Managing harvest and habitat as integrated components
Erik E. Osnas, Michael C. Runge, Brady J. Mattsson, Jane E. Austin, G. S. Boomer, R. G. Clark, P. Devers, J. M. Eadie, E. V. Lonsdorf, Brian G. Tavernia
2014, Wildfowl (Special Issue No. 4) 305-328
In 2007, several important initiatives in the North American waterfowl management community called for an integrated approach to habitat and harvest management. The essence of the call for integration is that harvest and habitat management affect the same resources, yet exist as separate endeavours with very different regulatory contexts. A...
U.S. Geological Survey carbon sequestration: Geologic research and assessments
Peter D. Warwick, Mahendra K. Verma, Philip A. Freeman, M.D. Corum, Stephen H. Hickman
2014, Energy Procedia (63) 5305-5309
In 2007, the U.S. Energy Independence and Security Act authorized the U.S. Geological Survey (USGS) to conduct a national assessment of geologic storage resources for anthropogenic carbon dioxide (CO2) and to evaluate the national technically recoverable hydrocarbon resources resulting from CO2 injection and...
Biodiversity loss and infectious diseases
Kevin D. Lafferty
2014, Book chapter, Applied ecology and human dimensions in biological conservation
When conservation biologists think about infectious diseases, their thoughts are mostly negative. Infectious diseases have been associated with the extinction and endangerment of some species, though this is rare, and other factors like habitat loss and poorly regulated harvest still are the overwhelming drivers of endangerment. Parasites are pervasive and...
Trends in groundwater quality in principal aquifers of the United States, 1988-2012
Bruce D. Lindsey, Michael G. Rupert
2014, Book, 9th National Monitoring Conference
The U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Program analyzed trends in groundwater quality throughout the nation for the sampling period of 1988-2012. Trends were determined for networks (sets of wells routinely monitored by the USGS) for a subset of constituents by statistical analysis of paired water-quality measurements...
Survival of adult Red-throated Loons (Gavia stellata) may be linked to marine conditions
Joel A. Schmutz
2014, Waterbirds (37) 118-124
Large variations in the summering population size of Red-throated Loons (Gavia stellata) have occurred in recent decades in Alaska. Little information exists about annual or seasonal survival rates of adult Red-throated Loons. This study used tracking data from satellite transmitters implanted into 33 Red-throated Loons captured on breeding areas in Alaska...
Generalisation operators
Larry V. Stanislawski, Barbara P. Buttenfield, Pia Bereuter, Sandro Savino, Cynthia A. Brewer
Dirk Burghardt, Cecile Duchene, William Mackaness, editor(s)
2014, Book chapter, Abstracting geographic information in a data rich world
This chapter summarises cartographic generalisation operators used to generalise geospatial data. It includes a review of recent approaches that have been tested or implemented to generalise networks, points, or groups. Emphasis is placed on recent advances that permit additional flexibility to tailor generalisation processing in particular geographic contexts, and to...
Growth and survival of sea lampreys from metamorphosis to spawning in Lake Huron
William D. Swink, Nicholas S. Johnson
2014, Transactions of the American Fisheries Society (143) 380-386
Larval Sea Lampreys Petromyzon marinus live burrowed in stream bottoms and then metamorphose into their parasitic stage. Among larvae that metamorphose in a given year (i.e., parasitic cohort), autumn out-migrants (October–December) to the Laurentian Great Lakes can feed on fish for up to 6 months longer than spring outmigrants (March–May),...
Transport and retention of vertically migrating adult mysid and decapod shrimp in the tidal front on Georges Bank
R. Gregory Lough, Alfredo L. Aretxabaleta
2014, Marine Ecology Progress Series (514) 119-135
Vertical profiles of the adult epibenthic shrimp Neomysis americana and Crangon septemspinosus obtained during June 1985 were used to simulate possible rates of ascent from bottom (40 to 50 m) to near surface at night and return by day, and the consequence of these rates on their horizontal distribution. Numerical...
Consuming fire ants reduces northern bobwhite survival and weight gain
P.E. Myers, Craig R. Allen, Hannah E. Birge
2014, Journal of Agricultural and Urban Entomology (30) 49-58
Northern bobwhite quail, Colinus virginianus (L.) (Galliformes: Odontophoridae), population declines are well documented, but pinpointing the reasons for these decreases has proven elusive. Bobwhite population declines are attributed primarily to loss of habitat and land use changes. This, however, does not entirely explain population declines in areas intensively managed for...
