Controls on spatial and temporal variations of brine discharge to the Dolores River in the Paradox Valley, Colorado, 2016–18
M. Alisa Mast, Neil Terry
2019, Scientific Investigations Report 2019-5058
The Paradox Valley in southwestern Colorado is a collapsed anticline formed by movement of the salt-rich Paradox Formation at the core of the anticline. The salinity of the Dolores River, a tributary of the Colorado River, increases substantially as it crosses the valley because of discharge of brine-rich groundwater derived...
Influenza A virus detected in native bivalves in waterfowl habitat of the Delmarva Peninsula, USA
Christine L. Densmore, Deborah D. Iwanowicz, Shawn M. McLaughlin, Christopher Ottinger, Jason E. Spires, Luke R. Iwanowicz
2019, Microorganisms (7)
We evaluated the prevalence of influenza A virus (IAV) in different species of bivalves inhabiting natural water bodies in waterfowl habitat along the Delmarva Peninsula and Chesapeake Bay in eastern Maryland. Bivalve tissue from clam and mussel specimens (Macoma balthica, Macoma phenax, Mulinia sp., Rangia cuneata, Mya arenaria, Guekensia demissa,...
Monitoring drought impact on annual forage production in semi-arid grasslands: A case study of Nebraska sandhills
Marketa Podebradska, Bruce Wylie, Michael J. Hayes, Brian D. Wardlow, Deborah J. Bathke, Norman B. Bliss, Devendra Dahal
2019, Remote Sensing (11)
Land management practices and disturbances (e.g. overgrazing, fire) have substantial effects on grassland forage production. When using satellite remote sensing to monitor climate impacts, such as drought stress on annual forage production, minimizing land management practices and disturbance effects sends a clear climate signal to the productivity...
Isolation by a hydroelectric dam induces minimal impacts on genetic diversity and population structure in six fish species
Jenna Ruzich, Keith Turnquist, Nathan Nye, David Rowe, Wesley Larson
2019, Conservation Genetics (20) 1421-1436
Reduced connectivity created by artificial barriers can influence the genetic integrity of isolated subpopulations by reducing local population sizes and altering patterns of gene flow. We investigated the genetic impacts of one such barrier, the Prairie du Sac dam, Wisconsin, USA, using microsatellite data from six...
Vulnerability of subsistence systems due to social and environmental change: A case study in the Yukon-Kuskokwim Delta, Alaska
Nicole M. Herman-Mercer, Melinda Laituri, Maggie Massey, Elli Matkin, Ryan C. Toohey, Kelly Elder, Paul F. Schuster, Edda A. Mutter
2019, Arctic (72) 258-272
Arctic Indigenous communities have been classified as highly vulnerable to climate change impacts. The remoteness of Arctic communities, their dependence upon local species and habitats, and the historical marginalization of Indigenous peoples, enhances this characterization of vulnerability. However, vulnerability is a result of diverse historical, social, economic, political,...
Discovery of the yellow-bellied marmot (Marmota flaviventris) in the Jemez Mountains, New Mexico: Examining competing hypotheses for range extension
Jennifer K. Frey, Erik A. Beever, Charles D Hathcock, Robert Parmenter, Marie L Westover
2019, Western North American Naturalist (79) 285-294
The yellow-bellied marmot (Marmota flaviventris) reaches the southern edge of its geographic range in New Mexico, where it is known from the San Juan and Sangre de Cristo Mountains. We provide a synopsis of the geographic range of M. flaviventris in New Mexico and report 5...
The landscape of soil carbon data: Emerging questions, synergies and databases
Avni Malhotra, Katherine Todd-Brown, Luke Nave, Niels Batjes, James Holmquist, Alison Hoyt, Colleen Iversen, Robert B. Jackson, Kate Lathja, Corey R. Lawrence, Olga Vinduśková, William Wieder, Matt Williams, Gustaf Hugelias, Jennifer Harden
2019, Progress in Physical Geography: Earth and Environment (43) 707-719
Soil carbon has been measured for over a century in applications ranging from understanding biogeochemical processes in natural ecosystems to quantifying the productivity and health of managed systems. Consolidating diverse soil carbon datasets is increasingly important to maximize their value, particularly with growing anthropogenic and climate change pressures. In this...
Environmental gradients influence differences in leaf functional traits between native and non-native plants
Jonathan J Henn, Stephanie G. Yelenik, Ellen Ingman Damschen
2019, Oecologia (191) 397-409
Determining the characteristics of non-native plants that can successfully establish and spread is central to pressing questions in invasion ecology. Evidence suggests that some non-native species establish and spread in new environments because they possess characteristics (functional traits) that allow them to either successfully compete with...
