Species account: Sylvilagus nuttallii (Mountain cottontail)
Erik A. Beever, Eveline A. Larrucea
2017, Book chapter, Lagomorphs: Pikas, rabbits, and hares of the world
No abstract available....
Species account: Lepus californicus (Black-tailed jackrabbit)
Erik A. Beever
2017, Book chapter, Lagomorphs: Pikas, rabbits, and hares of the world
No abstract available....
Investigation of input reduction techniques for morphodynamic modeling of complex inlets with baroclinic forcing
Guy R. Gelfenbaum, Edwin Elias, Andrew W. Stevens
2017, Conference Paper, Coastal Dynamics 2017, Proceedings
The Mouth of the Columbia River (MCR) is a complex estuary inlet system characterized by a buoyant plume created by high freshwater flows from the Columbia River into the Pacific Ocean. Data obtained during two major field campaigns have resulted in a comprehensive dataset of hydrodynamics and sediment transport under high (2013)...
The Southern Appalachian Brook Trout management conundrum: What should restoration look like in the 21st Century?
Matt A. Kulp, Shawna Mitchell, David C. Kazyak, Bernard R. Kuhajda, Jason Henegar, T. Casey Weathers, Anna George, Joshua R. Ennen, Tim King
2017, Conference Paper, Proceedings of the wild trout XII symposium
Brook Trout Salvelinus fontinalis in the southern Appalachian portion of their range have been isolated in remote headwater systems for millennia. Recent genetic investigations indicate extremely low allelic diversity, heterozygosity and effective population sizes in many streams. In populations restored using multiple source stocks, limited introgression has been observed despite...
Characterization of microsatellite loci for the Gulf Coast waterdog (Necturus beyeri) using paired-end Illumina shotgun sequencing and cross-amplification in other Necturus
Jennifer Y. Lamb, Brian R. Kreiser, Hardin Waddle, Carl P. Qualls
2017, Herpetological Review (48) 458-763
Amphibians are one of the most threatened groups of vertebrates (Stuart et al. 2004; Wake and Vredenburg 2008), and the application of molecular techniques to amphibian ecology and genetics has dramatically improved our ability to conserve species and populations (see Shaffer et al. [2015] for review). Microsatellites, tandem repeats of...
Are nest boxes ecological traps for red-footed falcons Falco vespertinius at Naurzum
Todd E. Katzner, Alexander E. Bragin, Evgeny A. Bragin
2017, Conference Paper, Biological diversity of Asian Steppe: Proceedings of the III international scientific conference
Nest box programs are frequently implemented for conservation of cavity-nesting birds, but their effectiveness is rarely evaluated in comparison to birds not using nest boxes. In the European Palearctic, Red-Footed Falcon (Falco vespertinus) populations are both of high conservation concern and are strongly associated with nest box programs in heavily...
Born of fire: In search of volcanoes in U.S. national parks, four striking examples
Laura Walkup, Thomas Casadevall, Vincent L. Santucci
2017, Earth Sciences History (36) 197-244
Geologic features, particularly volcanic features, have been protected by the National Park Service since its inception. Some volcanic areas were nationally protected even before the National Park Service was established. The first national park, Yellowstone National Park, is one of the most widely known geothermal and volcanic areas in the...
High-resolution seismic imaging of depositional characteristics at gas hydrate research sites in the Gulf of Mexico
Seth S. Haines, Timothy S. Collett, Patrick E. Hart, B. Shedd, P. Weimer, M. Frye, R. Boswell
2017, Conference Paper, 9th International conference on gas hydrates
No abstract available....
Permafrost-related processes and recent response to climatic changes
Marina Leibman, Alexandr Kizyakov, Guido Grosse, Benjamin M. Jones, M. Torre Jorgenson, Mikhail Z. Kanevskiy
2017, Book chapter, Snow, water, ice and permafrost in the Arctic (SWIPA) 2017
Permafrost-related processes have direct and indirect consequences to northern environments, but the impacts are affected by complex interactions involving positive and negative feedbacks at the surface (Jorgenson et al. 2010), climatic trends and fluctuations (Romanovsky et al. 2010; Konishchev 2011), and terrain and ground ice conditions (French and Shur 2010,...
