Mid-Piacenzian sea surface temperature record from ODP Site 1115 in the western equatorial Pacific
Danielle Stoll
2010, Stratigraphy (7) 1-6
Planktic foraminifer assemblages and alkenone unsaturation ratios have been analyzed for the mid-Piacen-zian (3.3 to 2.9 Ma) section of Ocean Drilling Program (ODP) Site 1115B, located in the western equatorial Pacific off the coast of New Guinea. Cold and warm season sea surface temperature (SST) estimates were determined using a...
Emerging viral diseases of fish and shrimp
James R. Winton, Peter J. Walker
2010, Veterinary Research (41) 51-75
The rise of aquaculture has been one of the most profound changes in global food production of the past 100 years. Driven by population growth, rising demand for seafood and a levelling of production from capture fisheries, the practice of farming aquatic animals has expanded rapidly to become a major...
Redox transformations and transport of cesium and iodine (-1, 0, +5) in oxidizing and reducing zones of a sand and gravel aquifer
Patricia M. Fox, Douglas B. Kent, James A. Davis
2010, Environmental Science & Technology (44) 1940-1946
Tracer tests were performed in distinct biogeochemical zones of a sand and gravel aquifer in Cape Cod, MA, to study the redox chemistry (I) and transport (Cs, I) of cesium and iodine in a field setting. Injection of iodide (I -) into an oxic zone of the aquifer resulted in...
Waterfowl ecology and avian influenza in california: Do host traits inform us about viral occurrence?
N.J. Hill, John Y. Takekawa, C.J. Cardona, Joshua T. Ackerman, A.K. Schultz, K.A. Spragens, W.M. Boyce
2010, Avian Diseases (54) 426-432
We examined whether host traits influenced the occurrence of avian influenza virus (AIV) in Anatidae (ducks, geese, swans) at wintering sites in California's Central Valley. In total, 3487 individuals were sampled at Sacramento National Wildlife Refuge and Conaway Ranch Duck Club during the hunting season of 2007-08. Of the 19...
Avian foods, foraging and habitat conservation in world rice fields
J.D. Stafford, R.M. Kaminski, K. J. Reinecke
2010, Waterbirds (33) 133-150
Worldwide, rice (Oryza sativa) agriculture typically involves seasonal flooding and soil tillage, which provides a variety of microhabitats and potential food for birds. Water management in rice fields creates conditions ranging from saturated mud flats to shallow (<30 cm) water, thereby attracting different guilds of birds. Grain not collected during...
Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: Average Saturation Excess-Overland Flow, 2002
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 491-24
This tabular data set represents the average value of saturation overland flow, in percent of total streamflow, compiled for every MRB_E2RF1 catchment of selected Major River Basins (MRBs, Crawford and others, 2006). The source data set is Saturation Overland Flow Estimated by TOPMODEL for the Conterminous United States (Wolock, 2003)....
Analyzing debris flows with the statistically calibrated empirical model LAHARZ in southeastern Arizona, USA
Christopher S. Magirl, Peter G. Griffiths, Robert H. Webb
2010, Geomorphology (119) 111-124
Hazard-zone delineation for extreme events is essential for floodplain management near mountain fronts in arid and semiarid regions. On 31 July 2006, unprecedented debris flows occurred in the Santa Catalina Mountains of southeastern Arizona following extreme multiday precipitation (recurrence interval > 1000 years for 4-day precipitation). Most mobilized sediment contributing to debris...
Novel silver tubing method for quantitative introduction of water into high temperature conversion systems for stable hydrogen and oxygen isotopic measurements
Haiping Qi, Manfred Groning, Tyler B. Coplen, Bryan Buck, Stanley J. Mroczkowski, Willi A. Brand, Heike Geilmann, Matthias Gehre
2010, Rapid Communications in Mass Spectrometry (24) 1821-1827
A new method to seal water in silver tubes for use in a TC/EA reduction unit using a semi-automated sealing apparatus can yield reproducibilities (1 standard deviation) of δ2H and &delta18O measurements of 1.0 ‰ and 0.06 ‰, respectively. These silver tubes containing reference waters may be preferred for calibration...
Book review: Hollowed ground—Copper mining and community building on Lake Superior, 1840s–1990s
Klaus J. Schulz
2010, Economic Geology (105) 1351-1354
In 1843, six years before the Forty-niners headed west for the goldfields of California, the United States’ first great mineral rush began to a land that was, as Patrick Henry told Congress, “beyond the most distant wilderness and remote as the moon.” He was referring to the Keweenaw Peninsula of...
