The Boreal-Arctic Wetland and Lake Dataset (BAWLD)
David Olefeldt, Mikael Hovemyr, M.A. Kuhn, D Bastviken, T.J. Bohn, J. Connolly, P.M. Crill, E.S. Euskirchen, S.A. Finkelstein, H. Genet, G. Grosse, L.I. Harris, L. Heffernan, M. Helbig, G. Hugelium, R. Hutchins, S. Juutinen, M.J. Lara, A. Malhotra, Kristen L. Manies, A.D. McGuire, S.M. Natali, J. A. O’Donnell, F-J.W. Parmentier, A. Rasanen, C. Schaedel, O. Sonnentag, M. Strack, S.E. Tank, C. C. Treat, R.K. Varner, T. Virtanen, J.D. Watts, R.K. Warren
2021, Earth System Science Data (13) 5127-5149
Methane emissions from boreal and arctic wetlands, lakes, and rivers are expected to increase in response to warming and associated permafrost thaw. However, the lack of appropriate land cover datasets for scaling field-measured methane emissions to circumpolar scales has contributed to a large uncertainty for our understanding of present-day and...
Regression models for estimating sediment, nutrient concentrations and loads at School Branch at Brownsburg, Indiana, June 2015 through February 2019
Myles S. Downhour, Aubrey R. Bunch, Timothy R. Lathrop
2021, Scientific Investigations Report 2021-5099
Sediment and nutrient transport in the School Branch watershed (in central Indiana west of Indianapolis) is considered to be heavily affected by agricultural land use throughout the watershed. In 2015, the U.S. Geological Survey, in cooperation with the Indiana Department of Environmental Management, deployed continuous water-quality monitors and began collecting...
Groundwater/surface-water interactions in the Partridge River Basin and evaluation of hypothetical future mine pits, Minnesota
Megan J. Haserodt, Randall J. Hunt, Michael N. Fienen, Daniel T. Feinstein
2021, Scientific Investigations Report 2021-5038
The Partridge River Basin (PRB) covers 156 square miles in northeastern Minnesota with headwaters in the Mesabi Iron Range. The basin is characterized by extensive wetlands, lakes, and streams in poorly drained and often thin glacial material overlying Proterozoic bedrock. To better understand the interaction between these extensive surface water...
Groundwater hydrology and chemistry of Jamestown Island, Virginia—Potential effects of tides, storm surges, and sea-level rise on archaeological, cultural, and ecological resources
Kurt J. McCoy, Karen C. Rice, Ellyn Rickles, Dave Frederick, Jennifer Cramer, Dorothy Geyer
2021, Scientific Investigations Report 2021-5117
As the site of the first permanent English settlement in North America in 1607, Jamestown Island, Colonial National Historical Park (COLO), Virginia, contains a rich archaeological record that extends from the Paleoindian period (15,000 to 8,000 years ago) through the 20th century. The island is located on the lower James...
Distribution of tiger salamanders in northern Sonora, Mexico: Comparison of sampling methods and possible implications for an endangered subspecies
Blake R. Hossack, Julio A. Lemos-Espinal, Brent H. Sigafus, Erin L. Muths, Gerardo Carreon Arroyo, Daniel Toyos Martinez, David Hurtado Felix, Guillermo Molina Padilla, Caren S. Goldberg, T. R. Jones, M. J. Sredl, Thierry Chambert, J. C. Rorabaugh
2021, Amphibia-Reptilia (43) 13-23
Many aquatic species in the arid USA-Mexico borderlands region are imperiled, but limited information on distributions and threats often hinders management. To provide information on the distribution of the Western Tiger Salamander (Ambystoma mavortium), including the USA-federally endangered Sonoran Tiger Salamander (Ambystoma mavortium stebbinsi), we used traditional (seines, dip-nets) and...
Seven decades of coastal change at Barter Island, Alaska: Exploring the importance of waves and temperature on erosion of coastal permafrost bluffs
Ann E. Gibbs, Li H. Erikson, Benjamin M. Jones, Bruce M. Richmond, Anita C Engelstad
2021, Remote Sensing (13)
Observational data of coastal change over much of the Arctic are limited largely due to its immensity, remoteness, harsh environment, and restricted periods of sunlight and ice-free conditions. Barter Island, Alaska, is one of the few locations where an extensive, observational dataset exists, which enables a detailed assessment of the...
Loop-mediated isothermal amplification (LAMP) assay for detection of Asian fish tapeworm, Schyzocotyle acheilognathi (Yamaguti, 1934) [syn. Bothriocephalus acheilognathi]
Erik K. Hofmeister, Fiona Antigoni Georgousi, Melissa Lund, Constance Roderick, Anindo Choudhury, Gary Whelan, Rebecca A. Cole
2021, Journal of Parasitology (107) 846-852
The Asian fish tapeworm (Schyzocotyle acheilognathi syn. Bothriocephalus acheilognathi) (AFT) is an invasive parasite that can infect many species of fish, although most hosts are primarily members of Cyprinidae. Pathogenicity has most often been reported in aquaculture settings in fry and fingerling stages of carp (Cyprinus spp.). More recently, it...
