Hierarchical model analysis of the Atlantic Flyway Breeding Waterfowl Survey
John R. Sauer, Guthrie S. Zimmerman, Jon D. Klimstra, William A. Link
2014, Journal of Wildlife Management (78) 1050-1059
We used log-linear hierarchical models to analyze data from the Atlantic Flyway Breeding Waterfowl Survey. The survey has been conducted by state biologists each year since 1989 in the northeastern United States from Virginia north to New Hampshire and Vermont. Although yearly population estimates from the survey are used by...
Dissolved organic carbon concentration controls benthic primary production: results from in situ chambers in north-temperate lakes
Sean C. Godwin, Stuart E. Jones, Brian Weidel, Christopher T. Solomon
2014, Limnology and Oceanography (59) 2112-2120
We evaluated several potential drivers of primary production by benthic algae (periphyton) in north-temperate lakes. We used continuous dissolved oxygen measurements from in situ benthic chambers to quantify primary production by periphyton at multiple depths across 11 lakes encompassing a broad range of dissolved organic carbon (DOC) and total phosphorous...
Habitat structure and body size distributions: Cross-ecosystem comparison for taxa with determinate and indeterminate growth
Kirsty L. Nash, Craig R. Allen, Chris Barichievy, Magnus Nystrom, Shana M. Sundstrom, Nicholas A.J. Graham
2014, Oikos (123) 971-983
Habitat structure across multiple spatial and temporal scales has been proposed as a key driver of body size distributions for associated communities. Thus, understanding the relationship between habitat and body size is fundamental to developing predictions regarding the influence of habitat change on animal communities. Much of the work assessing...
NGA-West2 Research Project
Yousef Bozorgnia, Norman A. Abrahamson, Linda Al Atik, Timothy D. Ancheta, Gail M. Atkinson, Jack W. Baker, Annemarie S. Baltay Sundstrom, David M. Boore, Kenneth W. Campbell, Brian S.J. Chiou, Robert B. Darragh, Steve Day, Jennifer Donahue, Robert W. Graves, Nick Gregor, Thomas C. Hanks, I. M. Idriss, Ronnie Kamai, Tadahiro Kishida, Albert Kottke, Stephen A. Mahin, Sanaz Rezaeian, Badie Rowshandel, Emel Seyhan, Shrey Shahi, Tom Shantz, Walter Silva, Paul A. Spudich, Jonathan P. Stewart, Jennie Watson-Lamprey, Kathryn Wooddell, Robert Youngs
2014, Earthquake Spectra (30) 973-987
The NGA-West2 project is a large multidisciplinary, multi-year research program on the Next Generation Attenuation (NGA) models for shallow crustal earthquakes in active tectonic regions. The research project has been coordinated by the Pacific Earthquake Engineering Research Center (PEER), with extensive technical interactions among many individuals and organizations. NGA-West2 addresses...
Bringing an ecological view of change to Landsat-based remote sensing
Robert E. Kennedy, Serge Andrefouet, Warren Cohen, Cristina Gomez, Patrick Griffiths, Martin Hais, Sean Healey, Eileen H. Helmer, Patrick Hostert, Mitchell Lyons, Garrett Meigs, Dirk Pflugmacher, Stuart Phinn, Scott Powell, Peter Scarth, Sen Susmita, Todd A. Schroeder, Annemarie Schneider, Ruth Sonnenschein, James Vogelmann, Michael A. Wulder, Zhe Zhu
2014, Frontiers in Ecology and the Environment (12) 339-346
When characterizing the processes that shape ecosystems, ecologists increasingly use the unique perspective offered by repeat observations of remotely sensed imagery. However, the concept of change embodied in much of the traditional remote-sensing literature was primarily limited to capturing large or extreme changes occurring in natural systems, omitting many more...
