Measurements of seepage losses and gains, East Maui Irrigation diversion system, Maui, Hawaiʻi
Chui Ling Cheng
2012, Open-File Report 2012-1115
The U.S. Geological Survey conducted a field study from March to October 2011 to identify ditch characteristics and quantify seepage losses and gains in the East Maui Irrigation (EMI) diversion system, east Maui, Hawaiʻi. The EMI diversion system begins at Makapipi Stream in the east and ends at Māliko Gulch...
Migratory flyway and geographical distance are barriers to the gene flow of influenza virus among North American birds
Tommy Tsan-Yuk Lam, S. Ip, E. Ghedin, David E. Wentworth, Rebecca A. Halpin, T. B. Stockwell, Robert J. Dusek, James B. Bortner, Jenny Hoskins, Bradley D. Bales, Daniel R. Yparraguirre, E. C. Holmes
2012, Ecology Letters (15) 24-33
Despite the importance of migratory birds in the ecology and evolution of avian influenza virus (AIV), there is a lack of information on the patterns of AIV spread at the intra‐continental scale. We applied a variety of statistical phylogeographic techniques to a plethora of viral genome sequence data to determine...
A modeling framework for integrated harvest and habitat management of North American waterfowl: Case-study of northern pintail metapopulation dynamics
Brady J. Mattsson, Michael C. Runge, J.H. Devries, G.S. Boomer, J.M. Eadie, D.A. Haukos, J. P. Fleskes, D. N. Koons, Wayne E. Thogmartin, R. G. Clark
2012, Ecological Modelling (225) 146-158
We developed and evaluated the performance of a metapopulation model enabling managers to examine, for the first time, the consequences of alternative management strategies involving habitat conditions and hunting on both harvest opportunity and carrying capacity (i.e., equilibrium population size in the absence of harvest) for migratory waterfowl at a...
Results of paleoflood investigations for Spring, Rapid, Boxedler, and Elk Creeks, Black Hills, western South Dakota
Daniel G. Driscoll, James E. O'Connor, Tessa M. Harden
2012, Book
Flood-frequency analyses for the Black Hills area are especially important because of severe flooding of June 9–10, 1972, that was caused by a large mesoscale convective system and resulted in at least 238 deaths. This paper summarizes results of paleoflood investigations for six study reaches in the central Black Hills....
Comparison of TOPMODEL streamflow simulations using NEXRAD-based and measured rainfall data, McTier Creek watershed, South Carolina
Toby D. Feaster, Nancy E. Westcott, Robert J.M. Hudson, Paul Conrads, Paul M. Bradley
2012, Scientific Investigations Report 2012-5120
Rainfall is an important forcing function in most watershed models. As part of a previous investigation to assess interactions among hydrologic, geochemical, and ecological processes that affect fish-tissue mercury concentrations in the Edisto River Basin, the topography-based hydrological model (TOPMODEL) was applied in the McTier Creek watershed in Aiken County,...
Groundwater quality and simulation of sources of water to wells in the Marsh Creek valley at the U.S. Geological Survey Northern Appalachian Research Laboratory, Tioga County, Pennsylvania
Dennis W. Risser, Kevin J. Breen
2012, Scientific Investigations Report 2012-5042
This report provides a November 2010 snapshot of groundwater quality and an analysis of the sources of water to wells at the U.S. Geological Survey (USGS) Northern Appalachian Research Laboratory (NARL) near Wellsboro, Pennsylvania. The laboratory, which conducts fisheries research, currently (2011) withdraws 1,000 gallons per minute of high-quality groundwater...
Local-area-enhanced, 2.5-meter resolution natural-color and color-infrared satellite-image mosaics of the Khanneshin mineral district in Afghanistan: Chapter A in Local-area-enhanced, high-resolution natural-color and color-infrared satellite-image mosaics of mineral districts in Afghanistan
Philip A. Davis, Laura E. Cagney, Scott A. Arko, Michelle L. Harbin
2012, Data Series 709-A
The U.S. Geological Survey (USGS), in cooperation with the U.S. Department of Defense Task Force for Business and Stability Operations, prepared databases for mineral-resource target areas in Afghanistan. The purpose of the databases is to (1) provide useful data to ground-survey crews for use in performing detailed assessments of the...
Podiform chromite deposits--database and grade and tonnage models
Dan L. Mosier, Donald A. Singer, Barry C. Moring, John P. Galloway
2012, Scientific Investigations Report 2012-5157
Chromite ((Mg, Fe++)(Cr, Al, Fe+++)2O4) is the only source for the metallic element chromium, which is used in the metallurgical, chemical, and refractory industries. Podiform chromite deposits are small magmatic chromite bodies formed in the ultramafic section of an ophiolite complex in the oceanic crust. These deposits have been found...
