Testing models of Laramide orogenic initiation by investigation of Late Cretaceous magmatic-tectonic evolution of the central Mojave sector of the California arc
R.C Economos, Andrew P. Barth, J.L. Wooden, S. R Paterson, Brody Friesenhahn, B.A Weigand, J.L. Anderson, J.L. Roell, E.F. Palmer, A.J. Ianno, Keith A. Howard
2021, Geosphere (17) 2042-2061
The Mojave Desert region is in a critical position for assessing models of Laramide orogenesis, which is hypothesized to have initiated as one or more seamounts subducted beneath the Cretaceous continental margin. Geochronological and geochemical characteristics of Late Cretaceous magmatic products provide the opportunity to test the validity of Laramide...
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...
Monitoring and modeling tree bat (Genera: Lasiurus, Lasionycteris) occurrence using acoustics on structures off the mid-Atlantic coast—Implications for offshore wind development
Michael C. True, Richard J. Reynolds, W. Mark Ford
2021, Animals (11)
In eastern North America, “tree bats” (Genera: Lasiurus and Lasionycteris) are highly susceptible to collisions with wind energy turbines and are known to fly offshore during migration. This raises concern about ongoing expansion of offshore wind-energy development off the Atlantic Coast. Season, atmospheric conditions, and site-level characteristics such...
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...
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...
Modeling marsh dynamics using a 3-D coupled wave-flow-sediment model
Tarandeep S. Kalra, Neil K. Ganju, Alfredo Aretxabaleta, Joel A. Carr, Zafer Defne, Julia Moriarty
2021, Frontiers in Marine Science (8)
Salt marshes are dynamic biogeomorphic systems that respond to external physical factors, including tides, sediment transport, and waves, as well as internal processes such as autochthonous soil formation. Predicting the fate of marshes requires a modeling framework that accounts for these processes in a coupled fashion. In this study, we...
Causes, consequences, and conservation of ungulate migration
Matthew J. Kauffman, Ellen O. Aikens, Saeideh Esmaeili, Petra Kaczensky, Arthur Middleton, Kevin L. Monteith, Thomas A. Morrison, Thomas Mueller, Hall Sawyer, Jacob R. Goheen
2021, Annual Review of Ecology, Evolution, and Systematics (52) 453-478
Our understanding of ungulate migration is advancing rapidly due to innovations in modern animal tracking. Herein, we review and synthesize nearly seven decades of work on migration and other long-distance movements of wild ungulates. Although it has long been appreciated that ungulates migrate to enhance access to forage, recent contributions...
PlioMIP: The Pliocene Model Intercomparison Project
A. M. Haywood, Harry J. Dowsett, PlioMIP1 and PlioMIP2 participants
2021, Past Global Changes Magazine (29) 92-93
PlioMIP is a network of paleoclimate modelers and geoscientists who, through the study of the mid-Pliocene Warm Period (mPWP ~3.3–3.0 million years ago), seek to understand the sensitivity of the climate system to forcings and examine how well models reproduce past climate change....
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...
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...
The AEMON-J “Hacking Limnology” workshop series & virtual summit: Incorporating data science and open science in aquatic research
Michael F. Meyer, Robert Ladwig, Jorrit Mesman, Isabella Oleksy, Carolina C. Barbosa, Kaelin M. Cawley, Alli N. Cramer, Johannes Feldbauer, Patricia Q. Tran, Jacob Aaron Zwart, Gregario A. Lopez Moreira, Muhammed Shikhani, Deviyani Gurung, Robert T. Hensley, Elena Matta, Ryan P. McClure, Thomas Petzoldt, Nuria Sanchez Lopez, Karline Soetaert, Mridul K. Thomas, Simon Nemer Topp, Xiao Yang
2021, Limnology and Oceanography Bulletin (30) 140-143
Following the 2020 “Virtual Summit: Incorporating Data Science and Open Science in Aquatic Research” (DSOS; Meyer and Zwart 2020), a grassroots group of scientists convened the 2nd Virtual DSOS Summit on 22–23 July 2021. DSOS combined forces with the Aquatic Ecosystem MOdeling Network - Junior (AEMON-J; https://github.com/aemon-j) to host a 4-d “Hacking...
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...
System characterization report on Resourcesat-2 Advanced Wide Field Sensor
Shankar N. Ramaseri Chandra, Minsu Kim, Jon Christopherson, Gregory L. Stensaas, Cody Anderson
2021, Open-File Report 2021-1030-G
Executive SummaryThis report addresses system characterization of the Indian Space Research Organisation Resourcesat-2 Advanced Wide Field Sensor (AWiFS) and is part of a series of system characterization reports produced and delivered by the U.S. Geological Survey Earth Resources Observation and Science Cal/Val Center of Excellence in 2021. These reports present...
Northern bobwhite occupancy patterns on multiple spatial scales across Arkansas
E. V. Lassiter, M. Asher, G. Christie, C. Gale, A. Massey, C. Massery, C. R. MIddaugh, J. Veon, Brett Alexander DeGregorio
2021, Journal of Fish and Wildlife Management (12) 502-512
Northern bobwhite Colinus virginianus populations have been rapidly declining in the eastern, central, and southern United States for decades. Land use change and an incompatibility between northern bobwhite resource needs and human land use practices have driven declines. Here, we applied occupancy analyses on two spatial scales (state level and ecoregion level)...
