Ecological responses to contemporary climate change within species, communities, and ecosystems
Jerrold L. Belant, Erik A. Beever, John E. Gross, Joshua J. Lawler
2010, Conservation Biology (24) 7-9
No abstract available....
A record of phosphorus dynamics in oligotrophic lake sediment
Tiffany A. Wilson, Aria Amirbahman, Stephen A. Norton, Mary A. Voytek
2010, Journal of Paleolimnology (44) 279-294
Historical phosphorus (P) dynamics were studied using sediment cores from three oligotrophic, acidic lakes in Maine, USA. Long-term oligotrophy of these lakes is consistent with high sediment aluminum (as Al(OH)3) concentrations, as Al inhibits internal P loading, even under reducing conditions. The role of microbially-mediated reactions in controlling redox conditions...
Supraslab earthquake clusters above the subduction plate boundary offshore Sanriku, northeastern Japan: Seismogenesis in a graveyard of detached seamounts?
Naoki Uchida, Stephen H. Kirby, Tomomi Okada, Ryota Hino, Akira Hasegawa
2010, Journal of Geophysical Research B: Solid Earth (115) 1-13
Thousands of offshore repeating earthquakes with low‐angle thrust focal mechanisms occur along the subduction plate boundary of NE Japan. Double‐difference relocation methods using P‐ and S‐wave arrivals reveal clusters of events above these repeating events. To assure good depth control we restrict our study to events that are close to seismic stations. These...
Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Average Monthly Precipitation, 2002
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 490-20
This data set represents the average monthly precipitation in millimeters multiplied by 100 for 2002 compiled for every catchment of NHDPlus for the conterminous United States. The source data were the Near-Real-Time Monthly High-Resolution Precipitation Climate Data Set for the Conterminous United States (2002) raster dataset produced by the...
Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Average Annual Daily Minimum Temperature, 2002
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 490-30
This data set represents the average monthly minimum temperature in Celsius multiplied by 100 for 2002 compiled for every catchment of NHDPlus for the conterminous United States. The source data were the Near-Real-Time High-Resolution Monthly Average Maximum/Minimum Temperature for the Conterminous United States for 2002 raster dataset produced by the...
Integrating physiology, population dynamics and climate to make multi-scale predictions for the spread of an invasive insect: The Argentine ant at Haleakala National Park, Hawaii
Stephen Hartley, Paul D. Krushelnycky, Philip J. Lester
2010, Ecography: Pattern and Diversity in Ecology (33) 83-94
Mechanistic models for predicting species’ distribution patterns present particular advantages and challenges relative to models developed from statistical correlations between distribution and climate. They can be especially useful for predicting the range of invasive species whose distribution has not yet reached...
Algal toxins in Upper Klamath Lake, Oregon: Linking water quality to juvenile sucker health
S. P. VanderKooi, S. M. Burdick, K. R. Echols, C. A. Ottinger, B. H. Rosen, T. M. Wood
2010, Fact Sheet 2009-3111
As the lead science agency for the Department of Interior, the U.S. Geological Survey is actively involved in resource issues in the Klamath River basin. Activities include research projects on endangered Lost River and shortnose suckers, threatened coho salmon, groundwater resources, seasonal runoff forecasting, water quality in Upper Klamath Lake...
Terrestrial Ecosystems of the Conterminous United States
Roger G. Sayre, Patrick Comer, Jill Cress, Harumi Warner
2010, Scientific Investigations Map 3106
The U.S. Geological Survey (USGS), with support from NatureServe, has modeled the potential distribution of 419 terrestrial ecosystems for the conterminous United States using a comprehensive biophysical stratification approach that identifies distinct biophysical environments and associates them with known vegetation distributions (Sayre and others, 2009). This standardized ecosystem mapping effort...
Sediment Loading from Crab Creek and Other Sources to Moses Lake, Washington, 2007 and 2008
Christopher S. Magirl, Stephen E. Cox, Mark C. Mastin, Raegan L. Huffman
2010, Scientific Investigations Report 2010-5001
The average sediment-accumulation rate on the bed of Moses Lake since 1980, based on the identification of Mount St. Helens ash in lakebed cores, was 0.24 inches per year. Summed over the lake surface area, the average sediment-accumulation rate on the lakebed is 190,000 tons per year. Based on USGS...
