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

164494 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 1237, results 30901 - 30925

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Use of glacier river-fed estuary channels by juvenile coho salmon: transitional or rearing habitats?
Tammy D. Hoem Neher, Amanda E. Rosenberger, Christian E. Zimmerman, Coowe M. Walker, Steven J. Baird
2014, Environmental Biology of Fishes (97) 839-850
Estuaries are among the most productive ecosystems in the world and provide important rearing environments for a variety of fish species. Though generally considered important transitional habitats for smolting salmon, little is known about the role that estuaries serve for rearing and the environmental conditions important for salmon. We illustrate...
Temporal patterns in the foraging behavior of sea otters in Alaska
George G. Esslinger, James L. Bodkin, André R. Breton, Jennifer M. Burns, Daniel H. Monson
2014, Journal of Wildlife Management (78) 689-700
Activity time budgets in apex predators have been proposed as indicators of population status relative to resource limitation or carrying capacity. We used archival time-depth recorders implanted in 15 adult female and 4 male sea otters (Enhydra lutris) from the northernmost population of the species, Prince William Sound, Alaska, USA,...
Factors influencing immediate post-release survival of spectacled eiders following surgical implantation of transmitters with percutaneous antennae
Matthew G. Sexson, Daniel M. Mulcahy, Maria Spriggs, Gwen E. Myers
2014, Journal of Wildlife Management (78) 550-560
Surgically implanted transmitters are a common method for tracking animal movements. Immediately following surgical implantation, animals pass through a critical recovery phase when behaviors may deviate from normal and the likelihood of individual survival may be reduced. Therefore, data collected during this period may be censored to minimize bias introduced...
Methods for estimating drought streamflow probabilities for Virginia streams
Samuel H. Austin
2014, Scientific Investigations Report 2014-5145
Maximum likelihood logistic regression model equations used to estimate drought flow probabilities for Virginia streams are presented for 259 hydrologic basins in Virginia. Winter streamflows were used to estimate the likelihood of streamflows during the subsequent drought-prone summer months. The maximum likelihood logistic regression models identify probable streamflows from 5...
Localized rejuvenation of a crystal mush recorded in zircon temporal and compositional variation at the Lassen Volcanic Center, northern California
Erik W. Klemetti, Michael A. Clynne
2014, PLoS ONE (9)
Zircon ages and trace element compositions from recent silicic eruptions in the Lassen Volcanic Center (LVC) allow for an evaluation of the timing and conditions of rejuvenation (reheating and mobilization of crystals) within the LVC magmatic system. The LVC is the southernmost active Cascade volcano and, prior to the 1980...
Global land cover mapping: a review and uncertainty analysis
Russell G. Congalton, Jianyu Gu, Kamini Yadav, Prasad S. Thenkabail, Mutlu Ozdogan
2014, Remote Sensing (6) 12070-12093
Given the advances in remotely sensed imagery and associated technologies, several global land cover maps have been produced in recent times including IGBP DISCover, UMD Land Cover, Global Land Cover 2000 and GlobCover 2009. However, the utility of these maps for specific applications has often been hampered due to considerable...
Estimation of potential evapotranspiration from extraterrestrial radiation, air temperature and humidity to assess future climate change effects on the vegetation of the Northern Great Plains, USA
David A. King, Dominique M. Bachelet, Amy J. Symstad, Ken Ferschweiler, Michael Hobbins
2014, Ecological Modelling (297) 86-97
The potential evapotranspiration (PET) that would occur with unlimited plant access to water is a central driver of simulated plant growth in many ecological models. PET is influenced by solar and longwave radiation, temperature, wind speed, and humidity, but it is often modeled as a function of temperature alone. This...
Gravity survey and interpretation of Fort Irwin and vicinity, Mojave Desert, California
Robert C. Jachens, Victoria E. Langenheim
David C. Buesch, editor(s)
2014, Open-File Report 2013-1024-H
In support of a hydrogeologic study of the groundwater resources on Fort Irwin, we have combined new gravity data with preexisting measurements to produce an isostatic residual gravity map, which we then separated into two components reflecting (1) the density distribution in the pre-Cenozoic basement complex and (2) the distribution...
