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Mission Areas

Ecosystems

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Filter Total Items: 2,932
Year Published: 1994

Identification of kin structure among Guam rail founders: a comparison of pedigrees and DNA profiles

Kin structure among founders can have a significant effect on subsequent population structure. Here we use the correlation between DNA profile similarity and relatedness calculated from pedigrees to test hypotheses regarding kin structure among founders to the captive Guam rail (Rallus owstoni) population. Five different pedigrees were generated...

Haig, Susan M.; Ballou, J.D.; Casna, N.J.
Identification of kin structure among Guam rail founders: a comparison of pedigrees and DNA profiles; 1994; Article; Journal; Molecular Ecology; Haig, Susan M.; Ballou, J. D.; Casna, N. J.

Year Published: 1994

Integrating limnological characteristics of high mountain lakes into the landscape of a natural area

A general conceptual watershed-lake model of the complex interactions among climatic conditions, watershed location and characteristics, lake morphology, and fish predation was used to evaluate limnological characteristics of high mountain lakes. Our main hypothesis was that decreasing elevation in mountainous terrain corresponds to an increase in...

Larson, Gary L.; Wones, A.; McIntire, C.D.; Samora, B.
Integrating limnological characteristics of high mountain lakes into the landscape of a natural area; 1994; Article; Journal; Environmental Management; Larson, Gary L.; Wones, A.; McIntire, C. D.; Samora, B.

Year Published: 1994

Life-history organization of Yellowstone cutthroat trout (Oncorhynchus clarki bouvieri) in Yellowstone Lake

Life-history organization of the cutthroat trout (Oncorhynchus clarki) may be viewed at various levels, including species, subspecies, metapopulation, population, or individual. Each level varies in spatial scale and temporal persistence, and components at each level continually change with changes in environment. Cutthroat trout are widely...

Gresswell, Robert E.; Liss, W.J.; Larson, Gary L.
Life-history organization of Yellowstone cutthroat trout (Oncorhynchus clarki bouvieri) in Yellowstone Lake; 1994; Article; Journal; Canadian Journal of Fisheries and Aquatic Sciences; Gresswell, Robert E.; Liss, W. J.; Larson, Gary L.

Year Published: 1994

Polar bear maternity denning in the Beaufort Sea

The distribution of polar bears (Ursus maritimus) is circumpolar in the NOrthern Hemisphere, but known locations of maternal dens are concentrated in relatively few, widely scattered locations. Denning is either uncommon or unknown within gaps. To understand effects of industrial development and propose increases in hunting, the temporal and...

Amstrup, Steven C.; Gardner, Craig L.
Polar bear maternity denning in the Beaufort Sea; 1994; Article; Journal; Journal of Wildlife Management; Amstrup, S.; Gardner, C.

Year Published: 1994

Predation by dipteran larvae on fairy shrimp (Crustacea: Anostraca) in Utah rock pools

A series of experiments examined how ecological factors affect notonectid foraging success on fairy shrimp. Variation in pond depth over natural ranges had no direct effect on notonectid ability to capture fairy shrimp. Decreases in water clarity over natural ranges led to decreased notonectid ability to capture fairy shrimp. This corresponds with...

Graham, T.B.
Predation by dipteran larvae on fairy shrimp (Crustacea: Anostraca) in Utah rock pools; 1994; Article; Journal; Southwestern Naturalist; Graham, T. B.

Year Published: 1994

Study documents mountain goat impacts at Olympic National Park

Schreiner, Edward G.; Woodward, Andrea
Study documents mountain goat impacts at Olympic National Park; 1994; Article; Journal; Park Science; Schreiner, Edward G.; Woodward, Andrea

Year Published: 1994

Successional theory and the desired plant community approach

Borman, Michael M.; Pyke, David A.
Successional theory and the desired plant community approach; 1994; Article; Journal; Rangelands; Borman, Michael M.; Pyke, David A.

Year Published: 1994

Tundra swan habitat preferences during migration in North Dakota

I studied tundra swan (Cygnus columbianus columbianus) habitat preference in North Dakota during autumn migration, 1988-89. Many thousand tundra swans stop in the Prairie Pothole region during autumn migration, but swan resource use has not been quantified. I examined habitat preference in relation to an index of sago pondweed (Potamogeton...

Earnst, Susan L.
Tundra swan habitat preferences during migration in North Dakota; 1994; Article; Journal; Journal of Wildlife Management; Earnst, Susan L.

Year Published: 1994

Use of mist nets and a live great horned owl to capture breeding American kestrels

http://elibrary.unm.edu/sora/jrr/v028n03/p00194-p00196.pdf

Steenhof, Karen; Carpenter, G.P.; Bednarz, James C.
Use of mist nets and a live great horned owl to capture breeding American kestrels; 1994; Article; Journal; Journal of Raptor Research; Steenhof, Karen; Carpenter, G. P.; Bednarz, James C.

Year Published: 1994

Vertical distribution of a deep-water moss and associated epiphytes in Crater Lake, Oregon

A one-person submersible was used to examine the vertical distribution of the deep-water moss Drepanocladus aduncus (Hedw.) Warnst in Crater Lake (Oregon). Living specimens were found attached to sediment and rocks at depths between 25 m and 140 m. Dense beds of the moss were observed at depths between 30 m and 80 m, a region that corresponded...

McIntire, C.D.; Phinney, H.K.; Larson, Gary L.; Buktenica, M.W.
Vertical distribution of a deep-water moss and associated epiphytes in Crater Lake, Oregon; 1994; Article; Journal; Northwest Science; McIntire, C. D.; Phinney, H. K.; Larson, Gary L.; Buktenica, M. W.

Year Published: 1993

Monitoring data supports hunting closure

No abstract available.

Galipeau, Russell; Jenkins, K.J.; Route, B.

Year Published: 1993

Snaring to control feral pigs sus scrofa in a remote Hawaiian rain forest

Feral pig Sus scrofa control in Kipahulu Valley, a remote rain forest in Haleakala National Park, Maui, Hawaiian Islands, has been achieved with snares over a 45-month period. Initial pig densities in fenced management units of 6·2 km2 and 7·8 km2were estimated at 6 animals/km2 and 14·3 animals/km2 for the two units, based on population...

Anderson, Stephen J.; Stone, Charles P.