Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

10458 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 293, results 7301 - 7325

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Seasonal habitat-use patterns of nekton in a tide-restricted and unrestricted New England salt marsh
K.B. Raposa, C. T. Roman
2001, Wetlands (21) 451-461
Many New England salt marshes remain tide-restricted or are undergoing tidal restoration. Hydrologic manipulation of salt marshes affects marsh biogeochemistry and vegetation patterns, but responses by fishes and decapod crustaceans (nekton) remain unclear, This study examines nekton habitat-use patterns in the tide-restricted Hatches Harbor salt marsh (Provincetown, Massachusetts) relative to...
Systems identification and the adaptive management of waterfowl in the United States
B. Kenneth Williams, J.D. Nichols
2001, Wildlife Biology (7) 223-236
Waterfowl management in the United States is one of the more visible conservation success stories in the United States. It is authorized and supported by appropriate legislative authorities, based on large-scale monitoring programs, and widely accepted by the public. The process is one of only a limited number...
Ground-nesting waterbirds and mammalian carnivores in the Virginia barrier island region: Running out of options
R.M. Erwin, B.R. Truitt, J.E. Jimenez
2001, Journal of Coastal Research (17) 292-296
We examined changing patterns of distribution of two large mammalian predators, the raccoon (Procyon lotor) and red fox (Vulpes vulpes), and beach-nesting terns and Black Skimmers (Rynchops niger) along ca. 80 km of the Virginia barrier island landscape between the periods 1975-1977 and 1998. Based on evidence from trapping,...
Managing birds and controlling aircraft in the Kennedy Airport-Jamaica Bay Wildlife Refuge complex: The need for hard data and soft opinions
K. M. Brown, R.M. Erwin, M. E. Richmond, P. A. Buckley, J.T. Tanacredi, D. Avrin
2001, Environmental Management (28) 207-224
During the 1980s, the exponential growth of laughing gull (Larus atricilla) colonies, from 15 to about 7600 nests in 1990, in the Jamaica Bay Wildlife Refuge and a correlated increase in the bird-strike rate at nearby John F. Kennedy International Airport (New York City) led to a controversy between wildlife...
Conservation genetics of the endangered Shenandoah salamander (Plethodon shenandoah, Plethodontidae)
D.W. Carpenter, R.E. Jung, J.W. Sites Jr.
2001, Animal Conservation (4) 111-119
The Shenandoah salamander (Plethodon shenandoah) is restricted to three isolated talus outcrops in Shenandoah National Park, VA, USA and has one of the smallest ranges of any tetrapod vertebrate. This species was listed as endangered under the US Endangered Species Act in 1989 over concern that direct competition with...
Flow and habitat effects on juvenile fish abundance in natural and altered flow regimes
Mary C. Freeman, Z.H. Bowen, K.D. Bovee, E.R. Irwin
2001, Ecological Applications (11) 179-190
Conserving biological resources native to large river systems increasingly depends on how flow-regulated segments of these rivers are managed. Improving management will require a better understanding of linkages between river biota and temporal variability of flow and instream habitat. However, few studies have quantified responses of native fish...
Forest fragmentation and bird community dynamics: Inference at regional scales
T. Boulinier, J.D. Nichols, J.E. Hines, J.R. Sauer, C.H. Flather, K. H. Pollock
2001, Ecology (82) 1159-1169
With increasing fragmentation of natural areas and a dramatic reduction of forest cover in several parts of the world, quantifying the impact of such changes on species richness and community dynamics has been a subject of much concern. Here, we tested whether in more fragmented landscapes there was a lower...
Antibody response to rabies vaccination in captive and freeranging wolves (Canis lupus)
N.E. Federoff
2001, Journal of Zoo and Wildlife Medicine (32) 127-129
Fourteen captive and five free-ranging Minnesota gray wolves (Canis lupus) were tested for the presence of rabies virus neutralizing antibodies (RVNA) after vaccination with an inactivated canine rabies vaccine. Blood was collected from all wolves prior to vaccination and at 1 mo postvaccination (PV) and from all captive and...
