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...
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...
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...
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)...
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....
Spatial ecology and movement of reintroduced Canada lynx
Frances E. Buderman, Mevin Hooten, Jacob S. Ivan, Tanya Shenk
2017, Ecography (41) 126-139
Understanding movement behavior and identifying areas of landscape connectivity is critical for the conservation of many species. However, collecting fine‐scale movement data can be prohibitively time consuming and costly, especially for rare or endangered species, whereas existing data sets may provide the best available information on animal movement. Contemporary movement...
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)...
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...
Population genetic structure and gene flow of Adélie penguins (Pygoscelis adeliae) breeding throughout the western Antarctic Peninsula
Kristen B. Gorman, Sandra L. Talbot, Sarah A. Sonsthagen, George K. Sage, Megan C. Gravley, Tony D. Williams, William R. Fraser
2017, Antarctic Science (29) 499-510
Adélie penguins (Pygoscelis adeliae) are responding to ocean–climate variability throughout the marine ecosystem of the western Antarctic Peninsula (WAP) where some breeding colonies have declined by 80%. Nuclear and mitochondrial DNA (mtDNA) markers were used to understand historical population genetic structure and gene flow given relatively recent and continuing reductions...
Groundwater-flow budget for the lower Apalachicola-Chattahoochee-Flint River Basin in southwestern Georgia and parts of Florida and Alabama, 2008–12
L. Elliott Jones, Jaime A. Painter, Jacob H. LaFontaine, Nicasio Sepulveda, Dorothy F. Sifuentes
2017, Scientific Investigations Report 2017-5141
As part of the National Water Census program in the Apalachicola-Chattahoochee-Flint (ACF) River Basin, the U.S. Geological Survey evaluated the groundwater budget of the lower ACF, with particular emphasis on recharge, characterizing the spatial and temporal relation between surface water and groundwater, and groundwater pumping. To evaluate the hydrologic budget...
Simulations of hydrologic response in the Apalachicola-Chattahoochee-Flint River Basin, Southeastern United States
Jacob H. LaFontaine, L. Elliott Jones, Jaime A. Painter
2017, Scientific Investigations Report 2017-5133
A suite of hydrologic models has been developed for the Apalachicola-Chattahoochee-Flint River Basin (ACFB) as part of the National Water Census, a U.S. Geological Survey research program that focuses on developing new water accounting tools and assessing water availability and use at the regional and national scales. Seven hydrologic models...
Baseline assessment of groundwater quality in Pike County, Pennsylvania, 2015
Lisa A. Senior, Charles A. Cravotta III
2017, Scientific Investigations Report 2017-5110
The Devonian-age Marcellus Shale and the Ordovician-age Utica Shale, which have the potential for natural gas development, underlie Pike County and neighboring counties in northeastern Pennsylvania. In 2015, the U.S. Geological Survey, in cooperation with the Pike County Conservation District, conducted a study that expanded on a previous more limited...
Geochemical modeling for mine site characterization and remediation
D. Kirk Nordstrom, Andrew Nicholson, editor(s)
2017, Book
Geochemical Modeling for Mine Site Characterization and Remediation is the fourth of six volumes in the Management Technologies for Metal Mining Infl uenced Water series about technologies for management of metal mine and metallurgical process drainage.This handbook describes the important components of hydrogeochemical modeling for mine environments, primarily those mines where...
Could changes in the agricultural landscape of northeastern China have influenced the long-distance transmission of highly pathogenic avian influenza H5Nx viruses?
Marius Gilbert, Diann J. Prosser, Geli Zhang, Jean Artois, Madhur S. Dhingra, Michael J. Tildesley, Scott H. Newman, Fusheng Guo, Peter Black, Filip Claes, Wantanee Kalpradvidh, YeunKyung Shin, Wooseog Jeong, John Y. Takekawa, Hansoo Lee, Xiangming Xiao
2017, Frontiers in Veterinary Science
In the last few years, several reassortant subtypes of highly pathogenic avian influenza viruses (HPAI H5Nx) have emerged in East Asia. These new viruses, mostly of subtype H5N1, H5N2, H5N6, and H5N8 belonging to clade 2.3.4.4, have been found in several Asian countries and have caused outbreaks in poultry in...
Streambed scour evaluations and conditions at selected bridge sites in Alaska, 2013–15
Robin A. Beebee, Karenth L. Dworsky, Schyler J. Knopp
2017, Scientific Investigations Report 2017-5149
Streambed scour potential was evaluated at 52 river- and stream-spanning bridges in Alaska that lack a quantitative scour analysis or have unknown foundation details. All sites were evaluated for stream stability and long-term scour potential. Contraction scour and abutment scour were calculated for 52 bridges, and pier scour was calculated...
Streamflow distribution maps for the Cannon River drainage basin, southeast Minnesota, and the St. Louis River drainage basin, northeast Minnesota
Erik A. Smith, Christopher A. Sanocki, David L. Lorenz, Katrin E. Jacobsen
2017, Scientific Investigations Map 3390
Streamflow distribution maps for the Cannon River and St. Louis River drainage basins were developed by the U.S. Geological Survey, in cooperation with the Legislative-Citizen Commission on Minnesota Resources, to illustrate relative and cumulative streamflow distributions. The Cannon River was selected to provide baseline data to assess the effects of...
