Grassland birds wintering at U.S. Navy facilities in southern Texas
Marc C. Woodin, Mary Kay Skoruppa, Pearce D. Bryan, Amanda J. Ruddy, Graham C. Hickman
2010, Open-File Report 2010-1115
Grassland birds have undergone widespread decline throughout North America during the past several decades. Causes of this decline include habitat loss and fragmentation because of conversion of grasslands to cropland, afforestation in the East, brush and shrub invasion in the Southwest and western United States, and planting of exotic grass...
Protocols for geologic hazards response by the Yellowstone Volcano Observatory to activity within the Yellowstone Volcanic System
Yellowstone Volcano Observatory
2010, Circular 1351
Executive SummaryThe Yellowstone Plateau hosts an active volcanic system, with subterranean magma (molten rock), boiling, pressurized waters, and a variety of active faults with significant earthquake hazards. Within the next few decades, light-to-moderate earthquakes and steam explosions are certain to occur. Volcanic eruptions are less likely, but are ultimately inevitable...
A deposit model for Mississippi Valley-Type lead-zinc ores
David L. Leach, Ryan D. Taylor, David L. Fey, Sharon F. Diehl, Richard W. Saltus
2010, Scientific Investigations Report 2010-5070-A
This report is a descriptive model of Mississippi Valley-Type (MVT) lead-zinc deposits that presents their geological, mineralogical and geochemical attributes and is part of an effort by the U.S. Geological Survey Mineral Resources Program to update existing models and develop new models that will be used for an upcoming national...
Surficial geologic map of the Amboy 30' x 60' quadrangle, San Bernardino County, California
David R. Bedford, David M. Miller, Geoffrey A. Phelps
2010, Scientific Investigations Map 1309
The surficial geologic map of the Amboy 30' x 60' quadrangle presents characteristics of surficial materials for an area of approximately 5,000 km2 in the eastern Mojave Desert of southern California. This map consists of new surficial mapping conducted between 2000 and 2007, as well as compilations from previous surficial...
Evaluating the feasibility of modeling the subsurface structure of two volcanic units in drill holes UE-18r and ER-EC-2a using existing magnetic data, Nevada Test Site
G. A. Phelps
2010, Open-File Report 2010-1112
The magnetic properties of two volcanic units encountered in two drill holes, ER-EC-2a and UE18r, located in the vicinity of the Nevada Test Site, were investigated to determine if the units were significantly more magnetic than overlying units and, thus, detectable by using aeromagnetic data. Magnetic-susceptibility measurements were made on...
Effects of Glen Canyon Dam discharges on water velocity and temperatures at the confluence of the Colorado and Little Colorado Rivers and implications for habitat for young-of-year humpback chub (Gila cypha)
Frank R. Protiva, Barbara E. Ralston, Dennis M. Stone, Keith A. Kohl, Michael D. Yard, G. Allen Haden
2010, Open-File Report 2010-1137
Water velocity and temperature are physical variables that affect the growth and survivorship of young-of-year (YOY) fishes. The Little Colorado River, a tributary to the Colorado River in Grand Canyon, is an important spawning ground and warmwater refuge for the endangered humpback chub (Gila cypha) from the colder mainstem Colorado...
Fort Collins Science Center-Fiscal year 2009 science accomplishments
Juliette T. Wilson (compiler)
2010, Open-File Report 2010-1148
Public land and natural resource managers in the United States are confronted with increasingly complex decisions that have important ramifications for both ecological and human systems. The scientists and technical professionals at the U.S. Geological Survey Fort Collins Science Center?many of whom are at the forefront of their fields?possess a...
Virulence correlates with fitness in vivo for two M group genotypes of Infectious hematopoietic necrosis virus (IHNV).
Andrew R. Wargo, Kyle A. Garver, Gael Kurath
2010, Virology (404) 51-58
The nature of the association between viral fitness and virulence remains elusive in vertebrate virus systems, partly due to a lack of in vivo experiments using statistically sufficient numbers of replicate hosts. We examined the relationship between virulence and fitness in Infectious hematopoietic necrosis virus (IHNV), in vivo, in intact...
