The area under the precision‐recall curve as a performance metric for rare binary events
Helen Sofaer, Jennifer A. Hoeting, Catherine S. Jarnevich
2019, Methods in Ecology and Evolution (10) 565-577
Species distribution models are used to study biogeographic patterns and guide decision‐making. The variable quality of these models makes it critical to assess whether a model's outputs are suitable for the intended use, but commonly used evaluation approaches are inappropriate for many ecological contexts. In particular, unrealistically high performance...
Distant neighbors: recent wildfire patterns of the Madrean Sky Islands of southwestern United States and northwestern Mexico
Miguel L. Villarreal, Sandra L. Haire, Jose M. Iniguez, Citlali Cortes Montano, Travis B. Poitras
2019, Fire Ecology (15) 1-20
BackgroundInformation about contemporary fire regimes across the Sky Island mountain ranges of the Madrean Archipelago Ecoregion in the southwestern United States and northern Mexico can provide insight into how historical fire management and land use have influenced fire regimes, and can be used to guide...
Historical background and current developments for mapping burned area from satellite Earth observation
Emilio Chuvieco, Flourent Mouillot, Guido R. van der Werf, Jesus San Miguel, Mihai Tanasse, Nikos Koutsias, Mariano Garcia, Marta Yebra, Marc Padilla, Angelika Heil, Todd Hawbaker, Louis Giglio
2019, Remote Sensing of Environment (225) 45-64
Fire has a diverse range of impacts on Earth's physical and social systems. Accurate and up to date information on areas affected by fire is critical to better understand drivers of fire activity, as well as its relevance for biogeochemical cycles, climate, air quality, and to aid fire management. Mapping burned...
Managing dams for energy and fish tradeoffs: What does a win-win solution take?
Cuihong Song, Andrew O’Malley, Samuel G. Roy, Joseph D. Zydlewski, Betsy L. Barber, Weiwei Mo
2019, Science of the Total Environment (669) 833-843
Management activities to restore endangered fish species, such as dam removals, fishway installations, and periodic turbine shutdowns, usually decrease hydropower generation capacities at dams. Quantitative analysis of the tradeoffs between energy production and fish population recovery related to dam decision-making...
Spatial and temporal variability of harmful algal blooms in Milford Lake, Kansas, May through November 2016
Guy M. Foster, Jennifer L. Graham, Lindsey R. King
2019, Scientific Investigations Report 2018-5166
The U.S. Geological Survey, in cooperation with the Kansas Department of Health and Environment (KDHE), completed a study to quantify the spatial and temporal variability of cyanobacterial blooms in Milford Lake, Kansas, over a range of environmental conditions at various time scales (hours to months). A better understanding of the...
Characterizing the influence of fire on hydrology in southern California
Lorraine E. Flint, Emma C Underwood, Alan L. Flint, Allan Hollander
2019, Natural Areas Journal (39) 108-121
The chaparral-dominated national forests of southern California were in part established to provide water provision services to the surrounding urban populations and irrigation for agriculture. However, water provision in the form of groundwater recharge and surface runoff depends on the climatological conditions of any given...
Fungicides: An overlooked pesticide class?
Jochen Zubrod, Micro Bundschuh, Gertie Arts, Carsten Bruhl, Gwenael Imfeld, Anja Knabel, Sylvain Payraudeau, Jes J Rasmussen, Jason Rohr, Andreas Scharmuller, Kelly L. Smalling, Sebastian Stehle, Ralf B. Schäfer, Ralf Schulz
2019, Environmental Science & Technology (53) 3347-3365
Fungicides are indispensable to global food security and their use is forecasted to intensify. Fungicides can reach aquatic ecosystems and occur in surface water bodies in agricultural catchments throughout the whole growing season due to their frequent, prophylactic application. However, in comparison to herbicides and insecticides, the exposure to and...
Assessing the lead solubility potential of untreated groundwater of the United States
Bryant Jurgens, David L. Parkhurst, Kenneth Belitz
2019, Environmental Science & Technology (53) 3095-3103
In the U.S., about 44 million people rely on self-supplied groundwater for drinking water. Because most self-supplied homeowners do not treat their water to control corrosion, drinking water can be susceptible to lead (Pb) contamination from metal plumbing. To assess the types and locations of susceptible groundwater, a geochemical reaction...
An assessment of plant species differences on cellulose oxygen isotopes from two Kenai Peninsula, Alaska peatlands: Implications for hydroclimatic reconstructions
Miriam Jones, Lesleigh Anderson, Katherine Keller, Bailey Nash, Virginia Littell, Matthew J. Wooller, Chelsea Jolley
2019, Frontiers in Earth Science (7)
Peat cores are valuable archives of past environmental change because they accumulate plant organic matter over millennia. While studies have primarily focused on physical, ecological, and some biogeochemical proxies, cores from peatlands have increasingly been used to interpret hydroclimatic change using stable isotope analyses of cellulose preserved in plant remains....