Migration ecology and stopover population size of Red Knots Calidris canutus rufa at Mingan Archipelago after exiting the breeding grounds
James E. Lyons, Allan J. Baker, Patricia M. Gonzalez, Yves Aubry, Christophe Buidin, Yann Rochepault
2017, Wader Study (124) 197-205
Populations of migratory birds present unique conservation challenges given the often vast distances separating critical resources throughout the annual cycle. Migration areas close to the breeding grounds represent a link between two key stages of the annual cycle, and understanding migration ecology as birds exit the breeding grounds may be...
Climate change refugia and habitat connectivity promote species persistence
Toni Lyn Morelli, Sean P. Maher, Marisa C. W. Lim, Christina Kastely, Lindsey M. Eastman, Lorraine E. Flint, Alan L. Flint, Steven R. Beissinger, Craig Moritz
2017, Climate Change Responses (4)
BackgroundClimate change refugia, areas buffered from climate change relative to their surroundings, are of increasing interest as natural resource managers seek to prioritize climate adaptation actions. However, evidence that refugia buffer the effects of anthropogenic climate change is largely missing.MethodsFocusing on the climate-sensitive Belding’s ground squirrel...
The 2014 eruptions of Pavlof Volcano, Alaska
Christopher F. Waythomas, Matthew M. Haney, Kristi L. Wallace, Cheryl E. Cameron, David J. Schneider
2017, Scientific Investigations Report 2017-5129
Pavlof Volcano is one of the most frequently active volcanoes in the Aleutian Island arc, having erupted more than 40 times since observations were first recorded in the early 1800s . The volcano is located on the Alaska Peninsula (lat 55.4173° N, long 161.8937° W), near Izembek National Wildlife Refuge....
Development of simulated groundwater-contributing areas to selected streams, ponds, coastal water bodies, and production wells in the Plymouth-Carver region and Cape Cod, Massachusetts
Carl S. Carlson, John P. Masterson, Donald A. Walter, Jeffrey R. Barbaro
2017, Data Series 1074
IntroductionThe U.S. Geological Survey (USGS), in support of the Massachusetts Estuaries Project (MEP), delineated groundwater-contributing areas to various hydrologic receptors including ponds, streams, and coastal water bodies throughout southeastern Massachusetts, including portions of the Plymouth-Carver aquifer system and all of Cape Cod. These contributing areas were delineated over a 6-year...
P- and S-wave velocity models incorporating the Cascadia subduction zone for 3D earthquake ground motion simulations, Version 1.6—Update for Open-File Report 2007–1348
William J. Stephenson, Nadine G. Reitman, Stephen J. Angster
2017, Open-File Report 2017-1152
In support of earthquake hazard studies and ground motion simulations in the Pacific Northwest, three-dimensional P- and S-wave velocity (VP and VS, respectively) models incorporating the Cascadia subduction zone were previously developed for the region encompassed from about 40.2°N. to 50°N. latitude, and from about 122°W. to 129°W. longitude. This...
An open repository of earthquake-triggered ground-failure inventories
Robert G. Schmitt, Hakan Tanyas, M. Anna Nowicki Jessee, Jing Zhu, Katherine M. Biegel, Kate E. Allstadt, Randall W. Jibson, Eric M. Thompson, Cees J. van Westen, Hiroshi P. Sato, David J. Wald, Jonathan W. Godt, Tolga Gorum, Chong Xu, Ellen Rathje, Keith L. Knudsen
2017, Data Series 1064
Earthquake-triggered ground failure, such as landsliding and liquefaction, can contribute significantly to losses, but our current ability to accurately include them in earthquake-hazard analyses is limited. The development of robust and widely applicable models requires access to numerous inventories of ground failures triggered by earthquakes that span a broad range...
Community distance sampling models allowing for imperfect detection and temporary emigration
Yuichi Yamaura, J. Andrew Royle
2017, Ecosphere (8) 1-15
Recent developments of community abundance models (CAMs) enable us to analyze communities subject to imperfect detection. However, existing CAMs assume spatial closure, that is, that individuals are always present in the sampling plots, which is often violated in field surveys. Violation of this assumption, such as in the presence of...
Visualization of groundwater withdrawals
Richard B. Winston, Daniel J. Goode
2017, Open-File Report 2017-1137
Generating an informative display of groundwater withdrawals can sometimes be difficult because the symbols for closely spaced wells can overlap. An alternative method for displaying groundwater withdrawals is to generate a “footprint” of the withdrawals. WellFootprint version 1.0 implements the Footprint algorithm with two optional variations that can speed up...
Cobalt
John F. Slack, Bryn E. Kimball, Kim B. Shedd
Klaus J. Schulz, DeYoung Jr., Robert R. Seal, II, Dwight Bradley, editor(s)
2017, Professional Paper 1802-F
Cobalt is a silvery gray metal that has diverse uses based on certain key properties, including ferromagnetism, hardness and wear-resistance when alloyed with other metals, low thermal and electrical conductivity, high melting point, multiple valences, and production of intense blue colors when combined with silica. Cobalt is used mostly in...