Tectonic setting of the Wooded Island earthquake swarm, eastern Washington
Richard J. Blakely, Brian L. Sherrod, Craig S. Weaver, Alan C. Rohay, Ray E. Wells
2012, Bulletin of the Seismological Society of America (102) 1786-1795
Magnetic anomalies provide insights into the tectonic implications of a swarm of ~1500 shallow (~1 km deep) earthquakes that occurred in 2009 on the Hanford site,Washington. Epicenters were concentrated in a 2 km2 area nearWooded Island in the Columbia River. The largest earthquake (M 3.0) had first motions consistent with...
Foraminiferal repopulation of the late Eocene Chesapeake Bay impact crater
C. Wylie Poag
2012, Micropaleontology (58)
The Chickahominy Formation is the initial postimpact deposit in the 85km-diameter Chesapeake Bay impact crater, which is centered under the town of Cape Charles, Virginia, USA. The formation comprises dominantly microfossil-rich, silty, marine clay, which accumulated during the final ~1.6myr of late Eocene time. At cored sites, the Chickahominy Formation...
Geologic and mineralogic controls on acid and metal-rich rock drainage in an alpine watershed, Handcart Gulch, Colorado
Dana J. Bove, Jonathan S. Caine, Heather Lowers
2012, Scientific Investigations Report 2012-5067
The surface and subsurface geology, hydrothermal alteration, and mineralogy of the Handcart Gulch area was studied using map and drill core data as part of a multidisciplinary approach to understand the hydrology and affects of geology on acid-rock drainage in a mineralized alpine watershed. Handcart Gulch was the locus of...
Estimation of natural historical flows for the Manitowish River near Manitowish Waters, Wisconsin
Paul F. Juckem, Paul C. Reneau, Dale M. Robertson
2012, Scientific Investigations Report 2012-5135
The Wisconsin Department of Natural Resources is charged with oversight of dam operations throughout Wisconsin and is considering modifications to the operating orders for the Rest Lake Dam in Vilas County, Wisconsin. State law requires that the operation orders be tied to natural low flows at the dam. Because the...
Near-field receiving water monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in south San Francisco Bay, California: 2011
Jessica Dyke, Janet K. Thompson, Daniel J. Cain, Amy E. Kleckner, Francis Parcheso, Samuel N. Luoma, Michelle I. Hornberger
2012, Open-File Report 2012-1165
Trace-metal concentrations in sediment and in the clam Macoma petalum (formerly reported as Macoma balthica), clam reproductive activity, and benthic macroinvertebrate community structure were investigated in a mudflat 1 kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant (PARWQCP) in South San Francisco Bay, Calif....
Development and application of a groundwater/surface-water flow model using MODFLOW-NWT for the Upper Fox River Basin, southeastern Wisconsin
D. T. Feinstein, M.N. Fienen, J.L. Kennedy, C.A. Buchwald, M.M. Greenwood
2012, Scientific Investigations Report 2012-5108
The Fox River is a 199-mile-long tributary to the Illinois River within the Mississippi River Basin in the states of Wisconsin and Illinois. For the purposes of this study the Upper Fox River Basin is defined as the topographic basin that extends from the upstream boundary of the Fox River...
Changes in avian and plant communities of aspen woodlands over 12 years after livestock removal in the northwestern Great Basin
Susan L. Earnst, David S. Dobkin, Jennifer A. Ballard
2012, Conservation Biology (26) 862-872
Riparian and quaking aspen (Populus tremuloides) woodlands are centers of avian abundance and diversity in the western United States, but they have been affected adversely by land use practices, particularly livestock grazing. In 1990, cattle were removed from a 112,500-ha national wildlife refuge in southeastern Oregon. Thereafter, we monitored changes...
Nile Delta vegetation response to Holocene climate variability
Christopher E. Bernhardt, Benjamin P. Horton, Jean-Daniel Stanley
2012, Geology (40) 615-618
A 7000 yr palynologic record from Burullus Lagoon, Nile Delta, Egypt, is assessed to investigate changes in terrestrial vegetation in response to Nile flow. Previous studies in this region have shown that sea-level rise in the early to mid-Holocene, and markedly increased human land use during the past several centuries,...
Monitoring that matters
Douglas H. Johnson
Robert A. Gitzen, Joshua J. Millspaugh, Andrew B. Cooper, Daniel S. Licht, editor(s)
2012, Book chapter, Design and analysis of long-term ecological monitoring studies
Monitoring is a critically important activity for assessing the status of a system, such as the health of an individual, the balance in one's checking account, profits and losses of a business, the economic activity of a nation, or the size of an animal population. Monitoring is especially vital for...