Implications of refining vertical resolution of hydraulic conductivity in the numerical modeling of groundwater flow to surface water, NAS Whiting Field, Florida
Eric D. Swain, Bruce G. Campbell, James Landmeyer
2017, Conference Paper, Fourth international symposium on bioremediation and sustainable environmental technologies
Naval Air Station Whiting Field is located near Milton, Florida and is one of the Navy's two primary pilot training bases. Commissioned in 1943, historic operations at Whiting Field generated industrial wastes that contaminated soil and the water-table aquifer. The Environmental Protection Agency placed Whiting Field on the Superfund program’s...
The role of sand lance in the Northwest Atlantic ecosystem
Michelle Staudinger, Linda Welch, Dave Wiley
2017, Report
No abstract available....
Application of organic petrology in high maturity shale gas systems
Paul C. Hackley
2017, Book chapter, Geology: Current and future developments
Application of incident light microscopy techniques for organic petrology in high temperature thermogenic shale gas systems demonstrates that solid bitumen is the dominant organic matter. Solid bitumen is retained as a residual conversion product as oil-prone kerogen cracks to hydrocarbons or occurs from the cracking of once liquid oil. Oil-prone...
Preliminary-assessment and upgrade of a groundwater flow model of the Seacoast Bedrock Aquifer, New Hampshire
Thomas J. Mack
2017, Conference Paper, Proceedings of the MODFLOW and more 2017 conference
In 2003 and 2004, the U.S. Geological Survey investigated the availability of groundwater resources in a 160-square mile area of coastal New Hampshire (Figure 1) using a regional groundwater flow model (Mack, 2009). At that time, population growth and increasing water demand prompted concern for the sustainability of the region’s...
Yellowstone River compact commission sixty-sixth annual report 2017
John M. Kilpatrick, Patrick Tyrrell, Jan Langel
2017, Report
No abstract available....
Preliminary assessment of porphyry copper deposits in the Sierra Maestra, Cuba
Lukas Zurcher, Floyd Gray, Timothy Hayes, Greta J. Orris, Mark E. Gettings, Mark D. Cocker, Leila Gass
2017, Conference Paper, GEOCIENCIAS 2017 Proceedings volume "Memorias, Trabajos y Resumenes"
The U.S. Geological Survey’s “three-step” form of mineral-resource assessment was used to obtain a preliminary estimate of copper resources in undiscovered porphyry deposits of the Paleogene Sierra Maestra Arc. Results of this preliminary assessment suggest that a mean of 3.2 undiscovered deposits are likely present. This estimate is comparable to...
Severe Drought Impacts Female Pheasant Physiology in Southwest Nebraska
J. A. Laskowski, G. C. Bachman, Joseph J. Fontaine
2017, Prairie Naturalist (49) 57-65
In 2012, Nebraska experienced one of the worst droughts since the 1930s, accompanied by abnormally high temperatures. We studied the impacts of the 2012 summer drought on female ring-necked pheasant (Phasianus colchicus) body condition and baseline and stress-induced corticosterone concentrations (CORT). We hypothesized that drought conditions would reduce pheasant body...
Analysis of artificially matured shales with confocal laser scanning raman microscopy: Applications to organic matter characterization
Grant A. Myers, Kelsey Kehoe, Paul C. Hackley
2017, Conference Paper
Raman spectroscopy has been suggested as a method for characterizing the thermal maturity of rocks. The literature contains many empirical correlations between thermal maturity proxies, such as vitrinite reflectance (VRo) and pyrolysis-Tmax, with spectral metrics such as Raman peak-widths, peak-center positions, peak-areas and all manner of differences and ratios of...