Pharmacokinetics of buprenorphine hydrochloride following intramuscular and intravenous administration to American kestrels (Falco sparverius)
Kate A. Gustavsen, David Sanchez-Migallon Guzman, Heather K. Knych, Olivia A. Petritz, Glenn H. Olsen, Joanne R. Paul-Murphy
2014, American Journal of Veterinary Research (75) 711-715
Objective—To determine the pharmacokinetics of buprenorphine hydrochloride after IM and IV administration to American kestrels (Falco sparverius). Animals—13 healthy 3-year-old captive-bred American kestrels. Procedures—Buprenorphine hydrochloride (0.6 mg/kg) was administered IM to all birds. Blood samples were collected at 9 times, ranging from 5 minutes to 9 hours after drug administration. Plasma...
Coastal circulation and water-column properties in the War in the Pacific National Historical Park, Guam: measurements and modeling of waves, currents, temperature, salinity, and turbidity, April-August 2012
Curt D. Storlazzi, Olivia M. Cheriton, Jamie M.R. Lescinski, Joshua B. Logan
2014, Open-File Report 2014-1130
The U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center (PCMSC) initiated an investigation in the National Park Service’s (NPS) War in the Pacific National Historical Park (WAPA) to provide baseline scientific information on coastal circulation and water-column properties along west-central Guam, focusing on WAPA’s Agat Unit, as it...
Crustal structure beneath the Paleozoic Parnaíba Basin revealed by airborne gravity and magnetic data, Brazil
David L. de Castro, Reinhardt A. Fuck, Jeffrey D. Phillips, Roberta M. Vidotti, Francisco H. R. Bezerra, Elton L. Dantas
2014, Tectonophysics (614) 128-145
The Parnaíba Basin is a large Paleozoic syneclise in northeastern Brazil underlain by Precambrian crystalline basement, which comprises a complex lithostructural and tectonic framework formed during the Neoproterozoic–Eopaleozoic Brasiliano–Pan African orogenic collage. A sag basin up to 3.5 km thick and 1000 km long formed after the collage. The lithologic...
Synthesis of studies in the fall low-salinity zone of the San Francisco Estuary, September-December 2011
Larry R. Brown, Randall Baxter, Gonzalo Castillo, Louise Conrad, Steven Culberson, Gregg Erickson, Frederick Feyrer, Stephanie Fong, Karen Gehrts, Lenny Grimaldo, Bruce Herbold, Joseph Kirsch, Anke Mueller-Solger, Steven B. Slater, Ted Sommer, Kelly Souza, Erwin Van Nieuwenhuyse
2014, Scientific Investigations Report 2014-5041
In fall 2011, a large-scale investigation (fall low-salinity habitat investigation) was implemented by the Bureau of Reclamation in cooperation with the Interagency Ecological Program to explore hypotheses about the ecological role of low-salinity habitat in the San Francisco Estuary—specifically, hypotheses about the importance of fall low-salinity habitat to the biology...
Migration, foraging, and residency patterns for Northern Gulf loggerheads: implications of local threats and international movements
Kristen M. Hart, Margaret M. Lamont, Autumn R. Sartain-Iverson, Ikuko Fujisaki
2014, PLoS ONE (9)
Northern Gulf of Mexico (NGoM) loggerheads (Caretta caretta) make up one of the smallest subpopulations of this threatened species and have declining nest numbers. We used satellite telemetry and a switching state-space model to identify distinct foraging areas used by 59 NGoM loggerheads tagged during 2010–2013. We tagged turtles after...
Sulfur isotope fractionation between fluid and andesitic melt: An experimental study
Adrian Fiege, Francois Holtz, Nobumichi Shimizu, Charlie Mandeville, Harald Behrens, Jaayke L. Knipping
2014, Geochimica et Cosmochimica Acta (142) 501-521
Glasses produced from decompression experiments conducted by Fiege et al. (2014a) were used to investigate the fractionation of sulfur isotopes between fluid and andesitic melt upon magma degassing. Starting materials were synthetic glasses with a composition close to a Krakatau dacitic andesite. The glasses contained 4.55–7.95 wt% H2O, ∼140 to...
