Reversible reduction of estrone to 17β-estradiol by Rhizobium, Sphingopyxis, and Pseudomonas isolates from the Las Vegas Wash
Susanna M. Blunt, Mark J. Benotti, Michael R. Rosen, Brian Hedlund, Duane Moser
2017, Journal of Environmental Quality (46) 281-287
Environmental endocrine-disrupting compounds (EDCs) are a growing concern as studies reveal their persistence and detrimental effects on wildlife. Microorganisms are known to affect the transformation of steroid EDCs; however, the diversity of estrogen-degrading microorganisms and the range of transformations they mediate remain relatively little studied. In mesocosms, low concentrations of...
Groundwater flow model for the Little Plover River basin in Wisconsin’s Central Sands
Ken Bradbury, Michael N. Fienen, Maribeth Kniffin, Jacob Krause, Stephen M. Westenbroek, Andrew T. Leaf, Paul M. Barlow
2017, Bulletin 111
The Little Plover River is a groundwater-fed stream in the sand plains region of central Wisconsin. In this region, sandy sediment deposited during or soon after the last glaciation forms an important unconfined sand and gravel aquifer. This aquifer supplies water for numerous high-capacity irrigation, municipal, and industrial wells that...
Extent and persistence of secondary water quality impacts after enhanced reductive bioremediation
Robert C. Borden, Jason M. Tillotson, Gene-Hua Crystal Ng, Barbara A. Bekins, Douglas B. Kent, Gary P. Curtis
2017, Technical Report ER-2131
Electron donor (ED) addition can be very effective in stimulating enhanced reductive bioremediation (ERB) of a wide variety of groundwater contaminants. However, ERB can result in Secondary Water Quality Impacts (SWQIs) including decreased levels of dissolved oxygen (O2), nitrate (NO3- ), and sulfate (SO42- ), and elevated levels of dissolved...
An update of hydrologic conditions and distribution of selected constituents in water, eastern Snake River Plain aquifer and perched groundwater zones, Idaho National Laboratory, Idaho, emphasis 2012-15
Roy C. Bartholomay, Neil V. Maimer, Gordon W. Rattray, Jason C. Fisher
2017, Scientific Investigations Report 2017-5021
Since 1952, wastewater discharged to in ltration ponds (also called percolation ponds) and disposal wells at the Idaho National Laboratory (INL) has affected water quality in the eastern Snake River Plain (ESRP) aquifer and perched groundwater zones underlying the INL. The U.S. Geological Survey (USGS),...
Twentieth century warming of the tropical Atlantic captured by Sr-U paleothermometry
Alice E. Alpert, Anne L. Cohen, Delia W. Oppo, Thomas M. DeCarlo, Glenn A. Gaetani, Edwin A. Hernandez-Delgado, Amos Winter, Meagan Gonneea Eagle
2017, Paleoceanography (32) 146-160
Coral skeletons are valuable archives of past ocean conditions. However, interpretation of coral paleotemperature records is confounded by uncertainties associated with single-element ratio thermometers, including Sr/Ca. A new approach, Sr-U, uses U/Ca to constrain the influence of Rayleigh fractionation on Sr/Ca. Here we build on the initial Pacific Porites Sr-U...
Movement patterns and spatial segregation of two populations of lake trout Salvelinus namaycush in Lake Huron
Thomas Binder, J. Ellen Marsden, Stephen Riley, James E. Johnson, Nicholas S. Johnson, Ji He, Mark P. Ebener, Christopher M. Holbrook, Roger A. Bergstedt, Charles R. Bronte, Todd A. Hayden, Charles C. Krueger
2017, Journal of Great Lakes Research (43) 108-118
Movement ecology is an important component of life history and population dynamics, and consequently its understanding can inform successful fishery management decision-making. While lake trout populations in Lake Huron have shown signs of recovery from near extinction in recent years, knowledge of their movement behavior remains incomplete. We used acoustic...