Soil acidification and Beech Bark Disease influence the composition and structure of Sugar Maple-Beech Forests
Timothy J. Sullivan, Todd C. McDonnell, Gregory B. Lawrence, Michael R. Antidormi, Martin Dovciak, Michael R. Zarfos, Scott W. Bailey
2017, Report
No abstract available....
Occupancy and abundance of Eleutherodactylus wightmanae and E. brittoni along elevational gradients in west-central Puerto Rico
Kelen D. Monroe, Jaime A. Collazo, Krishna Pacifici, Brian J. Reich, Alberto R. Puente-Rolon, Adam J. Terando
2017, Caribbean Naturalist (40) 1-18
Populations of Eleutherodactylus species in Puerto Rico have declined in recent decades due to habitat loss and long-term climatic changes. The conservation of these habitat specialists requires an understanding of factors influencing their abundance and distribution, which at present is scant. We estimated occupancy probability and the probability of encountering ≥2 individuals of...
Spectral properties of anhydrous carbonates and nitrates
J.L. Bishop, S.J. King, M.D. Lane, B. Lafuente, A. J. Brown, T. Hiroi, Gregg A. Swayze, J.-F. Lin
2017, Conference Paper, Lunar and Planetary Science XLVIII
No abstract available....
Population expansion of Humpback chub in western Grand Canyon and hypothesized mechanisms
David R. VanHaverbeke, Dennis M. Stone, Michael J. Dodrill, Kirk L. Young, Michael J. Pillow
2017, Southwestern Naturalist (62) 285-292
Humpback chub, Gila cypha, is an endangered warm water fish endemic to the Colorado River basin of southwestern North America. In Grand Canyon National Park, cold hypolimnetic water-release temperatures from Glen Canyon Dam have largely precluded successful spawning and recruitment of humpback chub in the mainstem Colorado River. Therefore, the species...
Mislabeling of an invasive vine (Celastrus orbiculatus) as a native congener (C. scandens) in horticulture
David N. Zaya, Stacey A. Leicht-Young, Noel B. Pavlovic, Christopher S. Hetrea, Mary V. Ashley
2017, Invasive Plant Science and Management (10) 313-321
The horticultural industry is an important source of invasive ornamental plant species, which is part of the motivation for an increased emphasis on using native alternatives. We were interested in the possibility that plants marketed in the midwestern United States as the native Celastrus scandens, or American bittersweet, were actually...
Influence of lake surface area and total phosphorus on annual bluegill growth in small impoundments of central Georgia
Cecil A. Jennings, Aaron P. Sundmark
2017, Southeastern Naturalist (16) 546-566
The relationships between environmental variables and the growth rates of fishes are important and rapidly expanding topics in fisheries ecology. We used an informationtheoretic approach to evaluate the influence of lake surface area and total phosphorus on the age-specific growth rates of Lepomis macrochirus (Bluegill) in 6 small impoundments in central Georgia....
Declining occurrence and low colonization probability in freshwater mussel assemblages: A dynamic occurrence modeling approach
Tamara J. Pandolfo, Thomas J. Kwak, W. Gregory Cope, Ryan J. Heise, Robert B. Nichols, Krishna Pacifici
2017, Freshwater Mollusk Biology and Conservation (20) 13-19
Mussel monitoring data are abundant, but methods for analyzing long-term trends in these data are often uninformative or have low power to detect changes. We used a dynamic occurrence model, which accounted for imperfect species detection in surveys, to assess changes in species occurrence in a longterm data set (1986–2011)...
Long-term monitoring data provide evidence of declining species richness in a river valued for biodiversity conservation
Mary Freeman, Megan M. Hagler, Phillip M. Bumpers, Kit Wheeler, Seth J. Wenger, Byron J. Freeman
2017, Journal of Fish and Wildlife Management (8) 418-434
Free-flowing river segments provide refuges for many imperiled aquatic biota that have been extirpated elsewhere in their native ranges. These biodiversity refuges are also foci of conservation concerns because species persisting within isolated habitat fragments may be particularly vulnerable to local environmental change. We have analyzed long-term (14- and 20-y)...