Stochastic ecological network occupancy (SENO) models: a new tool for modeling ecological networks across spatial scales
Kevin D. Lafferty, Jennifer A. Dunne
2010, Theoretical Ecology (3) 123-135
Stochastic ecological network occupancy (SENO) models predict the probability that species will occur in a sample of an ecological network. In this review, we introduce SENO models as a means to fill a gap in the theoretical toolkit of ecologists. As input, SENO models use a topological interaction network and...
Effects of subsidized predators, resource variability, and human population density on desert tortoise populations in the Mojave Desert, USA
Todd C. Esque, Kenneth E. Nussear, K. Kristina Drake, Andrew D. Walde, Kristin H. Berry, Roy C. Averill-Murray, A. Peter Woodman, William I. Boarman, Phil A. Medica, Jeremy S. Mack, Jill S. Heaton
2010, Endangered Species Research (12) 167-177
Understanding predator–prey relationships can be pivotal in the conservation of species. For 2 decades, desert tortoise Gopherus agassizii populations have declined, yet quantitative evidence regarding the causes of declines is scarce. In 2005, Ft. Irwin National Training Center, California, USA, implemented a translocation project including 2 yr of baseline monitoring...
Source water controls on the character and origin of dissolved organic matter in streams of the Yukon River basin, Alaska
Jonathan A. O’Donnell, George R. Aiken, Evan S. Kane, Jeremy B. Jones
2010, Journal of Geophysical Research G: Biogeosciences (115) 1-12
Climate warming and permafrost degradation at high latitudes will likely impact watershed hydrology, and consequently, alter the concentration and character of dissolved organic carbon (DOC) in northern rivers. We examined seasonal variation of DOC chemistry in 16 streams of the Yukon River basin, Alaska. Our primary objective was to evaluate...
Juvenile salmonid collection efforts in the Upper Cowlitz River Basin
T.L. Liedtke, T.J. Kock, B.K. Ekstrom, I.M. Royer, D.W. Rondorf
2010, Report
n/a...
Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: Average Daily Minimum Temperature, 2002
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 491-30
This tabular data set represents the average daily minimum temperature in Celsius multiplied by 100 for 2002, compiled for every MRB_E2RF1 catchment of selected Major River Basins (MRBs, Crawford and others, 2006). The source data were the Near-Real-Time High-Resolution Monthly Average Maximum/Minimum Temperature for the Conterminous United States for 2002...
Historical deposition of mercury and selected trace elements to high-elevation National Parks in the Western U.S. inferred from lake-sediment cores
M. Alisa Mast, David J. Manthorne, David A. Roth
2010, Atmospheric Environment (44) 2577-2586
Atmospheric deposition of Hg and selected trace elements was reconstructed over the past 150 years using sediment cores collected from nine remote, high-elevation lakes in Rocky Mountain National Park in Colorado and Glacier National Park in Montana. Cores were age dated by 210Pb, and sedimentation rates were determined using the...
Multiple well-shutdown tests and site-scale flow simulation in fractured rocks
Claire R. Tiedeman, Pierre J. Lacombe, Daniel J. Goode
2010, Groundwater (48) 401-415
A new method was developed for conducting aquifer tests in fractured-rock flow systems that have a pump-and-treat (P&T) operation for containing and removing groundwater contaminants. The method involves temporary shutdown of individual pumps in wells of the P&T system. Conducting aquifer tests in this manner has several advantages, including (1)...
Mercury dynamics in relation to dissolved organic carbon concentration and quality during high flow events in three northeastern U.S. streams
Jason A. Dittman, James B. Shanley, Charles T. Driscoll, George R. Aiken, Ann T. Chalmers, Janet E. Towse, Pranesh Selvendiran
2010, Water Resources Research (46)
Mercury (Hg) contamination is widespread in remote areas of the northeastern United States. Forested uplands have accumulated a large reservoir of Hg in soil from decades of elevated anthropogenic deposition that can be released episodically to stream water during high flows. The objective of this study was to evaluate spatial...