Hormones and pharmaceuticals in groundwater used as a source of drinking water across the United States
Laura M. Bexfield, Patricia Toccalino, Kenneth Belitz, William T. Foreman, Edward Furlong
2019, Environmental Science & Technology (53) 2950-2960
This is the first large-scale, systematic assessment of hormone and pharmaceutical occurrence in groundwater used for drinking across the United States. Samples from 1091 sites in Principal Aquifers representing 60% of the volume pumped for drinking-water supply had final data for 21 hormones and 103 pharmaceuticals. At least one compound...
Modeling connectivity of non‐floodplain wetlands: Insights, approaches, and recommendations
C. Nathan Jones, Ali A. Ameli, Brian Neff, Grey R. Evenson, Daniel L. McLaughlin, Heather E. Golden, Charles R. Lane
2019, Journal of the American Water Resources Association (JAWRA) (55) 559-577
Representing hydrologic connectivity of non‐floodplain wetlands (NFWs) to downstream waters in process‐based models is an emerging challenge relevant to many research, regulatory, and management activities. We review four case studies that utilize process‐based models developed to simulate NFW hydrology. Models range from a simple, lumped parameter...
GPS tracking data reveals daily spatio-temporal movement patterns of waterfowl
Fiona McDuie, Michael L. Casazza, Cory T. Overton, Mark P. Herzog, C. Alex Hartman, Sarah H. Peterson, Cliff L. Feldheim, Joshua T. Ackerman
2019, Movement Ecology (7) 1-17
BackgroundSpatio-temporal patterns of movement can characterize relationships between organisms and their surroundings, and address gaps in our understanding of species ecology, activity budgets, bioenergetics, and habitat resource management. Highly mobile waterfowl, which can exploit resources over large spatial extents, are excellent models to understand relationships...
Geology and assessment of undiscovered oil and gas resources of the Vilkitskii Basin Province, 2008
Kenneth J. Bird, David W. Houseknecht, Janet K. Pitman
Thomas E. Moore, Donald L. Gautier, editor(s)
2019, Professional Paper 1824-Z
The Vilkitskii Basin is a separate petroleum province that lies beneath the continental shelf of the East Siberian Sea east of the New Siberian Islands and northwest of Wrangel Island. It is a basin known only on the basis of gravity data and three seismic profiles. A small, southern part...
Two-dimensional seismic velocities and structural variations at three British Columbia Hydro and Power Authority (BC Hydro) dam sites, Vancouver Island, British Columbia, Canada
Rufus D. Catchings, Kofi O. Addo, Mark R. Goldman, Joanne H. Chan, Robert R. Sickler, Coyn J. Criley
2019, Open-File Report 2019-1015
SummaryIn June, 2017, we acquired seismic data along five linear profiles at three British Columbia Hydro and Power Authority (BC Hydro, a Canadian provincial Crown Corporation) dam sites (John Hart, Ladore, and Strathcona Dams) on Vancouver Island, British Columbia, Canada. We also attempted to acquire linear seismic profiles at two...
Hydromechanical earthquake nucleation model forecasts onset, peak, and falling rates of induced seismicity in Oklahoma and Kansas
Jack Norbeck, Justin L. Rubinstein
2019, Geophysical Research Letters (45) 2963-2975
The earthquake activity in Oklahoma and Kansas that began in 2008 reflects the most widespread instance of induced seismicity observed to date. We develop a reservoir model to calculate the hydrologic conditions associated with the activity of 902 saltwater disposal wells injecting into the Arbuckle aquifer. Estimates...
Modelling for catchment management
Aroon Parshotam, Dale M. Robertson
David P. Hamilton, Kevin J. Collier, John M. Quinn, Clive Howard-Williams, editor(s)
2019, Book chapter, Lake restoration handbook
Catchment models are useful tools to help describe and quantify the sources, transport, and fate of sediment, nutrients, and other constituents in a landscape. Results from catchment models are used to quantify and understand existing conditions and used in restoration efforts by defining areas with highest contributions (hotspots, where actions...
Patterns of big sagebrush plant community composition and stand structure in the western United States
Victoria E. Pennington, John B. Bradford, Kyle A. Palmquist, Rachel R. Renne, William K. Lauenroth
2019, Rangeland Ecology and Management (72) 505-514
Big sagebrush (Artemisia tridentata Nutt.) plant communities are found in western North America and comprise a mix of shrubs, forbs, and grasses. Climate, topography, and soil water availability are important factors that shape big sagebrush stand structure and plant community composition; however, most studies have focused on understanding these relationships at sites in a small portion of...
