Effects of depletion sampling by standard three-pass pulsed DC electrofishing on blood chemistry parameters of fishes from Appalachian streams
Christine L. Densmore, Frank M. Panek
2013, North American Journal of Fisheries Management (33) 298-306
Adverse effects on fishes captured by electrofishing techniques have long been recognized, although the extent of associated physical injury and behavioral alterations are highly variable and dependent on a number of factors. We examined the effects of three-pass pulsed DC (PDC) electrofishing on two salmonid species (Rainbow Trout Oncorhynchus mykiss...
Landscape factors and hydrology influence mercury concentrations in wading birds breeding in the Florida Everglades, USA
Garth Herring, Collin A. Eagles-Smith, Joshua T. Ackerman, Dale E. Gawlik, James M. Beerens
2013, Science of the Total Environment (458-460) 637-646
The hydrology of wetland ecosystems is a key driver of both mercury (Hg) methylation and waterbird foraging ecology, and hence may play a fundamental role in waterbird exposure and risk to Hg contamination. However, few studies have investigated hydrological factors that influence waterbird Hg exposure. We examined how several landscape-level...
Mining Review
National Minerals Information Center
2013, Mining Engineering (65) 22-31
In 2012, the estimated value of mineral production increased in the United States for the third consecutive year. Production and prices increased for most industrial mineral commodities mined in the United States. While production for most metals remained relatively unchanged, with the notable exception of gold, the prices for most...
Endozoochory of seeds and invertebrates by migratory waterbirds in Oklahoma, USA
Andy J. Green, Dagmar Frisch, Thomas C. Michot, Larry K. Allain, Wylie C. Barrow
2013, Limnetica (32) 39-46
Given their abundance and migratory behavior, waterbirds have major potential for dispersing plants and invertebrates within North America, yet their role as vectors remains poorly understood. We investigated the numbers and types of invertebrates and seeds within freshly collected faecal samples (n = 22) of migratory dabbling ducks and shorebirds...
Exploration Review
D.R. Wilburn, K.A. Stanley
2013, Mining Engineering (65) 32-52
This summary of international mineral exploration activities for 2012 draws upon information from industry sources, published literature and U.S. Geological Survey (USGS) specialists. The summary provides data on exploration budgets by region and mineral commodity, identifies significant mineral discoveries and areas of mineral exploration, discusses government programs affecting the mineral...
Using structured decision making to manage disease risk for Montana wildlife
Michael S. Mitchell, Justin A. Gude, Neil J. Anderson, Jennifer M. Ramsey, Michael J. Thompson, Mark G. Sullivan, Victoria L. Edwards, Claire N. Gower, Jean Fitts Cochrane, Elise R. Irwin, Terry Walshe
2013, Wildlife Society Bulletin (37) 107-114
We used structured decision-making to develop a 2-part framework to assist managers in the proactive management of disease outbreaks in Montana, USA. The first part of the framework is a model to estimate the probability of disease outbreak given field observations available to managers. The second part of the framework...
Lake whitefish diet, condition, and energy density in Lake Champlain and the lower four Great Lakes following dreissenid invasions
Seth J. Herbst, J. Ellen Marsden, Brian F. Lantry
2013, Transactions of the American Fisheries Society (142) 388-398
Lake Whitefish Coregonus clupeaformis support some of the most valuable commercial freshwater fisheries in North America. Recent growth and condition decreases in Lake Whitefish populations in the Great Lakes have been attributed to the invasion of the dreissenid mussels, zebra mussels Dreissena polymorpha and quagga mussels D. bugensis, and the...
Linking phenology and biomass productivity in South Dakota mixed-grass prairie
Matthew Rigge, Alexander Smart, Bruce Wylie, Tagir Gilmanov, Patricia Johnson
2013, Rangeland Ecology and Management (66) 579-587
Assessing the health of rangeland ecosystems based solely on annual biomass production does not fully describe plant community condition; the phenology of production can provide inferences on species composition, successional stage, and grazing impacts. We evaluate the productivity and phenology of western South Dakota mixed-grass prairie using 2000 to 2008...