Interferometric synthetic aperture radar study of recent eruptive activity at Shrub mud volcano, Alaska
Yufen Niu, Daniel Dzurisin, Zhong Lu
2019, Journal of Volcanology and Geothermal Research (387)
Shrub mud volcano is one of three large mud volcanoes that comprise the Klawasi Group in the Copper River Basin of southcentral Alaska. Except for minor discharges in the mid-1950s when the group was first described, Shrub was dormant prior to its reactivation in summer 1996. From 1997 to 1999,...
Effects of water temperature, turbidity, and rainbow trout on humpback chub population dynamics
Charles B. Yackulic, Julia B. Hull
Phil Frederick, editor(s)
2019, Fact Sheet 2019-3049
Humpback chub (Gila cypha Miller 1946), found only in the Colorado River Basin, was one of the first species to be given full protection under the Endangered Species Act of 1973. Habitat alterations, such as changes in flow and water temperature caused by dams, and the introduction of nonnative fish...
The effects of management practices on grassland birds—Willet (Tringa semipalmata inornata)
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Barry D. Parkin, Jason P. Thiele, Betty R. Euliss
2019, Professional Paper 1842-I
Keys to Willet (Tringa semipalmata inornata) management include providing large expanses of native grasslands and wetland complexes. Wetland complexes should contain a diversity of wetland sizes and classes, such as ephemeral, temporary, seasonal, semipermanent, and permanent wetlands, as well as intermittent streams. Willets use wetlands of various salinities. Willets require...
The effects of management practices on grassland birds—Wilson’s Phalarope (Phalaropus tricolor)
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Christopher M. Goldade, Amy L. Zimmerman, Betty R. Euliss
2019, Professional Paper 1842-J
The key to Wilson’s Phalarope (Phalaropus tricolor) management is providing wetland complexes containing suitable wetland characteristics (that is, open water, emergent vegetation, and open shoreline) and upland habitat (native grassland or tame hayland) throughout the breeding season. Wilson’s Phalaropes have been reported to use habitats with 15–32 centimeters (cm) average...
The effects of management practices on grassland birds—American Bittern (Botaurus lentiginosus)
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Amy L. Zimmerman, Travis L. Wooten, Betty R. Euliss
2019, Professional Paper 1842-K
Keys to American Bittern (Botaurus lentiginosus) management include protecting wetlands and adjacent uplands and maintaining idle upland habitat. American Bitterns have been reported to use habitats with 30–203 centimeters (cm) average vegetation height, 44–99 cm visual obstruction reading, and less than 91 cm water depth. ...
The effects of management practices on grassland birds—Upland Sandpiper (Bartramia longicauda)
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Meghan F. Dinkins, Christopher M. Goldade, Barry D. Parkin, Betty R. Euliss
2019, Professional Paper 1842-F
The key to Upland Sandpiper (Bartramia longicauda) management is providing grasslands of various heights with few shrubs. In general, Upland Sandpipers forage within short vegetation and nest and rear broods within taller vegetation. Upland Sandpipers have been reported to use habitats with less than (<) 93 centimeters (cm) vegetation height,...
The effects of management practices on grassland birds—Marbled Godwit (Limosa fedoa)
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Melvin P. Nenneman, Betty R. Euliss
2019, Professional Paper 1842-H
Keys to Marbled Godwit (Limosa fedoa) management include providing large expanses of short, sparsely to moderately vegetated landscapes that include native grasslands and wetland complexes. Optimal wetland complexes should contain a diversity of wetland classes and sizes, such as ephemeral, temporary, seasonal, semipermanent, permanent, and alkali wetlands, as well as...
The effects of management practices on grassland birds—Mountain Plover (Charadrius montanus)
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Melvin P. Nenneman, Travis L. Wooten, Betty R. Euliss
2019, Professional Paper 1842-E
The key to Mountain Plover (Charadrius montanus) management is maintaining sparsely vegetated grasslands. Grasslands can be made suitable for breeding Mountain Plovers by preserving large prairie dog (Cynomys species) towns, conducting prescribed burns, or implementing heavy grazing in some situations. Mountain Plovers have been reported to use habitats with 2–38...
