Publications
These publications showcase the significant science conducted in our Science Centers.
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Map showing areas with potential for garnet resources in bedrock and placer in the Blacktail Mountains and the Gravelly, Greenhorn, Ruby, and Snowcrest ranges of southwestern Montana Map showing areas with potential for garnet resources in bedrock and placer in the Blacktail Mountains and the Gravelly, Greenhorn, Ruby, and Snowcrest ranges of southwestern Montana
Garnet crystals, some of gem quality, have been sought by rock hounds for many years in the alluvial deposits of the Alder Gulch-Ruby River area. Since 1995, garnet have been extracted from these gravels for industrial products at two separately own placer mines in the region: (1) at Cominco American's "Ruby Garnet" operation at Alder , Montana and (2) at the "Sweetwater Garnet"...
Authors
Bradley S. Van Gosen, Jane M. Hammarstrom, Karl S. Kellogg, Richard B. Berg
A Review of Semivolatile and Volatile Organic Compounds in Highway Runoff and Urban Stormwater A Review of Semivolatile and Volatile Organic Compounds in Highway Runoff and Urban Stormwater
Many studies have been conducted since 1970 to characterize concentrations of semivolatile organic compounds (SVOCs) in highway runoff and urban stormwater. To a lesser extent, studies also have characterized concentrations of volatile organic compounds (VOCs), estimated loads of SVOCs, and assessed potential impacts of these contaminants on receiving streams. This review evaluates the...
Authors
Thomas J. Lopes, Shannon G. Dionne
Mineral resource assessment; Custer and Gallatin national forests, Montana Mineral resource assessment; Custer and Gallatin national forests, Montana
No abstract available.
Authors
Jane Marie Hammarstrom, Anna B. Wilson, Bradley S. Van Gosen, Robert R. Carlson, Dolores M. Kulik, Gregory K. Lee, James E. Elliott, William J. Perry, Edward A. du Bray, Michael L. Zientek
Characterizing a ground water basin in a New England mountain and valley terrain Characterizing a ground water basin in a New England mountain and valley terrain
A ground water basin is defined as the volume of subsurface through which ground water flows from the water table to a specified discharge location. Delineating the topographically defined surface water basin and extending it vertically downward does not always define the ground water basin. Instead, a ground water basin is more appropriately delineated by tracking ground water flowpaths...
Authors
Claire R. Tiedeman, Daniel J. Goode, Paul A. Hsieh
Nonlinear refraction and reflection travel time tomography Nonlinear refraction and reflection travel time tomography
We develop a rapid nonlinear travel time tomography method that simultaneously inverts refraction and reflection travel times on a regular velocity grid. For travel time and ray path calculations, we apply a wave front method employing graph theory. The first-arrival refraction travel times are calculated on the basis of cell velocities, and the later refraction and reflection travel...
Authors
Jiahua Zhang, Uri S. ten Brink, M.N. Toksoz
Gene conservation: management and evolutionary units freshwater bivalve management-introduction to the proceedings Gene conservation: management and evolutionary units freshwater bivalve management-introduction to the proceedings
No abstract available.
Authors
T.L. King, E.C. Pendleton, R.F. Villella
A female black bear denning habitat model using a geographic information system A female black bear denning habitat model using a geographic information system
We used the Mahalanobis distance statistic and a raster geographic information system (GIS) to model potential black bear (Ursus americanus) denning habitat in the Ouachita Mountains of Arkansas. The Mahalanobis distance statistic was used to represent the standard squared distance between sample variates in the GIS database (forest cover type, elevation, slope, aspect, distance to...
Authors
J. D. Clark, S.G. Hayes, J.M. Pledger
Regulation of gill cytosolic corticosteroid receptors in juvenile Atlantic salmon: Interaction effects of growth hormone with prolactand triiodothyronine Regulation of gill cytosolic corticosteroid receptors in juvenile Atlantic salmon: Interaction effects of growth hormone with prolactand triiodothyronine
The potential effects of growth hormone (GH), prolactin (Prl), and triiodothyronine (T3) on gill Na+,K+-ATPase activity and corticosteroid receptor (CR) concentration (Bmax) and dissociation constant (Kd) were examined in juvenile Atlantic salmon (Salmo salar). Compared to controls, fish injected with GH (ovine, 5.0 μg g−1) had significantly greater gill Na+,K+-ATPase activity after 7...
Authors
J. M. Shrimpton, S. D. McCormick
Altitude and configuration of the potentiometric surface in Wallace Township, Chester County, Pennsylvania, February 1996 through June 1997 Altitude and configuration of the potentiometric surface in Wallace Township, Chester County, Pennsylvania, February 1996 through June 1997
No abstract available
Authors
Kenneth S. Eden, Frank M. Schneider
Check-list of North American Birds: the species of birds of North America from the Arctic through Panama, including the West Indies and Hawaiian Islands Check-list of North American Birds: the species of birds of North America from the Arctic through Panama, including the West Indies and Hawaiian Islands
No abstract available.
Authors
Richard C. Banks
Brood sizes of sympatric American black ducks and mallards in Maine Brood sizes of sympatric American black ducks and mallards in Maine
The long-term decline of the American black duck (Anas rubripes) population has been attributed to lower productivity of black ducks that might have been excluded from fertile agricultural wetlands by mallards (Anas platyrhynchos). We monitored broods on 53 wetlands in 1993 and on 58 wetlands in 1994 to determine mean brood sizes of black ducks and mallards in forested and agricultural...
Authors
J. R. Longcore, D.A. Clugston, D.G. McAuley
The seventy-fourth Christmas bird count. 315. Southern Dorchester County, Md The seventy-fourth Christmas bird count. 315. Southern Dorchester County, Md
Because limited information is available regarding preferences for nocturnal habitat during winter, we studied use of nocturnal habitats by American woodcock (Scolopax minor) wintering in the Georgia Piedmont (1994-95). During the evening crepuscular period, woodcock on the wintering grounds move from forested to field habitats, presumably to feed, conduct courtship displays, roost, and...
Authors
C.S. Robbins