1996-99 in the central Beaufort Sea of Alaska, using strip-transect methods. The purpose of these surveys was to quantify and model the effects of environmental covariates on ringed seal counts and to provide density estimates that would be useful for evaluating trends in seal abundance. Total survey effort included 40-88 transect lines per year covering 1198-2701 [km.sup.2]. Observed densities ranged from 0.81 seals/[km.sup.2] in 1996 to 1.17 seals/[km.sup.2] in 1999. We examined the effects of habitat, weather, and time of day on observed seal densities, using univariate chi-square goodness-of-fit ...
Related newspaper, magazine, and journal articles:
|
|
Article: Offshore distances of bowhead whales (Balaena mysticetus) ...
Arctic;
March 1, 2006 ;
700+ words
... ... Balaena mysticetus, Beaufort Sea, bowhead whales ... Balaena mysticetus) de la mer de Beaufort alaskienne ... plausible a la source de la tendance qui a ete ... la disponibilite de la nourriture peuvent ... of sea ice in the Beaufort Sea and its effect on ...
|
|