Ecology of juvenile hawksbills (Eretmochelys imbricata) at Buck Island Reef National Monument, US Virgin Islands
Kristen M. Hart, Autumn R. Sartain-Iverson, Zandy Hillis-Starr, Brendalee Phillips, Philippe A. Mayor, Kimberly Roberson, Roy A. Pemberton Jr., Jason B. Allen, Ian Lundgren, Susanna Musick
2013, Marine Biology (160) 2567-2580
Surveys of juvenile hawksbills around Buck Island Reef National Monument, US Virgin Islands from 1994 to 1999 revealed distributional patterns and resulted in a total of 75 individual hawksbill captures from all years; turtles ranged from 23.2 to 77.7 cm curved carapace length (CCL; mean 42.1 ± 12.3 cm SD). Juveniles concentrated where Zoanthid...
Diel variation in summer habitat use, feeding periodicity, and diet of subyearling Atlantic salmon in the Salmon River Basin, New York
James H. Johnson
2013, Journal of Great Lakes Research (39) 493-498
The habitat use, diet composition, and feeding periodicity of subyearling Atlantic salmon (Salmo salar) was examined during both day and night periods during summer in tributaries of Lake Ontario. The amount of cover used was the major habitat variable that differed between day and night periods in both streams. At...
Sediment source analysis in the Linganore Creek watershed, Maryland, USA, using the sediment fingerprinting approach: 2008 to 2010
Allen C. Gellis, Gregory B. Noe
2013, Journal of Soils and Sediments (13) 1735-1753
Purpose: Fine-grained sediment is an important pollutant in streams and estuaries, including the Chesapeake Bay in the USA. The objective of this study was to determine the sources of fine-grained sediment using the sediment fingerprinting approach in the Linganore Creek watershed, a tributary to the Chesapeake Bay. Materials and methods: The sediment fingerprinting approach was used in...
Laboratory evaluation of the Level TROLL 100 manufactured by In-Situ Inc.: results of pressure and temperature tests
Mark V. Carnley, Janice M. Fulford, Myron H. Brooks
2013, Open-File Report 2013-1173
The Level TROLL 100 manufactured by In-Situ Inc. was evaluated by the U.S. Geological Survey (USGS) Hydrologic Instrumentation Facility (HIF) for conformance to the manufacturer’s accuracy specifications for measuring pressure throughout the device’s operating temperature range. The Level TROLL 100 is a submersible, sealed, water-level sensing device with an operating...
Parasites of Bloater Coregonus hoyi (Salmonidae) from Lake Michigan, U.S.A
Charles P. Madenjian, Patrick M. Muzzall
2013, Comparative Parasitology (80) 164-170
In total, 158 bloaters Coregonus hoyi collected in September and October 2011 from 4 Lake Michigan, U.S.A., ports were examined for parasites. The ports included Waukegan (WK), Illinois; Port Washington (PW) and Sturgeon Bay (SB), Wisconsin; and Saugatuck (SG), Michigan. Parasites found in bloaters by port were cestodes Cyathocephalus truncatus...
Simulating stream transport of nutrients in the eastern United States, 2002, using a spatially-referenced regression model and 1:100,000-scale hydrography
Anne B. Hoos, Richard B. Moore, Ana Maria Garcia, Gregory B. Noe, Silvia E. Terziotti, Craig M. Johnston, Robin L. Dennis
2013, Scientific Investigations Report 2013-5102
Existing Spatially Referenced Regression on Watershed attributes (SPARROW) nutrient models for the northeastern and southeastern regions of the United States were recalibrated to achieve a hydrographically consistent model with which to assess nutrient sources and stream transport and investigate specific management questions about the effects of wetlands and atmospheric deposition...
Reevaluation of a walleye (Sander vitreus) bioenergetics model
Charles P. Madenjian, Chunfang Wang
2013, Fish Physiology and Biochemistry (39) 749-754
Walleye (Sander vitreus) is an important sport fish throughout much of North America, and walleye populations support valuable commercial fisheries in certain lakes as well. Using a corrected algorithm for balancing the energy budget, we reevaluated the performance of the Wisconsin bioenergetics model for walleye in the laboratory. Walleyes were...
Enhancements to the Mississippi Embayment Regional Aquifer Study (MERAS) groundwater-flow model and simulations of sustainable water-level scenarios
Brian R. Clark, Drew A. Westerman, D. Todd Fugitt
2013, Scientific Investigations Report 2013-5161
Arkansas continues to be one of the largest users of groundwater in the Nation. As such, long-term planning and management are essential to ensure continued availability of groundwater and surface water for years to come. The Mississippi Embayment Regional Aquifer Study (MERAS) model was developed previously as a tool to...
