Complex patterns of genetic and morphological differentiation in the Smallmouth Bass subspecies (Micropterus dolomieu dolomieu and M. d. velox) of the Central Interior Highlands
Joe C. Gunn, Leah K. Berkman, Jeff K. Koppelman, A. T. Taylor, Shannon K. Brewer, James M. Long, Lori S. Eggert
2020, Conservation Genetics (21) 891-904
Due to geologic processes and recent anthropogenic introductions, patterns of genetic and morphological diversity within the Smallmouth Bass (Micropterus dolomieu), which are endemic to the central and eastern United States (USA), are poorly understood. We assessed genetic and morphological differentiation between the widespread Northern Smallmouth Bass (M. d. dolomieu) and...
Estimates of groundwater discharge by evapotranspiration, Stump Spring and Hiko Springs, Clark County, southern Nevada, 2016–18
Michael T. Moreo, Susan G. Buto, David W. Smith, Nora C. Nelson
2020, Scientific Investigations Report 2020-5075
This report documents methodology and results of a study that estimated groundwater discharge by evapotranspiration (GWET) from phreatophytic vegetation in two desert riparian areas with ephemeral spring discharge in Clark County, southern Nevada. The phreatophytes consisted primarily of western honey mesquite [Prosopis glandulosa var. torreyana (L.D. Benson) M.C. Johnst.] at Stump Spring and...
Adaptive management in wildlife conservation
John F. Organ, Daniel J. Decker, Shawn J. Riley, John E. Mcdonald Jr., Shane P. Mahoney
2020, Book chapter, The wildlife techniques manual
No abstract available....
Hypogeous, sequestrate fungi (genus Elaphomyces) found at small-mammal foraging sites in high-elevation conifer forests of West Virginia
Corinne A. Diggins, Michael A. Castellano, W. Mark Ford
David Richardson, editor(s)
2020, Northeastern Naturalist (27) N40-N47
Little is known about hypogeous, sequestrate (i.e., truffles) fungi in the eastern United States. Since the fruiting bodies of these fungi are part of the diet of multiple rodent species, filling data gaps is important to understanding more about truffle species distribution and habitat associations. During a microhabitat study on...
Managing state lands for wildlife
Thomas Ryder, John F. Organ
2020, Book chapter, The wildlife techniques manual.
State-owned lands are a vital component of state fish and wildlife management programs because they contain valuable habitats for a diversity of wild species and often provide important public access. The Association of Fish and Wildlife Agencies (AFWA 2017) reported state agencies manage or administer approximately 188 million hectares of...
Cryptic evolved melts beneath monotonous basaltic shield volcanoes in the Galápagos Archipelago
M.J. Stock, D. Geist, DA Neave, M.L.M . Gleason, B. Bernard, Keith A. Howard, I. Buisman, J. Maclennan
2020, Nature Communications (11)
Many volcanoes erupt compositionally homogeneous magmas over timescales ranging from decades to millennia. This monotonous activity is thought to reflect a high degree of chemical homogeneity in their magmatic systems, leading to predictable eruptive behaviour. We combine petrological analyses of erupted crystals with new thermodynamic models...
Biotelemetry data for Golden Eagles (Aquila chrysaetos) captured in coastal southern California, February 2017–December 2019
Jeff A. Tracey, Melanie C. Madden, James C. Molden, Jeremy B. Sebes, Peter H. Bloom, Robert N. Fisher
2020, Data Series 1128
Because of a lack of clarity about the status of golden eagles (Aquila chrysaetos) in coastal southern California, the U.S. Geological Survey, in collaboration with U.S. Fish and Wildlife Service, California Department of Fish and Wildlife, Bureau of Land Management, and San Diego Management and Monitoring Program, began a multi-year...