A modified night-netting technique for recapturing quail
Ronald J. Troy, Peter S. Coates, John W. Connelly, Gifford Gillette, David J. Delehanty
2012, Wildlife Society Bulletin (36) 578-581
Difficulties in recapturing radiomarked birds often prevent wildlife researchers from replacing transmitters and continuing to collect data over long time periods. We developed an effective, inexpensive capture technique for radiomarked mountain quail (Oreortyx pictus). Twenty-three of 25 mountain quail in south-central Idaho, USA, in 2006 and 2007 were recaptured for...
Tampa Bay coastal wetlands: nineteenth to twentieth century tidal marsh-to-mangrove conversion
Ellen A. Raabe, Laura C. Roy, Carole C. McIvor
2012, Estuaries and Coasts (35) 1145-1162
Currently, mangroves dominate the tidal wetlands of Tampa Bay, Florida, but an examination of historic navigation charts revealed dominance of tidal marshes with a mangrove fringe in the 1870s. This study's objective was to conduct a new assessment of wetland change in Tampa Bay by digitizing nineteenth century topographic and...
Benthic community structure and composition in sediment from the northern Gulf of Mexico shoreline, Texas to Florida
Amanda W.J. Demopoulos, Douglas G. Strom
2012, Open-File Report 2012-1153
From April 20 through July 15, 2010, approximately 4.93 million barrels of crude oil spilled into the Gulf of Mexico from the British Petroleum Macondo-1 well, representing the largest spill in U.S. waters. Baseline benthic community conditions were assessed from shoreline sediment samples collected from 56 stations within the swash...
In situ determination of flocculated suspended material settling velocities and characteristics using a floc camera
David H. Schoellhamer, Dan Haught, Andrew Manning
2012, Conference Paper
Estimates of suspended sediment settling are necessary for numerical sediment models, water quality studies, and rehabilitation of coastal ecosystems. Settling of cohesive sediment, which is common in estuaries, is more difficult to quantify than noncohesive sediment because of flocculation. Flocs are composed of an aggregation of finer silts, clays, and...
Shifting species interactions in terrestrial dryland ecosystems under altered water availability and climate change
Kevin E. McCluney, Jayne Belnap, Scott L. Collins, Angelica L. Gonzalez, Elizabeth M. Hagen, J. Nathaniel Holland, Burt P. Kotler, Fernando T. Maestre, Stanley D. Smith, Blair O. Wolf
2012, Biological Reviews (87) 563-582
Species interactions play key roles in linking the responses of populations, communities, and ecosystems to environmental change. For instance, species interactions are an important determinant of the complexity of changes in trophic biomass with variation in resources. Water resources are a major driver of terrestrial ecology and climate change is...
Hydrology and modeling of flow conditions at Bridge 339 and Mile 38-43, Copper River Highway, Alaska
Timothy P. Brabets
2012, Scientific Investigations Report 2012-5153
The Copper River basin, the sixth largest watershed in Alaska, drains an area of 24,200 square miles in south-central Alaska. This large, glacier-fed river flows across a wide alluvial fan before it enters the Gulf of Alaska. The Copper River Highway, which traverses the alluvial fan, has been affected by...
Groundwater-quality data in the Borrego Valley, Central Desert, and Low-Use Basins of the Mojave and Sonoran Deserts study unit, 2008-2010--Results from the California GAMA Program
Timothy M. Mathany, Michael T. Wright, Brandon S. Beuttel, Kenneth Belitz
2012, Data Series 659
Groundwater quality in the 12,103-square-mile Borrego Valley, Central Desert, and Low-Use Basins of the Mojave and Sonoran Deserts (CLUB) study unit was investigated by the U.S. Geological Survey (USGS) from December 2008 to March 2010, as part of the California State Water Resources Control Board (SWRCB) Groundwater Ambient Monitoring and...
Sinks for nitrogen inputs in terrestrial ecosystems: a meta-analysis of 15N tracer field studies
P.H. Templer, M.C. Mack, F. S. Chapin III, L.M. Christenson, J.E. Compton, H.D. Crook, W.S. Currie, C.J. Curtis, D.B. Dail, C. M. D’Antonio, B.A. Emmett, H.E. Epstein, C.L. Goodale, P. Gundersen, S.E. Hobbie, K. Holland, D.U. Hooper, B.A. Hungate, S. Lamontagne, K.J. Nadelhoffer, C.W. Osenberg, S.S. Perakis, P. Schleppi, J. Schimel, I.K. Schmidt, M. Sommerkorn, J. Spoelstra, A. Tietema, W.W. Wessel, D.R. Zak
2012, Ecology (93) 1816-1829
Effects of anthropogenic nitrogen (N) deposition and the ability of terrestrial ecosystems to store carbon (C) depend in part on the amount of N retained in the system and its partitioning among plant and soil pools. We conducted a meta-analysis of studies at 48 sites across four continents that used...