Introduction to the geologic and geophysical studies of Fort Irwin, California
David C. Buesch
David C. Buesch, editor(s)
2014, Open-File Report 2013-1024-A
Geologic and geophysical investigations in the vicinity of Fort Irwin National Training Center, California, have been completed in support of groundwater investigations, and are presented in eight chapters of this report. A generalized surficial geologic map along with field and borehole investigations conducted during 2010–11 provide a lithostratigraphic and structural...
Generalized surficial geologic map of the Fort Irwin Area, San Bernardino County, California
David M. Miller, Christopher M. Menges, David J. Lidke
David C. Buesch, editor(s)
2014, Open-File Report 2013-1024-B
The geology and landscape of the Fort Irwin area, typical of many parts of the Mojave Desert, consist of rugged mountains separated by broad alluviated valleys that form the main coarse-resolution features of the geologic map. Crystalline and sedimentary rocks, Mesozoic and older in age, form most of the mountains...
Specification for the U.S. Geological Survey Historical Topographic Map Collection
Gregory J. Allord, Jennifer L. Walter, Kristin A. Fishburn, Gale A. Shea
2014, Techniques and Methods 11-B6
This document provides the detailed requirements for producing, archiving, and disseminating a comprehensive digital collection of topographic maps for the U.S. Geological Survey (USGS) Historical Topographic Map Collection (HTMC). The HTMC is a digital archive of about 190,000 printed topographic maps published by the USGS from the inception of the...
Aeromagnetic data, processing, and maps of Fort Irwin and vicinity, California
Victoria E. Langenheim, Robert C. Jachens
David C. Buesch, editor(s)
2014, Open-File Report 2013-1024-I
Aeromagnetic data help provide the underpinnings of a hydrogeologic framework for Fort Irwin by locating inferred structural features or grain that influence groundwater flow. Magnetization boundaries defined by horizontal-gradient analyses coincide locally with Cenozoic faults and can be used to extend these faults beneath cover. These boundaries also highlight the...
Sediment data collected in 2013 from the northern Chandeleur Islands, Louisiana
Noreen A. Buster, Kyle W. Kelso, Julie Bernier, James G. Flocks, Jennifer L. Miselis, Nancy T. DeWitt
2014, Data Series 894
As part of the Barrier Island Evolution Research project, scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center collected sediment samples from the northern Chandeleur Islands in July 2013. The overall objective of this project, which integrates geophysical (bathymetric, seismic, and topographic) and sedimentologic data, is...
Documentation for the U.S. Geological Survey Public-Supply Database (PSDB): A database of permitted public-supply wells, surface-water intakes, and systems in the United States
Curtis V. Price, Molly A. Maupin
2014, Open-File Report 2014-1212
The U.S. Geological Survey (USGS) has developed a database containing information about wells, surface-water intakes, and distribution systems that are part of public water systems across the United States, its territories, and possessions. Programs of the USGS such as the National Water Census, the National Water Use Information Program, and...
Water resources of Vermilion Parish, Louisiana
Lawrence B. Prakken, Vincent E. White
2014, Fact Sheet 2014-3080
Information concerning the availability, use, and quality of water in Vermilion Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. Information on the availability,...
Estimates of groundwater recharge rates and sources in the East Mountain area, Eastern Bernalillo County, New Mexico, 2005-12
Steven E. Rice, Dianna M. Crilley
2014, Scientific Investigations Report 2014-5181
The U.S. Geological Survey, in cooperation with the Bernalillo County Public Works Division, has conducted a monitoring program in the East Mountain area of eastern Bernalillo County, New Mexico, since 2000 to better define the hydrogeologic characteristics of the East Mountain area and to provide scientific information that will assist...
Water resources of Jefferson Davis Parish, Louisiana
Vincent E. White, Lawrence B. Prakken
2014, Fact Sheet 2014-3074
Information concerning the availability, use, and quality of water in Jefferson Davis Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. Information on the...
Evaluation of a mass-balance approach to determine consumptive water use in northeastern Illinois
P.C. Mills, James J. Duncker, Thomas M. Over, Marian Domanski, Marian Domanski, Frank L. Engel
2014, Scientific Investigations Report 2014-5176
A principal component of evaluating and managing water use is consumptive use. This is the portion of water withdrawn for a particular use, such as residential, which is evaporated, transpired, incorporated into products or crops, consumed by humans or livestock, or otherwise removed from the immediate water environment. The amount...