The interaction of climate change and methane hydrates
Carolyn D. Ruppel, John D. Kessler
2017, Reviews of Geophysics (55) 126-168
Gas hydrate, a frozen, naturally-occurring, and highly-concentrated form of methane, sequesters significant carbon in the global system and is stable only over a range of low-temperature and moderate-pressure conditions. Gas hydrate is widespread in the sediments of marine continental margins and permafrost areas, locations where ocean and atmospheric warming may...
Summary of hydrologic conditions in Kansas, water year 2016
Justin M. Louen
2017, Fact Sheet 2017-3020
The U.S. Geological Survey (USGS), in cooperation with Federal, State, and local agencies, maintains a long-term network of hydrologic monitoring sites in Kansas. Real-time data are collected at 216 streamgage sites and are verified throughout the year with regular measurements of streamflow made by USGS personnel. Annual assessments of hydrologic...
Observations and a linear model of water level in an interconnected inlet-bay system
Alfredo Aretxabaleta, Neil K. Ganju, Bradford Butman, Richard P. Signell
2017, Journal of Geophysical Research C: Oceans (122) 2760-2780
A system of barrier islands and back-barrier bays occurs along southern Long Island, New York, and in many coastal areas worldwide. Characterizing the bay physical response to water level fluctuations is needed to understand flooding during extreme events and evaluate their relation to geomorphological changes. Offshore sea level is one...
Acute sensitivity of the vernal pool fairy shrimp, Branchinecta lynchi (Anostraca; Branchinectidae), and surrogate species to 10 chemicals
Chris D. Ivey, John M. Besser, Christopher G. Ingersoll, Ning Wang, D. Christopher Rogers, Sandy Raimondo, Candice R. Bauer, Edward J. Hammer
2017, Environmental Toxicology and Chemistry (36) 797-806
Vernal pool fairy shrimp, Branchinecta lynchi, (Branchiopoda; Anostraca) and other fairy shrimp species have been listed as threatened or endangered under the US Endangered Species Act. Because few data exist about the sensitivity of Branchinecta spp. to toxic effects of contaminants, it is difficult to determine whether they are adequately...
Legacy introductions and climatic variation explain spatiotemporal patterns of invasive hybridization in a native trout
Clint C. Muhlfeld, Ryan P. Kovach, Robert K. Al-Chokhachy, Stephen J. Amish, Jeffrey L. Kershner, Robb F. Leary, Winsor H. Lowe, Gordon Luikart, Phil Matson, David A. Schmetterling, Bradley B. Shepard, Peter A. H. Westley, Diane Whited, Andrew R. Whiteley, Fred W. Allendorf
2017, Global Change Biology (23) 4663-4674
Hybridization between invasive and native species, a significant threat to worldwide biodiversity, is predicted to increase due to climate-induced expansions of invasive species. Long-term research and monitoring are crucial for understanding the ecological and evolutionary processes that modulate the effects of invasive species. Using a large, multi-decade genetics dataset (N...
Brackish groundwater in the United States
Jennifer S. Stanton, David W. Anning, Craig J. Brown, Richard B. Moore, Virginia L. McGuire, Sharon L. Qi, Alta C. Harris, Kevin F. Dennehy, Peter B. McMahon, James R. Degnan, John Karl Bohlke
2017, Professional Paper 1833
For some parts of the Nation, large-scale development of groundwater has caused decreases in the amount of groundwater that is present in aquifer storage and that discharges to surface-water bodies. Water supply in some areas, particularly in arid and semiarid regions, is not adequate to meet demand, and...