An overview of marine biodiversity in United States waters
Daphne G. Fautin, Penelope Delton, Lewis S. Incze, Jo-Ann C. Leong, Clarence Pautzke, Andrew A. Rosenberg, Paul Sandifer, George R. Sedberry, John W. Tunnell Jr., Isabella Abbott, Russell E. Brainard, Melissa Brodeur, Lucius G. Eldredge, Michael Feldman, Fabio Moretzsohn, Peter S. Vroom, Michelle Wainstein, Nicholas Wolff
2010, PLoS ONE (5)
Marine biodiversity of the United States (U.S.) is extensively documented, but data assembled by the United States National Committee for the Census of Marine Life demonstrate that even the most complete taxonomic inventories are based on records scattered in space and time. The best-known taxa are those of commercial importance....
Interpreting Ca and Fe stable isotope signals in carbonates: A new perspective
Thomas D. Bullen, Ronald Amundson
2010, Conference Paper, Water-rock interaction XIII
No abstract available....
Near surface and deep subsurface monitoring for successful geologic sequestration of CO2
Yousif K. Kharaka, James J. Thordsen, Thomas D. Bullen, D.R. Cole, T.J. Phelps, J.T. Birkholzer, S.D. Hovorka
2010, Conference Paper, Water-rock interaction XIII
No abstract available....
Carbon isotope composition of CO2 at Cascade Arc volcanoes
William C. Evans, Robert H. Mariner, Deborah Bergfeld, Kinga M. Revesz, John P. McGeehin
Peter Birkle, Ignacio Salvador Torres Alvarado, editor(s)
2010, Conference Paper, Water-rock interaction XIII
No abstract available....
Modeling the effects of wave climate and sediment supply variability on large-scale shoreline change
Peter Ruggiero, Maarten C. Buijsman, George M. Kaminsky, Guy R. Gelfenbaum
2010, Marine Geology (273) 127-140
The application of an integrated data analysis and modeling scheme reveals that decadal-scale shoreline evolution along a U.S. Pacific Northwest littoral cell is highly dependent on both sediment supply and wave climate variability. In particular, accurate estimates of (Columbia River) sediment supply and sediment feeding from the lower shoreface are...
Utility of mesohabitat features for determining habitat associations of subadult sharks in Georgia’s estuaries
C.N. Belcher, Cecil A. Jennings
2010, Environmental Biology of Fishes (88) 349-359
We examined the affects of selected water quality variables on the presence of subadult sharks in six of nine Georgia estuaries. During 231 longline sets, we captured 415 individuals representing nine species. Atlantic sharpnose shark (Rhizoprionodon terranovae), bonnethead (Sphyrna tiburo), blacktip shark (Carcharhinus limbatus) and sandbar shark (C. plumbeus) comprised...
Historical evolution of the Columbia River littoral cell
George M Kaminsky, Ruggiero Peter, Maarten C. Buijsman, Diana McCandless, Guy R. Gelfenbaum
2010, Marine Geology (273) 96-126
This paper details the historical coastal evolution of the Columbia River littoral cell in the Pacific Northwest of the United States. Geological data from A.D. 1700 and records leading up to the late 1800s provide insights to the natural system dynamics prior to significant human intervention, most notably jetty construction...
Crater population and resurfacing of the Martian north polar layered deposits
Maria E. Banks, Shane Byrne, Kapil Galla, Alfred S. McEwen, Veronica J. Bray, Colin M. Dundas, Kathryn E. Fishbaugh, Kenneth E. Herkenhoff, Bruce C. Murray
2010, Journal of Geophysical Research E: Planets (115)
Present‐day accumulation in the north polar layered deposits (NPLD) is thought to occur via deposition on the north polar residual cap. Understanding current mass balance in relation to current climate would provide insight into the climatic record of the NPLD. To constrain processes and rates of NPLD resurfacing, a search...
