Estimation of tundra swan population on Selawik National Wildlife Refuge, 1983-1989: A review of past surveys and testing of the quarter-map method for population trend monitoring and extrapolation
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
US
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Summary
Description
This report summarizes the results of a seven year study to estimate the Tundra Swan population on Selawik National Wildlife Refuge. Seven years of trend surveys, including three Refugewide censuses or surveys are discussed and recommendations for future monitoring efforts are included. The methods used and a discussion of the results are included. Data forms are attached.