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Description: |
17 pages : illustrations ; 28 cm. |
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Bibliography Note: |
Includes bibliographical references (page 17). |
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Contents Note: |
Contents: Introduction -- Estimating muskrat populations -- The annual house count as an index to muskrat population -- Types of structures involved. Nesting or dwelling houses ; Feeding huts of shelters ; Push-up or breather ; Bank leads and den burrows ; Temporary and semi-permanent retreats -- Census methods. Transcripts ; Counts from roadside ; Ground "strip" counts ; Aerial census -- Normal range and movements -- Number of animals per house -- Conversion factor -- Relation to regulatory trapping laws -- Summary. |
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Elect. Loc./Access: |
ARLIS Document Server https://www.arlis.org/docs/vol1/AK_Heritage/FWS/WL/3/WL-306.pdf |