A coupled metabolic-hydraulic model and calibration scheme for estimating of whole-river metabolism during dynamic flow conditions
Robert A. Payn, Robert O Hall, Theodore A. Kennedy, Geoff C Poole, Lucy A. Marshall
2017, Limnology and Oceanography: Methods (15) 847-866
Conventional methods for estimating whole-stream metabolic rates from measured dissolved oxygen dynamics do not account for the variation in solute transport times created by dynamic flow conditions. Changes in flow at hourly time scales are common downstream of hydroelectric dams (i.e. hydropeaking), and hydrologic limitations of conventional metabolic models...
Reconstructing the evolution of the submarine Monterey Canyon System from Os, Nd, and Pb isotopes in hydrogenetic Fe-Mn crusts
T.A. Conrad, S.G. Nielsen, Bernhard Peucker-Ehrenbrink, J. Blusztajn, D. Winslow, James R. Hein, A. Paytan
2017, Geochemistry, Geophysics, Geosystems (18) 3946-3963
The sources of terrestrial material delivered to the California margin over the past 7 Myr were assessed using 187Os/188Os, Nd, and Pb isotopes in hydrogenetic ferromanganese crusts from three seamounts along the central and southern California margin. From 6.8 to 4.5 (± 0.5) Ma, all three isotope systems show more radiogenic...
HERA: A dynamic web application for visualizing community exposure to flood hazards based on storm and sea level rise scenarios
Jeanne M. Jones, Kevin Henry, Nathan J. Wood, Peter Ng, Matthew Jamieson
2017, Computers & Geosciences (109) 124-133
The Hazard Exposure Reporting and Analytics (HERA) dynamic web application was created to provide a platform that makes research on community exposure to coastal-flooding hazards influenced by sea level rise accessible to planners, decision makers, and the public in a manner that is both easy to use and easily accessible....
Micronuclei and other erythrocyte nuclear abnormalities in fishes from the Great Lakes Basin, USA
Ryan P. Braham, Vicki S. Blazer, Cassidy H. Shaw, Patricia M. Mazik
2017, Environmental and Molecular Mutagenesis (58) 570-581
Biological markers (biomarkers) sensitive to genotoxic and mutagenic contamination in fishes are widely used to identify exposure effects in aquatic environments. The micronucleus assay was incorporated into a suite of indicators to assess exposure to genotoxic and mutagenic contamination at five Great Lakes Areas of Concern (AOCs), as well as...
Seasonality of stable isotope composition of atmospheric water input at the southern slopes of Mt. Kilimanjaro, Tanzania
Insa Otte, Florian Detsch, Adrian Gutlein, Martha A. Scholl, Ralf Kiese, Tim Appelhans, Thomas Nauss
2017, Hydrological Processes (31) 3932-3947
To understand the moisture regime at the southern slopes of Mt. Kilimanjaro, we analysed the isotopic variability of oxygen (δ18O) and hydrogen (δD) of rainfall, throughfall, and fog from a total of 2,140 samples collected weekly over 2 years at 9 study sites along an elevation transect ranging from 950 to...
Simulation of groundwater and surface-water flow in the upper Deschutes Basin, Oregon
Marshall W. Gannett, Kenneth E. Lite Jr., John C. Risley, Esther M. Pischel, Jonathan L. La Marche
2017, Scientific Investigations Report 2017-5097
This report describes a hydrologic model for the upper Deschutes Basin in central Oregon developed using the U.S. Geological Survey (USGS) integrated Groundwater and Surface-Water Flow model (GSFLOW). The upper Deschutes Basin, which drains much of the eastern side of the Cascade Range in Oregon, is underlain by large...
Southern Great Plains Rapid Ecoregional assessment—Volume I. Ecological communities
Gordon C. Reese, Lucy Burris, Natasha B. Carr, Ian I.F. Leinwand, Cynthia P. Melcher
2017, Open-File Report 2017-1100
The Southern Great Plains Rapid Ecoregional Assessment was conducted in partnership with the Bureau of Land Management (BLM) and the Great Plains Landscape Conservation Cooperative. The overall goal of the Rapid Ecoregional Assessments (REAs) is to compile and synthesize regional datasets to facilitate evaluation of the cumulative effects of change agents...
A comparison of four porewater sampling methods for metal mixtures and dissolved organic carbon and the implications for sediment toxicity evaluations
Danielle M. Cleveland, William G. Brumbaugh, Donald D. MacDonald
2017, Environmental Toxicology and Chemistry (36) 2906-2915
Evaluations of sediment quality conditions are commonly conducted using whole-sediment chemistry analyses but can be enhanced by evaluating multiple lines of evidence, including measures of the bioavailable forms of contaminants. In particular, porewater chemistry data provide information that is directly relevant for interpreting sediment toxicity data. Various methods for sampling...
