Management of bald eagle communal roosts in fire-adapted mixed-conifer forests
Article Abstract:
Mixed-conifer forests in the Bear Valley National Wildlife Refuge, OR, are important roost sites for some over-wintering bald eagles, but past fire suppression and logging activities have caused a decline in the roost environment. A new study examines the use of roosting sites by bald eagles with reference to the attributes of roosting trees, vegetation surrounding roost trees and characteristics of subroosts. Results suggest that roost suitability in the refuge is declining because of shifts in tree composition. Recommendations for improving roost composition include prescribed fire, seeding with roost trees and limited thinning.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1998
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Estimation of animal abundance when capture probabilities are low and heterogeneous
Article Abstract:
The reliability of jackknife estimators in determining the population of animals with low-capture probabilities is investigated using capture-recapture data on Oregon's northern flying squirrel. The evaluated estimators include the jackknife estimator selection method, the higher-order jackknife estimator and the moment estimator. In addition, Monte Carlo simulations were performed. They verified the obtained estimates with empirical data collected from the field.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1995
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Movements of northern flying squirrels in different-aged forest stands of western Oregon
Article Abstract:
Research undertaken in the central Oregon Cascades in the Willamette National Forest near Blue River and McKenzie Bridge, OR, into movements of northern flying squirrels indicates that male flying squirrels use larger home ranges than females. However, movements between successive locations did not differ between male and female flying squirrels. Stand type did not affect home range size or flying squirrel movements between successive locations.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1999
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- Abstracts: Mangroves enhance the biomass of coral reef fish communities in the Caribbean. A bird's eye view of the health of coral reefs
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