The effects of management practices on grassland birds—Sedge Wren (Cistothorus stellaris)
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Barry D. Parkin, Travis L. Wooten, Betty R. Euliss
2020, Professional Paper 1842-V
Keys to Sedge Wren (Cistothorus stellaris) management include providing tall, dense grasslands with moderate forb coverage and minimizing disturbances during the breeding season. Sedge Wrens have been reported to use habitats with 30–166 centimeters (cm) average vegetation height, 8–80 cm visual obstruction reading, 15–75 percent grass cover, 3–78 percent forb...
Influenza A viruses remain infectious for more than seven months in northern wetlands of North America
Andrew M. Ramey, Andrew B. Reeves, Judith Z. Drexler, Joshua T. Ackerman, Susan E.W. De La Cruz, Andrew S. Lang, Christina Leyson, Paul T. Link, Diann Prosser, Gregory J. Robertson, Jordan Wight, Sungsu Youk, Erica Spackman, Mary Pantin-Jackwood, Rebecca L. Poulson, David E. Stallknecht
2020, Proceedings of the Royal Society B: Biological Sciences (287)
In this investigation, we used a combination of field- and laboratory-based approaches to assess if influenza A viruses (IAVs) shed by ducks could remain viable for extended periods in surface water within three wetland complexes of North America. In a field experiment, replicate filtered surface water samples...
Pressure coring a Gulf of Mexico deep-water turbidite gas hydrate reservoir: Initial results from The University of Texas–Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition
Peter Flemings, Stephen Phillips, Ray Boswell, Timothy Collett, Ann Cook, Tian Dong, Matthew Frye, David Goldberg, Giles Guerin, Melanie Holland, Junbong Jang, Kevin Meazell, Jamie Morrison, Joshua O’Connell, Ethan Petrou, Tom Pettigrew, Peter Polito, Alexey Portnov, Manasj Santra, Peter Schultheiss, Yongkoo Seol, William Shedd, Evan S. Solomon, Carla Thomas, William F. Waite, Kehua You
2020, AAPG Bulletin (104) 1847-1876
The University of Texas Hydrate Pressure Coring Expedition (UT-GOM2-1) recovered cores at near in situ formation pressures from a gas hydrate reservoir composed of sandy silt and clayey silt beds in Green Canyon Block 955 in the deep-water Gulf of Mexico. The expedition results are synthesized and linked to other...
Littoral sediment from rivers: Patterns, rates and processes of river mouth morphodynamics
Jonathan A. Warrick
2020, Frontiers in Earth Science (8)
Rivers provide important sediment inputs to many littoral cells, thereby replenishing sand and gravel of beaches around the world. However, there is limited information about the patterns and processes of littoral-grade sediment transfer from rivers into coastal systems. Here I address these information gaps by examining topographic and...
Rethinking a groundwater flow system using a multiple-tracer geochemical approach: A case study in Moab-Spanish Valley, Utah
Philip M. Gardner, Nora C. Nelson, Victor M. Heilweil, John E. Solder, Douglas K. Solomon
2020, Journal of Hydrology (590)
The Glen Canyon Group Aquifer (GCGA) is the sole source of public water supply for the city of Moab, Utah, a domestic and international tourist destination. Population and tourism growth are likely to target the GCGA for future water resources, but our analysis indicates...
Assessment of water quality and fecal contamination sources at Hook Pond, East Hampton, New York
Shawn C. Fisher, Brendan A. McCarthy, Christopher M. Kephart, Dale W. Griffin
2020, Scientific Investigations Report 2020-5071
SummaryThe U.S. Geological Survey, in cooperation with the Village of East Hampton, New York, conducted a 1-year study from August 2017 to August 2018 to provide data necessary to improve understanding of the sources of nutrients and pathogens to Hook Pond watershed to allow for possible mitigation or reduction of...
Water Quality of groundwater used for public supply in principal aquifers of the western United States
Celia Z. Rosecrans, MaryLynn Musgrove
2020, Scientific Investigations Report 2020-5078
Groundwater provides nearly half of the Nation’s drinking water. As the Nation’s population grows, the importance of (and need for) high-quality drinking-water supplies increases. As part of a national-scale effort to assess groundwater quality in principal aquifers (PAs) that supply most of the groundwater used for public supply, the...
Climate change Is likely to alter future wolf - moose - forest interactions at Isle Royale National Park, United States
Nathan R. De Jager, Jason J. Rohweder, Matthew J. Duveneck
2020, Frontiers in Ecology and Evolution (8)
We evaluated how climate change and variable rates of moose browsing intensity, as they relate to wolf predation, might affect the forests of Isle Royale National Park, Michigan, United States by conducting a modeling experiment. The experiment consisted of contrasting three different scenarios of wolf management and with a static...
High sensitivity of Bering Sea winter sea ice to winter insolation and carbon dioxide over the last 5,500 years
Miriam C. Jones, Max Berkelhammer, Katherine Keller, Kei Yoshimura, Matthew J. Wooller
2020, Science Advances (6)
Anomalously low winter sea ice extent and early retreat in CE 2018 and 2019 challenge previous notions that winter sea ice in the Bering Sea has been stable over the instrumental record, although long-term records remain limited. Here, we use a record of peat cellulose oxygen...