Depth profiles in a tropical, volcanic critical zone observatory: Basse-Terre, Guadeloupe
H.L. Buss, Arthur F. White, C. Dessert, J. Gaillardet, Alex E. Blum, P.B. Sak
2010, Conference Paper, Water-rock interaction XIII
No abstract available....
Alkali elements as geothermometers for ridge flanks and subduction zones
W. Wei, M. Kastner, Robert J. Rosenbauer, L.-H. Chan, Y. Weinstein
2010, Conference Paper, Water-rock interaction XIII
No abstract available....
2009 Data Summary USA-NPN Technical Series
Theresa Crimmins, Alyssa H. Rosemartin, Kathryn A. Thomas, R. Lee Marsh, Ellen G. Denny, Jake F. Weltzin
2010, USA-NPN Technical Series 2010-002
The USA National Phenology Network (USA-NPN) engages volunteer observers to collect phenology observations of plants and animals using consistent standards and to contribute to the USA-NPN National Phenology Database. In March 2009, the USA-NPN National Coordinating Office implemented an online monitoring program for 213 plant species. In this pilot year of...
Detecting Ecosystem Performance Anomalies for Land Management in the Upper Colorado River Basin Using Satellite Observations, Climate Data, and Ecosystem Models
Yingxin Gu, Bruce K. Wylie
2010, Remote Sensing (2) 1880-1891
This study identifies areas with ecosystem performance anomalies (EPA) within the Upper Colorado River Basin (UCRB) during 2005–2007 using satellite observations, climate data, and ecosystem models. The final EPA maps with 250-m spatial resolution were categorized as normal performance, underperformance, and overperformance (observed performance relative to weather-based predictions) at the...
Preface: Conservation Challenges for Stream Fish Ecologists
Paul L. Angermeier
2010, Conference Paper, Community ecology of stream fishes: concepts, approaches, and techniques
No abstract available....
2009 Spawning cisco investigations in the Canadian waters of Lake Superior
Daniel L. Yule, Gary A. Cholwek, Lori M. Evrard, E. Berglund, K.I. Cullis
2010, Report
We sampled with acoustics (AC) and midwater trawls (MT) to determine cisco abundance in Lake Superior’s Thunder and Black bays during 8-14 November, 2009. Total abundance of spawning-size (≥ 250 mm total length) ciscoes was estimated at 6.25 million in Thunder Bay and 1.12 million in Black Bay. Exploitation fractions...
Ecological models supporting environmental decision making: A strategy for the future
Amelie Schmolke, Pernille Thorbek, Donald L. DeAngelis, Volker Grimm
2010, Trends in Ecology and Evolution (25) 479-486
Ecological models are important for environmental decision support because they allow the consequences of alternative policies and management scenarios to be explored. However, current modeling practice is unsatisfactory. A literature review shows that the elements of good modeling practice have long been identified but are widely ignored. The reasons for...
Scenario-building for the Deepwater Horizon oil spill
Gary Machlis, Marcia K. McNutt
2010, Science (329) 1018-1019
In May 2010, the U.S. Department of the Interior (DOI) established a Strategic Sciences Working Group (SSWG) to assess how the Deepwater Horizon (DH) oil spill may impact the ecology, economy, and people of the Gulf of Mexico (GOM). It included scientists from diverse disciplines and federal, academic, and nongovernmental...
Tolerance of nonindigenous cichlid fishes (Cichlasoma urophthalmus, Hemichromis letourneuxi) to low temperature: laboratory and field experiments in south Florida
Pamela J. Schofield, William F. Loftus, Robert M. Kobza, Mark I. Cook, Daniel H. Slone
2010, Biological Invasions (12) 2441-2457
The cold tolerance of two non-native cichlids (Hemichromis letourneuxi and Cichlasoma urophthalmus) that are established in south Florida was tested in the field and laboratory. In the laboratory, fishes were acclimated to two temperatures (24 and 28°C), and three salinities (0, 10, and 35 ppt). Two endpoints were identified: loss of equilibrium...
