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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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Wildlife toxicology of organophosphorus and carbamate pesticides Wildlife toxicology of organophosphorus and carbamate pesticides
No abstract available.
Authors
Elwood F. Hill
Wolf population dynamics Wolf population dynamics
A large, dark wolf poked his nose out of the pines in Yellowstone National Park as he thrust a broad foot deep into the snow and plowed ahead. Soon a second animal appeared, then another, and a fourth. A few minutes later, a pack of thirteen lanky wolves had filed out of the pines and onto the open hillside. Wolf packs are the main social units of a wolf population. As numbers of wolves...
Authors
Todd K. Fuller, L. David Mech, Jean Fitts Cochrane
Wolf social ecology Wolf social ecology
The first real beginning to our understanding of wolf social ecology came from wolf 2204 on 23 May 1972. State depredation control trapper Lawrence Waino, of Duluth, Minnesota, had caught this female wolf 112 km (67 mi) south of where L. D. Mech had radio-collared her in the Superior National Forest 2 years earlier. A young lone wolf, nomadic over 100 km2 (40 mi2) during the 9 months...
Authors
L. David Mech, Luigi Boitani
Wolf-prey relations Wolf-prey relations
As I (L.D. MECH) watched from a small ski plane while fifteen wolves surrounded a moose on snowy Isle Royale, I had no idea this encounter would typify observations I would make during 40 more years of studying wolf-prey relations. My usual routine while observing wolves hunting was to have my pilot keep circling broadly over the scene so I could watch the wolves’ attacks without...
Authors
L. David Mech, Rolf O. Peterson
Platinum-group element mineralization in the Stillwater Complex, Montana Platinum-group element mineralization in the Stillwater Complex, Montana
No abstract available.
Authors
Michael L. Zientek, Roger W. Cooper, Sam R. Corson, E. P. Geraghty
Water depth tolerances of dominant tree island species: What do we know? Water depth tolerances of dominant tree island species: What do we know?
Common woody species growing on tree islands in the Water Conservation Areas of South Florida include redbay, sweetbay, coastal-plain willow, wax myrtle, dahoon holly, cocoplum, pond-apple, red maple, cypress, gumbo-limbo, strangler fig and buttonbush. Very little is known about the flooding tolerance of most of these species. In this paper, we review flooding impact studies, describe...
Authors
William H. Conner, Thomas W. Doyle, Daniel Mason
Mangrove ecology Mangrove ecology
No abstract available.
Authors
Philippe Hensel, E. Proffitt, P. Delgado
The development of a decision support system for prioritizing forested wetland restoration areas in the lower Yazoo River basin, Mississippi The development of a decision support system for prioritizing forested wetland restoration areas in the lower Yazoo River basin, Mississippi
No abstract available.
Authors
Angela A. Davis, Barbara A. Kleiss, Charles G. O'Hara, Jennifer S. Derby
Geologic information for aggregate resource planning Geologic information for aggregate resource planning
Construction and maintenance of the infrastructure is dependent on such raw materials as aggregate (crushed stone, sand, and gravel). Despite this dependence, urban expansion often works to the detriment of the production of those essential raw materials. The failure to plan for the protection and extraction of aggregate resources often results in increased consumer cost, environmental...
Authors
William H. Langer, David A. Lindsey, Daniel H. Knepper
Design and performance of limestone drains to increase pH and remove metals from acidic mine drainage, Chapter 2 Design and performance of limestone drains to increase pH and remove metals from acidic mine drainage, Chapter 2
Data on the construction characteristics and the composition of influent and effluent at 13 underground, limestone-filled drains in Pennsylvania and Maryland are reported to evaluate the design and performance of limestone drains for the attenuation of acidity and dissolved metals in acidic mine drainage. On the basis of the initial mass of limestone, dimensions of the drains, and...
Authors
Charles A. Cravotta, George R. Watzlaf
Pliocene to middle Pleistocene lakes in the western Great Basin: Ages and connections Pliocene to middle Pleistocene lakes in the western Great Basin: Ages and connections
No abstract available.
Authors
Marith C. Reheis, Andrei M. Sarna-Wojcicki, Richard L. Reynolds, C. A. Repenning, Martin D. Mifflin