Expanding freshwater biologger studies to view fish as environmental sensing platforms
Richard Kraus, Helen Bontrager, Chris Vandergoot, Matthew Faust
2021, Marine and Freshwater Research (73) 133-139
While recording fish habitat use by electronic sensors, biologgers can also be viewed as autonomous environmental monitoring systems with the organism as a vehicle. This dual perspective has provided novel results from marine ecosystems, but has not been applied to freshwater ecosystems. To understand limitations in fresh water,...
A basin-scale approach to estimating recharge in the desert: Anza-Cahuilla groundwater basin, CA
Michelle A. Stern, Lorraine E. Flint, Alan L. Flint, Allen H. Christensen
2021, Journal of the American Water Resources Association (57) 990-1003
The Anza-Cahuilla groundwater basin located mainly in the semi-arid headwaters of the Santa Margarita River watershed in southern California is the principle source of groundwater for a rural disadvantaged community and two Native American Tribes, the Ramona Band of Cahuilla and the Cahuilla. Groundwater in the study area is derived...
Geologic map of the State of Hawaii
David R. Sherrod, John M. Sinton, Sarah E. Watkins, Kelly M. Brunt
2021, Scientific Investigations Map 3143
This geologic map and its digital databases present the geology of the eight major islands of the State of Hawaiʻi. The map should serve as a useful guide to anyone studying the geologic setting and history of Hawai‘i, including ground- and surface-water resources, economic deposits, and landslide or volcanic hazards....
Long-term Mississippi River trends expose shifts in the river load response to watershed nutrient balances between 1975 and 2017
Sarah M. Stackpoole, Robert D. Sabo, James A. Falcone, Lori A. Sprague
2021, Water Resources Research (57)
Excess nutrients transported by the Mississippi River (MR) contribute to hypoxia in the Gulf of Mexico. Nutrient balances are key drivers to river nutrient loads and represent inputs (fertilizer, manure, deposition, wastewater, N-fixation, and weathering) minus outputs (nutrient uptake and removal in harvest, and N emissions)....
Small shorebirds feast on green slime to fuel their long migration
Laurie Anne Hall, Susan E.W. De La Cruz, Isa Woo, Tomohiro Kuwae, David Mcgovern Nelson, John Y. Takekawa
2021, Frontiers for Young Minds (9)
Shorebirds wade in shallow waters along shorelines searching for food. More than a million shorebirds visit the San Francisco Estuary each year during their migration to feast on the insects, worms, clams, and crabs that live on or under the surface of the sand or mud. The abundant food...
Environmental DNA surveys of Burmese pythons in the Greater Everglades Ecosystem
Caitlin E. Beaver, Gaia Meigs-Friend, Margaret E. Hunter
2021, Open-File Report 2021-1082
Improving the probability of detecting invasive giant snakes is vital for the management of emerging or established populations. Burmese pythons occupy thousands of square kilometers of mostly inaccessible habitats in Florida. Environmental DNA (eDNA) methods have been shown to be time and cost effective in a number of systems...
Movement dynamics and survival of stocked Colorado River Cutthroat Trout
Alex G. LeCheminant, Gabriel M. Barrile, Shannon E. Albeke, Annika W. Walters
2021, Transactions of the American Fisheries Society (150) 679-693
The ability of native fish to establish self-sustaining populations when reintroduced to vacant habitats is variable. We evaluated factors that potentially affect the reintroduction success of juvenile Colorado River Cutthroat Trout Oncorhynchus clarkii pleuriticus that were reintroduced to an isolated watershed and were experiencing suboptimal survival and recruitment. We conducted a 3-year...
Diet composition of the African manatee: Spatial and temporal variation within the Sanaga River Watershed, Cameroon
Aristide Takoukam Kamla, Dylan G. E. Gomes, Cathy Beck, Lucy W. Keith-Diagne, Margaret Hunter, Ruth Francis-Floyd, Robert K. Bonde
2021, Ecology and Evolution (11) 15833-15845
The present study aimed to investigate the diet of African manatees in Cameroon to better inform conservation decisions within protected areas. A large knowledge gap on diet and seasonal changes in forage availability limits the ability to develop informed local management plans for the African manatee in much of its...
Postcards from the field
G. Lynn Wingard
2021, Newsletter
My research focuses on pre-20th century conditions in the Greater Everglades Ecosystem of south Florida to provide the context for resource managers to set targets for restoration. A primary goal of Everglades restoration is to re-establish more natural delivery of freshwater to the wetlands and estuaries in the region....
