Occurrence and effects of endocrine-disrupting chemicals in the St. Croix River
Sarah M. Elliott, Kathy Lee
2016, Report
The St. Croix River is one of the last undisturbed, large floodplain rivers in the upper Mississippi River System. The Saint Croix National Scenic Riverway encompasses 255 river miles from the St. Croix Flowage and Namekagon River to the confluence of the St. Croix River with the Mississippi River at...
Development of a Kemp’s ridley sea turtle stock assessment model
Benny J. Gallaway, William Gazey, Charles W. Caillouet Jr., Pamela T. Plotkin, F. Alberto Abreu Grobois, Anthony F. Amos, Patrick M. Burchfield, Raymond R. Carthy, Marco A. Castro Martinez, John G. Cole, Andrew T. Coleman, Melissa Cook, Steven F. DiMarco, Sheryan P. Epperly, Masami Fujiwara, Daniel Gomez Gamez, Gary L. Graham, Wade L. Griffin, Francisco Illescas Martinez, Margaret M. Lamont, Rebecca L. Lewison, Kenneth J. Lohmann, James M. Nance, Jonathan Pitchford, Nathan Freeman Putman, Scott W. Raborn, Jeffrey K. Rester, Jack J. Rudloe, Laura Sarti Martinez, Mark Schexnayder, Jeffrey R. Schmid, Donna J. Shaver, Christopher Slay, Anton D. Tucker, Mandy Tumlin, Thane Wibbels, Blanca M. Zapata Najera
2016, Gulf of Mexico Science (33) 138-157
We developed a Kemp’s ridley (Lepidochelys kempii) stock assessment model to evaluate the relative contributions of conservation efforts and other factors toward this critically endangered species’ recovery. The Kemp’s ridley demographic model developed by the Turtle Expert Working Group (TEWG) in 1998 and 2000 and updated for the binational recovery...
Cryovolcanism on Ceres
O. Ruesch, T. Platz, P. Schenk, L.A. McFadden, J. C. Castillo-Rogez, L. C. Quick, S. Byrne, F. Preusker, D.P. O'Brien, N. Schmedemann, D.A. Williams, Jian-Yang Li, M. T. Bland, H. Hiesinger, T. Kneissl, A. Neesemann, M. Schaefer, J. H. Pasckert, B.E. Schmidt, D.L. Buczkowski, M. V. Sykes, A. Nathues, T. Roatsch, M. Hoffman, C.A. Raymond, C.T. Russell
2016, Science (353)
Volcanic edifices are abundant on rocky bodies of the inner solar system. In the cold outer solar system, volcanism can occur on solid bodies with a water-ice shell, but derived cryovolcanic constructs have proved elusive. We report the discovery using Dawn Framing Camera images of a landform on dwarf planet...
Nitrapyrin in streams: The first study documenting off-field transport of a nitrogen stabilizer compound
Emily E. Woodward, Michelle Hladik, Dana W. Kolpin
2016, Environmental Science & Technology Letters (3) 387-392
Nitrapyrin is a bactericide that is co-applied with fertilizer to prevent nitrification and enhance corn yields. While there have been studies of the environmental fate of nitrapyrin, there is no documentation of its off-field transport to streams. In 2016, 59 water samples from 11 streams across Iowa were analyzed for...
Generating community-built tools for data sharing and analysis in environmental networks
Jordan S. Read, Corinna Gries, Emily K. Read, Jennifer Klug, Paul C. Hanson, Matthew R. Hipsey, Eleanor Jennings, Catherine O’Reilley, Luke A. Winslow, Don Pierson, Christopher G. McBride, David Hamilton
2016, Inland Waters (6) 637-644
Rapid data growth in many environmental sectors has necessitated tools to manage and analyze these data. The development of tools often lags behind the proliferation of data, however, which may slow exploratory opportunities and scientific progress. The Global Lake Ecological Observatory Network (GLEON) collaborative model supports an efficient and comprehensive...