Geochemical assessment of the Hueco Bolson, New Mexico and Texas, 2016–17
Patricia B. Ging, Delbert G. Humberson, Scott J. Ikard
2020, Scientific Investigations Report 2020-5056
Understanding groundwater quality in transboundary aquifers like the Hueco Bolson is important for the 2.7 million people along the United States and Mexico border living in and near the combined metropolitan areas of Ciudad Juárez, Mexico, and El Paso, Texas, who rely on groundwater for water supply. To better understand...
Quality of pesticide data for groundwater analyzed for the National Water-Quality Assessment Project, 2013–18
Laura M. Bexfield, Kenneth Belitz, Mark W. Sandstrom, Delicia Beaty, Laura Medalie, Bruce D. Lindsey, Lisa H. Nowell
2020, Scientific Investigations Report 2020-5072
The National Water-Quality Assessment (NAWQA) Project of the U.S. Geological Survey (USGS) submitted nearly 1,900 samples collected from groundwater sites across the United States in 2013–18 for analysis of 225 pesticide compounds (pesticides and pesticide degradates, hereafter referred to as “pesticides”) by USGS National Water Quality Laboratory schedule 2437 (S2437)....
Assessing the influence of natural copper-nickel-bearing bedrocks of the Duluth Complex on water quality in Minnesota, 2013–15
Sarah M. Elliott, Perry M. Jones, Laurel G. Woodruff, Carrie E. Jennings, Aliesha L. Krall, Daniel L. Morel
2020, Scientific Investigations Report 2020-5039
The U.S. Geological Survey, in cooperation with the University of Minnesota-Duluth Natural Resources Research Institute, completed an assessment of regional water quality in areas of potential base-metal mining in Minnesota. Bedrock, soil, streambed sediment, and surface-water samples were collected in three watersheds that cross the basal part of the Duluth...
Citizen science collaboration with the U.S. Geological Survey in Alaska
Elizabeth Powers, Dee Williams
2020, Fact Sheet 2020-3026
Citizen science is science undertaken by the public, usually in collaboration with professional scientific institutions. It encourages citizens to tackle real-world scientific problems and augments traditional science by expanding the coverage of data collection and by reducing costs of fieldwork in remote locations. Information collected by volunteers enables us all...
A not so sudden impact—Historical relations between conifers and insects can help predict damage by nonnative insects
Lekeah A. Durden, Ashley N. Schulz, Angela M. Mech, Kathryn A. Thomas
2020, Fact Sheet 2020-3039
The arrival and establishment of nonnative insects in North America is increasingly problematic. International trade has created opportunities to move wood products and nursery stock worldwide, which has increased the risk of insect introduction to regions or countries where they are not native. One group of researchers, the High-impact Insect Invasions Working Group (HIIWG), has developed...
Geological and thermal control of the hydrothermal system in northern Yellowstone Lake: Inferences from high resolution magnetic surveys
Claire Bouligand, Maurice A. Tivey, Carol A. Finn, Lisa A Morgan, W. C. Pat Shanks III, Robert A. Sohn
2020, Journal of Geophysical Research Solid Earth (125)
A multiscale magnetic survey of the northern basin of Yellowstone Lake was undertaken in 2016 as part of the Hydrothermal Dynamics of Yellowstone Lake Project (HD‐YLAKE)—a broad research effort to characterize the cause‐and‐effect relationships between geologic and environmental processes and hydrothermal activity on the lake floor. The magnetic survey includes...
Chemical constituent concentrations in stream water, streambed sediment, and soils of Fort Belvoir, Virginia—A characterization of ambient conditions in 2019
Karen C. Rice, Douglas B. Chambers
2020, Open-File Report 2020-1059
IntroductionThe U.S. Army Fort Belvoir (FTBL) installation is on the banks of the Potomac River in Fairfax County, northeastern Virginia. The installation was founded by the U.S. Army during World War I. It has been home to a variety of military organizations over the course of its more than 100-year...