A model for evaluating effects of climate, water availability, and water management on wetland impoundments--a case study on Bowdoin, Long Lake, and Sand Lake National Wildlife Refuges
Brian A. Tangen, Robert A. Gleason, John F. Stamm
2013, Scientific Investigations Report 2013-5114
Many wetland impoundments managed by the U.S. Fish and Wildlife Service (USFWS) National Wildlife Refuge System throughout the northern Great Plains rely on rivers as a primary water source. A large number of these impoundments currently are being stressed from changes in water supplies and quality, and these problems are...
Chesapeake Bay hypoxic volume forecasts and results: June 18, 2013
Donald Scavia, Mary Anne Evans
2013, Report
The 2013 Forecast - Given the average Jan-May 2013 total nitrogen load of 162,028 kg/day, this summer’s hypoxia volume forecast is 6.1 km3, slightly smaller than average size for the period of record and almost the same as 2012....
Kinetics of homogeneous and surface-catalyzed mercury(II) reduction by iron(II)
Aria Amirbahman, Douglas B. Kent, Gary P. Curtis, Mark C. Marvin-DiPasquale
2013, Environmental Science & Technology (47) 7204-7213
Production of elemental mercury, Hg(0), via Hg(II) reduction is an important pathway that should be considered when studying Hg fate in environment. We conducted a kinetic study of abiotic homogeneous and surface-catalyzed Hg(0) production by Fe(II) under dark anoxic conditions. Hg(0) production rate, from initial 50 pM Hg(II) concentration, increased...
Hydraulic and water-quality data collection for the investigation of Great Lakes tributaries for Asian carp spawning and egg-transport suitability
Elizabeth A. Murphy, P. Ryan Jackson
2013, Scientific Investigations Report 2013-5106
If the invasive Asian carps (bighead carp Hypophthalmichthys nobilis and silver carp Hypophthalmichthys molitrix) migrate to the Great Lakes, in spite of the efforts to stop their advancement, these species will require the fast-flowing water of the Great Lakes tributaries for spawning and recruitment in order to establish a growing population. Two Lake...
Methods and results of peak-flow frequency analyses for streamgages in and bordering Minnesota, through water year 2011
Erich W. Kessler, David L. Lorenz, Christopher A. Sanocki
2013, Scientific Investigations Report 2013-5110
Peak-flow frequency analyses were completed for 409 streamgages in and bordering Minnesota having at least 10 systematic peak flows through water year 2011. Selected annual exceedance probabilities were determined by fitting a log-Pearson type III probability distribution to the recorded annual peak flows. A detailed explanation of the methods that...
Diet of the eastern mudminnow (Umbra pygmaea DeKay) from two geographically distinct populations within the North American native range
Frank M. Panek, Judith S. Weis
2013, Northeastern Naturalist (20) 37-48
Umbra pygmaea (Eastern Mudminnow) is a freshwater species common in Atlantic slope coastal lowlands from southern New York to northern Florida and is typical of slow-moving, mud-bottomed, and highly vegetated streams, swamps, and small ponds. We examined its seasonal food habits at the Great Swamp National Wildlife Refuge (NWR), NJ...
Kittiwake diets and chick production signal a 2008 regime shift in the Northeast Pacific
Scott A. Hatch
2013, Marine Ecology Progress Series (477) 271-284
I examined ~2700 food samples collected from adult and nestling black-legged kittiwakes Rissa tridactyla from 1978 through 2011 on Middleton Island in the Gulf of Alaska. The kittiwake diet was composed chiefly of fish, but invertebrates were taken in appreciable quantities in April and May. Upon spring arrival at the...
Development of MODFLOW-USG: an un-structured grid version of MODFLOW
Sorab Panday
2013, International Association of Hydrogeologists Newsletter (42) 4-5
MODFLOW was revolutionary when it was first unveiled by the USGS in 1988, and since then it has been the most widely used groundwater flow modeling program in the world. MODFLOW’s simulation capabilities have evolved substantially since its initial release and it has been an inspiration for more comprehensive analysis...
Dynamic deformation of Seguam Island, Alaska, 1992--2008, from multi-interferogram InSAR processing
Chang-Wook Lee, Zhong Lu, Joong-Sun Won, Hyung-Sup Jung, Daniel Dzurisin
2013, Journal of Volcanology and Geothermal Research (260) 43-51
We generated a time-series of ERS-1/2 and ENVISAT interferometric synthetic aperture radar (InSAR) images to study ground surface deformation at Seguam Island from 1992 to 2008. We used the small baseline subset (SBAS) technique to reduce artifacts associated with baseline uncertainties and atmospheric delay anomalies, and processed images from two...
