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Keyword: Fisher

Mixed-severity wildfire and salvage logging affect the populations of a forest-dependent carnivoran and a competitor

Publications Posted on: May 05, 2022
Effects of historical fire suppression in forested ecosystems, combined with increasingly frequent and prolonged periods of drought due to a changing climate, are predicted to drive increases in the extent and intensity of wildfires in western North America and elsewhere. Understanding the effects of wildfires on forest-dependent species and interactions among species is important for conservation and management decisions.

Observation and DNA confirmation of a fisher (Pekania pennanti) hunting and killing a muskrat (Ondatra zibethicus)

Publications Posted on: December 11, 2020
Pekania pennanti (Fisher) is a generalist mesocarnivore that has been documented to prey on a diversity of mammals, but there have been no previous documented incidents of a Fisher hunting and killing a semi-aquatic mammal. Here, we report a first-hand observation and DNA evidence of a Fisher hunting and killing an Ondatra zibethicus (Muskrat) from inside a beaver lodge along a lakeshore.

Chapter 1: A conservation assessment framework for forest carnivores.

Publications Posted on: June 22, 2020
Controversy over managing public lands is neither an unexpected nor recent development. In the 1970's, debate over land management began to focus on the effects of timber management practices on wildlife. This was most evident in the Pacific Northwest where the public was beginning to express strong concerns about the effects of timber harvest in late-successional forests on northern spotted owls and other vertebrates.

Occupancy patterns in a reintroduced fisher population during reestablishment

Publications Posted on: June 20, 2020
Monitoring population performance in the years following species reintroductions is key to assessing population restoration success and evaluating assumptions made in planning species restoration programs.

A carnivores’ oasis? An isolated fisher (Pekania pennanti) population provides insight on persistence of a metapopulation

Publications Posted on: June 17, 2020
Landscape level species assessments are rarely available to inform conservation planning. Recent advances in multi-taxa survey techniques, however, have made them more obtainable by improving efficiency of collecting species occurrence data and genetic samples.

Fishers and Martens and Lynx, Oh My! Multiregional, Goal Efficient Monitoring of Mesocarnivores

Pages Posted on: February 19, 2019
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Science You Can Use in 5 Minutes (SYCU) - Fishers and martens and lynx, oh my! Multiregional, goal efficient monitoring of mesocarnivores

Publications Posted on: February 13, 2019
Mesocarnivores, fisher, marten, lynx, wolverine and others, are an important part of forest ecosystems, but they are often difficult to detect, occur in low densities, and have large home ranges. This makes it difficult for biologists to estimate the number of individuals in a specific species in a particular ecosystem.Publication: RMRS-GTR-388

Multispecies mesocarnivore monitoring: USDA Forest Service multiregional monitoring approach

Publications Posted on: December 14, 2018
Small- to mid-sized forest carnivores, also known as mesocarnivores, are an important part of the animal community within national forests.

Here today, here tomorrow: Managing forests for fisher habitat in the northern rockies

Pages Posted on: March 14, 2018
The fisher is a unique member of the weasel family and a sensitive species in the northern Rockies. Forest managers need information on fisher distribution and habitat needs to conserve this species while balancing multiple uses of forest lands and to maintain fisher populations under climate change. Researchers from the Rocky Mountain Research Station (RMRS) matched DNA samples from fishers to habitat features at various scales and found that fishers require large trees and forests with a lot of cover and structure, all nested within a larger forested landscape. Models of fisher habitat in the future under a warming climate suggest that the amount of favorable area is likely to expand and move eastward into the Interior West, but it could become more fragmented. Now and in the future, fisher management will require retention and fostering of mature, complex, mesic forests with a high degree of habitat connectivity.

Effects of climate change on wildlife in the Northern Rockies [Chapter 8]

Publications Posted on: September 22, 2017
Few data exist on the direct effects of climatic variability and change on animal species. Therefore, projected climate change effects must be inferred from what is known about habitat characteristics and the autecology of each species.