Assessing Brook Trout populations in headwater streams of the Adirondack Mountains using environmental DNA -- Summary report
Barry P. Baldigo, Scott D. George, Lee Ann Sporn, Jacob Ball
2016, NYSERDA Report 17-02
This project evaluated standard fish-survey and environmental DNA (eDNA) sampling methods to determine the ability of eDNA to accurately predict the presence and abundance of resident Brook Trout populations in 40 headwater streams mainly in the western Adirondack Mountains during 2014–2015 (Figure 2). Standard 3-pass electrofishing surveys found that Brook...
Consequences of gas flux model choice on the interpretation of metabolic balance across 15 lakes
Hilary A. Dugan, R. Iestyn Woolway, Arianto Santoso, Jessica Corman, Aline Jaimes, Emily Nodine, Vijay P. Patil, Jacob A. Zwart, Jennifer A. Brentrup, Amy Hetherington, Samantha K. Oliver, Jordan S. Read, Kirsten Winter, Paul Hanson, Emily Read, Luke Winslow, Kathleen Weathers
2016, Inland Waters (6) 581-592
Ecosystem metabolism and the contribution of carbon dioxide from lakes to the atmosphere can be estimated from free-water gas measurements through the use of mass balance models, which rely on a gas transfer coefficient (k) to model gas exchange with the atmosphere. Theoretical and empirically based models of krange in complexity...
Modeling the effects of tile drain placement on the hydrologic function of farmed prairie wetlands
Brett Werner, John Tracy, W. Carter Johnson, Richard A. Voldseth, Glenn R. Guntenspergen, Bruce Millett
2016, Journal of the American Water Resources Association (52) 1482-1492
The early 2000s saw large increases in agricultural tile drainage in the eastern Dakotas of North America. Agricultural practices that drain wetlands directly are sometimes limited by wetland protection programs. Little is known about the impacts of tile drainage beyond the delineated boundaries of wetlands in upland catchments that may...
An experimental study of the role of subsurface plumbing on geothermal discharge
Atsuko Namiki, Yoshinori Ueno, Shaul Hurwitz, Michael Manga, Carolina Munoz-Saez, Fred Murphy
2016, Geochemistry, Geophysics, Geosystems (17) 3691-3716
In order to better understand the diverse discharge styles and eruption intervals observed at geothermal features, we performed three series of laboratory experiments with differing plumbing geometries. A single, straight conduit that connects a hot water bath (flask) to a vent (funnel) can originate geyser-like periodic eruptions, continuous discharge like...
The potential of high-frequency profiling to assess vertical and seasonal patterns of phytoplankton dynamics in lakes: An extension of the Plankton Ecology Group (PEG) model
Jennifer A. Brentrup, Craig E. Williamson, William Colom-Montero, Werner Eckert, Elvira de Eyto, Hans-Peter Grossart, Yannick Huot, Peter D. F. Isles, Lesley B. Knoll, Taylor H. Leach, Christopher G. McBride, Don Pierson, Francesco Pomati, Jordan S. Read, Kevin C. Rose, Nihar R. Samal, Peter A. Staehr, Luke A. Winslow
2016, Inland Waters (6) 565-580
The use of high-frequency sensors on profiling buoys to investigate physical, chemical, and biological processes in lakes is increasing rapidly. Profiling buoys with automated winches and sensors that collect high-frequency chlorophyll fluorescence (ChlF) profiles in 11 lakes in the Global Lake Ecological Observatory Network (GLEON) allowed the study of the...
Comment on “Reconciliation of the Devils Hole climate record with orbital forcing”
Isaac J. Winograd
2016, Science (354) 296-296
Moseley et al. (Reports, 8 January 2016, p. 165) postulate an increase in dissolved thorium isotope 230Th with depth below the water table as the explanation for the differing ages of Termination II. Flow of geothermal water through the Devils Hole caverns precludes this explanation. Deposition of younger secondary calcite...
