Storm-surge flooding on the Yukon-Kuskokwim Delta, Alaska
John Terenzi, Craig R. Ely, M. Torre Jorgenson
2014, Arctic (67) 360-374
Coastal regions of Alaska are regularly affected by intense storms of ocean origin, the frequency and intensity of which are expected to increase as a result of global climate change. The Yukon-Kuskokwim Delta (YKD), situated in western Alaska on the eastern edge of the Bering Sea, is one of the...
Occupancy of yellow-billed and Pacific loons: evidence for interspecific competition and habitat mediated co-occurrence
Trevor B. Haynes, Joel A. Schmutz, Mark S. Lindberg, Kenneth G. Wright, Brian D. Uher-Koch, Amanda E. Rosenberger
2014, Journal of Avian Biology (45) 296-304
Interspecific competition is an important process structuring ecological communities, however, it is difficult to observe in nature. We used an occupancy modelling approach to evaluate evidence of competition between yellow-billed (Gavia adamsii) and Pacific (G. pacifica) loons for nesting lakes on the Arctic Coastal Plain of Alaska. With multiple years...
Crisis crowdsourcing framework: designing strategic configurations of crowdsourcing for the emergency management domain
Sophia B. Liu
2014, Computer Supported Cooperative Work (23) 389-443
Crowdsourcing is not a new practice but it is a concept that has gained significant attention during recent disasters. Drawing from previous work in the crisis informatics, disaster sociology, and computer-supported cooperative work (CSCW) literature, the paper first explains recent conceptualizations of crowdsourcing and how crowdsourcing is a way of...
Size and retention of breeding territories of yellow-billed loons in Alaska and Canada
Joel A. Schmutz, Kenneth G. Wright, Christopher R. DeSorbo, Jeff Fair, David C. Evers, Brian D. Uher-Koch, Daniel M. Mulcahy
2014, Waterbirds (37) 53-63
Yellow-billed Loons (Gavia adamsii) breed in lakes in the treeless Arctic and are globally rare. Like their sister taxa, the well-documented Common Loon (G. immer) of the boreal forest, Yellow-billed Loons exhibit strong territorial behavior during the breeding season. Little is known about what size territories are required, however, or...
A stage-structured, spatially explicit migration model for Myotis bats: mortality location affects system dynamics
Richard A. Erickson, Wayne E. Thogmartin, Robin E. Russell, James E. Diffendorfer, Jennifer A. Szymanski
2014, Letters in Biomathematics (1) 157-172
Bats are ecologically and economically important species because they consume insects, transport nutrients, and pollinate flowers. Many species of bats, including those in the Myotis genus, are facing population decline and increased extinction risk. Despite these conservation concerns, few models exist for providing insight into the population dynamics of bats in a...
Historic and contemporary mercury exposure and potential risk to yellow-billed loons (Gavia adamsii) breeding in Alaska and Canada
David C. Evers, Joel A. Schmutz, Niladri Basu, Christopher R. DeSorbo, Jeff Fair, Carrie E. Gray, James D. Paruk, Marie Perkins, Kevin Regan, Brian D. Uher-Koch, Kenneth G. Wright
2014, Waterbirds (37) 147-159
The Yellow-billed Loon (Gavia adamsii) is one of the rarest breeding birds in North America. Because of the small population size and patchy distribution, any stressor to its population is of concern. To determine risks posed by environmental mercury (Hg) loads, we captured 115 Yellow-billed Loons between 2002 and 2012...
Links between N deposition and nitrate export from a high-elevation watershed in the Colorado Front Range
M. Alisa Mast, David W. Clow, Jill Baron, Gregory A. Wetherbee
2014, Environmental Science & Technology (48) 14258-14265
Long-term patterns of stream nitrate export and atmospheric N deposition were evaluated over three decades in Loch Vale, a high-elevation watershed in the Colorado Front Range. Stream nitrate concentrations increased in the early 1990s, peaked in the mid-2000s, and have since declined by over 40%, coincident with trends in nitrogen...
Use of glacier river-fed estuary channels by juvenile coho salmon: transitional or rearing habitats?