Accuracy of egg flotation throughout incubation to determine embryo age and incubation day in waterbird nests
Joshua T. Ackerman, Collin A. Eagles-Smith
2010, The Condor (112) 438-446
Floating bird eggs to estimate their age is a widely used technique, but few studies have examined its accuracy throughout incubation. We assessed egg flotation for estimating hatch date, day of incubation, and the embryo's developmental age in eggs of the American Avocet (Recurvirostra americana), Black-necked Stilt (Himantopus mexicanus), and...
Invertebrate mercury bioaccumulation in permanent, seasonal, and flooded rice wetlands within California's Central Valley
Joshua T. Ackerman, A. Keith Miles, Collin A. Eagles-Smith
2010, Science of the Total Environment (408) 666-671
We examined methylmercury (MeHg) bioavailability in four of the most predominant wetland habitats in California's Central Valley agricultural region during the spring and summer: white rice, wild rice, permanent wetlands, and shallowly-flooded fallow fields. We sampled MeHg and total mercury (THg) concentrations in two aquatic macroinvertebrate taxa at the inlets,...
Minimizing effects of over-water docks on federally listed fish stocks in McNary Reservoir: A literature review for criteria
Dennis W. Rondorf, Gary L. Rutz, Jodi C. Charrier
2010, Report
McNary Lock and Dam were completed in 1953, creating McNary Reservoir, or Lake Wallula. The shoreline of the reservoir is federally owned and as a result the U.S. Army Corps of Engineers (USACE) has certain land and fish habitat management responsibilities to balance with other multipurpose benefits. The Endangered Species...
Guidelines for calculating and enhancing detection efficiency of PIT tag interrogation systems
Patrick J. Connolly
2010, PNAMP Special Publication 119-125
With increasing use of passive integrated transponder (PIT) tags and reliance on stationary PIT tag interrogation systems to monitor fish populations, guidelines are offered to inform users how best to use limited funding and human resources to create functional systems that maximize a desired level of detection and precision. The...
Fishing out marine parasites? Impacts of fishing on rates of parasitism in the ocean
Chelsea L. Wood, Kevin D. Lafferty, Fiorenza Micheli
2010, Ecology Letters (13) 761-775
Among anthropogenic effects on the ocean, fishing is one of the most pervasive and extends deepest into the past. Because fishing reduces the density of fish (reducing transmission efficiency of directly transmitted parasites), selectively removes large fish (which tend to carry more parasites than small fish), and reduces food web...
Saving our shared birds: Partners in Flight tri-national vision for landbird conservation
Humberto Berlanga, Judith A. Kennedy, Terrell D. Rich, Maria del Coro Arizmendi, Carol J. Beardmore, Peter J. Blancher, Gregory S. Butcher, Andrew R. Couturier, Ashley A. Dayer, Dean W. Demarest, Wendy E. Easton, Mary Gustafson, Eduardo E. Inigo-Elias, Elizabeth A. Krebs, Arvind O. Panjabi, Vicente Rodriguez Contreras, Kenneth V. Rosenberg, Janet M. Ruth, Eduardo Santana Castellon, Rosa Vidal, Tom Will
2010, Report
Landbirds are the most abundant and diverse group of birds in North America, with nearly 900 species distributed across every major terrestrial habitat. Birds are indicators of environmental health; their populations track changes in habitat, water, disease, and climate. They are providers of invaluable ecosystem services, such as pest control,...
Studies from the history of soil science and geology
Edward R. Landa, Benjamin R. Cohen
2010, Physics and Chemistry of the Earth, Parts A/B/C (35) 849-850
The United Nations proclaimed the year 2008 as the official International Year of Planet Earth (IYPE), with science and outreach activities spanning 2007–2009. IYPE-sponsored outreach helped focus the attention of the general public on topics such as human health and the environment; ocean and natural resources sustainability; mitigating natural hazards...
In vitro studies evaluating leaching of mercury from mine waste calcine using simulated human body fluids
John E. Gray, Geoffrey S. Plumlee, Suzette A. Morman, Pablo L. Higueras, James G. Crock, Heather A. Lowers, Mark L. Witten
2010, Environmental Science & Technology (44) 4782-4788
In vitro bioaccessibility (IVBA) studies were carried out on samples of mercury (Hg) mine-waste calcine (roasted Hg ore) by leaching with simulated human body fluids. The objective was to estimate potential human exposure to Hg due to inhalation of airborne calcine particulates and hand-to-mouth ingestion of Hg-bearing calcines. Mine waste...
