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Your search keyword '"Amstrup, Steven C."' showing total 6 results
Start Over Author "Amstrup, Steven C." Publisher arctic institute of north america of the university of calgary
6 results on '"Amstrup, Steven C."'

1. Mapping polar bear maternal denning habitat in the National Petroleum Reserve--Alaska with an IfSAR digital terrain model

Author

Durner, George M., Simac, Kristin, and Amstrup, Steven C.

Subjects
United States. Geological Survey -- Analysis, Intermap Technologies Corp., Polar bear -- Analysis, Computer software industry -- Analysis, Petroleum -- Reserves, Earth sciences, Regional focus/area studies
Abstract

ABSTRACT. The National Petroleum Reserve--Alaska (NPR-A) in northeastern Alaska provides winter maternal denning habitat for polar bears (Ursus maritimus) and also has high potential for recoverable hydrocarbons. Denning polar bears [...]

Published
2013

2. Post-den emergence behavior of polar bears (Ursus maritimus) in northern Alaska

Author

Smith, Tom S., Partridge, Steven T., Amstrup, Steven C., and Schliebe, Scott

Subjects
Polar bear -- Observations -- Behavior, Earth sciences, Regional focus/area studies, Observations, Behavior
Abstract

ABSTRACT. We observed polar bear (Ursus maritimus) maternity den sites on Alaska's North Slope in March 2002 and 2003 in an effort to describe bears' post-den emergence behavior. During 40 [...]

Published
2007

3. Polar bear maternal den habitat in the Arctic National Wildlife Refuge, Alaska

Author

Durner, George M., Amstrup, Steven C., and Ambrosius, Ken J.

Subjects
Polar bear -- Behavior -- Research, Animal populations -- Research -- Behavior, Parental behavior in animals -- Research -- Behavior, Earth sciences, Regional focus/area studies, Research, Behavior
Abstract

ABSTRACT. Polar bears (Ursus maritimus) give birth during mid-winter in dens of ice and snow. Denning polar bears subjected to human disturbances may abandon dens before their altricial young can [...]

Published
2006

4. Habitat characteristics of polar bear terrestrial maternal den sites in northern Alaska

Author

Durner, George M., Amstrup, Steven C., and Fischbach, Anthony S.

Subjects
Habitat selection -- Environmental aspects -- Behavior, Polar bear -- Environmental aspects -- Behavior, Earth sciences, Regional focus/area studies, Behavior, Environmental aspects
Abstract

ABSTRACT. Polar bears (Ursus maritimus) give birth to and nurture their young in dens of ice and snow. During 1999-2001, we measured the structure of 22 dens on the coastal [...]

Published
2003

5. Remote Identification of Polar Bear Maternal Den Habitat in Northern Alaska

Author

DURNER, GEORGE M., AMSTRUP, STEVEN C., and AMBROSIUS, KEN J.

Subjects
Breeding -- Environmental aspects, Polar bear -- Environmental aspects, Habitat (Ecology) -- Environmental aspects, Earth sciences, Regional focus/area studies, Environmental aspects
Abstract

GEORGE M. DURNER [1] STEVEN C. AMSTRUP [1] KEN J. AMBROSIUS [2] (Received 1 February 2000; accepted in revised form 30 August 2000) ABSTRACT. Polar bears (Ursus maritimus) give birth [...]

Published
2001

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