Quantifying long-term population growth rates of threatened bull trout: challenges, lessons learned, and opportunities
Phaedra E. Budy, Tracy Bowerman, Robert K. Al-Chokhachy, Mary Conner, Howard Schaller
2017, Canadian Journal of Fisheries and Aquatic Sciences (74) 2131-2143
Temporal symmetry models (TSM) represent advances in the analytical application of mark–recapture data to population status assessments. For a population of char, we employed 10 years of active and passive mark–recapture data to quantify population growth rates using different data sources and analytical approaches. Estimates of adult population growth rate...
Design and methods of the Midwest Stream Quality Assessment (MSQA), 2013
Jessica D. Garrett, Jeffrey W. Frey, Peter C. Van Metre, Celeste A. Journey, Naomi Nakagaki, Daniel T. Button, Lisa H. Nowell
2017, Open-File Report 2017-1073
During 2013, the U.S. Geological Survey (USGS) National Water-Quality Assessment Project (NAWQA), in collaboration with the USGS Columbia Environmental Research Center, the U.S. Environmental Protection Agency (EPA) National Rivers and Streams Assessment (NRSA), and the EPA Office of Pesticide Programs assessed stream quality across the Midwestern United States. This Midwest...
HIF evaluation of In-Situ Aqua TROLL 400
Evan F. Tillman
2017, Open-File Report 2017-1086
The In-Situ Aqua TROLL 400 (Aqua TROLL 400) was tested at the U.S. Geological Survey (USGS) Hydrologic Instrumentation Facility (HIF) against known standards over the Aqua TROLL 400’s operating temperature to verify the manufacturer’s stated accuracy specifications and the USGS recommendations for pH, dissolved oxygen (DO), and specific conductance (SC)....
Oxygen stable isotopic disparities among sympatric small land snail species from northwest Minnesota, USA
Yurena Yanes, Jeffrey C. Nekola, Jason A. Rech, Jeffery S. Pigati
2017, Palaeogeography, Palaeoclimatology, Palaeoecology (485) 715-722
The oxygen isotopic composition (δ18O) of land snail shells can be a valuable paleoenvironmental archive if the climatic parameters that influence the isotopic system are fully understood. Previous calibration studies have examined a limited number of species or individuals, and most have focused on larger (> 10 mm) taxa, which do not...
Multistressor predictive models of invertebrate condition in the Corn Belt, USA
Ian R. Waite, Peter C. Van Metre
2017, Freshwater Science (36) 901-914
Understanding the complex relations between multiple environmental stressors and ecological conditions in streams can help guide resource-management decisions. During 14 weeks in spring/summer 2013, personnel from the US Geological Survey and the US Environmental Protection Agency sampled 98 wadeable streams across the Midwest Corn Belt region of the USA for...
U.S. Geological Survey experience with the residual absolutes method
E. William Worthington, Jurgen Matzka
2017, Geoscientific Instrumentation, Methods and Data Systems (6) 419-427
The U.S. Geological Survey (USGS) Geomagnetism Program has developed and tested the residual method of absolutes, with the assistance of the Danish Technical University's (DTU) Geomagnetism Program. Three years of testing were performed at College Magnetic Observatory (CMO), Fairbanks, Alaska, to compare the residual method with the null method. Results show that the two...
Ephemeral seafloor sedimentation during dam removal: Elwha River, Washington
Melissa M. Foley, Jonathan A. Warrick
2017, Continental Shelf Research (150) 36-47
The removal of the Elwha and Glines Canyon dams from the Elwha River in Washington, USA, resulted in the erosion and transport of over 10 million m3 of sediment from the former reservoirs and into the river during the first two years of the dam removal process. Approximately 90% of this...
Urban landscapes can change virus gene flow and evolution in a fragmentation-sensitive carnivore
Nicholas M. Fountain-Jones, Meggan E. Craft, W. Chris Funk, Chris Kozakiewicz, Daryl Trumbo, Erin E. Boydston, Lisa M. Lyren, Kevin R. Crooks, Justin S. Lee, Sue VandeWoude, Scott Carver
2017, Molecular Ecology (26) 6487-6498
Urban expansion has widespread impacts on wildlife species globally, including the transmission and emergence of infectious diseases. However, there is almost no information about how urban landscapes shape transmission dynamics in wildlife. Using an innovative phylodynamic approach combining host and pathogen molecular data with landscape characteristics and host traits, we...
Influence of pore pressure change on coseismic volumetric strain
Chi-Yuen Wang, Andrew J. Barbour
2017, Earth and Planetary Science Letters (475) 152-159
Coseismic strain is fundamentally important for understanding crustal response to changes of stress after earthquakes. The elastic dislocation model has been widely applied to interpreting observed shear deformation caused by earthquakes. The application of the same theory to interpreting volumetric strain, however, has met with difficulty, especially in the far...
