A geographic information systems approach to the analysis of contaminants in Galveston Bay
Marcia McNiff, P.F. Roscigno, Wei Ji
1993, Conference Paper, The third national U.S. Fish and Wildlife Service Geographic Information systems workshop
No abstract available....
Temporal and spatial variation in habitat characteristics of Tilefish (Lopholatilus Chamaeleonticeps) off the east coast of Florida
Kenneth W. Able, Churchill B. Grimes, Robert Jones, David C. Twichell
1993, Bulletin of Marine Science (53) 1013-1026
The tilefish, Lopholatilus chamaeleonticeps, constructs burrows in carbonate sediments off the central east coast of Florida at similar temperatures (8.6-15.4°C) and in similar sediment textures (high proportion of silts and clays) to conspecifics in the Mid-Atlantic Bight. The depths at which we observed tile fish off Florida (150-290 m), based...
The Pajarito Plateau: A bibliography
Frances Joan Mathien, Charlie R. Steen, Craig D. Allen
1993, NPS Southwest Cultural Resources Center Professional Paper 49
This bibliography is the result of two initially independent projects. As the consulting archaeologist at Los Alamos National Laboratory (LANL), Charlie R. Steen collected entries at the suggestion of the staff of the Environmental Surveillance Group of the Health, Safety, and Environmental Division, HSE-8. The primary purpose was to aid...
Primary production
S. G. Campbell
1993, Book chapter, Aquatic Ecology Studies of Twin Lakes, Colorado 1971-86: Effects of a Pumped-Storage Hydroelectric Project on a Pair of Montane Lakes
No abstract available....
Decline of spectacled eiders nesting in western Alaska
Robert A. Stehn, Christian P. Dau, Bruce Conant, William I. Butler Jr.
1993, Arctic (46) 264-277
Spectacled eider (Somateria fischeri) populations in western Alaska are now less than 4% of the numbers estimated in the early 1970s. In 1992, an estimated 1721 nesting pairs remained on the Yukon-Kuskokwim Delta. Causes of this rapid and continuing decline of -14% per year are undocumented. Many aspects of spectacled...
Aspects of the biogeochemistry of methane in Mono Lake and the Mono Basin of California
Ronald S. Oremland, Laurence G. Miller, Charles Colbertson, S.W. Robinson, Richard L. Smith, Derek R. Lovley, Michael J. Whiticar, G. King, Ronald P. Kiene, Niels Iversen, Melinda Sargent
R. Oremland, editor(s)
1993, Book chapter, Biogeochemistry of global change
Above-ambient levels of methane and higher hydrocarbons were detected in the atmosphere of the Mono Basin. These gases emanated from several different sources, including natural gas seeps (thermogenic and biogenic), and methanogenic activity in sediments. Seeps were distributed over nearly 33% of the lake bottom and were also present...
Differential migration of Blue Grouse in Colorado
Brian S. Cade, Richard W. Hoffman
1993, The Auk (110) 70-77
We examined migration of adult Blue Grouse (Dendragapus obscurus) in north-central Colorado by radio tracking 13 males and 19 females. Elevational changes associated with movements to winter areas were greater for males (median = 488 m, range = 183-671 m) than females (median = 122 m, range = -61-760 m)....
The effect of the Lawn Lake flood on the benthic macroinvertebrate community in Fall River, Rocky Mountain National Park
D. R. Beeson, Terry P. Boyle
1993, Report, Ecological effects of the Lawn Lake flood of 1982, Rocky Mountain National Park
No abstract available....
Carbonate-periplatform sedimentation by density flows: A mechanism for rapid off-bank and vertical transport of shallow-water fines
P.A. Wilson, Harry H. Roberts
1993, Geology (20) 713-716
Existing theories of off-bank sediment transport cannot account for rapid rates of sedimentation observed in Bahama bank and Florida shelf periplatform environments. Analysis of the physical processes operating during winter cold fronts suggests that accelerated off-bank transport of shallow-water mud may be achieved by sinking off-bank flows of sediment-charged hyperpycnal...
A matter of scale: damage from Hurricane Hugo (1989) to U.S. Virgin Islands reefs at the colony, community and whole reef level
Caroline S. Rogers
1993, Conference Paper
Studies at Buck Island Reef National Monument (St. Croix) and Virgin Islands National Park (St. John) by scientists in the U.S. National Park Service Coral Reef Assessment Program re- vealed the effects of Humcane Hugo on individual coral species, community parameters, and overall reef structure. Effects of the storm varied...
Vegetation needs of the desert tortoise in the Sonoran and Mojave Deserts
T. E. Cordery, T. A. Duck, T.C. Esque, J. J. Slack
1993, Book, Proceedings for symposium on vegetation management of hot desert rangeland ecosystems
No abstract available....