Trends in landbird density at two national parks in fragmented, mixed-use landscapes of the Pacific Northwest
Chris Ray, Mandy Holmgren, Robert L. Wilkerson, Rodney B. Siegel, John R. Boetsch, Kurt J. Jenkins, Jason I. Ransom
M. Holmgren, R. Wilkerson, R. Siegel, J. Ransom, Kurt J. Jenkins, J. Boetsch, editor(s)
2019, Northwestern Naturalist (100) 1-25
National parks play a key role in conserving species by providing landscapes where threats from anthropogenic disturbance are reduced. In a recent study of 3 large wilderness parks in the Pacific Northwest, nearly all landbird species were found to be stable or increasing. Nonetheless, contemporary results from the Breeding Bird...
Physical, biogeochemical, and meteorological factors responsible for interannual changes in cyanobacterial community composition and biovolume over two decades in a eutrophic lake
Chelsea A. Weirich, Dale M. Robertson, Todd R. Miller
2019, Hydrobiologia (828) 165-182
This study used a 20-year dataset (1995–2014) to identify factors affecting cyanobacterial community composition (CCC) and abundance in a eutrophic lake. We hypothesized that differences in thermal structure, nutrients, and meteorology drive interannual variability in CCC and abundance. Cluster analysis differentiated dominant cyanobacteria into rare, low abundance, or sporadically occurring...
Isotopic and petrologic investigation, and a thermomechanical model of genesis of large-volume rhyolites in arc environments: Karymshina Volcanic Complex, Kamchatka, Russia
Ilya N. Bindeman, Vladimir L. Leonov, Dylan P. Colon, Aleksey N. Rogozin, Niccole Shipley, Brian Jicha, Matthew W. Loewen, Taras V. Gerya
2019, Frontiers in Earth Science (6)
The Kamchatka Peninsula of eastern Russia is currently one of the most volcanically active areas on Earth where a combination of >8 cm/yr subduction convergence rate and thick continental crust generates large silicic magma chambers, reflected by abundant large calderas and caldera complexes. This study examines the largest center of...
Influenza A prevalence and subtype diversity in migrating teal sampled along the United States Gulf Coast
Deborah Carter, Paul T. Link, Patrick Walther, Andrew M. Ramey, David E. Stallknecht, Rebecca L. Poulson
2019, Avian Diseases (63) 165-171
Wild birds in the order Anseriformes are important reservoirs for influenza A viruses (IAV); however, IAV prevalence and subtype diversity may vary by season, even at the same location. To better understand the ecology of IAV during waterfowl migration through the Gulf Coast of the United States (Louisiana and Texas),...
Carbon accumulation and vertical accretion in a restored vs. historic salt marsh in southern Puget Sound, Washington, United States
Judith Z. Drexler, Isa Woo, Christopher C. Fuller, Glynnis Nakai
2019, Restoration Ecology (27) 1117-1127
Few comparisons exist between vertical accretion (VA) and carbon accumulation rates (CARs), in restored vs. historic (i.e., reference) marshes. Here we compare these processes in a formerly diked, sparsely vegetated, restored salt marsh (Six Gill Slough, SG), whose surface is subsided relative to the tidal frame, to an adjacent,...
Unprocessed atmospheric nitrate in waters of the Northern Forest Region in the USA and Canada
Stepen D Sebestyen, Donald D Ross, James B. Shanley, Emily M. Elliott, Carol Kendall, John L. Campbell, D Bryan Dail, Ivan J Fernandez, Christine L Goodale, Gregory B. Lawrence, Gary M. Lovett, Patrick J McHale, Myron J Mitchell, Sarah J. Nelson, Michelle D Shattuck, Trent R Wickman, Rebecca T. Barnes, Joel T. Bostic, Anthony R Buda, Douglas A Burns, Keith N. Eshleman, Jacques C. Finlay, David M. Nelson, Nobuhito Ohte, Linda H Pardo, Lucy A Rose, Robert J Sabo, Sherry L. Schiff, John Spoelstra, Karl W Williard
2019, Environmental Science and Technology (53) 3620-3633
Little is known about the regional extent and variability of nitrate from atmospheric deposition that is transported to streams without biological processing in forests. We measured water chemistry and isotopic tracers (δ18O and δ15N) of nitrate sources across the Northern Forest...
U.S. Geological Survey—Northern Prairie Wildlife Research Center 2017 research activity report
Mark H. Sherfy, editor(s)
2019, Circular 1451
The mission of Northern Prairie Wildlife Research Center is to provide scientific information needed to conserve and manage the Nation’s natural capital for current and future generations, with an emphasis on migratory birds, Department of the Interior trust resources, and ecosystems of the Nation’s interior. This report provides an overview of...
Climate change effects on deer and moose in the midwest
Sarah R. Weiskopf, Olivia E. LeDee, Laura M. Thompson
2019, Journal of Wildlife Management (83) 769-781
Climate change is an increasing concern for wildlife managers across the United States and Canada. Because climate change may alter populations and harvest dynamics of key species in the region, midwestern states have identified the effects of climate change on ungulates as a priority research area. We conducted a literature...