Use of multi-node wells in the Groundwater-Management Process of MODFLOW-2005 (GWM-2005)
David P. Ahlfeld, Paul M. Barlow
2013, Techniques and Methods 6-A47
Many groundwater wells are open to multiple aquifers or to multiple intervals within a single aquifer. These types of wells can be represented in numerical simulations of groundwater flow by use of the Multi-Node Well (MNW) Packages developed for the U.S. Geological Survey’s MODFLOW model. However, previous versions of the...
Distribution and abundance of freshwater polychaetes, Manayunkia speciosa (Polychaeta), in the Great Lakes with a 70-year case history for western Lake Erie
Don W. Schloesser
2013, Journal of Great Lakes Research (39) 308-316
Manayunkia speciosa has been a taxonomic curiosity for 150 years with little interest until 1977 when it was identified as an intermediate host of a fish parasite (Ceratomyxa shasta) responsible for fish mortalities (e.g., chinook salmon). Manayunkia was first reported in the Great Lakes in 1929. Since its discovery, the...
Water-quality and related aquatic biological characterization of Fish Creek, Teton County, Wyoming, 2007-2011
Cheryl A. Eddy-Miller, Jerrod D. Wheeler, David A. Peterson, Daniel J. Leemon
2013, Fact Sheet 2013-3036
Fish Creek, in western Wyoming near the town of Wilson, is a key feature in the area because it is used for irrigation, fishing, and other recreation, and adds scenic value to properties it runs through. Public concern about nuisance growths of aquatic plants in Fish Creek has been increasing...
Characterization of water quality and biological communities, Fish Creek, Teton County, Wyoming, 2007-2011
Cheryl A. Eddy-Miller, David A. Peterson, Jerrod D. Wheeler, C. Scott Edmiston, Michelle L. Taylor, Daniel J. Leemon
2013, Scientific Investigations Report 2013-5117
Fish Creek, an approximately 25-kilometer-long tributary to Snake River, is located in Teton County in western Wyoming near the town of Wilson. Fish Creek is an important water body because it is used for irrigation, fishing, and recreation and adds scenic value to the Jackson Hole properties it runs through....
Plant responses, climate pivot points, and trade-offs in water-limited ecosystems
Seth M. Munson
2013, Ecosphere (4)
Plant species in dryland ecosystems are limited by water availability and may be vulnerable to increases in aridity. Methods are needed to monitor and assess the rate of change in plant abundance and composition in relation to climate, understand the potential for degradation in dryland ecosystems, and forecast future changes...
Estimation of sediment inflows to Lake Tuscaloosa, Alabama, 2009-11
K.G. Lee
2013, Scientific Investigations Report 2013-5152
The U.S. Geological Survey, in cooperation with the City of Tuscaloosa, evaluated the concentrations, loads, and yields of suspended sediment in the tributaries to Lake Tuscaloosa in west-central Alabama, from October 1, 2008, to January 31, 2012. The collection and analysis of these data will facilitate the comparison with historical...
A hybrid double-observer sightability model for aerial surveys
Paul C. Griffin, Bruce C. Lubow, Kurt J. Jenkins, David J. Vales, Barbara J. Moeller, Mason Reid, Patricia J. Happe, Scott M. Mccorquodale, Michelle J. Tirhi, Jim P. Schaberi, Katherine Beirne
2013, Journal of Wildlife Management (77) 1532-1544
Raw counts from aerial surveys make no correction for undetected animals and provide no estimate of precision with which to judge the utility of the counts. Sightability modeling and double-observer (DO) modeling are 2 commonly used approaches to account for detection bias and to estimate precision in aerial surveys. We...
Geospatial compilation of historical water-level altitudes in the Chicot and Evangeline aquifers 1977-2013 and Jasper aquifer 2000-13 in the Gulf Coast aquifer system, Houston-Galveston Region, Texas
Michaela R. Johnson, Robert H.H. Ellis
2013, Data Series 793
The U.S. Geological Survey (USGS) in cooperation with the Harris-Galveston Subsidence District, City of Houston, Fort Bend Subsidence District, Lone Star Groundwater Conservation District, and Brazoria County Groundwater Conservation District has produced a series of annual reports depicting groundwater-level altitudes in the Chicot, Evangeline, and Jasper aquifers of the Gulf...
Evaluating changes to reservoir rule curves using historical water-level data
Ethan Mower, Leandro E. Miranda
2013, International Journal of River Basin Management (11) 323-328
Flood control reservoirs are typically managed through rule curves (i.e. target water levels) which control the storage and release timing of flood waters. Changes to rule curves are often contemplated and requested by various user groups and management agencies with no information available about the actual flood risk of such...