Occurrence of neonicotinoid insecticides in finished drinking water and fate during drinking water treatment
Kathryn L. Klarich, Nicholas C. Pflug, Eden M. DeWald, Michelle L. Hladik, Dana W. Kolpin, David M. Cwiertny, Gergory H. LeFevre
2017, Environmental Science & Technology Letters (4) 173
Neonicotinoid insecticides are widespread in surface waters across the agriculturally-intensive Midwestern US. We report for the first time the presence of three neonicotinoids in finished drinking water and demonstrate their general persistence during conventional water treatment. Periodic tap water grab samples were collected at the University of Iowa over seven...
Water-quality trends in the nation’s rivers and streams, 1972–2012—Data preparation, statistical methods, and trend results
Gretchen P. Oelsner, Lori A. Sprague, Jennifer C. Murphy, Robert E. Zuellig, Henry M. Johnson, Karen R. Ryberg, James A. Falcone, Edward G. Stets, Aldo V. Vecchia, Melissa L. Riskin, Laura A. De Cicco, Taylor J. Mills, William H. Farmer
2017, Scientific Investigations Report 2017-5006
Since passage of the Clean Water Act in 1972, Federal, State, and local governments have invested billions of dollars to reduce pollution entering rivers and streams. To understand the return on these investments and to effectively manage and protect the Nation’s water resources in the future, we need to know...
Coastal river plumes: Collisions and coalescence
Jonathan A. Warrick, Katherine L Farnsworth
2017, Progress in Oceanography (151) 245-260
Plumes of buoyant river water spread in the ocean from river mouths, and these plumes influence water quality, sediment dispersal, primary productivity, and circulation along the world’s coasts. Most investigations of river plumes have focused on large rivers in a coastal region, for which the...
Implementation of the first adaptive management plan for a European migratory waterbird population: The case of the Svalbard pink-footed goose Anser brachyrhynchus
Jesper Madsen, James Henty Williams, Fred A. Johnson, Ingunn M. Tombre, Sergey Dereliev, Eckhart Kuijken
2017, Ambio (46) 275-289
An International Species Management Plan for the Svalbard population of the pink-footed goose was adopted under the Agreement on the Conservation of African-Eurasian Migratory Waterbirds in 2012, the first case of adaptive management of a migratory waterbird population in Europe. An international working group (including statutory agencies, NGO representatives and...
Erosion of refugia in the Sierra Nevada meadows network with climate change
Sean P. Maher, Toni Lyn Morelli, Michelle Hershey, Alan L. Flint, Lorraine E. Flint, Craig Moritz, Steven R. Beissinger
2017, Ecosphere (8) 1-17
Climate refugia management has been proposed as a climate adaptation strategy in the face of global change. Key to this strategy is identification of these areas as well as an understanding of how they are connected on the landscape. Focusing on meadows of the Sierra Nevada in California, we examined...
Trends in snowmelt-related streamflow timing in the conterminous United States
Robert W. Dudley, Glenn A. Hodgkins, Michael McHale, Michael J. Kolian, Benjamin Renard
2017, Journal of Hydrology (547) 208-221
Changes in snowmelt-related streamflow timing have implications for water availability and use as well as ecologically relevant shifts in streamflow. Historical trends in snowmelt-related streamflow timing (winter-spring center volume date, WSCVD) were computed for minimally disturbed river basins in the conterminous United States. WSCVD was computed by summing daily streamflow...
Geometry, mass balance and thinning at Eklutna Glacier, Alaska: an altitude-mass-balance feedback with implications for water resources
Louis C. Sass, Michael G. Loso, Jason Geck, Evan Thoms, Daniel Mcgrath
2017, Journal of Glaciology (63) 343-354
We analyzed glacier surface elevations (1957, 2010 and 2015) and surface mass-balance measurements (2008–2015) on the 30 km2 Eklutna Glacier, in the Chugach Mountains of southcentral Alaska. The geodetic mass balances from 1957 to 2010 and 2010 to 2015 are −0.52 ± 0.46 and −0.74 ± 0.10 m w.e. a<span...