Surficial geology of the lower Comb Wash, San Juan County, Utah
Claire I. Longpre
2001, Open-File Report 2001-424
The surficial geologic map of lower Comb Wash was produced as part of a master’s thesis for Northern Arizona University Quaternary Sciences program. The map area includes the portion of the Comb Wash alluvial valley between Highway 163 and Highway 95 on the Colorado Plateau in southeastern Utah. The late...
Our evolving conceptual model of the coastal eutrophication problem
James E. Cloern
2001, Marine Ecology Progress Series (210) 223-253
A primary focus of coastal science during the past 3 decades has been the question: How does anthropogenic nutrient enrichment cause change in the structure or function of nearshore coastal ecosystems? This theme of environmental science is recent, so our conceptual model of the coastal eutrophication problem continues to change...
Geochemical analysis of soils and sediments, Coeur d'Alene drainage basin, Idaho: sampling, analytical methods, and results
Stephen E. Box, Arthur A. Bookstrom, Mohammed Ikramuddin, James Lindsay
2001, Open-File Report 2001-139
This report presents the locations, descriptions, analytical procedures used, and an inter-lab comparison of over 1100 geochemical analyses of samples of soil and sediment in and downstream of a major lead-zinc-silver mining district in the Coeur d'Alene (CdA) drainage basin of northern Idaho. The samples fall in 3 broad categories:...
Marine recreation and public health microbiology: Quest for the ideal indicator
Dale W. Griffin, Erin K. Lipp, Molly R. McLaughlin, Joan B. Rose
2001, BioScience (51) 817-825
Four-fifths of the population of the United States live in close proximity to the oceans or Great Lakes, and approximately 100 million Americans use the marine environment for recreation each year (Thurman 1994). Consequently, contamination of lakes, rivers, and coastal waters raises significant public health...
Occurrence and distribution of contaminants in bottom sediment and water of the Barron River Canal, Big Cypress National Preserve, Florida
Ronald L. Miller, Benjamin F. McPherson
2001, Florida Scientist (64) 1-19
Trace elements and organic contaminants in bottom-sediment samples collected from 10 sites on the Barron River Canal and from one site on the Turner River in October 1998 had patterns of distribution that indicated different sources. At some sites on the Barron River Canal, lead, copper, and zinc, normalized to...
Biography of Dr. John L. Fryer
John L. Fryer
2001, Journal of Fish Diseases (24) 63-66
There is probably no one in the fish health community who does not recognize the name of Professor John L. Fryer....
Geology and natural history of the San Francisco Bay area: A field-trip guidebook
Philip W. Stoffer, Leslie C. Gordon, editor(s)
2001, Bulletin 2188
A National Association of Geoscience Teachers Far Western Section (NAGT-FWS) field conference is an ideal forum for learning about the geology and natural history of the San Francisco Bay area. We visit classic field sites, renew old friendships, and make new ones. This collection of papers includes field guides and...
Analysis of late Quaternary faulting in San Diego Bay and hazard to the Coronado Bridge
Michael P. Kennedy, Samuel H. Clarke Jr.
2001, California Geology (54) 4-17
Southern California is transected by numerous pervasive northwest-trending Quaternary fault zones. Together they form the broad transform-fault boundary along which the Pacific and North America crustal plates move irregularly past one another in a right-lateral sense at a rate of about 5 centimeters (cm)/year. The city of San Diego, which...
Petroleum geology and resources of the Dnieper-Donets Basin, Ukraine and Russia
Gregory F. Ulmishek
2001, Bulletin 2201-E
The Dnieper-Donets basin is almost entirely in Ukraine, and it is the principal producer of hydrocarbons in that country. A small southeastern part of the basin is in Russia. The basin is bounded by the Voronezh high of the Russian craton to the northeast and by the Ukrainian shield to...
