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Distribution, abundance and habitat associations of beavers, muskrats, mink and river otters in the AOSERP study area, Northeastern Alberta

  • Author(s) / Creator(s)
  • A synthesis of the published literature on the habitat preferences of beavers, muskrats, mink and river otters is presented. Field studies conducted during the late autumn of 1978 included aerial surveys and track counts in snow. A total of 249 active beaver lodges were seen on 2550 km of transects. Densities of active beaver lodges were calculated from surveys of streams and lakes to be lodge per 3.1 km of stream and 1 lodge per 7.2 km of lakeshore. A total of 26 muskrat houses were seen on three lakes within the AOSERP study area. The Peace-Athabasca Delta was not surveyed. Beavers used deciduous, white spruce and willow-fen habitats proportionately more than these habitats were available. Beavers avoided locating their lodges in jack pine and black spruce-tamarack habitats. Tracks of mink were found to occur in greater numbers in willow and aspen vegetation types than would be expected by the availability of these habitats. Habitat preferences of muskrats and river otters could not be determined because too few data were collected on these species. Recommendations for habitat management that would benefit semi-aquatic furbearers are made.

  • Date created
    1979
  • Subjects / Keywords
  • Type of Item
    Report
  • DOI
    https://doi.org/10.7939/R35M62D60
  • License
    This material is provided under educational reproduction permissions included in Alberta Environment and Sustainable Resource Development's Copyright and Disclosure Statement, see terms at http://www.environment.alberta.ca/copyright.html. This Statement requires the following identification: \"The source of the materials is Alberta Environment and Sustainable Resource Development http://www.environment.gov.ab.ca/. The use of these materials by the end user is done without any affiliation with or endorsement by the Government of Alberta. Reliance upon the end user's use of these materials is at the risk of the end user.