A reconnaissance for signs of a Mississippi Valley-type lead-zinc mineralizing system on the eastern flank of the Rutbah Uplift, Anbar Province, Iraq
Timothy S. Hayes, Mazin Mustafa, Thair Bennet
2014, Open-File Report 2014-1240
Reconnaissance field visits and rock sampling were conducted at eight geologically selected locations within Mesozoic rocks on the eastern flank of the Rutbah Uplift, Anbar Province, western Iraq, in an attempt to determine if these rocks have been affected by a Mississippi Valley-Type (MVT) lead-zinc mineralizing system. Samples subsequently were...
Colorimetric microtiter plate receptor-binding assay for the detection of freshwater and marine neurotoxins targeting the nicotinic acetylcholine receptors
Fernando Rubio, Lisa Kamp, Justin Carpino, Erin Faltin, Keith A. Loftin, Jordi Molgo, Romulo Araoz
2014, Toxicon (91) 45-56
Anatoxin-a and homoanatoxin-a, produced by cyanobacteria, are agonists of nicotinic acetylcholine receptors (nAChRs). Pinnatoxins, spirolides, and gymnodimines, produced by dinoflagellates, are antagonists of nAChRs. In this study we describe the development and validation of a competitive colorimetric, high throughput functional assay based on the mechanism of action of freshwater and...
Evidence for free-living Bacteroides in Cladophora along the shores of the Great Lakes
Richard L. Whitman, Muruleedhara Byappanahalli, Ashley Spoljaric, Katarzyna Przybyla-Kelly, Dawn A. Shively, Meredith Nevers
2014, Aquatic Microbial Ecology (72) 117-126
Bacteroides is assumed to be restricted to the alimentary canal of animals and humans and is considered to be non-viable in ambient environments. We hypothesized that Bacteroides could persist and replicate within beach-stranded Cladophora glomerata mats in southern Lake Michigan, USA. Mean Bacteroides concentration (per GenBac3 Taqman quantitative PCR assay)...
Exposure pathways and biological receptors: baseline data for the canyon uranium mine, Coconino County, Arizona
Jo Ellen Hinck, Greg L. Linder, Abigail J. Darrah, Charles A. Drost, Michael C. Duniway, Matthew J. Johnson, Francisca M. Mendez-Harclerode, Erika M. Nowak, Ernest W. Valdez, Charles van Riper III, S.W. Wolff
2014, Journal of Fish and Wildlife Management (5) 422-440
Recent restrictions on uranium mining within the Grand Canyon watershed have drawn attention to scientific data gaps in evaluating the possible effects of ore extraction to human populations as well as wildlife communities in the area. Tissue contaminant concentrations, one of the most basic data requirements to determine exposure, are...
Conservation Action Planning: Lessons learned from the St. Marys River watershed biodiversity conservation planning process
Tamatha A. Patterson, Ralph Grundel
2014, Journal of Great Lakes Research (40) 7-14
Conservation Action Planning (CAP) is an adaptive management planning process refined by The Nature Conservancy (TNC) and embraced worldwide as the Open Standards for the Practice of Conservation. The CAP process facilitates open, multi-institutional collaboration on a common conservation agenda through organized actions and quantified results. While specifically designed for...
Environmental DNA calibration study. Interim technical review report
K. Baerwaldt, Meredith L. Bartron, K. Schilling, Debbie Lee, Edmond Russo, Trudy Estes, Richard Fischer, Beth Fleming, Michael P. Guilfoyle, K. Jack Kilgore, Richard Lance, Edward Perkins, Martin Schultz, David Smith, Jon J. Amberg, Duane Chapman, Mark P. Gaikowski, Katy E. Klymus, Cathy A. Richter
2014, Report
Invasive aquatic nuisance species pose a major threat to aquatic ecosystems worldwide. Invasive Asian carps, including bighead carp (Hypophthalmichthys nobilis) and silver carp (H. molitrix) have been steadily dispersing upstream through the Mississippi, Illinois, and Des Plaines Rivers since the 1990s. To prevent further movement up the Illinois River into...
Focused rock uplift above the subduction décollement at Montague and Hinchinbrook Islands, Prince William Sound, Alaska
Kelly M Ferguson, Phillip A Armstrong, Arkle Jeanette C, Peter J. Haeussler
2014, Geosphere (11) 144-159
Megathrust splay fault systems in accretionary prisms have been identified as conduits for long-term plate motion and significant coseismic slip during subduction earthquakes. These fault systems are important because of their role in generating tsunamis, but rarely are emergent above sea level where their long-term (million year) history can be...