Presence of the Corexit component dioctyl sodium sulfosuccinate in Gulf of Mexico waters after the 2010 Deepwater Horizon oil spill
James L. Gray, Leslie K. Kanagy, Edward T. Furlong, Chris J. Kanagy, Jeff W. McCoy, Andrew Mason, Gunnar Lauenstein
2014, Chemosphere (95) 124-130
Between April 22 and July 15, 2010, approximately 4.9 million barrels of oil were released into the Gulf of Mexico from the Deepwater Horizon oil well. Approximately 16% of the oil was chemically dispersed, at the surface and at 1500 m depth, using Corexit 9527 and Corexit 9500, which contain...
Microbiological reduction of Sb(V) in anoxic freshwater sediments
Ronald S. Oremland, Thomas R. Kulp, Laurence G. Miller, Franco Braiotta, Samuel M. Webb, Benjamin D Kocar, Jodi S. Blum
2014, Environmental Science & Technology (48) 218-226
Microbiological reduction of millimolar concentrations of Sb(V) to Sb(III) was observed in anoxic sediments from two freshwater settings: (1) a Sb- and As-contaminated mine site (Stibnite Mine) in central Idaho and 2) an uncontaminated suburban lake (Searsville Lake) in the San Francisco Bay Area. Rates of Sb(V) reduction in anoxic...
Inference of strata separation and gas emission paths in longwall overburden using continuous wavelet transform of well logs and geostatistical simulation
C. Ozgen Karacan, Ricardo A. Olea
2014, Journal of Applied Geophysics (105) 147-158
Prediction of potential methane emission pathways from various sources into active mine workings or sealed gobs from longwall overburden is important for controlling methane and for improving mining safety. The aim of this paper is to infer strata separation intervals and thus gas emission pathways from standard well log...
Partners in amphibian and reptile conservation 2013 annual report
Paulette M. Conrad, Linda A. Weir, Priya Nanjappa, editor(s)
2014, Annual Report 4
Partners in Amphibian and Reptile Conservation (PARC) was established in 1999 to address the widespread declines, extinctions, and range reductions of amphibians and reptiles, with a focus on conservation of taxa and habitats in North America. Amphibians and reptiles are affected by a broad range of human activities, both as...
A bootstrap estimation scheme for chemical compositional data with nondetects
Javier Palarea-Albaladejo, J.A Martin-Fernandez, Ricardo A. Olea
2014, Journal of Chemometrics (28) 585-599
The bootstrap method is commonly used to estimate the distribution of estimators and their associated uncertainty when explicit analytic expressions are not available or are difficult to obtain. It has been widely applied in environmental and geochemical studies, where the data generated often represent parts of whole, typically chemical concentrations....
Distribution of soil organic carbon in the conterminous United States
Norman B. Bliss, Sharon Waltman, Larry T. West, Anne Neale, Megan Mehaffey
Alfred E. Hartemink, Kevin M. McSweeney, editor(s)
2014, Book chapter, Soil Carbon
The U.S. Soil Survey Geographic (SSURGO) database provides detailed soil mapping for most of the conterminous United States (CONUS). These data have been used to formulate estimates of soil carbon stocks, and have been useful for environmental models, including plant productivity models, hydrologic models, and ecological models for studies of...
A simple headspace equilibration method for measuring dissolved methane
C Magen, L. L. Lapham, John W. Pohlman, Kristin N. Marshall, S. Bosman, Michael Casso, J. P. Chanton
2014, Limnology and Oceanography: Methods (12) 637-650
Dissolved methane concentrations in the ocean are close to equilibrium with the atmosphere. Because methane is only sparingly soluble in seawater, measuring it without contamination is challenging for samples collected and processed in the presence of air. Several methods for analyzing dissolved methane are described in the literature, yet none...
The role of defensible space for residential structure protection during wildfires
Alexandra D. Syphard, Teresa J. Brennan, Jon E. Keeley
2014, International Journal of Wildland Fire (23) 1165-1175
With the potential for worsening fire conditions, discussion is escalating over how to best reduce effects on urban communities. A widely supported strategy is the creation of defensible space immediately surrounding homes and other structures. Although state and local governments publish specific guidelines and requirements, there is little empirical evidence...
Habitat and food preferences of the endangered Palila (Loxioides bailleui) on Mauna Kea, Hawai'i
Steven C. Hess, Paul C. Banko, Linda J. Miller, Leona P. Laniawe
2014, Wilson Journal of Ornithology (126) 728-738
Seeds and flowers of the leguminous māmane (Sophora chrysophylla) tree are the primary food resource of the federally endangered Palila (Loxioides bailleui; Fringillidae: Drepanidinae), which is now restricted to dry subalpine woodland on Mauna Kea Volcano on the island of Hawai'i because of centuries of habitat degradation by non-native ungulates....