Groundwater quality in relation to drinking water health standards and geochemical characteristics for 54 domestic wells in Clinton County, Pennsylvania, 2017
John W. Clune, Charles A. Cravotta III
2020, Scientific Investigations Report 2020-5022
Despite the reliance on groundwater by approximately 2.4 million rural Pennsylvania residents, publicly available data to characterize the quality of private well water are limited. As part of a regional effort to characterize groundwater in rural areas of Pennsylvania, samples from 54 domestic wells in Clinton County were collected and...
A standard operating procedure for the preparation of purposely killed juvenile salmon used to test survival model assumptions
Ryan G. Tomka, Theresa L. Liedtke, Conrad Frost, Collin D. Smith
2020, Open-File Report 2020-1083
This document describes a standard operating procedure (SOP) for the preparation of purposely killed juvenile salmon, implanted with telemetry transmitters, to be released into rivers, lakes, or streams to test one of the survival model assumptions. Procedures for releases of purposely killed fish (hereinafter dead fish releases) were developed by...
The role of phosphorus and nitrogen on chlorophyll a: Evidence from hundreds of lakes
Zhongyao Liang, Patricia A. Soranno, Tyler Wagner
2020, Water Research (185)
The effect of nutrients on phytoplankton biomass in lakes continues to be a subject of debate by aquatic scientists. However, determining whether or not chlorophyll a (CHL) is limited by phosphorus (P) and/or nitrogen (N) is rarely considered using a probabilistic method in studies of hundreds of lakes across broad spatial extents....
Evidence for a diagenetic origin of Vera Rubin Ridge, Gale Crater, Mars: Summary and synthesis of Curiosity's exploration campaign
Abigail A. Fraeman, Lauren A. Edgar, Elizabeth B. Rampe, Lucy M. Thompson, Jens Frydenvang, Christopher M. Fedo, Jeff G. Catalano, William E. Dietrich, Travis S. J. Gabriel, John P. Grotzinger, Jonas L’Haridon, Nicholas Mangold, Vivian Z. Sun, Christopher H House, Alexander Bryk, Craig Hardgrove, Sean Czarnecki, Kathryn M. Stack, Richard V. Morris, Ray E. Arvidson, Steve G. Banham, Kristen A. Bennett, Jon C. Bridges, Christopher S. Edwards, Woodward W. Fischer, Valerie K. Fox, Sanjeev Gupta, Briony H. N. Horgan, Sammantha R. Jacob, Jeffrey R. Johnson, Sarah S. Johnson, David R. Rubin, Mark R Salvatore, Susanne P. Schwenzer, Kirsten L. Siebach, Nathan T. Stein, Stuart Turner, Danika F. Wellington, Roger C. Wiens, Amy J. Williams, G.A. Davidson, Gregory M. Wong
2020, Journal of Geophysical Research: Planets (125)
This paper provides an overview of the Curiosity rover's exploration at Vera Rubin ridge (VRR) and summarizes the science results. VRR is a distinct geomorphic feature on lower Aeolis Mons (informally known as Mount Sharp) that was identified in orbital data based on its distinct texture, topographic expression, and association with a...
A guidebook to spatial datasets for conservation planning under climate change in the Pacific Northwest
Jennifer M. Cartwright, Travis Belote, Kyle W. Blasch, Steve Campbell, Jeanne C. Chambers, Raymond J. Davis, Solomon Dobrowski, Jason B. Dunham, Diana Gergel, Daniel Isaak, Kristin Jaeger, Meade Krosby, Jesse Langdon, Joshua J. Lawler, Caitlin E. Littlefield, Charles H. Luce, Jeremy D Maestas, Anthony Martinez, Arjan J.H. Meddens, Julia Michalak, Sean A. Parks, Wendy Peterman, Ken Popper, Chris Ringo, Roy Sando, Michael Schindel, Diana Stralberg, David M. Theobald, Nathan Walker, Chad Wilsey, Zhiqiang Yang, Andrew Yost
Jennifer M. Cartwright, editor(s)
2020, Report
This guidebook provides user-friendly overviews of a variety of spatial datasets relevant to conservation and management of natural resources in the face of climate change in the Pacific Northwest, United States. Each guidebook chapter was created using a standardized template to summarize a spatial dataset or a group of closely...