The geomorphology of Ceres
D.L. Buczkowski, B.E. Schmidt, D.A. Williams, S.C. Mest, J.E.C. Scully, A. Ermakov, F. Preusker, P. Schenk, K. A. Otto, H. Hiesinger, D. O'Brien, S. Marchi, H.G. Sizemore, K. Hughson, H. Chilton, M. Bland, S. Byrne, N. Schorghofer, T. Platz, R. Jaumann, T. Roatsch, M. V. Sykes, A. Nathues, De Sanctis, C.A. Raymond, C.T. Russell
2016, Science (353)
Analysis of Dawn spacecraft Framing Camera image data allows evaluation of the topography and geomorphology of features on the surface of Ceres. The dwarf planet is dominated by numerous craters, but other features are also common. Linear structures include both those associated with impact craters and those that do not...
Dog days of summer: Influences on decision of wolves to move pups
David E. Ausband, Michael S. Mitchell, Sarah B. Bassing, Matthew Nordhagen, Douglas W. Smith, Daniel R. Stahler
2016, Journal of Mammalogy (97) 1282-1287
For animals that forage widely, protecting young from predation can span relatively long time periods due to the inability of young to travel with and be protected by their parents. Moving relatively immobile young to improve access to important resources, limit detection of concentrated scent by predators, and decrease infestations...
Detection of water and/or hydroxyl on asteroid (16) Psyche
Driss Takir, Vishnu Reddy, Juan A. Sanchez, Michael K. Shepard, Joshua P. Emery
2016, Astronomical Journal (153)
In order to search for evidence of hydration on M-type asteroid (16) Psyche, we observed this object in the 3 μm spectral region using the long-wavelength cross-dispersed (LXD: 1.9–4.2 μm) mode of the SpeX spectrograph/imager at the NASA Infrared Telescope Facility. Our observations show that Psyche exhibits a 3 μm absorption feature, attributed...
Multi-decadal increases in dissolved organic carbon and alkalinity flux from the Mackenzie drainage basin to the Arctic Ocean
Suzanne E. Tank, Robert G. Striegl, James W. McClelland, Steven V. Kokelj
2016, Environmental Research Letters (11) 1-10
Riverine exports of organic and inorganic carbon (OC, IC) to oceans are intricately linked to processes occurring on land. Across high latitudes, thawing permafrost, alteration of hydrologic flow paths, and changes in vegetation may all affect this flux, with subsequent implications for regional and global carbon (C) budgets. Using a...
Identifying alternate pathways for climate change to impact inland recreational fishers
Len M. Hunt, Eli P. Fenichel, David C. Fulton, Robert Mendelsohn, Jordan W. Smith, Tyler D. Tunney, Abigail J. Lynch, Craig P. Paukert, James E. Whitney
2016, Fisheries (41) 362-372
Fisheries and human dimensions literature suggests that climate change influences inland recreational fishers in North America through three major pathways. The most widely recognized pathway suggests that climate change impacts habitat and fish populations (e.g., water temperature impacting fish survival) and cascades to impact fishers. Climate change also impacts recreational...
Adaptive management for soil ecosystem services
Hannah E. Birge, Rebecca A. Bevans, Craig R. Allen, David G. Angeler, Sara G. Baer, Diana H. Wall
2016, Journal of Environmental Management (183) 371-378
Ecosystem services provided by soil include regulation of the atmosphere and climate, primary (including agricultural) production, waste processing, decomposition, nutrient conservation, water purification, erosion control, medical resources, pest control, and disease mitigation. The simultaneous production of these multiple services arises from complex interactions among diverse aboveground and belowground communities across...
Multidecadal increases in the Yukon River Basin of chemical fluxes as indicators of changing flowpaths, groundwater, and permafrost
Ryan C. Toohey, Nicole M. Herman-Mercer, Paul F. Schuster, Edda A. Mutter, Joshua C. Koch
2016, Geophysical Research Letters (43) 12120-12130
The Yukon River Basin, underlain by discontinuous permafrost, has experienced a warming climate over the last century that has altered air temperature, precipitation, and permafrost. We investigated a water chemistry database from 1982 to 2014 for the Yukon River and its major tributary, the Tanana River. Significant increases of Ca,...