Food matrix reference materials for hydrogen, carbon, nitrogen, oxygen, and sulfur stable isotope-ratio measurements: Collagens, flours, honeys, and vegetable oils
Arndt Schimmelmann, Haiping Qi, Philip J.H. Dunn, Federica Camin, Luana Bontempo, Doris Potocnik, Nives Ogrinc, Simon Kelly, James Carter, Aiman Abrahim, Lauren T Reid, Tyler B. Coplen
2020, Journal of Agricultural and Food Chemistry (68) 10852-10864
An international project developed, quality-tested, and measured isotope–delta values of 10 new food matrix reference materials (RMs) for hydrogen, carbon, nitrogen, oxygen, and sulfur stable isotope-ratio measurements to support food authenticity testing and food provenance verification. These new RMs, USGS82 to USGS91,...
Sediment export and impacts associated with river delta channelization compound estuary vulnerability to sea-level rise, Skagit River Delta, Washington, USA
Eric E. Grossman, Andrew W. Stevens, Peter Dartnell, Doug A George, David Finlayson
2020, Marine Geology (430)
Improved understanding of the budget and retention of sediment in river deltas is becoming increasingly important to mitigate and plan for impacts expected with sea level rise. In this study, analyses of historical bathymetric change, sediment core stratigraphy, and modeling are...
elfgen: A new instream flow framework for rapid generation and optimization of flow-ecology relations
Joseph D Kleiner, Elaina M Passero, Robert W. Burgholzer, Jennifer L. Krstolic, Durelle R Scott
2020, Journal of the American Water Resources Association (6) 949-966
Effective water resource management requires practical, data‐driven determination of instream flow needs. Newly developed, high‐resolution flow models and aquatic species databases provide enormous opportunity, but the volume of data can prove challenging to manage without automated tools. The objective of this study was to develop a...
Effect of fluvial discharges and remote non-tidal residuals on compound flood forecasting in San Francisco Bay
Babak Tehranirad, Liv M. Herdman, Kees Nederhoff, Li H. Erikson, Rob Cifelli, Greg Pratt, Michael Leon, Patrick L. Barnard
2020, Water (12)
Accurate and timely flood forecasts are critical for making emergency-response decisions regarding public safety, infrastructure operations, and resource allocation. One of the main challenges for coastal flood forecasting systems is a lack of reliable forecast data of large-scale oceanic and watershed processes and the combined effects of multiple hazards, such...
Effects of a temperature rise on melatonin and thyroid hormones during smoltification of Atlantic salmon, Salmo salar
Laura G Nisembaum, Patrick Martin, Michael Fuentes, Laurence Besseau, Eloise Magnanou, Stephen D. McCormick, Jack Falcon
2020, Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology (190) 731-748
Smoltification prepares juvenile Atlantic salmon (Salmo salar) for downstream migration. Dramatic changes characterize this crucial event in the salmon’s life cycle, including increased gill Na+/K+-ATPase activity (NKA) and plasma hormone levels. The triggering of smoltification relies on photoperiod and is modulated by temperature. Both provide reliable...
Opportunities and challenges for restoration of the Merced River through Yosemite Valley, Yosemite National Park, USA
Derek Booth, Katie Ross-Smith, Elizabeth Haddon, Thomas Dunne, Eric W. Larsen, James W. Roche, Greg M. Stock, Virginia Mahacek
2020, River Research and Applications (36) 1803-1816
Successful river restoration requires understanding and integration of multiple disciplinary perspectives, including evaluations of past and ongoing watershed processes, local geomorphic response, and impacts unique to human activity. Nowhere is this more apparent than along the Merced River in Yosemite National Park, USA, where both an...
Resource use by American black bear in suburbia: A landholder step selection approach
Farshid S. Ahrestani, Mark A. Ternent, Matthew J. Lovallo, W. David Walter
2020, Human-Wildlife Interactions (14) 216-227
Range expansion of American black bear (Ursus americanus; bear) and residential development has resulted in a growing presence of bear in suburbia. Suburban landscapes exhibiting patchworks of variable-sized parcels and habitats and owned by landowners with diverse values, can create large areas of suitable habitats with limited public access. These...
Social Values for Ecosystem Services, version 4.0 (SolVES 4.0)—Documentation and user manual
Benson C. Sherrouse, Darius J. Semmens
2020, Techniques and Methods 7-C25
The geographic information system tool, Social Values for Ecosystem Services (SolVES), was developed to incorporate quantified and spatially explicit measures of social values into ecosystem service assessments. SolVES 4.0 provides an open-source version of SolVES, which was designed to assess, map, and quantify the social values of ecosystem services. Social...