Thiamine concentrations in lake trout and Atlantic salmon eggs during 14 years following the invasion of alewife in Lake Champlain
Bret J. Ladago, Matthew H. Futia, William R. Ardren, Dale C. Honeyfield, Kevin P. Kelsey, Carrie L. Kozel, Stephen Riley, Jacques Rinchard, Donald E. Tillitt, James L. Zajicek, J. Ellen Marsden
2020, Journal of Great Lakes Research (45) 1340-1348
Thiamine (vitamin B1) deficiency in Great Lakes salmonines has been linked to consumption of alewife Alosa pseudoharengus. Thiamine deficiency has been recognized as a possible impediment to lake trout Salvelinus namaycush recruitment in the Great Lakes and Atlantic salmon Salmo salar recruitment in the Finger Lakes and Baltic Sea. Alewife invaded Lake Champlain in 2003...
Sediment delivery to marsh platforms minimized by source decoupling and flux convergence
Daniel Coleman, Neil K. Ganju, Matthew Kirwan
2020, Geophysical Research Letters (125)
Sediment supply is a primary factor in determining marsh response to sea level rise and is typically approximated through high‐resolution measurements of suspended sediment concentrations (SSCs) from adjacent tidal channels. However, understanding sediment transport across the marsh itself remains limited by discontinuous measurements of SSC over individual...
Integrating perspectives to understand lake ice dynamics in a changing world
Sapna Sharma, Michael F. Meyer, Joshua Culpepper, Xiao Yang, Stephanie Hampton, Stella A. Berger, Matthew R. Brousil, Steven C. Fradkin, Scott N. Higgins, Kathi Jo Jankowski, Georgiy Kirillin, Adrianne P Smits, Emily C. Whitaker, Foad Yousef, Shuai Zhang
2020, Journal of Geophysical Research: Biogeosciences (125)
Ice cover plays a critical role in physical, biogeochemical, and ecological processes in lakes. Despite its importance, winter limnology remains relatively understudied. Here, we provide a primer on the predominant drivers of freshwater lake ice cover and the current methodologies used to study lake ice, including in...
Importance of accurately quantifying internal loading in developing phosphorus reduction strategies for a chain of shallow lakes
Dale M. Robertson, Matthew W. Diebel
2020, Lake and Reservoir Management (36) 391-411
The Winnebago Pool is a chain of 4 shallow lakes in Wisconsin. Because of high external phosphorus (P) inputs to the lakes, the lakes became highly eutrophic, with much P contained in their sediments. In developing a total maximum daily load (TMDL) for these lakes, it is...
Comparison of storm runoff models for a small watershed in an urban metropolitan area, Albuquerque, New Mexico
Zachary M. Shephard, Kyle R. Douglas-Mankin
2020, Scientific Investigations Report 2020-5058
In order to comply with a current U.S. Environmental Protection Agency watershed-based National Pollutant Discharge Elimination System permit, the City of Albuquerque required a better understanding of the rainfall-runoff processes in its small urban watersheds. That requirement prompted the initiation of the assessment of three existing watershed models that were...
Large-scale erosion driven by intertidal eelgrass loss in an estuarine environment
Ryan K. Walter, Jenifer K. O’Leary, Sean Vitousek, Mohsen Taherkhani, Carolyn Geraghty, Ann Kitajima
2020, Estuarine, Coastal and Shelf Science (243)
Seagrasses influence local hydrodynamics by inducing drag on the flow and dampening near-bed velocities and wave energy. When seagrasses are lost, near-bed currents and wave energy can increase, which enhances bottom shear stresses, destabilizes sediment, and promotes suspension and erosion. Though seagrasses are being lost rapidly globally, the magnitude of...