Effects of hydrologic modifications on salinity and formation of hypoxia in the Mississippi River-Gulf Outlet and adjacent waterways, southeastern Louisiana, 2008 to 2012
Christopher M. Swarzenski, Scott V. Mize
2014, Scientific Investigations Report 2014-5077
The Mississippi River-Gulf Outlet (MRGO) was constructed between 1958 and 1968 to provide a safer and shorter route between the Gulf of Mexico and the Port of New Orleans for ocean-going vessels. In 2006, the U.S. Congress directed the U.S. Army Corps of Engineers (USACE) to develop and implement a...
Whiting events in SW Florida coastal waters: a case study using MODIS medium-resolution data
Jacqueline Long, Chuanmin Hu, Lisa Robbins
2014, Remote Sensing Letters (5) 539-547
Whitings, floating patches of calcium carbonate mud, have been found in both shallow carbonate banks and freshwater environments around the world. Although these events have been studied for many decades, much of their characteristics remain unknown. Recent sightings of whitings near Ten Thousand Islands, Florida suggest a phenomenon that has...
The Early Jurassic Bokan Mountain peralkaline granitic complex (southeastern Alaska): geochemistry, petrogenesis and rare-metal mineralization
Jaroslav Dostal, Daniel J. Kontak, Susan M. Karl
2014, LITHOS (202-203) 395-412
The Early Jurassic (ca. 177 Ma) Bokan Mountain granitic complex, located on southern Prince of Wales Island, southernmost Alaska, cross-cuts Paleozoic igneous and metasedimentary rocks of the Alexander terrane of the North American Cordillera and was emplaced during a rifting event. The complex is a circular body (~3 km in...
The rock coast of the USA
Cheryl J. Hapke, Peter N. Adams, Jonathan Allan, Andrew Ashton, Gary B. Griggs, Monty A. Hampton, Joseph Kelly, Adam P. Young
2014, Book chapter, Rock coast geomorphology
The coastline of the USA is vast and comprises a variety of landform types including barrier islands, mainland beaches, soft bluffed coastlines and hard rocky coasts. The majority of the bluffed and rocky coasts are found in the northeastern part of the country (New England) and along the Pacific coast....
Precipitation isotopes link regional climate patterns to water supply in a tropical mountain forest, eastern Puerto Rico
Martha A. Scholl, Sheila F. Murphy
2014, Water Resources Research (50) 4305-4322
Like many mountainous areas in the tropics, watersheds in the Luquillo Mountains of eastern Puerto Rico have abundant rainfall and stream discharge and provide much of the water supply for the densely populated metropolitan areas nearby. Projected changes in regional temperature and atmospheric dynamics as a result of global warming...
Identifying dominant controls on hydrologic parameter transfer from gauged to ungauged catchments: a comparative hydrology approach
R. Singh, S.A. Archfield, T. Wagener
2014, Journal of Hydrology (517) 985-996
Daily streamflow information is critical for solving various hydrologic problems, though observations of continuous streamflow for model calibration are available at only a small fraction of the world’s rivers. One approach to estimate daily streamflow at an ungauged location is to transfer rainfall–runoff model parameters calibrated at a gauged (donor)...
Identification of Mn(II)-oxidizing bacteria from a low-pH contaminated former uranium mine
Denise M. Akob, Tsing Bohu, Andrea Beyer, Franziska Schaffner, Matthias Handel, Carol A. Johnson, Dirk Merten, Georg Büchel, Kai Uwe Totsche, Kirsten Küsel
2014, Applied and Environmental Microbiology (80) 5086-5097
Biological Mn oxidation is responsible for producing highly reactive and abundant Mn oxide phases in the environment that can mitigate metal contamination. However, little is known about Mn oxidation in low-pH environments, where metal contamination often is a problem as the result of mining activities. We isolated two Mn(II)-oxidizing bacteria...