Interpolating a consumption variable for scaling and generalizing potential population pressure on urbanizing natural areas
Dalia Varanka
Bin Jiang, Xiaobai Yao, editor(s)
2010, Book chapter, Geospatial Analysis and Modelling of Urban Structure and Dynamics
Measures of population pressure, referring in general to the stress upon the environment by human consumption of resources, are imperative for environmental sustainability studies and management. Development based on resource consumption is the predominant factor of population pressure. This paper presents a spatial model of population pressure by linking consumption...
Recent advances in global lake coring hold promise for global change research in paleolimnology
Walter E. Dean
2010, Journal of Paleontology (44) 741-743
No abstract available....
Guidelines for Standardized Testing of Broadband Seismometers and Accelerometers
Charles R. Hutt, John R. Evans, Fred Followill, Robert L. Nigbor, Erhard Wielandt
2010, Open-File Report 2009-1295
Testing and specification of seismic and earthquake-engineering sensors and recorders has been marked by significant variations in procedures and selected parameters. These variations cause difficulty in comparing such specifications and test results. In July 1989, and again in May 2005, the U.S. Geological Survey hosted international pub-lic/private workshops with the goal...
Teachers guide to geologic trails in Delaware Water Gap National Recreation Area, Pennsylvania–New Jersey
Jack B. Epstein
2010, GSA Field Guides (16) 127-147
The Delaware Water Gap National Recreation Area (DEWA) contains a rich geologic and cultural history within its 68,714 acre boundary. Following the border between New Jersey and Pennsylvania, the Delaware River has cut a magnificent gorge through Kittatinny Mountain, the Delaware Water Gap, to which all other gaps in the...
Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Estimated Mean Annual Natural Groundwater Recharge, 2002
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 490-22
This data set represents the mean annual natural groundwater recharge, in millimeters, compiled for every catchment of NHDPlus for the conterminous United States. The source data set is Estimated Mean Annual Natural Ground-Water Recharge in the Conterminous United States (Wolock, 2003). The NHDPlus Version 1.1 is an integrated suite of...
Integrated characterization of the Richelieu/Lake Champlain basin
A. Rivera, C. Rivard, M. Parent, N. Benoit, R. Lefebvre, M.A. Carrier, E. Gloaguen, Richard J. Reynolds, Thomas J. Mack, J.H. Williams, Y. H. Baevsky
2010, Conference Paper, 8th ISARM (Internationally Shared Aquifer Resources Management) - America workshop proceedings
No abstract available....
Attributes for NHDPlus catchments (version 1.1) for the conterminous United States: normalized atmospheric deposition for 2002, Total Inorganic Nitrogen
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 490-27
This data set represents the average normalized atmospheric (wet) deposition, in kilograms, of Total Inorganic Nitrogen for the year 2002 compiled for every catchment of NHDPlus for the conterminous United States. Estimates of Total Inorganic Nitrogen deposition are based on National Atmospheric Deposition Program (NADP) measurements (B. Larsen, U.S. Geological...
Hydraulic Property and Soil Textural Classification Measurements for Rainier Mesa, Nevada Test Site, Nevada
Brian A. Ebel, John R. Nimmo
2010, Open-File Report 2009-1264
This report presents particle size analysis, field-saturated hydraulic conductivity measurements, and qualitative descriptions of surficial materials at selected locations at Rainier Mesa, Nevada. Measurements and sample collection were conducted in the Rainier Mesa area, including unconsolidated sediments on top of the mesa, an ephemeral wash channel near the mesa edge,...
The Western Airborne Contaminant Assessment Project (WACAP): An interdisciplinary evaluation of the impacts of airborne contaminants in Western U.S. National Parks
Dixon H. Landers, Staci Massey Simonich, Daniel A. Jaffe, Linda Geiser, Donald H. Campbell, Adam R. Schwindt, Carl Schreck, Michael Kent, Will Hafner, Howard E. Taylor, Kimberly J. Hageman, Sasha Usenko, Luke Ackerman, Jill Schrlau, Neil Rose, Tamara Blett, Marilyn M. Erway
2010, Environmental Science and Technology (44) 855-859
The concept of a nature reserve such as a National Park is to maintain a location for the enjoyment and study of a pristine environment. However, many pollutants are now known to spread far and wide from their (point[s] of) origin. To grasp the extent of pervasive and boundary-less pollution,...