Chemistry and age of groundwater in bedrock aquifers of the Piceance and Yellow Creek watersheds, Rio Blanco County, Colorado, 2010-12
P.B. McMahon, J.C. Thomas, A.G. Hunt
2013, Scientific Investigations Report 2013-5132
Fourteen monitoring wells completed in the Uinta and Green River Formations in the Piceance Creek and Yellow Creek watersheds in Rio Blanco County, Colorado, were sampled for chemical, isotopic, and groundwater-age tracers to provide information on the overall groundwater quality, the occurrence and distribution of chemicals that could be related...
Chemistry and age of groundwater in the Piceance structural basin, Rio Blanco county, Colorado, 2010-12
Peter B. McMahon, Judith C. Thomas, Andrew G. Hunt
2013, Fact Sheet 2013-3047
Fourteen monitoring wells were sampled by the U.S. Geological Survey, in cooperation with the Bureau of Land Management, to better understand the chemistry and age of groundwater in the Piceance structural basin in Rio Blanco County, Colorado, and how they may relate to the development of underlying natural-gas reservoirs. Natural...
Is exposure to cyanobacteria an environmental risk factor for amyotrophic lateral sclerosis and other neurodegenerative diseases?
Walter G. Bradley, Amy R. Borenstein, Lorene M. Nelson, Geoffrey A. Codd, Barry H. Rosen, Elijah W. Stommel, Paul Alan Cox
2013, Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration (14) 325-333
There is a broad scientific consensus that amyotrophic lateral sclerosis (ALS) is caused by gene-environment interactions. Mutations in genes underlying familial ALS (fALS) have been discovered in only 5–10% of the total population of ALS patients. Relatively little attention has been paid to environmental and lifestyle factors that may trigger...
Diel horizontal migration in streams: juvenile fish exploit spatial heterogeneity in thermal and trophic resources
Jonathan B. Armstrong, Daniel E. Schindler, Casey P. Ruff, Gabriel T. Brooks, Kale E. Bentley, Christian E. Torgersen
2013, Ecology (94) 2066-2075
Vertical heterogeneity in the physical characteristics of lakes and oceans is ecologically salient and exploited by a wide range of taxa through diel vertical migration to enhance their growth and survival. Whether analogous behaviors exploit horizontal habitat heterogeneity in streams is largely unknown. We investigated fish movement behavior at daily...
Identification of unrecognized tundra fire events on the north slope of Alaska
Benjamin M. Jones, Amy L. Breen, Benjamin V. Gaglioti, Daniel H. Mann, Adrian V. Rocha, Guido Grosse, Christopher D. Arp, Michael L. Kunz, Donald A. Walker
2013, Journal of Geophysical Research: Biogeosciences (118) 1334-1344
Characteristics of the natural fire regime are poorly resolved in the Arctic, even though fire may play an important role cycling carbon stored in tundra vegetation and soils to the atmosphere. In the course of studying vegetation and permafrost-terrain characteristics along a chronosequence of tundra burn sites from AD 1977,...
Response of cackling geese (Branta hutchinsii taverneri to spatial and temporal variation in production of crowberries on the Alaska Peninsula
Jerry W. Hupp, David E. Safine, Ryan M. Nielson
2013, Polar Biology (36) 1243-1255
Arctic geese often feed on berries during premigratory fattening. We hypothesized that during autumn staging on the Alaska Peninsula, the distribution of Taverne's cackling geese (Branta hutchinsii taverneri) would be correlated with spatial variation in crowberry (Empetrum nigrum) abundance. We also predicted that daily rates of fat increase among cackling...
Habitat quality and recruitment success of cui-ui in the Truckee River downstream of Marble Bluff Dam, Pyramid Lake, Nevada
G. Gary Scoppettone, Peter H. Rissler, J. Antonio Salgado, Beverly Harry
2013, Open-File Report 2013-1247
We compared cui-ui (Chasmistes cujus) recruitment from two reaches of the Truckee River with histories of severe erosional downcutting caused by a decline in Pyramid Lake surface elevation. In 1975, Marble Bluff Dam (MBD) was constructed 5 kilometers upstream of the extant mouth of the Truckee River to stabilize the...
Ranking contributing areas of salt and selenium in the Lower Gunnison River Basin, Colorado, using multiple linear regression models
Joshua I. Linard
2013, Scientific Investigations Report 2013-5075
Mitigating the effects of salt and selenium on water quality in the Grand Valley and lower Gunnison River Basin in western Colorado is a major concern for land managers. Previous modeling indicated means to improve the models by including more detailed geospatial data and a more rigorous method for developing...