Synergistic interventions to control COVID-19: Mass testing and isolation mitigates reliance on distancing
Emily Howerton, Matthew J. Ferrari, Ottar N Bjornstad, Tiffany L. Bogich, Rebecca K. Borchering, Chris P. Jewell, James D. Nichols, William J.M. Probert, Michael C. Runge, Michael J. Tildesley, Cecile Viboud, Katriona Shea
2021, PLOS Computational Biology (17)
Stay-at-home orders and shutdowns of non-essential businesses are powerful, but socially costly, tools to control the pandemic spread of SARS-CoV-2. Mass testing strategies, which rely on widely administered frequent and rapid diagnostics to identify and isolate infected individuals, could be a potentially less disruptive management strategy,...
Riverscape-scale modeling of fundamentally suitable habitat for mussel assemblages in an Ozark River system, Missouri
K. Keymanesh, Amanda E. Rosenberger, G. Lindner, Kristen L. Bouska, Stephen E. McMurray
2021, Freshwater Mollusk Biology and Conservation (24) 43-58
Identifying the physical habitat characteristics associated with riverine freshwater mussel assemblages is challenging but crucial for understanding the causes of mussel declines. The occurrence of mussels in multispecies beds suggests that common physical factors influence or limit their occurrence. Fine-scale geomorphic and hydraulic factors (e.g., scour, bed stability) are predictive...
Geologic and hydrogeologic characteristics of the White River Formation, Lance Formation, and Fox Hills Sandstone, northern greater Denver Basin, southeastern Laramie County, Wyoming
Timothy T. Bartos, Devin L. Galloway, Laura L. Hallberg, Marieke Dechesne, Sharon F. Diehl, Seth L. Davidson
2021, Scientific Investigations Report 2021-5020
In cooperation with the Wyoming State Engineer’s Office, the U.S. Geological Survey studied the geologic and hydrogeologic characteristics of Cenozoic and Upper Cretaceous strata at a location in southeastern Laramie County within the Wyoming part of the Cheyenne Basin, the northern subbasin of the greater Denver Basin. The study aimed...
Telemetry reveals migratory drivers and disparate space use across seasons and age-groups in American horseshoe crabs
Justin J. Bopp, Matthew Sclafani, Michael G. Frisk, Kim McKown, Catherine Zeigler, David R. Smith, Robert Cerrato
2021, Ecosphere (12)
Identifying mechanisms that underpin animal migration patterns and examining variability in space use within populations is crucial for understanding population dynamics and management implications. In this study, we quantified the migration rates, seasonal changes in migratory connectivity, and residency across population demographics (age and sex) to...
Sustaining transmission in different host species: The emblematic case of Sarcoptes scabiei
E Browne, MM Driessen, Paul C. Cross, L. E. Escobar, Janet E. Foley, Lopez-Olvera, KD Niedringhaus, Liza Rossi, Scott Carver
2021, BioScience
Some pathogens sustain transmission in multiple different host species, but how this epidemiologically important feat is achieved remains enigmatic. Sarcoptes scabiei is among the most host generalist and successful of mammalian parasites. We synthesize pathogen and host traits that mediate sustained transmission and present cases illustrating three transmission mechanisms...
Diagenetic barite-pyrite-wurtzite formation and redox signatures in Triassic mudstone, Brooks Range, northern Alaska
John F. Slack, Ryan J. McAleer, Wayne (Pat) Shanks, Julie A. Dumoulin
2021, Chemical Geology (585)
Mineralogical and geochemical studies of interbedded black and gray mudstones in the Triassic part of the Triassic-Jurassic Otuk Formation (northern Alaska) document locally abundant barite and pyrite plus diverse redox signatures. These strata, deposited in an outer shelf setting at paleolatitudes of ~45 to 60°N, show widespread sedimentological evidence for...
Effects of sea ice decline and summer land use on polar bear home range size in the Beaufort Sea
Anthony M. Pagano, George M. Durner, Todd C. Atwood, David C. Douglas
2021, Ecosphere (12)
Animals responding to habitat loss and fragmentation may increase their home ranges to offset declines in localized resources or they may decrease their home ranges and switch to alternative resources. In many regions of the Arctic, polar bears (Ursus maritimus) exhibit some of the largest home ranges of any quadrupedal...
Grassification and fast-evolving fire connectivity and risk in the Sonoran Desert, United States
Benjamin T. Wilder, Catherine S. Jarnevich, Elizabeth Baldwin, Joseph S. Black, Kim A. Franklin, Perry Grissom, Katherine Hovanes, Aaryn Olsson, Jim Malusa, Abu S.M.G. Kibria, Yue M. Li, Aaron M. Lien, Alejandro Ponce, Julia A. Rowe, Jose Soto, Maya Stahl, Nicholas Young, Julio L. Betancourt
2021, Frontiers in Ecology and Evolution (9)
In the southwestern United States, non-native grass invasions have increased wildfire occurrence in deserts and the likelihood of fire spread to and from other biomes with disparate fire regimes. The elevational transition between desertscrub and montane grasslands, woodlands, and forests generally occurs at ∼1,200 masl and has experienced...
The effects of management practices on grassland birds—Grasshopper Sparrow (Ammodramus savannarum)
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Melvin P. Nenneman, Travis L. Wooten, Betty R. Euliss
2021, Professional Paper 1842-GG
The key to Grasshopper Sparrow (Ammodramus savannarum) management is providing large areas of contiguous grassland of intermediate height with moderately deep litter and low shrub density. Grasshopper Sparrows have been reported to use habitats with 8–166 centimeters (cm) average vegetation height, 4–80 cm visual obstruction reading, 12–95 percent grass cover,...