Tammy D. Hoem Neher, Amanda E. Rosenberger, Christian E. Zimmerman, Coowe M. Walker, Steven J. Baird
2014, Environmental Biology of Fishes (97) 839-850
Estuaries are among the most productive ecosystems in the world and provide important rearing environments for a variety of fish species. Though generally considered important transitional habitats for smolting salmon, little is known about the role that estuaries serve for rearing and the environmental conditions important for salmon. We illustrate...
Factors influencing immediate post-release survival of spectacled eiders following surgical implantation of transmitters with percutaneous antennae
Matthew G. Sexson, Daniel M. Mulcahy, Maria Spriggs, Gwen E. Myers
2014, Journal of Wildlife Management (78) 550-560
Surgically implanted transmitters are a common method for tracking animal movements. Immediately following surgical implantation, animals pass through a critical recovery phase when behaviors may deviate from normal and the likelihood of individual survival may be reduced. Therefore, data collected during this period may be censored to minimize bias introduced...
Temporal patterns in the foraging behavior of sea otters in Alaska
George G. Esslinger, James L. Bodkin, André R. Breton, Jennifer M. Burns, Daniel H. Monson
2014, Journal of Wildlife Management (78) 689-700
Activity time budgets in apex predators have been proposed as indicators of population status relative to resource limitation or carrying capacity. We used archival time-depth recorders implanted in 15 adult female and 4 male sea otters (Enhydra lutris) from the northernmost population of the species, Prince William Sound, Alaska, USA,...
Methods for estimating drought streamflow probabilities for Virginia streams
Samuel H. Austin
2014, Scientific Investigations Report 2014-5145
Maximum likelihood logistic regression model equations used to estimate drought flow probabilities for Virginia streams are presented for 259 hydrologic basins in Virginia. Winter streamflows were used to estimate the likelihood of streamflows during the subsequent drought-prone summer months. The maximum likelihood logistic regression models identify probable streamflows from 5...
Localized rejuvenation of a crystal mush recorded in zircon temporal and compositional variation at the Lassen Volcanic Center, northern California
Erik W. Klemetti, Michael A. Clynne
2014, PLoS ONE (9)
Zircon ages and trace element compositions from recent silicic eruptions in the Lassen Volcanic Center (LVC) allow for an evaluation of the timing and conditions of rejuvenation (reheating and mobilization of crystals) within the LVC magmatic system. The LVC is the southernmost active Cascade volcano and, prior to the 1980...
Global land cover mapping: a review and uncertainty analysis
Russell G. Congalton, Jianyu Gu, Kamini Yadav, Prasad S. Thenkabail, Mutlu Ozdogan
2014, Remote Sensing (6) 12070-12093
Given the advances in remotely sensed imagery and associated technologies, several global land cover maps have been produced in recent times including IGBP DISCover, UMD Land Cover, Global Land Cover 2000 and GlobCover 2009. However, the utility of these maps for specific applications has often been hampered due to considerable...
Estimation of potential evapotranspiration from extraterrestrial radiation, air temperature and humidity to assess future climate change effects on the vegetation of the Northern Great Plains, USA
David A. King, Dominique M. Bachelet, Amy J. Symstad, Ken Ferschweiler, Michael Hobbins
2014, Ecological Modelling (297) 86-97
The potential evapotranspiration (PET) that would occur with unlimited plant access to water is a central driver of simulated plant growth in many ecological models. PET is influenced by solar and longwave radiation, temperature, wind speed, and humidity, but it is often modeled as a function of temperature alone. This...
Gravity survey and interpretation of Fort Irwin and vicinity, Mojave Desert, California
Robert C. Jachens, Victoria E. Langenheim
David C. Buesch, editor(s)
2014, Open-File Report 2013-1024-H
In support of a hydrogeologic study of the groundwater resources on Fort Irwin, we have combined new gravity data with preexisting measurements to produce an isostatic residual gravity map, which we then separated into two components reflecting (1) the density distribution in the pre-Cenozoic basement complex and (2) the distribution...
Introduction to the geologic and geophysical studies of Fort Irwin, California
David C. Buesch
David C. Buesch, editor(s)
2014, Open-File Report 2013-1024-A
Geologic and geophysical investigations in the vicinity of Fort Irwin National Training Center, California, have been completed in support of groundwater investigations, and are presented in eight chapters of this report. A generalized surficial geologic map along with field and borehole investigations conducted during 2010–11 provide a lithostratigraphic and structural...