Forecast first: An argument for groundwater modeling in reverse
Jeremy T. White
2017, Groundwater (55) 660-664
Numerical groundwater models are important compo-nents of groundwater analyses that are used for makingcritical decisions related to the management of ground-water resources. In this support role, models are oftenconstructed to serve a specific purpose that is to provideinsights, through simulation, related to a specific func-tion of a complex aquifer system...
The importance of parameterization when simulating the hydrologic response of vegetative land-cover change
Jeremy T. White, Victoria G. Stengel, Samuel H. Rendon, John Banta
2017, Hydrology and Earth System Sciences (21) 3975-3989
Computer models of hydrologic systems are frequently used to investigate the hydrologic response of land-cover change. If the modeling results are used to inform resource-management decisions, then providing robust estimates of uncertainty in the simulated response is an important consideration. Here we examine the importance of parameterization, a necessarily subjective...
Forest harvest patterns on private lands in the Cascade Mountains, Washington, USA
Christopher E. Soulard, Jessica J. Walker, Glenn E. Griffith
2017, Forests (8) 1-18
Forests in Washington State generate substantial economic revenue from commercial timber harvesting on private lands. To investigate the rates, causes, and spatial and temporal patterns of forest harvest on private tracts throughout the Cascade Mountains, we relied on a new generation of annual land-use/land-cover (LULC) products created from the application...
The NorWeST summer stream temperature model and scenarios for the western U.S.: A crowd-sourced database and new geospatial tools foster a user-community and predict broad climate warming of rivers and streams
Daniel J. Isaak, Seth J. Wenger, Erin E. Peterson, Jay M Ver Hoef, David E Nagel, Charlie H. Luce, Steven W. Hostetler, Jason B. Dunham, Brett B. Roper, Sherry P Wollrab, Gwynne L Chandler, Dona L Horan, Sharon Parkes-Payne
2017, Water Resources Research (53) 9181-9205
Thermal regimes are fundamental determinants of aquatic ecosystems, which makes description and prediction of temperatures critical during a period of rapid global change. The advent of inexpensive temperature sensors dramatically increased monitoring in recent decades, and although most monitoring is done by individuals for agency‐specific purposes, collectively these efforts constitute...
Viability analysis for multiple populations
Seth J. Wenger, Douglas R. Leasure, Daniel C. Dauwalter, Mary M. Peacock, Jason B. Dunham, Nathan Chelgren, Helen M. Neville
2017, Biological Conservation (216) 69-77
Many species of conservation interest exist solely or largely in isolated populations. Ideally, prioritization of management actions among such populations would be guided by quantitative estimates of extinction risk, but conventional methods of demographic population viability analysis (PVA) model each population separately and require temporally extensive datasets that are rarely...
Hydraulic and biological analysis of the passability of select fish species at the U.S. Geological Survey streamgaging weir at Blackwells Mills, New Jersey
Alexander J. Haro, Kevin Mulligan, Thomas P. Suro, John Noreika, Amy R. McHugh
2017, Scientific Investigations Report 2017-5103
Recent efforts to advance river connectivity for the Millstone River watershed in New Jersey have led to the evaluation of a low-flow gauging weir that spans the full width of the river. The methods and results of a desktop modelling exercise were used to evaluate the potential ability of three...
Changes in habitat availability for multiple life stages of diamondback terrapins (Malaclemys terrapin) in Chesapeake Bay in response to sea level rise
Ryan J. Woodland, Christopher L. Rowe, Paula F. P. Henry
2017, Estuaries and Coasts (40) 1502-1515
Global sea level rise (SLR) will significantly alter coastal landscapes through inundation and erosion of lowlying areas. Animals that display area fidelity and rely on fringing coastal habitats during multiple life stages, such as diamondback terrapins (Malaclemys terrapin Schoepff 1793), are likely to be particularly vulnerable to SLR-induced changes. We used a combination of empirical nest...
Climatic history of the northeastern United States during the past 3000 years
Jennifer R. Marlon, Neil Pederson, Connor Nolan, Simon Goring, Bryan Shuman, Ann Robertson, Robert K. Booth, Patrick J. Bartlein, Melissa A. Berke, Michael Clifford, Edward Cook, Ann Dieffenbacher-Krall, Michael C. Dietze, Amy Hessl, J. Bradford Hubeny, Stephen T. Jackson, Jeremiah Marsicek, Jason S. McLachlan, Cary J. Mock, David J. P. Moore, Jonathan M. Nichols, Dorothy M. Peteet, Kevin Schaefer, Valerie Trouet, Charles Umbanhowar, John W. Williams, Zicheng Yu
2017, Climate of the Past (13) 1355-1379
Many ecosystem processes that influence Earth system feedbacks, including vegetation growth, water and nutrient cycling, and disturbance regimes, are strongly influenced by multi-decadal to millennial-scale variations in climate that cannot be captured by instrumental climate observations. Paleoclimate information is therefore essential for understanding contemporary ecosystems and their potential trajectories under...