Asphaltene content and composition as a measure of Deepwater Horizon oil spill losses within the first 80 days
M. D. Lewan, A. Warden, R.F. Dias, Z.K. Lowry, T.L. Hannah, P. G. Lillis, R.F. Kokaly, T.M. Hoefen, G.A. Swayze, C.T. Mills, S.H. Harris, G.S. Plumlee
2014, Organic Geochemistry (75) 54-60
The composition and content of asphaltenes in spilled and original wellhead oils from the Deepwater Horizon (DWH) incident provide information on the amount of original oil lost and the processes most responsible for the losses within the first 80 days of the active spill. Spilled oils were collected from open...
The southern megalopolis: using the past to predict the future of urban sprawl in the Southeast U.S.
Adam Terando, Jennifer Costanza, Curtis Belyea, Robert R. Dunn, Alexa McKerrow, Jaime Collazo
2014, PLoS ONE (9)
The future health of ecosystems is arguably as dependent on urban sprawl as it is on human-caused climatic warming. Urban sprawl strongly impacts the urban ecosystems it creates and the natural and agro-ecosystems that it displaces and fragments. Here, we project urban sprawl changes for the next 50 years for...
Changing amounts and sources of moisture in the U.S. southwest since the Last Glacial Maximum in response to global climate change
Weimin Feng, Benjamin F. Hardt, Jay L. Banner, Kevin J. Meyer, Eric W. James, MaryLynn Musgrove, R. Lawrence Edwards, Hai Cheng, Angela Min
2014, Earth and Planetary Science Letters (401) 47-56
The U.S. southwest has a limited water supply and is predicted to become drier in the 21st century. An improved understanding of factors controlling moisture sources and availability is aided by reconstruction of past responses to global climate change. New stable isotope and growth-rate records for a central Texas speleothem...
Colorado River campsite monitoring, Grand Canyon National Park, Arizona, 1998-2012
Matt Kaplinski, Joe Hazel, Rod Parnell, Daniel R. Hadley, Paul Grams
2014, Open-File Report 2014-1161
River rafting trips and hikers use sandbars along the Colorado River in Marble and Grand Canyons as campsites. The U.S. Geological Survey evaluated the effects of Glen Canyon Dam operations on campsite areas on sandbars along the Colorado River in Grand Canyon National Park. Campsite area was measured annually from...
SAFRR tsunami scenario: Impacts on California ecosystems, species, marine natural resources, and fisheries
Deborah Brosnan, Anne Wein, Rick Wilson
Stephanie L. Ross, Lucile Jones, editor(s)
2014, Open-File Report 2013-1170-G
We evaluate the effects of the SAFRR Tsunami Scenario on California’s ecosystems, species, natural resources, and fisheries. We discuss mitigation and preparedness approaches that can be useful in Tsunami planning. The chapter provides an introduction to the role of ecosystems and natural resources in tsunami events (Section 1). A separate...
Imaging P and S attenuation in the Sacramento-San Joaquin Delta region, northern California
Donna Eberhart-Phillips, Clifford Thurber, Jon Peter B. Fletcher
2014, Bulletin of the Seismological Society of America (104) 2322-2336
We obtain 3-D Qp and Qs models for the Delta region of the Sacramento and San Joaquin Rivers, a large fluvial-agricultural portion of the Great Valley located between the Sierra Nevada batholith and the San Francisco Bay - Coast Ranges region of active faulting. Path attenuation t* values have been...
Occurrence and transport of nitrogen in the Big Sunflower River, northwestern Mississippi, October 2009-June 2011
Jeannie R.B. Barlow, Richard H. Coupe
2014, Scientific Investigations Report 2014-5107
The Big Sunflower River Basin, located within the Yazoo River Basin, is subject to large annual inputs of nitrogen from agriculture, atmospheric deposition, and point sources. Understanding how nutrients are transported in, and downstream from, the Big Sunflower River is key to quantifying their eutrophying effects on the Gulf. Recent...
