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A large-scale model for the at-sea distribution and abundance of Marbeld Murrelets (Brachyramphus marmoratus) during the breeding season in coastal British Columbia, Canada

TitleA large-scale model for the at-sea distribution and abundance of Marbeld Murrelets (Brachyramphus marmoratus) during the breeding season in coastal British Columbia, Canada
Publication TypeJournal Article
Year of Publication2004
AuthorsYen, PPW, Huettmann, F, Cooke, F
JournalEcological Modeling
Volume171
Pagination395–413
ISSNdoi:10.1016/j.ecolmodel.2003.07.006
Abstract

The role that the marine environment plays in the distribution and abundance of Marbled Murrelets (Brachyramphus marmoratus), a seabird which nests in old-growth forests, is not well understood. Therefore, we investigated how Marbled Murrelet marine distribution and abundance is related to the abiotic and biotic components of the marine environment. Data on the marine distribution of Marbled Murrelets in British Columbia (BC), densities (birds/km2; 1972–1993), counts (number of birds per survey; 1922–1989), and pertinent environmental variables as identified from the literature were compiled and then organized in a Geographic Information System (GIS). On a 10 km scale, count surveys were not correlated with density surveys (r2=0.0

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