The effects of management practices on grassland birds—Long-billed Curlew (Numenius americanus)
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Paul A. Rabie, Betty R. Euliss
2019, Professional Paper 1842-G
Keys to Long-billed Curlew (Numenius americanus) management include providing large, open, level to gently rolling grasslands with short vegetation, and tailoring grazing regimes to local conditions. Long-billed Curlews have been reported to use habitats with 3–75 centimeters (cm) average vegetation height, less than or equal to 27 cm visual obstruction...
Laboratory assessment of alternative stream velocity measurement methods
Stephen A. Hundt, Kyle W. Blasch
2019, PLoS ONE (14)
Understanding streamflow in montane watersheds on regional scales is often incomplete due to a lack of data for small-order streams that link precipitation and snowmelt processes to main stem discharge. This data deficiency is attributed to the prohibitive cost of conventional streamflow measurement methods and the remote location of many...
Gravity surveys using a mobile atom interferometer
Xuejian Wu, Zachary Pagel, Bola S. Malek, Timothy H. Nguyen, Fei Zi, Daniel S. Scheirer, Holger Muller
2019, Science Advances (5)
Mobile gravimetry is important in metrology, navigation, geodesy, and geophysics. Atomic gravimeters could be among the most accurate mobile gravimeters, but are currently constrained by being complex and fragile. Here, we demonstrate a mobile atomic gravimeter, measuring tidal gravity variations in the laboratory as well as surveying gravity in the...
Effects of the neonicotinoid insecticide clothianidin on southern leopard frog (Rana sphenocephala) tadpole behavior
J. N. Holtswarth, F. E. Rowland, Holly J. Puglis, Michelle L. Hladik, Elisabeth B. Webb
2019, Bulletin of Environmental Contamination and Toxicology (103) 717-722
Neonicotinoid insecticides are highly water soluble with relatively long half-lives, which allows them to move into and persist in aquatic ecosystems. However, little is known of the impacts of neonicotinoids on non-target vertebrates, especially at sublethal concentrations. We evaluated the effects of the neonicotinoid clothianidin on...
Activity patterns of cave-dwelling bat species during pre-hibernation swarming and post-hibernation emergence in the central Appalachians
Michael S. Muthersbaugh, W. Mark Ford, Alexander Silvis, Karen E. Powers
2019, Diversity (11)
In North America, bat research efforts largely have focused on summer maternity colonies and winter hibernacula, leaving the immediate pre- and post-hibernation ecology for many species unstudied. Understanding these patterns and processes is critical for addressing potential additive impacts to White-nose Syndrome (WNS)-affected bats, as autumn is...
Arsenic variability and groundwater age in three water supply wells in southeast New Hampshire
Joseph Levitt, James R. Degnan, Sarah Flanagan, Bryant Jurgens
2019, Geoscience Frontiers (10) 1669-1683
Three wells in New Hampshire were sampled bimonthly over three years to evaluate the temporal variability of arsenic concentrations and groundwater age. All samples had measurable concentrations of arsenic throughout the entire sampling period and concentrations in individual wells varied, on average, by more than 7 µg/L. High arsenic concentrations...
Effects of distribution, behavior, and climate on mule deer survival
Elizabeth M. Schuyler, Katie Dugger, Dewaine H. Jackson
2019, Journal of Wildlife Management (83) 89-99
Mule deer (Odocoileus hemionus hemionus) populations in North America are a valuable economic wildlife resource, with the managed harvest of this species reflecting societal values and recreational opportunities in many parts of the western United States. Managing mule deer populations while allowing for harvest requires an...
Numerical model simulations of potential changes in water levels and capture of natural discharge from groundwater withdrawals in Snake Valley and adjacent areas, Utah and Nevada
Melissa D. Masbruch
2019, Open-File Report 2019-1083
The National Park Service (NPS) and the Bureau of Land Management (BLM) are concerned about cumulative effects of groundwater development on groundwater-dependent resources managed by, and other groundwater resources of interest to, these agencies in Snake Valley and adjacent areas, Utah and Nevada. Of particular concern to the NPS and...
Crustal magmatism and anisotropy beneath the Arabian Shield - A cautionary tale
Paul A. Bedrosian, Jared R. Peacock, Maher K. Al-Dhahry, Adel Shareef, D. W. Feucht, Hani M. Zahran
2019, Journal of Geophysical Research B: Solid Earth (124) 10153-10179
Volcanism in Saudi Arabia includes a historic eruption close to the holy city of Al Madinah. As part of a volcanic hazard assessment of this area, magnetotelluric (MT) data were collected to investigate the structural setting, the distribution of melt within the crust, and the mantle source of volcanism. Interpretation...