Temperature sensitivity of organic-matter decay in tidal marshes
Matthew L. Kirwan, Glenn R. Guntenspergen, J.A. Langley
2014, Biogeosciences (11) 4801-4808
Approximately half of marine carbon sequestration takes place in coastal wetlands, including tidal marshes, where organic matter contributes to soil elevation and ecosystem persistence in the face of sea-level rise. The long-term viability of marshes and their carbon pools depends, in part, on how the balance between productivity and decay...
Holocene and latest Pleistocene paleoseismology of the Salt Lake City segment of the Wasatch Fault Zone, Utah, at the Penrose Drive Trench Site
Christopher B. DuRoss, Michael D. Hylland, Greg N. McDonald, Anthony J. Crone, Stephen F. Personius, Ryan D. Gold, Shannon Mahan
2014, Report, Evaluating surface faulting chronologies of Graben-Bounding Faults in Salt Lake Valley, Utah: new paleoseismic data from the Salt Lake City segment of the Wasatch Fault Zone and the West Valley Fault Zone
The Salt Lake City segment (SLCS) of the Wasatch fault zone (WFZ) and the West Valley fault zone (WVFZ) compromise Holocene-active normal faults that bound a large intrabasin graben in northern Salt Lake Valley and have evidence of recurrent, large-magnitude (M ~6-7) surface-faulting earthquakes. However, at the time of this...
Southern San Andreas Fault evaluation field activity: approaches to measuring small geomorphic offsets--challenges and recommendations for active fault studies
Katherine M. Scharer, J. Barrett Salisbury, J. Ramon Arrowsmith, Thomas K. Rockwell
2014, Seismological Research Letters (85) 68-76
In southern California, where fast slip rates and sparse vegetation contribute to crisp expression of faults and microtopography, field and high‐resolution topographic data (<1 m/pixel) increasingly are used to investigate the mark left by large earthquakes on the landscape (e.g., Zielke et al., 2010; Zielke et al., 2012; Salisbury, Rockwell, et...
Transcriptome resources for the frogs Lithobates clamitans and Pseudacris regilla, emphasizing antimicrobial peptides and conserved loci for phylogenetics
Laura S. Robertson, Robert S. Cornman
2014, Molecular Ecology Resources (14) 178-183
We developed genetic resources for two North American frogs, Lithobates clamitans and Pseudacris regilla, widespread native amphibians that are potential indicator species of environmental health. For both species, mRNA from multiple tissues was sequenced using 454 technology. De novo assemblies with Mira3 resulted in 50 238 contigs (N50 = 687...
Yellowstone grizzly bear investigations—Annual report of the Interagency Grizzly Bear Study Team 2013
Frank T. van Manen, Mark A. Haroldson, Karrie West, Suzanna C. Soileau, editor(s)
2014, Report
This Annual Report summarizes results of grizzly bear (Ursus arctos) monitoring and research conducted in the Greater Yellowstone Ecosystem (GYE) by the Interagency Grizzly Bear Study Team (IGBST) during 2013. The report also contains a summary of nuisance grizzly bear management actions. ...
Ancient aqueous environments at Endeavour crater, Mars
R. E. Arvidson, S. W. Squyres, J.F. Bell III, J.G. Catalano, B. C. Clark, L.S. Crumpler, P.A. de Souza Jr., A.G. Fairén, W. H. Farrand, V.K. Fox, Ralf Gellert, A. Ghosh, M.P. Golombeck, J.P. Grotzinger, E.A. Guinness, Kenneth E. Herkenhoff, B.L. Jolliff, A.H. Knoll, R. Li, S. M. McLennan, D. W. Ming, D. W. Mittlefehldt, Johnnie N. Moore, R.V. Morris, S.L. Murchie, T. J. Parker, G. Paulsen, J.W. Rice, S. W. Ruff, M. D. Smith, M.J. Wolff
2014, Science (343)
Opportunity has investigated in detail rocks on the rim of the Noachian age Endeavour crater, where orbital spectral reflectance signatures indicate the presence of Fe+3-rich smectites. The signatures are associated with fine-grained, layered rocks containing spherules of diagenetic or impact origin. The layered rocks are overlain by breccias, and both...
Vegetation classification and mapping Vicksburg National Military Park, Mississippi
C. Lea, B. Waltermire, C. Nordman
2014, Report
No abstract available....
