Northern Rocky Mountain Science Center

Publications

Below is a list of available NOROCK peer reviewed and published science. If you are in search of a specific publication and cannot find it below or through a search, please contact twojtowicz@usgs.gov.

Filter Total Items: 1,011
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Year Published: 2003

Winter diel habitat use and movement by subadult bull trout in the upper Flathead River, Montana

We evaluated the diel habitat use and movement of subadult bull trout Salvelinus confluentus by use of radiotelemetry during winter in the upper Flathead River, Montana. Of the 13 monitored bull trout, 12 (92%) made at least one diel movement to other habitat locations during their respective day–night tracking surveys and moved an...

Muhlfeld, Clint C.; Glutting, Steve; Hunt, Rick; Daniels, Durae; Marotz, Brian

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Year Published: 2003

Modeling means in latent variable models of natural selection

No abstract available.

Pugesek, Bruce H.; Tomer, Adrian; von Eye, Alexander; Pugesek, Bruce H.

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Year Published: 2003

Quaternary geology and ecology of the Greater Yellowstone area

This field guide focuses on the glacial geology, ecology, paleoecology, caldera unrest, and archeology in Yellowstone and Grand Teton national parks and vicinity (Fig. 1). Some previous field guides of Yellowstone are Locke et al. (1995) for the Yellowstone valley, Fournier et al. (1994) for hydrothermal and volcanic geology of Yellowstone, and...

Pierce, Kenneth L.; Despain, Don G.; Whitlock, Cathy; Cannon, Kenneth P.; Meyer, Grant A.; Morgan, Lisa; Licciardi, Joseph M.

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Year Published: 2003

Concepts of structural equation modeling in biological research

No abstract available.

Pugesek, Bruce H.; Tomer, Adrian; von Eye, Alexander; Pugesek, Bruce H.

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Year Published: 2003

Endangered toads in the Rockies

The western toad species complex, endemic to western North America, includes two montane species that have undergone extensive declines. These are the Yosemite toad, Bufo canorus, in the Sierra Nevada, and the southern Rocky Mountain populations of the boreal toad, B. borea. Most declines in the Rockies appear to have occurred before 1980, but a...

Taylor, Leslie; Martin, Kathy; Hik, David; Ryall, Anne; Corn, Paul Stephen

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Year Published: 2003

Creation of the Teton landscape: A geologic chronicle of Jackson Hole and The Teton Range

Geology is the science of the Earth-the study of the forces, processes, and past life that not only shape our land but influence our daily lives and our Nation's welfare. This booklet, prepared by two members of the U.S. Geological Survey, discusses how geologic phenomena are responsible for the magnificent scenery of the Teton region

Reed, John Calvin; Love, David; Pierce, Kenneth

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Year Published: 2003

Coupling ice-sheet and climate models for simulation of former ice sheets

This chapter explores the development of coupled climate and ice-sheet models over the past two decades, discusses the current technical and physical capabilities of models, and identifies future work for developing a better understanding of ice-climate events that have punctuated Earth history. The chapter also illustrates the complex behavior of...

Marshall, Shawn J.; Pollard, David; Hostetler, Steven W.; Clark, Peter U.

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Year Published: 2003

Reproductive maturation and senescence in the female brown bear

Changes in age-specific reproductive rates can have important implications for managing populations, but the number of female brown (grizzly) bears (Ursus arctos) observed in any one study is usually inadequate to quantify such patterns, especially for older females and in hunted areas. We examined patterns of reproductive maturation and...

Schwartz, Charles C.; Keating, Kim A.; Reynolds III, Harry V.; Barnes, Victor G.; Sellers, Richard A.; Swenson, J. E.; Miller, Sterling D.; McLellan, B. N.; Keay, Jeffrey A.; McCann, Robert; Gibeau, Michael; Wakkinen, Wayne F.; Mace, Richard D.; Kasworm, Wayne; Smith, Rodger; Herrero, Steven

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Year Published: 2003

Modeling paleoclimates

Paleoclimatic data and climate models play a complimentary role in understanding climate change. This chapter provides an overview of the process of climate-system modeling, presents the taxonomy of the models recently applied in the study of Quaternary climate change and variation, and discusses the development of climate modeling since the 1965...

Bartlein, Patrick J; Hostetler, Steven W.

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Year Published: 2003

Predicting rare plant occurrence in Great Smoky Mountains National Park, USA

We investigated the applicability of biometric habitat modeling to rare plant inventory and conservation by developing and field testing a geographically explicit model for Cardamine clematitis Shuttleworth ex A. Gray (mountain bittercress), an endemic plant of the southern Blue Ridge Mountains, USA. For each of 187 confirmed coordinates for C....

Boetsch, J.R.; van Manen, Frank T.; Clark, Joseph D.

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Year Published: 2003

Pleistocene glaciations of the Rocky Mountains

This chapter presents the status of Rocky Mountain glacial studies in 1965 and progress from that time to the present. The Rocky Mountains and the adjacent Basin and Range of the United States consist of about 100 ranges distributed in a northwest trending belt 2,000 km long and 200–800 km wide. In 1965, Rocky Mountain glacial subdivisions and...

Pierce, Kenneth L.

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Year Published: 2003

Grizzly bear Ursus arctos

No abstract available.

Schwartz, C.C.; Miller, S.D.; Haroldson, M.A.