Multi-temporal maps of the Montaguto earth flow in southern Italy from 1954 to 2010
Luigi Guerriero, Paola Revellino, Jeffrey A. Coe, Mariano Focareta, Gerardo Grelle, Vincenzo Albanese, Angelo Corazza, Francesco M. Guadagno
2013, Journal of Maps (9) 135-145
Historical movement of the Montaguto earth flow in southern Italy has periodically destroyed residences and farmland, and damaged the Italian National Road SS90 and the Benevento-Foggia National Railway. This paper provides maps from an investigation into the evolution of the Montaguto earth flow from 1954 to 2010. We used aerial...
Baseline groundwater quality from 20 domestic wells in Sullivan County, Pennsylvania, 2012
Ronald A. Sloto
2013, Scientific Investigations Report 2013-5085
Water samples were collected from 20 domestic wells during August and September 2012 and analyzed for 47 constituents and properties, including nutrients, major ions, metals and trace elements, radioactivity, and dissolved gases, including methane and radon-222. This study, done in cooperation with the Pennsylvania Department of Conservation and Natural Resources, Bureau...
Landscape consequences of natural gas extraction in Somerset and Westmoreland Counties, Pennsylvania,2004--2010
L.E. Milheim, E.T. Slonecker, C.M. Roig-Silva, A.R. Malizia
2013, Open-File Report 2013-1126
Increased demands for cleaner burning energy, coupled with the relatively recent technological advances in accessing unconventional hydrocarbon-rich geologic formations, have led to an intense effort to find and extract natural gas from various underground sources around the country. One of these sources, the Marcellus Shale, located in the Allegheny Plateau,...
Historical rock falls in Yosemite National Park, California (1857-2011)
Greg M. Stock, Brian D. Collins, David J. Santaniello, Valerie L. Zimmer, Gerald F. Wieczorek, James B. Snyder
2013, Data Series 746
Inventories of rock falls and other types of landslides are valuable tools for improving understanding of these events. For example, detailed information on rock falls is critical for identifying mechanisms that trigger rock falls, for quantifying the susceptibility of different cliffs to rock falls, and for developing magnitude-frequency relations. Further,...
Disinfection of three wading boot surfaces infested with New Zealand mudsnails
Kelly A. Stockton, Christine M. Moffitt
2013, North American Journal of Fisheries Management (33) 529-538
New Zealand mudsnails Potamopyrgus antipodarum (NZMS) have been introduced into many continents and are easily transported live while attached to wading and other field gear. We quantified the relative attachment by different life stages of NZMS to felt, neoprene, and rubber-soled boots exposed to two densities of NZMS in experimental...
Geologic map of the east half of the Lime Hills 1:250,000-scale quadrangle, Alaska
Bruce M. Gamble, Bruce L. Reed, Donald H. Richter, Marvin A. Lanphere
2013, Open-File Report 2013-1090
This map is compiled from geologic mapping conducted between 1985 and 1992 by the U.S. Geological Survey as part of the Alaska Mineral Resource Assessment Program. That mapping built upon previous USGS work (1963–1988) unraveling the magmatic history of the Alaska–Aleutian Range batholith. Quaternary unit contacts depicted on this map...
Comparison between two statistically based methods, and two physically based models developed to compute daily mean streamflow at ungaged locations in the Cedar River Basin, Iowa
S. Mike Linhart, Jon F. Nania, Daniel E. Christiansen, Kasey J. Hutchinson, Curtis L. Sanders Jr., Stacey A. Archfield
2013, Scientific Investigations Report 2013-5111
A variety of individuals from water resource managers to recreational users need streamflow information for planning and decisionmaking at locations where there are no streamgages. To address this problem, two statistically based methods, the Flow Duration Curve Transfer method and the Flow Anywhere method, were developed for statewide application and...
Vegetation map of the watersheds between Kawela and Kamalō Gulches, Island of Molokaʻi, Hawaiʻi
James D. Jacobi, Stephen Ambagis
2013, Scientific Investigations Report 2013-5093
In this document we describe the methods and results of a project to produce a large-scale map of the dominant plant communities for an area of 5,118.5 hectares encompassing the Kawela and Kamalō watersheds on the island of Molokaʻi, Hawaiʻi, using digital image analysis of multi-spectral satellite imagery. Besides providing...
