Genetic structure of Maryland Brook Trout populations: Management implications for a threatened species
Raymond P. Morgan II, David C. Kazyak, Tim L. King, Barbara A. Lubinski, Matthew T. Sell, Alan A Heft, Jess W Jones
2021, North American Journal of Fisheries Management (41) 1097-1119
Brook Trout Salvelinus fontinalis have declined across their native range due to multiple anthropogenic factors, including landscape alteration and climate change. Although coldwater streams in Maryland (eastern United States) historically supported significant Brook Trout populations, only fragmented remnant populations remain, with the exception of the upper Savage River...
Earthquake magnitudes from dynamic strain
Andrew J. Barbour, John O. Langbein, Noha Sameh Ahmed Farghal
2021, Bulletin of the Seismological Society of America (111) 1325-1346
Dynamic strains have never played a role in determining local earthquake magnitudes, which are routinely set by displacement waveforms from seismic instrumentation (e.g., ML). We present a magnitude scale for local earthquakes based on broadband dynamic strain waveforms. This scale is derived from the peak...
Distribution, abundance, and genomic diversity of the endangered antioch dunes evening primrose (Oenothera deltoides subsp. howellii) surveyed in 2019
Karen M. Thorne, Amy G. Vandergast, editor(s)
2021, Open-File Report 2021-1017
Sand dune ecosystems are highly dynamic landforms found along coastlines and riverine deltas where a supply of sand-sized material is available to be delivered by aquatic and wind environments. These unique ecosystems provide habitat for a variety of endemic and rare plant and animal species. Sand dunes have been affected...
The 2018 update of the US National Seismic Hazard Model: Ground motion models in the central and eastern US
Sanaz Rezaeian, Peter M. Powers, Allison M. Shumway, Mark D. Petersen, Nico Luco, Arthur D. Frankel, Morgan P. Moschetti, Eric M. Thompson, Daniel McNamara
2021, Earthquake Spectra (37) 1354-1390
The United States Geological Survey (USGS) National Seismic Hazard Model (NSHM) is the scientific foundation of seismic design regulations in the United States and is regularly updated to consider the best available science and data. The 2018 update of the conterminous US NSHM includes major changes to the underlying ground...
The Robinson Forest environmental monitoring network: Long‐term evaluation of streamflow and precipitation quantity and stream‐water and bulk deposition chemistry in eastern Kentucky watersheds
Kenton Sena, Chris D. Barton, Tanja N. Williamson
2021, Hydrological Processes (35)
The University of Kentucky (U KY) has owned Robinson Forest (37.460723° N, 83.158598° W) since 1923, conducting experiments crucial to understanding the environmental effects of land management in the region. Part of the management of Robinson Forest has been collection of environmental data, including precipitation quantity, bulk‐deposition chemistry, streamflow, stream‐water...
Dating fault damage along the eastern Denali fault zone with hematite (U-Th)/He thermochronometry
Robert G. McDermott, Alexis K. Ault, Jonathan Saul Caine
2021, Earth and Planetary Science Letters (563)
Unraveling complex slip histories in fault damage zones to understand relations among deformation, hydrothermal alteration, and surface uplift remains a challenge. The dextral eastern Denali fault zone (EDFZ; southwest Yukon, Canada) bounds the Kluane Ranges and hosts a variety of fault-related rocks, including hematite fault surfaces, which have been exhumed...
Organic geochemistry and petrology of Devonian shale in eastern Ohio: Implications for petroleum systems assessment
Paul C. Hackley, Robert T. Ryder
2021, American Association of Petroleum Geologists Bulletin (105) 543-573
Recent production of light sweet oil has prompted reevaluation of Devonian petroleum systems in the central Appalachian Basin. Upper Devonian Ohio Shale (lower Huron Member) and Middle Devonian Marcellus Shale organic-rich source rocks from eastern Ohio and nearby areas were examined using organic petrography and geochemical analysis of solvent extracts...
Organic petrology and geochemistry of the Sunbury and Ohio Shales in eastern Kentucky and southeastern Ohio
Cortland F. Eble, Paul C. Hackley, Thomas M. Parris, Stephen F. Greb
2021, AAPG Bulletin (105) 493-515
As part of a study to determine the origin of oil and gas in the Berea Sandstone in northeastern Kentucky and southeastern Ohio, 158 samples of organic-rich shale from the Upper Devonian Olentangy and Ohio Shales and the Lower Mississippian Sunbury Shale, collectively referred to as the “black shale,”...
Oil–source correlation studies in the shallow Berea Sandstone petroleum system, eastern Kentucky
Paul C. Hackley, T.M. Parris, C. F. Eble, S. F. Greb, D.C. Harris
2021, American Association of Petroleum Geologists Bulletin (105) 517-542
Shallow production of sweet high-gravity oil from the Upper Devonian Berea Sandstone in northeastern Kentucky has caused the region to become the leading oil producer in the state. Potential nearby source rocks, namely, the overlying Mississippian Sunbury Shale and underlying Ohio Shale, are immature for commercial oil generation according to...