Water-quality characteristics in the Black Hills area, South Dakota
Joyce E. Williamson, Janet M. Carter
2001, Water-Resources Investigations Report 2001-4194
This report summarizes the water-quality characteristics of ground-water and surface-water in the Black Hills area. Differences in groundwater quality by aquifer and differences in surfacewater quality by water source are presented. Ground-water characteristics are discussed individually for each of the major aquifers in the Black Hills area, referred to herein...
Impacts of heterogeneous organic matter on phenanthrene sorption--Different soil and sediment samples
Hrissi K. Karapanagioti, Jeffrey Childs, David A. Sabatini
2001, Environmental Science & Technology (35) 4684-4690
Organic petrography has been proposed as a tool for characterizing the heterogeneous organic matter present in soil and sediment samples. A new simplified method is proposed as a quantitative means of interpreting observed sorption behavior for phenanthrene and different soils and sediments based on their organic petrographical characterization. This method...
Hydrologic budgets for the Madison and Minnelusa aquifers, Black Hills of South Dakota and Wyoming, water years 1987-96
Janet M. Carter, Daniel G. Driscoll, Ghaith R. Hamade, Gregory J. Jarrell
2001, Water-Resources Investigations Report 2001-4119
The Madison and Minnelusa aquifers are two of the most important aquifers in the Black Hills area of South Dakota and Wyoming. Quantification and evaluation of various hydrologic budget components are important for managing and understanding these aquifers. Hydrologic budgets are developed for two scenarios, including an overall budget for the...
Frequently co‐occurring pesticides and volatile organic compounds in public supply and monitoring wells, southern New Jersey, USA
Paul E. Stackelberg, Leon J. Kauffman, Mark A. Ayers, Arthur L. Baehr
2001, Environmental Toxicology and Chemistry (20) 853-865
One or more pesticides were detected with one or more volatile organic compounds (VOCs) in more than 95% of samples collected from 30 public supply and 95 monitoring wells screened in the unconsolidated surficial aquifer system of southern New Jersey, USA. Overall, more than 140,000 and...
Droughts, epic droughts and droughty centuries - lessons from a California paleoclimatic record: a PACLIM 2001 meeting report
M. D. Dettinger
2001, Interagency Ecological Program Newsletter (14) 51-53
During the early 1990s (but echoing studies by S.T. Harding at the University of California, from as early as the 1930s), several lines of paleoclimate evidence in and around the Sierra Nevada Range have provided the water community in California with some real horror stories. By studying ancient tree stumps...
A spatially referenced regression model (SPARROW) for suspended sediment in streams of the Conterminous U.S.
Gregory E. Schwarz, Richard A. Smith, Richard B. Alexander, John R. Gray
2001, Conference Paper, Proceedings of the Seventh Federal Interagency Sedimentation Conference, March 25 to 29, 2001, Reno, Nevada
Suspended sediment has long been recognized as an important contaminant affecting water resources. Besides its direct role in determining water clarity, bridge scour and reservoir storage, sediment serves as a vehicle for the transport of many binding contaminants, including nutrients, trace metals, semi-volatile organic compounds, a nd numerous pesticides (U.S....
Perspectives from the Aldo Leopold Wilderness Research Institute: Amphibians and wilderness
Paul Stephen Corn
2001, International Journal of Wilderness (7) 25-25
The decline of amphibian species has emerged as a major global conservation issue in the last decade. Last year, the Department of the Interior (DOI) initiated a major national initiative to detect trends in amphibian populations and research the causes of declines. The program, conducted principally by the U.S. Geological...
Evaluation of the Liu model for predicting rainfall interception in forests world-wide
Shu-Guang Liu
2001, Hydrological Processes (15) 2341-1360
Simple but effective models are needed for the prediction of rainfall interception under a full range of environmental and management conditions. The Liu model was validated using data published in the literature and was compared with two leading models in the literature: the Rutter and the Gash models. The Liu...