Wave-resolving Shoreline Boundary Conditions for Wave-Averaged Coastal Models
Francesco Memmola, Alessandro Coluccelli, Aniello Russo, John C. Warner, Maurizio Brocchini
2020, Ocean Modeling (153)
Downscaling broadscale ocean model information to resolve the fine-scale swash-zone dynamics has a number of applications, such as improved resolution of coastal flood hazard drivers, modeling of sediment transport and seabed morphological evolution. A new method is presented, which enables wave-averaged models for the nearshore circulation to include short-wave induced...
Disease in Central Valley salmon: Status and lessons from other systems
Brendan M Lehman, Rachel C. Johnson, Mark Adkison, Oliver T Burgess, Richard E Connon, Nann A. Fangue, Scott J Foott, Sascha L Hallett, Beatriz Martinez-Lopez, Kristina M. Miller, Maureen K. Purcell, Nicholas A. Som, Pablo Valdes-Donoso, Alison L Collins
2020, San Francisco Estuary and Watershed Science (18)
Chinook Salmon (Oncorhynchus tshawytscha) are increasingly vulnerable to anthropogenic activities and climate change, especially at their most southern species range in California’s Central Valley. There is considerable interest in understanding stressors that contribute to population decline and in identifying management actions...
Unifying advective and diffusive descriptions of bedform pumping in the benthic biolayer of streams
Stanley Grant, Ahmed Monofy, Fulvio Boano, Jesus Gomez-Velez, Ian Guymer, Judson Harvey, Marco Ghisalberti
2020, Water Resources Research (56)
Many water quality and ecosystem functions performed by streams occur in the benthic biolayer, the biologically active upper (~5 cm) layer of the streambed. Solute transport through the benthic biolayer is facilitated by bedform pumping, a physical process in which dynamic and static pressure variations over the surface of stationary bedforms...
Integrated hydro-terrestrial modeling: Development of a national capability
David P. Lesmes, Jessica Moerman, Tom Torgeson, Bob Vallario, Timothy D. Scheibe, Efi Foufoula-Georgiou, Harry L. Jenter, Ronald L. Bingner, Laura Condon, Brian Cosgrove, Carlos Del Castillo, Charles W Downer, John Eylander, Michael N. Fienen, Nels Frazier, David Gochis, Dave Goodrich, Judson Harvey, Joseph D. Hughes, David Hyndman, John M. Johnston, Forrest Melton, Glenn E. Moglen, David Moulton, Laura K. Lautz, Rajbir Parmar, Brenda Rashleigh, Patrick Reed, Katherine Skalak, Charuleka Varadharajan, Roland J. Viger, Nathalie Voisin, Mark Wahl
2020, Report
Water is one of our most important natural resources and is essential to our national economy and security. Multiple federal government agencies have mission elements that address national needs related to water. Each water-related agency champions a unique science and/or operational mission focused on advancing a portion of the nation’s...
Flow‐ecology modelling to inform reservoir releases for riparian restoration and management
John T Hickey, Patrick B. Shafroth, Woodrow L Fields
2020, Hydrological Processes (34) 4576-4591
Linked hydrologic, hydraulic, and ecological models can facilitate planning and implementing water releases from reservoirs to achieve ecological objectives along rivers. We applied a flow‐ecology model, the Ecosystem Functions Model (HEC‐EFM), to the Bill Williams River in southwestern USA to estimate areas suitable for recruitment of...
Uranium bioaccumulation dynamics in the mayfly Neocloeon triangulifer and application to site-specific prediction
Brianna L. Henry, Marie Noele Croteau, David Walters, Janet L. Miller, Daniel J. Cain, Christopher C. Fuller
2020, Environmental Science & Technology (54) 11313-11321
Little is known about the underlying mechanisms governing the bioaccumulation of uranium (U) in aquatic insects. We experimentally parameterized conditional rate constants for aqueous U uptake, dietary U uptake, and U elimination for the aquatic baetid mayfly Neocloeon triangulifer. Results showed that...
A one‐dimensional model for turbulent mixing in the benthic biolayer of stream and coastal sediments
Stanley Grant, Jesus Gomez-Velez, Marco Ghisalberti, Ian Guymer, Fulvio Boano, Kevin Roche, Judson Harvey
2020, Water Resources Research (56)
In this paper, we develop and validate a rigorous modeling framework, based on Duhamel's Theorem, for the unsteady one-dimensional vertical transport of a solute across a flat sediment-water interface (SWI) and through the benthic biolayer of a turbulent stream. The modeling framework is novel in capturing the...
Shaping land use change and ecosystem restoration in a water-stressed agricultural landscape to achieve multiple benefits
Benjamin P. Bryant, T. Rodd Kelsey, Adrian L. Vogl, Stacie A. Wolny, Duncan J. MacEwan, Paul Selmants, Tanushree Biswas, H. Scott Butterfield
2020, Frontiers in Sustainable Food Systems (4)
Irrigated agriculture has grown rapidly over the last 50 years, helping food production keep pace with population growth, but also leading to significant habitat and biodiversity loss globally. Now, in some regions, land degradation and overtaxed water resources mean historical production levels may need to be reduced. We demonstrate how...