Mixed evidence for biotic homogenization of southern Appalachian fish communities
Kelly N. Petersen, Mary Freeman, Joseph E. Kirsch, William O McLarney, Mark C Scott, Seth J. Wenger
2021, Canadian Journal of Fisheries and Aquatic Sciences (78) 1397-1406
Anthropogenic impacts on the landscape can drive biotic homogenization, whereby distinct biological communities become more similar to one another over time. Land-use change in the Southern Appalachian region is expected to result in homogenization of the highly diverse freshwater fish communities as in-stream habitat alterations favor widespread cosmopolitan...
Lava effusion rate evolution and erupted volume during the 2018 Kīlauea lower East Rift Zone eruption
Hannah R. Dietterich, Angela K. Diefenbach, S. Adam Soule, Michael H. Zoeller, Matthew R. Patrick, J. J. Major, Paul R. Lundgren
2021, Bulletin of Volcanology (83)
The 2018 eruption on the lower East Rift Zone of Kīlauea Volcano produced one of the largest and most destructive lava flows in Hawai’i during the past 200 years. Over the course of more than 3 months, twenty-four fissures erupted, and the rate of lava effusion varied by two orders...
American Woodcock singing-ground survey: Comparison of four models for trend in population size
John R. Sauer, William Link, Mark E Seamans, Rebecca D. Rau
2021, Journal of Fish and Wildlife Management (12) 83-97
Wildlife biologists monitor the status and trends of American woodcock Scolopax minor populations in the eastern and central United States and Canada via a singing-ground survey, conducted just after sunset along roadsides in spring. Annual analyses of the survey produce estimates of trend and annual indexes of abundance for 25 states and...
Assessment of groundwater trends near Crex Meadows, Wisconsin
Megan J. Haserodt, Michael N. Fienen
2021, Scientific Investigations Report 2020-5149
Crex Meadows Wildlife Area (Crex) is a 30,000-acre property in Burnett County, Wisconsin. Crex is managed by the Wisconsin Department of Natural Resources (WDNR) with the goal of providing public recreation opportunities while also protecting the quality of native ecological communities and species on the property. The WDNR’s management strategy...
Assessment of water availability in the Osage Nation using an integrated hydrologic-flow model
Jonathan P. Traylor, Shana L. Mashburn, Randall T. Hanson, Steven M. Peterson
2021, Scientific Investigations Report 2020-5141
The Osage Nation of northeastern Oklahoma, conterminous with Osage County, covers about 2,900 square miles. The area is primarily rural with 62 percent of the land being native prairie grass, and much of the area is used for cattle ranching and extraction of petroleum and natural gas. Protection of water...
Rapid strain release on the Bear River fault zone, Utah–Wyoming—The impact of preexisting structure on the rupture behavior of a new normal fault
Suzanne Hecker, David P. Schwartz, Stephen B. DeLong
2021, Tectonophysics (808)
Earthquake clustering (grouping in space and time) is a widely observed mode of strain release in the upper crust, although this behavior on individual faults is a departure from classic elastic rebound theory. In this study, we consider factors responsible for a...
Using bottom trawls to monitor subsurface water clarity in marine ecosystems
Sean K. Rohan, Stan Kotwicki, Kelly A. Kearney, Jennifer A Schulien, Edward A. Laman, Edward D. Cokelet, David Beauchamp, Lyle L. Britt, Kerim Y. Aydin, Stephani G. Zador
2021, Progress in Oceanography (194)
Biophysical processes that affect subsurface water clarity play a key role in ecosystem function. However, subsurface water clarity is poorly monitored in marine ecosystems because doing so requires in-situ sampling that is logistically difficult to conduct and sustain. Novel solutions are...
Comparative morphology of freshwater sculpin inhabiting different environmental conditions in the Chesapeake Bay headwaters
Nathaniel P. Hitt, Karmann G. Kessler, Hannah Eisemann Macmillan, Karli M. Rogers, Richard L. Raesly
2021, Environmental Biology of Fishes (104) 309-324
We compared body morphology of two freshwater sculpin taxa that inhabit distinct environmental conditions in the Chesapeake Bay watershed of eastern North America: Potomac sculpin (C. girardi, Robins; PS) and checkered sculpin (C. sp. cf. girardi; CS). Both taxa are endemic to the study area, but PS are more broadly distributed than...
Linking altered flow regimes to biological condition: An example using benthic macroinvertebrates in small streams of the Chesapeake Bay watershed
Kelly O. Maloney, Daren M. Carlisle, Claire Buchanan, Jennifer L. Rapp, Samuel H. Austin, Matthew J. Cashman, John A. Young
2021, Environmental Management (67) 1171-1185
Regionally scaled assessments of hydrologic alteration for small streams and its effects on freshwater taxa are often inhibited by a low number of stream gages. To overcome this limitation, we paired modeled estimates of hydrologic alteration to a benthic macroinvertebrate index of biotic integrity data for 4522 stream reaches across...
