Not so normal normals: Species distribution model results are sensitive to choice of climate normals and model type
Catherine S. Jarnevich, Nicholas E. Young
2019, Climate (7) 1-15
Species distribution models have many applications in conservation and ecology, and climate data are frequently a key driver of these models. Often, correlative modeling approaches are developed with readily available climate data; however, the impacts of the choice of climate normals is rarely considered. Here, we produced species distribution models...
Patterns of mercury and selenium exposure in Minnesota common loons
Kevin P. Kenow, Steven C. Houdek, Luke J. Fara, Richard A. Erickson, Brian R. Gray, Travis J. Harrison, Bruce Monson, Carrol L. Henderson
2019, Environmental Toxicology and Chemistry (38) 524-532
Common loons (Gavia immer) are at risk of elevated dietary mercury (Hg) exposure in portions of their breeding range. To assess the level of risk among loons in Minnesota (USA), we investigated loon blood Hg concentrations in breeding lakes across Minnesota. Loon blood Hg concentrations were regressed on predicted Hg...
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...
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 C. 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....
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...
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...
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...
Heat and mass transport in a vapor-dominated hydrothermal area in Yellowstone National Park, USA: Inferences from magnetic, electrical, electromagnetic, subsurface temperature and diffuse CO2 flux measurements
Claire Bouligand, Shaul Hurwitz, Jean Vandemeulebrouck, Svetlana Byrdina, Mason A. Kass, Jennifer L. Lewicki
2019, Journal of Geophysical Research B: Solid Earth (124) 291-309
Vapor‐dominated hydrothermal systems are characterized by localized and elevated heat and gas flux. In these systems, steam and gas ascend from a boiling water reservoir, steam condenses beneath a low‐permeability cap layer, and liquid water descends, driven by gravity (“heat pipe” model). We combine magnetic, electromagnetic, and geoelectrical methods and...
Assessment of Columbia and Willamette River flood stage on the Columbia Corridor Levee System at Portland, Oregon, in a future climate
Susan A. Wherry, Tamara M. Wood, Hans R. Moritz, Keith B. Duffy
2019, Scientific Investigations Report 2018-5161
To support Levee Ready Columbia’s (LRC’s) effort to re-certify levees along the Columbia and Willamette Rivers and remain accredited, two 2-dimensional hydraulic models, Adaptive Hydraulics and Delft3D-Flexible Mesh, were used to simulate the effects of plausible extreme high water during the 2030 to 2059 period. The Columbia River was simulated...
Arizona hedgehog cactus (Echinocereus triglochidiatus var. arizonicus)—A systematic data assessment in support of recovery
Kathryn A. Thomas, Daniel F. Shryock, Todd Esque
2019, Open-File Report 2019-1004
The Arizona hedgehog cactus (Echinocereus triglochidiatus var. arizonicus) is endemic to central Arizona in Gila and Pinal Counties, and has been federally listed as endangered by the U.S. Fish and Wildlife Service (FWS) since 1979. Mining, mineral exploration, and highway development have resulted in habitat degradation and loss of...
Metabolic rhythms in flowing waters: An approach for classifying river productivity regimes
Philip Savoy, Emily S. Bernhardt, Alison P. Appling, James B. Heffernan, Edward G. Stets, Jordan S. Read, Judson Harvey
2019, Limnology and Oceanography (64) 1835-1851
Although seasonal patterns of ecosystem productivity have been extensively described and analyzed with respect to their primary forcings in terrestrial and marine systems, comparatively little is known about these same processes in rivers. However, it is now possible to perform a large‐scale synthesis on the patterns and drivers of river...
Influence of salinity on relative density of American crocodiles (Crocodylus acutus) in Everglades National Park: Implications for restoration of Everglades ecosystems
Frank J. Mazzotti, Brian Smith, Michiko Squires, Michael S. Cherkiss, Seth C Farris, Caitlin Hackett, Kristen M. Hart, Venetia Briggs-Gonzalez, Laura A. Brandt
2019, Ecological Indicators (102) 608-616
The status of the American crocodile (Crocodylus acutus) has long been a matter of concern in Everglades National Park (ENP) due to its classification as a federal and state listed species, its recognition as a flagship species, and its function as an ecosystem indicator. Survival and recovery of American crocodiles...
A hierarchical Bayesian approach for handling missing classification data
Alison C. Ketz, Therese L. Johnson, Mevin Hooten, N. Thompson Hobbs
2019, Ecology and Evolution (9) 3130-3140
Ecologists use classifications of individuals in categories to understand composition of populations and communities. These categories might be defined by demographics, functional traits, or species. Assignment of categories is often imperfect, but frequently treated as observations without error. When individuals are observed but not classified, these “partial” observations must...
Cooperative Fish and Wildlife Research Units program—2018 year in review
John F. Organ, John D. Thompson, Dawn E. Childs, Donald E. Dennerline
2019, Circular 1452
The Cooperative Fish and Wildlife Research Units (CRU) program had an interesting and challenging year in 2018. We made significant strategic advances on many fronts and had setbacks in others.Our relationship with the U.S. Fish and Wildlife Service, the agency we belonged to from 1935 to the mid-1990s, was further...
Isotopic ratios of Saturn's rings and satellites: Implications for the origin of water and Phoebe
Roger N. Clark, Robert H. Brown, D.P. Cruikshank, Gregg A. Swayze
2019, Icarus (40) 431-470
Isotopic ratios have long been used to learn about physical processes acting over a wide range of geological environments, and in constraining the origin and/or evolution of planetary bodies. We report the spectroscopic detection of deuterium in Saturn's rings and satellites, and use these measurements to determine the (D/H) ratios...
Topographic mapping evolution: From field and photogrammetric data collection to GIS production and Linked Open Data
E. Lynn Usery, Dalia E. Varanka, Larry Davis
2019, Cartographic Journal (55) 378-390
Whither the topographic map? Topographic mapping historically has been approached as a map factory operation through the period 1879-1990. During this time, data were field and photogrammetrically collected; cartographically verified and annotated creating a compilation manuscript; further edited, generalized, symbolized, and produced as a graphic output product using lithography, or...
Landscape connectivity planning for adaptation to future climate and land-use change
Jennifer K. Costanza, Adam J. Terando
2019, Current Landscape Ecology Reports (4) 1-13
Purpose of ReviewWe examined recent literature on promoting habitat connectivity in the context of climate change (CC) and land-use change (LUC). These two global change forcings have wide-reaching ecological effects that are projected to worsen in the future. Improving connectivity is a common adaptation strategy,...
Adjudicating groundwater: A judge’s guide to understanding groundwater and modeling
Thomas Harter, Tara Moran, Eric Wildman
Alf Brandt, Michael N. Fienen, Jeremy T. White, editor(s)
2019, Book
Dividing the Waters offers this groundwater science bench book that cannot be matched by any other scientific or judicial publication. Adjudicating Groundwater combines the expertise and experience of academic scientists (UC Davis/Stanford), federal scientists (U.S. Geological Survey), and judicial officers to create a resource that can fulfill the needs of...
