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Page 3626, results 90626 - 90650

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Multiscale sampling of plant diversity: Effects of minimum mapping unit size
Thomas J. Stohlgren, Geneva W. Chong, M. A. Kalkhan, L. D. Schell
1997, Ecological Applications (7) 1064-1074
Only a small portion of any landscape can be sampled for vascular plant diversity because of constraints of cost (salaries, travel time between sites, etc.). Often, the investigator decides to reduce the cost of creating a vegetation map by increasing the minimum mapping unit (MMU), and/or by reducing the number...
Hydrologic conditions and hazards in the Kennicott River Basin, Wrangell-St. Elias National Park and Preserve, Alaska
R. L. Rickman, D. S. Rosenkrans
1997, Water-Resources Investigations Report 96-4296
McCarthy, Alaska, is on the Kennicott River, about 1 mile from the terminus of Kennicott Glacier in the Wrangell-St. Elias National Park and Preserve. Most visitors to McCarthy and the park cross the West Fork Kennicott River using a hand-pulled tram and cross the East Fork Kennicott River on a...
Regional equations for estimation of peak-streamflow frequency for natural basins in Texas
William H. Asquith, Raymond M. Slade Jr.
1997, Water-Resources Investigations Report 96-4307
Peak-streamflow frequency estimates are needed for flood-plain management; for objective assessment of flood risk; and for cost-effective design of dams, levees, other flood-control structures, roads, bridges, and culverts. Peak-streamflow frequency represents the peak discharges for recurrence intervals of 2, 5, 10, 25, 50, and 100 years. The U.S. Geological Survey,...
Woody debris decomposition in the Atchafalaya River Basin of Louisiana following hurricane disturbance
Michael D. Rice, B. Graeme Lockaby, J.A. Stanturf, Bobby D. Keeland
1997, Soil Science Society of America Journal (61) 1264-1274
The contribution of woody debris to some biogeochemical functions of forested wetlands was examined in the Atchafalaya River Basin in Louisiana following disturbance by Hurricane Andrew. Woody debris decomposition processes were characterized in terms of mass, C, N, and P dynamics. These were compared between different diameters of debris, areas...
Proterozoic sequences and their implications for Precambrian and Cambrian geologic evolution of western Kentucky: Evidence from seismic-reflection data
James A. Drahovzal
1997, Seismological Research Letters (68) 553-566
Analyses of two seismic-reflection lines in western Kentucky indicate the presence of two Proterozoic, unconformity-bounded sequences. One is autochthonous and of probable Late Proterozoic age; the other is allochthonous and of probable Middle Proterozoic age. Reflector patterns and apparent relationships to similar sequences elsewhere in the region suggest that the...
Evidence of Newell's Shearwater breeding in Puna District, Hawaii
Michelle H. Reynolds, George L. Ritchotte
1997, Journal of Field Ornithology (68) 26-32
Nocturnal surveys using auditory cues and night-vision equipment were conducted during the seabird breeding season in 1993 to determine use of inland areas in the Puna District, Hawaii by Newell's Shearwater (Puffinus auricularus newelli). Two hundred sixty Newell's Shearwater auditory or visual detections were made during 275 survey hours from...
Kauai's endangered solitaires: Update on population status and distribution 1996
Michelle H. Reynolds, Thomas J. Snetsinger, Christina M. Herrmann
1997, Transactions of the Western Section of the Wildlife Society (33) 49-55
The puaioihi (Myadestes palmeri) and the kamao (M. myadestinus) are endangered solitaires endemic to Kauai in the Hawaiian Islands and now restricted to the Alakai Swamp. The puaiohi has been rare historically with population estimates declining since the first population surveys 1968-73. Puaiohi were believed to be on the verge...
Introduced species: A significant component of human-caused global change
Peter M. Vitousek, Carla M. D'Antonio, Lloyd L. Loope, Marcel Rejmanek, Randy G. Westbrooks
1997, New Zealand Journal of Ecology (21) 1-16
Biological invasions are a widespread and significant component of human-caused global environmental change. The extent of invasions of oceanic islands, and their consequences for native biological diversity, have long been recognized. However, invasions of continental regions also are substantial. For example, more than 2,000 species of alien plants are established...
Composition of the crust in the Grenville and Appalachian Provinces of North America inferred from VP/VS ratios
G. Musacchio, Walter D. Mooney, James H. Luetgert, Nikolas I. Christensen
1997, Journal of Geophysical Research B: Solid Earth (102) 15225-15241
We use the ratios between P and S wave velocities (VP/VS), derived from seismic refraction data, to infer the composition of the crust in the Grenville and the Appalachian Provinces of North America. The crust exhibits VP/VS increasing with depth from 1.64 to 1.84; there is a clear distinction between the Grenville...
Status, ecology, and management of the invasive plant, Miconia calvescens DC (Melastomataceae) in the Hawaiian islands
Arthur C. Medieros, Lloyd L. Loope, P. Conant, S. McElvaney
1997, Bishop Museum Occasional Papers (48) 23-36
Miconia calvescens (Melastomataceae), native to montane forests of the neotropics, has now invaded wet forests of both the Society and Hawaiian Islands. This tree, which grows up to 15 m tall, is potentially the most invasive and damaging weed of rainforests of Pacific islands. In moist conditions, it grows rapidly,...
USGS Wildland Fire Workshop, EROS Data Center, Sioux Falls, SD, July 9-10, 1997
S. G. Coloff, J. Findley, Rosalind L. Helz
1997, Report
Report on the first workshop on USGS wildland fire expertise and capabilities. The workshop brought together operationaland research representatives ofthe Federal fire management agencies to initiate a more comprehensive assessmentofthe USGS's capabilities and the appropriate role(s) for USGS interaction and involvement with the fire community. Thereport discusses how the USGS...
1994 annual status report: a summary of fish data in six reaches of the upper Mississippi River system
Steve Gutreuter, Randy W. Burkhardt, Mark Stopyro, Andrew Bartels, Eric Kramer, Melvin C. Bowler, Frederick A. Cronin, Dirk W. Soergel, Michael D. Petersen, David P. Herzog, Paul T. Raibley, Kevin S. Irons, Timothy M. O’Hara
1997, Long Term Resource Monitoring Program 97-P007
The Long Term Resource Monitoring Program (LTRMP) completed 2,653 collections of fishes from stratified random and permanently fixed sampling locations in six study reaches of the Upper Mississippi River System during 1994. Collection methods included day and night electrofishing, hoop netting, fyke netting (two net sizes), gill netting, seining,...