Enabling science support for better decision-making when responding to chemical spills
Jennifer L. Weidhass, Andrea M. Dietrich, Nathan J. DeYonker, R. Ryan Dupont, William T. Foreman, Daniel Gallagher, Jennifer E. G. Gallagher, Andrew J. Whelton, William Alexander
2016, Journal of Environmental Quality (45) 1490-1500
Chemical spills and accidents contaminate the environment and disrupt societies and economies around the globe. In the United States there were approximately 172,000 chemical spills that affected US waterbodies from 2004 to 2014. More than 8000 of these spills involved non–petroleum-related chemicals. Traditional emergency responses or incident command structures (ICSs)...
Temporal and spatial trends in nutrient and sediment loading to Lake Tahoe, California-Nevada, USA
Robert Coats, Jack Lewis, Nancy L. Alvarez, Patricia Arneson
2016, Journal of the American Water Resources Association (52) 1347-1365
Since 1980, the Lake Tahoe Interagency Monitoring Program (LTIMP) has provided stream-discharge and water quality data—nitrogen (N), phosphorus (P), and suspended sediment—at more than 20 stations in Lake Tahoe Basin streams. To characterize the temporal and spatial patterns in nutrient and sediment loading to the lake, and improve the usefulness...
Observed and simulated hydrologic response for a first-order catchment during extreme rainfall 3 years after wildfire disturbance
Brian A. Ebel, Francis K. Rengers, Gregory E. Tucker
2016, Water Resources Research (52) 9367-9389
Hydrologic response to extreme rainfall in disturbed landscapes is poorly understood because of the paucity of measurements. A unique opportunity presented itself when extreme rainfall in September 2013 fell on a headwater catchment (i.e., <1 ha) in Colorado, USA that had previously been burned by a wildfire in 2010. We...
Climate change and the Delta
Michael D. Dettinger, Jamie Anderson, Michael L. Anderson, Larry R. Brown, Daniel Cayan, Edwin P. Maurer
2016, San Francisco Estuary and Watershed Science (14) 1-26
Anthropogenic climate change amounts to a rapidly approaching, “new” stressor in the Sacramento–San Joaquin Delta system. In response to California’s extreme natural hydroclimatic variability, complex water-management systems have been developed, even as the Delta’s natural ecosystems have been largely devastated. Climate change is projected to challenge these management and ecological...
High nitrate concentrations in some Midwest United States streams in 2013 after the 2012 drought
Peter C. Van Metre, Jeffrey W. Frey, MaryLynn Musgrove, Naomi Nakagaki, Sharon L. Qi, Barbara Mahler, Michael E. Wieczorek, Daniel T. Button
2016, Journal of Environmental Quality (45) 1696-1704
Nitrogen sources in the Mississippi River basin have been linked to degradation of stream ecology and to Gulf of Mexico hypoxia. In 2013, the USGS and the USEPA characterized water quality stressors and ecological conditions in 100 wadeable streams across the midwestern United States. Wet conditions in 2013 followed a...
Environmental extremes and biotic interactions facilitate depredation of endangered California Ridgway’s rail in a San Francisco Bay tidal marsh
Cory T. Overton, Steven Bobzien, Marcia Grefsrud
2016, California Fish and Game (102) 157-161
On 23 December 2015 while performing a high tide population survey for endangered Ridgway’s rails (Rallus obsoletus obsoletus; formerly known as the California clapper rail) and other rail species at Arrowhead Marsh, Martin Luther King Jr. Regional Shoreline, Oakland, California, the authors observed a series of species interactions resulting in...
Deciduous trees are a large and overlooked sink for snowmelt water in the boreal forest
Jessica Young, W. Robert Bolton, Uma Bhatt, Jordi Cristobal, Richard Thoman
2016, Scientific Reports (6) 1-10
The terrestrial water cycle contains large uncertainties that impact our understanding of water budgets and climate dynamics. Water storage is a key uncertainty in the boreal water budget, with tree water storage often ignored. The goal of this study is to quantify tree water content during the snowmelt and growing...