40Ar/39Ar dating of Silurian and late Devonian cleavages in lower greenschist-facies rocks in the Westminster terrane, Maryland, USA
R. P. Wintsch, Michael J. Kunk, Brian Mulvey, C. Scott Southworth
2010, GSA Bulletin (122) 658-677
40Ar/39Ar dating of muscovite, biotite, and K-feldspar combined with microstructural analysis of lower greenschist-facies, polymetamorphic, phyllitic rocks, and marbles were successfully used to decipher the thermal and tectonic histories of the Westminster and adjacent terranes in western Maryland. The presence of unreset detrital muscovite in some samples demonstrates that temperatures...
Environmental fate of Ra in cation-exchange regeneration brine waste disposed to septic tanks, New Jersey Coastal Plain, USA: migration to the water table
Zoltan Szabo, Eric Jacobsen, Thomas F. Kraemer, Bahman Parsa
2010, Journal of Environmental Radioactivity (101) 33-44
Fate of radium (Ra) in liquid regeneration brine wastes from water softeners disposed to septic tanks in the New Jersey Coastal Plain was studied. Before treatment, combined Ra (226Ra plus 228Ra) concentrations (maximum, 1.54 Bq L−1) exceeded the 0.185 Bq L−1 Maximum Contaminant Level in 4 of 10 studied domestic-well waters (median pH,...
Modeling migratory energetics of Connecticut River American shad (Alosa sapidissima): implications for the conservation of an iteroparous anadromous fish
Theodore Castro-Santos, Benjamin H. Letcher
2010, Canadian Journal of Fisheries and Aquatic Sciences (67) 806-830
We present a simulation model in which individual adult migrant American shad (Alosa sapidissima) ascend the Connecticut River and spawn, and survivors return to the marine environment. Our approach synthesizes bioenergetics, reproductive biology, and behavior to estimate the effects of migratory distance and delays...
The role of material properties in the cratering record of young platy-ridged lava on Mars
Colin M. Dundas, Laszlo P. Keszthelyi, Veronica J. Bray, Alfred S. McEwen
2010, Geophysical Research Letters (37) 1-5
Platy‐ridged surfaces in the Elysium Planitia region of Mars exhibit different crater densities on rafted plates and polygonally patterned areas between them. Rather than being indicative of different ages, these differences provide insight into the variable strength of different types of lava surface. The sizes of small craters, and the...
Historical arroyo formation: Documentation of magnitude and timing of historical changes using repeat photography
Robert H. Webb, Richard Hereford
Robert H. Webb, Diane E. Boyer, Raymond M. Turner, editor(s)
2010, Book chapter, Repeat photography: Methods and applications in the natural sciences
Vegetation of eastern Unalaska Island, Aleutian Islands, Alaska
Stephen S. Talbot, Wilfred B. Schofield, Sandra L. Talbot, Fred J.A. Daniels
2010, Botany (88) 366-388
Plant communities of Unalaska Island in the eastern Aleutian Islands of western Alaska, and their relationship to environmental variables, were studied using a combined Braun-Blanquet and multivariate approach. Seventy relevés represented the range of structural and compositional variation in the matrix of vegetation and landform zonation. Eleven major community types...
To reactivate or not to reactivate: nature and varied behavior of structural inheritance in the Proterozoic basement of the Eastern Colorado mineral belt over 1.7 billion years of earth history
Jonathan S. Caine, John Ridley, Zachary R. Wessel
2010, GSA Field Guides (18) 119-140
The eastern central Front Range of the Rocky Mountains in Colorado has long been a region of geologic interest because of Laramide-age hydrothermal polymetallic vein-related ores. The region is characterized by a well-exposed array of geologic structures associated with ductile and brittle deformation, which record crustal strain over 1.7 billion...