Numerical simulation of the boundary layer flow generated in Monterey Bay, California by the 2010 Chilean tsunami: Case study
Athanasios Makris, Jessica R. Lacy, David R. Fuhrman
2021, Journal of Waterway, Port, Coastal, and Ocean Engineering (147)
This work presents a case study involving the numerical simulation of the unsteady boundary layer generated by the 2010 Chilean tsunami, as measured by field equipment in Monterey Bay, California, USA. A one-dimensional vertical (1DV) boundary layer model is utilized, solving Reynolds-averaged Navier–Stokes equations, coupled with two-equation k–ω turbulence closure. Local effects...
Synthesis of data and studies relating to Delta Smelt biology in the San Francisco Estuary, emphasizing water year 2017
Shawn Acuna, Randy Baxter, Aaron J. Bever, Larry R. Brown, Christina Burdi, Gonzalo Castillo, Louise Conrad, Steven Culberson, Lauren Damon, Jared Frantzich, Lenny Grimaldo, Bruce Hammock, April Hennessy, James A. Hobbs, Shruti Khanna, Peggy W. Lehman, Michael L. MacWilliams, Brian Mahardja, Andrew A. Schultz, Steven B. Slater, Ted Sommer, Swee Teh, Janet Thompson
2021, Interagency Ecological Program Technical Report 95
In the San Francisco Estuary (SFE), the effects of freshwater flow on the aquatic ecosystem have been studied extensively over the years and remains a contentious management issue. It is especially contentious with regards to the Delta Smelt (Hypomesus transpacificus), a species endemic to the SFE that has been listed...
Enhancing marsh elevation using sediment augmentation: A case study from southern California, USA
Evyan Borgnis Sloane, Karen M. Thorne, Christine R Whitcraft, Victoria Touchstone
2021, Shore & Beach (89)
Tidal marshes are an important component of estuaries that provide habitat for fish and wildlife, protection from flooding, recreation opportunities, and can improve water quality. Critical to maintaining these functions is vertical accretion, a key mechanism by which tidal marshes...
Chesapeake Bay: A case study in resiliency and restoration
Richard R Arnold, William C. Dennison, Louis A. Etgen, Peter Goodwin, Michael Paolisso, Gary W. Shenk, Ann Swanson, Nguyen Vargas
2021, Hydrolink (1) 25-28
Chesapeake Bay (“mother of waters” or the “great shellfish Bay” in Algonquin), is the largest estuary in the United States and arguably the best studied estuary in the world. Chesapeake Bay is immense, with the main stem stretching 200 nautical miles (315 km) from the mouth of the Susquehanna River...
Geoelectric survey of the Granite Gravel aquifer, Llano Uplift, Central Texas, to determine locations for water wells
Scott Ikard, David S. Wallace, Andrew Teeple, Gregory Stanton
2021, Journal of Applied Geophysics (195)
An electrical geophysical survey was completed within a small area of the Llano Uplift of central Texas to determine locations to install two water wells in the Granite Gravel aquifer (GGA). Electrical resistivity tomography (ERT) was performed along two 188-m long...
Geohydrologic and water-quality characterization of a fractured-bedrock test hole in an area of Marcellus Shale gas development, Sullivan County, Pennsylvania
Dennis W. Risser, John Williams, Aaron D. Bierly
2021, Open-File Report OFMI 21-02.0
The stratigraphy, water-bearing zones, and quality of groundwater were characterized in a 1,400-ft-deep test hole drilled during 2013 in fractured bedrock in Sullivan County, Pa., by collection and analysis of measurements made during drilling, geophysical logs, and depth-specific hydraulic tests and water samples. The multidisciplinary characterization of the test hole...
Elevation and elevation-change maps of Fountain Creek, southeastern Colorado, 2015-20
Laura A. Hempel, Andrea L. Creighton, Andrew R. Bock
2021, Scientific Investigations Map 3481
The U.S. Geological Survey, in cooperation with Colorado Springs Utilities, has collected topographic data annually since 2012 at 10 study areas along Fountain Creek, southeastern Colorado. The 10 study areas were located between Colorado Springs and the terminus of Fountain Creek at the Arkansas River in Pueblo. The purpose of...
Concentration-discharge relationships of dissolved rhenium in Alpine catchments reveal its use as a tracer of oxidative weathering
Robert Hilton, Jens M. Turowski, Matthew Winnick, Mathieu Dellinger, Patrick Schleppi, Kenneth H. Williams, Corey Lawrence, Katharine Maher, Martin West, Amanda Hayton
2021, Water Resources Research (57)
Oxidative weathering of sedimentary rocks plays an important role in the global carbon cycle. Rhenium (Re) has been proposed as a tracer of rock organic carbon (OCpetro) oxidation. However, the sources of Re and its mobilization by hydrological processes remain poorly constrained. Here we examine dissolved Re...
Editorial: Environmental DNA innovations for conservation
Matthew A Barnes, Katy E. Klymus, Hiroki Yamanaka
2021, Frontiers in Ecology and Evolution (9)
Environmental DNA (eDNA) analysis refers to the collection of bulk environmental samples such as water, sediment, or air, and studying the genetic remnants that organisms have shed into their environment to gain information about species presence....