Eastward expansion of Round Goby in New York: Assessment of detection methods and current range
Scott D. George, Barry P. Baldigo, Christopher B. Rees, Meredith L. Bartron, Dylan R. Winterhalter
2021, Transactions of the American Fisheries Society (150) 258-273
The Round Goby Neogobius melanostomus has spread rapidly around the Great Lakes region since its introduction to North America in 1990. In 2014, a specimen was captured in the New York State Canal System west of Utica, prompting concerns that Round Goby would soon reach the ecologically and...
U.S. Geological Survey migratory bird science, 2020–21
Aaron T. Pearse, Mark H. Sherfy, Mark Wimer, Mona Khalil, Mark T. Wiltermuth
2021, Circular 1480
Bird conservation as an endeavor engages a broad range of partners and a coordinated effort across State and Federal agencies, nongovernment organizations, universities and, at times, international partnerships. To understand information needs and respond to the many challenges in bird conservation, U.S. Geological Survey (USGS) scientists participate in Flyway...
Continent-wide tree fecundity driven by indirect climate effects
James S. Clark, Robert A. Andrus, Melaine Aubry-Kientz, Yves Bergeron, Michal Bogdziewicz, Don C. Bragg, Dale G. Brockway, Natalie L. Cleavitt, Susan Cohen, Benoit Courbaud, Robert Daley, Adrian Das, Michael Dietze, Timothy J. Fahey, Istem Fer, Jerry F. Franklin, Catherine A. Gehring, Gregory S. Gilbert, Catheryn H Greenberg, Qinfeng Guo, Janneke Hille Ris Lambers, Ines Ibanez, Jill F. Johnstone, Christopher L. Kilner, Johannes M.H. Knops, Walter D. Koenig, Georges Kunstler, Jalene M. LaMontagne, Kristin L Legg, Jordan Luongo, James A. Lutz, Diana Macias, Eliot J. B. McIntire, Yassine Messaoud, Christopher M. Moore, Emily V. Moran, Orrin B Myers, Chase Nunez, Robert Parmenter, Scott Pearson, Renata Poulton Kamakura, Ethan Ready, Miranda D. Redmond, Chantal D. Reid, Kyle C. Rodman, C. Lane Scher, Wiliam H Schlesinger, Amanda M Schwantes, Erin Shanahan, Shubhi Sharma, Michael A. Steele, Nathan L. Stephenson, Samantha Sutton, Jennifer J. Swenson, Margaret Swift, Thomas T. Veblen, Amy V. Whipple, Thomas G. Whitham, Andreas P. Wion, Kai Zhu, Roman Zlotin
2021, Nature Communications (12)
Indirect climate effects on tree fecundity that come through variation in size and growth (climate-condition interactions) are not currently part of models used to predict future forests. Trends in species abundances predicted from meta-analyses and species distribution models will be misleading if they depend on the...
Developing species-age cohorts from forest inventory and analysis data to parameterize a forest landscape model
Richard H. Odom, W. Mark Ford
2021, International Journal of Forestry Research (2021)
Simulating long-term, landscape level changes in forest composition requires estimates of stand age to initialize succession models. Detailed stand ages are rarely available, and even general information on stand history often is lacking. We used data from USDA Forest Service Forest Inventory and Analysis (FIA) database to estimate broad age...
Organic petrographic evaluation of carbonaceous material in sediments of the Kinnickinnic River, Milwaukee, WI, U.S.A.
Brett J. Valentine, John H Krahling, Stephen D. Mueller
2021, Science of the Total Environment (782)
This study examines the use of organic petrology techniques to quantify the amount of coal and carbonaceous combustion by-products (i.e., coke, coal tar/pitch, cenospheres) in sediments taken from the Kinnickinnic River adjacent to the former site of the Milwaukee Solvay Coke and Gas Company....
Compilation of information on occurrence and conservation status for the freshwater mussel fauna of Nebraska, Kansas, and Oklahoma
Natasha B. Carr, Tammy S. Fancher
2021, Data Series 1133
The purpose of this data series is to compile information on the occurrence and conservation status of the freshwater mussel fauna of Nebraska, Kansas, and Oklahoma and to map the distribution of a freshwater mussel assemblage for the U.S. Department of the Interior, Bureau of Land Management Rapid Ecoregional Assessment...
Tarentola annularis (white-spotted wall gecko)
Samuel R Fisher, Chelsea E Martin, Robert N. Fisher
2021, Herpetological Review (52) 85
USA: CALIFORNIA: Orange Co.: San Juan Capistrano (33.51°N,117.66°W; WGS 84). 25 August 2020. Samuel Fisher, Chelsea Martin, Robert Fisher. Verified by Gregory B. Pauly. Natural History Museum of Los Angeles County (LACM 191974). New county record. One juvenile (33 mm SVL) was collected, and another juvenile was seen 40 m...