Generalized surficial geologic map of the Fort Irwin Area, San Bernardino County, California
David M. Miller, Christopher M. Menges, David J. Lidke
David C. Buesch, editor(s)
2014, Open-File Report 2013-1024-B
The geology and landscape of the Fort Irwin area, typical of many parts of the Mojave Desert, consist of rugged mountains separated by broad alluviated valleys that form the main coarse-resolution features of the geologic map. Crystalline and sedimentary rocks, Mesozoic and older in age, form most of the mountains...
Specification for the U.S. Geological Survey Historical Topographic Map Collection
Gregory J. Allord, Jennifer L. Walter, Kristin A. Fishburn, Gale A. Shea
2014, Techniques and Methods 11-B6
This document provides the detailed requirements for producing, archiving, and disseminating a comprehensive digital collection of topographic maps for the U.S. Geological Survey (USGS) Historical Topographic Map Collection (HTMC). The HTMC is a digital archive of about 190,000 printed topographic maps published by the USGS from the inception of the...
Sediment data collected in 2013 from the northern Chandeleur Islands, Louisiana
Noreen A. Buster, Kyle W. Kelso, Julie Bernier, James G. Flocks, Jennifer L. Miselis, Nancy T. DeWitt
2014, Data Series 894
As part of the Barrier Island Evolution Research project, scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center collected sediment samples from the northern Chandeleur Islands in July 2013. The overall objective of this project, which integrates geophysical (bathymetric, seismic, and topographic) and sedimentologic data, is...
Aeromagnetic data, processing, and maps of Fort Irwin and vicinity, California
Victoria E. Langenheim, Robert C. Jachens
David C. Buesch, editor(s)
2014, Open-File Report 2013-1024-I
Aeromagnetic data help provide the underpinnings of a hydrogeologic framework for Fort Irwin by locating inferred structural features or grain that influence groundwater flow. Magnetization boundaries defined by horizontal-gradient analyses coincide locally with Cenozoic faults and can be used to extend these faults beneath cover. These boundaries also highlight the...
Documentation for the U.S. Geological Survey Public-Supply Database (PSDB): A database of permitted public-supply wells, surface-water intakes, and systems in the United States
Curtis V. Price, Molly A. Maupin
2014, Open-File Report 2014-1212
The U.S. Geological Survey (USGS) has developed a database containing information about wells, surface-water intakes, and distribution systems that are part of public water systems across the United States, its territories, and possessions. Programs of the USGS such as the National Water Census, the National Water Use Information Program, and...
Water resources of Vermilion Parish, Louisiana
Lawrence B. Prakken, Vincent E. White
2014, Fact Sheet 2014-3080
Information concerning the availability, use, and quality of water in Vermilion Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. Information on the availability,...
Estimates of groundwater recharge rates and sources in the East Mountain area, Eastern Bernalillo County, New Mexico, 2005-12
Steven E. Rice, Dianna M. Crilley
2014, Scientific Investigations Report 2014-5181
The U.S. Geological Survey, in cooperation with the Bernalillo County Public Works Division, has conducted a monitoring program in the East Mountain area of eastern Bernalillo County, New Mexico, since 2000 to better define the hydrogeologic characteristics of the East Mountain area and to provide scientific information that will assist...
Water resources of Jefferson Davis Parish, Louisiana
Vincent E. White, Lawrence B. Prakken
2014, Fact Sheet 2014-3074
Information concerning the availability, use, and quality of water in Jefferson Davis Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. Information on the...
Evaluation of a mass-balance approach to determine consumptive water use in northeastern Illinois
P.C. Mills, James J. Duncker, Thomas M. Over, Marian Domanski, Marian Domanski, Frank L. Engel
2014, Scientific Investigations Report 2014-5176
A principal component of evaluating and managing water use is consumptive use. This is the portion of water withdrawn for a particular use, such as residential, which is evaporated, transpired, incorporated into products or crops, consumed by humans or livestock, or otherwise removed from the immediate water environment. The amount...