Avian malaria fatal to juvenile I'iwi
C. T. Atkinson, R. J. Dusek, W. M. Iko
1993, Hawaii's Forests and Wildlife Newsletter (8) 1-11
No abstract available....
Ecology of red swamps in the glaciated northeast: a community profile
Francis C. Golet, Aram J.K. Calhoun, William R. DeRagon
1993, Biological Report 12
This report is part of a series of profiles on the ecology of wetland and deepwater habitats. This particular profile addresses red maple swamps in the glaciated northeastern United States. Red maple (Acer rubrum) swamp is a dominant wetland type in most of the region; it reaches its greatest abundance...
Water resources data, New York, water year 1992. Volume 2. Long Island
A. G. Spinello, J. H. Nakao, R. Busciolano, R. B. Winowitch, V. K. Eagen
1993, Water Data Report NY-92-2
Water resources data for the 1992 water year for New York consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality of ground-water wells. This volume contains records for water discharge at 18 gaging...
Problems and practices in backcountry recreation management: A survey of National Park Service managers
J. L. Marion, J.W. Roggenbuck, R.E. Manning
1993, Natural Resource Report NPS/NRVT/NRR-93/12.
No abstract available....
Distribution and conservation status of prairie dogs Cynomys mexicanus and Cynomys ludovicianus in Mexico
Gerardo Ceballos, Eric Mellink, Louis R. Hanebury
1993, Biological Conservation (63) 105-112
The two living species of black-tailed prairie dogs Cynomys mexicanus and C. ludovicianus are found in Mexico. Cynomys mexicanus, a Mexican endemic, is restricted to a 600-km2 region in northwestern Mexico. It is found in six large arid grassland valleys associated with gypsum soils and surrounded by arid scrub. Due...
Ground-water models: Validate or invalidate
J.D. Bredehoeft, Leonard F. Konikow
1993, Ground Water (31) 178-179
The word validation has a clear meaning to both the scientific community and the general public. Within the scientific community the validation of scientific theory has been the subject of philosophical debate. The philosopher of science, Karl Popper, argued that scientific theory cannot be validated, only invalidated. Popper’s view is...
A speculative history of the San Andreas fault in the central Transverse Ranges, California
R.J. Weldon II, K. E. Meisling, J. Alexander
Robert E. Powell, Jonathan C. Matti, editor(s)
1993, Book chapter, The San Andreas Fault system: Displacement, palinspastic reconstruction, and geologic evolution
It is generally accepted that the San Andreas fault formed between 4 and 5 Ma and that rocks west of it are now part of the Pacific plate, moving northwest relative to North America at 5 to 6 cm/yr. This model is inconsistent with the geologic record in the central...
Potential ungulate prey for Gray Wolves
Francis J. Singer, John A. Mack
1993, Report
Data were gathered for six ungulate species that reside in or near Yellowstone National Park. If gray wolves (Canis lupus) are reintroduced into the Yellowstone area, their avoidance of human activities or their management by human may determine their range. Therefore, the area of wolf occupation cannot be...
Geologic radon potential of the United States
R. Randall Schumann, editor(s)
1993, Open-File Report 93-292
The Indoor Radon Abatement Act of 1988 (Public Law 100-551) directed the U.S. Environmental Protection Agency (EPA) to identify areas of the United States that have the potential to produce harmful levels of indoor radon, based on both geological data and on indoor radon levels in homes and other structures....
Macroclemys, gray alligator snapping turtles
J. E. Lovich
1993, Book chapter, Catalogue of American Amphibians and Reptiles
No abstract available....
Assessing the "need to negotiate" in FERC licensing consultations: a study of two hydropower projects
Beth A. K. Coughlan, Nina Burkardt, David Fulton
1993, Environmental Impact Assessment Review (13) 331-334
We investigated the “need to negotiate” in a comparative case study of multi-agency negotiations in the FERC licensing process. Researchers interviewed participants in two cases involving environmental consultations and asked about parties' level of need to negotiate throughout the process. Participants identified a need to negotiate, and when this need...
Functions and values of western riparian ecosystems
Lee S. Ischinger
1993, Book, Proceedings of the 13th Annual Conference of the Society of Wetland Scientists
No abstract available....
Geochemical models
David L. Parkhurst, L.N. Plummer
William M. Alley, editor(s)
1993, Book chapter, Regional ground-water quality
No abstract available. ...
Atmospheric transport of organophosphate pesticides from California's Central Valley to the Sierra Nevada Mountains
John M. Zabik, James N. Seiber
1993, Journal of Environmental Quality (22) 80-90
Atmospheric transport of organophosphate pesticides from California's Central Valley to the Sierra Nevada mountains was assessed by collecting air- and wet-deposition samples during December, January, February, and March, 1990 to 1991. Large-scale spraying of these pesticides occurs during December and January to control insect infestations in valley orchards. Sampling sites...