Field-scale observations of a transient geobattery resulting from natural attenuation of a crude oil spill
Jeffrey Heenan, Dimitris Ntarlagiannis, Lee Slater, Carol Beaver, S. Rossbach, A. Revil, E.A. Atekwana, Barbara A. Bekins
2017, Journal of Geophysical Research G: Biogeosciences (122) 918-929
We present evidence of a geobattery associated with microbial degradation of a mature crude oil spill. Self-potential measurements were collected using a vertical array of nonpolarizing electrodes, starting at the land surface and passing through the smear zone where seasonal water table fluctuations have resulted in the coating of hydrocarbons...
Urbanization may limit impacts of an invasive predator on native mammal diversity
Brian E. Reichert, Adia R. Sovie, Brad J. Udell, Kristen M. Hart, Rena R. Borkhataria, Mathieu Bonneau, Robert Reed, Robert A. McCleery
2017, Diversity and Distributions (23) 355-367
AimOur understanding of the effects of invasive species on faunal diversity is limited in part because invasions often occur in modified landscapes where other drivers of community diversity can exacerbate or reduce the net impacts of an invader. Furthermore, rigorous assessments of the effects of invasive species on native communities...
The 3.6 ka Aniakchak tephra in the Arctic Ocean: A constraint on the Holocene radiocarbon reservoir age in the Chukchi Sea
Christof Pearce, Aron Varhelyi, Stefan Wastegard, Francesco Muschitiello, Natalia Barrientos Macho, Matt O’Regan, Thomas M. Cronin, Laura Gemery, Igor Semiletov, Jan Backman, Martin Jakobsson
2017, Climate of the Past (13) 303-316
The caldera-forming eruption of the Aniakchak volcano in the Aleutian Range on the Alaskan Peninsula at 3.6 cal kyr BP was one of the largest Holocene eruptions worldwide. The resulting ash is found as a visible sediment layer in several Alaskan sites and as a cryptotephra on Newfoundland and Greenland. This large...
Multiple models guide strategies for agricultural nutrient reductions
Donald Scavia, Margaret Kalcic, Rebecca Logsdon Muenich, Jennifer Read, Noel Aloysius, Isabella Bertani, Chelsie Boles, Remegio Confesor, Joseph DePinto, Marie Gildow, Jay Martin, Todd Redder, Dale M. Robertson, Scott P. Sowa, Yu-Chen Wang, Haw Yen
2017, Frontiers in Ecology and the Environment (15) 126-132
In response to degraded water quality, federal policy makers in the US and Canada called for a 40% reduction in phosphorus (P) loads to Lake Erie, and state and provincial policy makers in the Great Lakes region set a load-reduction target for the year 2025. Here, we configured five separate...
Spatiotemporal ecology of Apalone spinifera in a large, Great Plains river ecosystem
Brian J. Tornabene, Robert G. Bramblett, Alexander V. Zale, Stephen A. Leathe
2017, Herpetological Conservation and Biology (12) 252-271
Sparse information exists about the ecology of Spiny Softshell Turtles (Apalone spinifera) in large rivers, at the northwestern extent of their natural range, and in Montana, where they are disjunct from downstream populations and a State Species of Concern. We determined spatiotemporal ecology of 47 female and 12 male turtles...
Grand challenges in understanding the interplay of climate and land changes
Shuguang Liu, Ben Bond-Lamberty, Lena R. Boysen, James D. Ford, Andrew Fox, Kevin Gallo, Jerry L. Hatfield, Geoffrey M. Henebry, Thomas G. Huntington, Zhihua Liu, Thomas R. Loveland, Richard J. Norby, Terry L. Sohl, Allison L. Steiner, Wenping Yuan, Zhao Zhang, Shuqing Zhao
2017, Earth Interactions (21) 1-43
Half of Earth’s land surface has been altered by human activities, creating various consequences on the climate and weather systems at local to global scales, which in turn affect a myriad of land surface processes and the adaptation behaviors. This study reviews the status and major knowledge gaps in the...
