Incorporating detection probability into northern Great Plains pronghorn population estimates
Christopher N. Jacques, Jonathan A. Jenks, Troy W. Grovenburg, Robert W. Klaver, Christopher S. DePerno
2014, Journal of Wildlife Management (78) 164-174
Pronghorn (Antilocapra americana) abundances commonly are estimated using fixed-wing surveys, but these estimates are likely to be negatively biased because of violations of key assumptions underpinning line-transect methodology. Reducing bias and improving precision of abundance estimates through use of detection probability and mark-resight models may allow for more responsive pronghorn...
Tsunami-generated sediment wave channels at Lake Tahoe, California-Nevada, USA
James G. Moore, Richard A. Schweickert, Christopher A. Kitts
2014, Geosphere (10) 757-768
A gigantic ∼12 km3 landslide detached from the west wall of Lake Tahoe (California-Nevada, USA), and slid 15 km east across the lake. The splash, or tsunami, from this landslide eroded Tioga-age moraines dated as 21 ka. Lake-bottom short piston cores recovered sediment as old as 12 ka that did not...
Age and isotopic systematics of Cretaceous borehole and surface samples from the greater Los Angeles Basin region: Implications for the types of crust that might underlie Los Angeles and their distribution along late Cenozoic fault systems
Wayne R. Premo, Douglas M. Morton, Ronald W. Kistler
2014, Book chapter, Peninsular ranges Batholith, Baja California and southern California: Geological Society of America Memoir 211
Nine U-Pb zircon ages were determined on plutonic rocks sampled from surface outcrops and rock chips of drill core from boreholes within the greater Los Angeles Basin region. In addition, lead-strontium-neodymium (Pb-Sr-Nd) whole-rock isotopic data were obtained for eight of these samples. These results help to characterize the crystalline basement...
Major and trace element geochemistry and background concentrations for soils in Connecticut
Craig J. Brown, Margaret A. Thomas
2014, Northeastern Geoscience (32) 1-37
Soil samples were collected throughout Connecticut (CT) to determine the relationship of soil chemistry with the underlying geology and to better understand background concentrations of major and trace elements in soils. Soil samples were collected (1) from the upper 5 cm of surficial soil at 100 sites, (2) from the...
Age estimation of burbot using pectoral fin rays, brachiostegal rays, and otoliths
Zachary B. Klein, Marc M. Terrazas, Michael C. Quist
2014, Intermountain Journal of Sciences (20) 57-67
Throughout much of its native distribution, burbot (Lota lota) is a species of conservation concern. Understanding dynamic rate functions is critical for the effective management of sensitive burbot populations, which necessitates accurate and precise age estimates. Managing sensitive burbot populations requires an accurate and precise non-lethal alternative. In an effort...
Utilizing multi-sensor fire detections to map fires in the United States
Stephen M. Howard, Joshua J. Picotte, Michael Coan
2014, Conference Paper, The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XL-1,
In 2006, the Monitoring Trends in Burn Severity (MTBS) project began a cooperative effort between the US Forest Service (USFS) and the U.S.Geological Survey (USGS) to map and assess burn severity all large fires that have occurred in the United States since 1984. Using Landsat imagery, MTBS is mandated to...
Observations from borehole dilution logging experiments in fractured crystalline rock under variable hydraulic conditions
Philip T. Harte, J. Alton Anderson, John Williams
2014, Conference Paper, Symposium on the application of geophysics to engineering and environmental problems 2014
Identifying hydraulically active fractures in low permeability, crystalline-bedrock aquifers requires a variety of geophysical and hydrogeophysical borehole tools and approaches. One such approach is Single Borehole Dilution Tests (SBDT), which in some low flow cases have been shown to provide greater resolution of borehole flow than other logging procedures, such...
Understanding the value of imperfect science from national estimates of bird mortality from window collisions
Craig S. Machtans, Wayne E. Thogmartin
2014, Condor (116) 3-7
The publication of a U.S. estimate of bird–window collisions by Loss et al. is an example of the somewhat contentious approach of using extrapolations to obtain large-scale estimates from small-scale studies. We review the approach by Loss et al. and other authors who have published papers on human-induced avian mortality...
Quantifying spatial scaling patterns and their local and regional correlates in headwater streams: Implications for resilience
Emma Gothe, Leonard Sandin, Craig R. Allen, David G. Angeler
2014, Ecology and Society (19)
The distribution of functional traits within and across spatiotemporal scales has been used to quantify and infer the relative resilience across ecosystems. We use explicit spatial modeling to evaluate within- and cross-scale redundancy in headwater streams, an ecosystem type with a hierarchical and dendritic network structure. We assessed the cross-scale...
Fluorescence and dissolved organic matter: A chemist’s perspective
George R. Aiken
Paula G. Coble, Jamie Lead, Andy Baker, Darren M. Reynolds, Robert G. M. Spencer, editor(s)
2014, Book chapter, Aquatic organic matter fluorescence
No abstract available. ...
Chromic and iron oxides as fecal markers to identify individual whooping cranes
Megan E. Brown, Robert Doyle, Jane N. Chandler, Glenn H. Olsen, John B. French, David E Wildt, Sarah J. Converse, Carol L Keefer, Nucharin Songsasen
David Aborn, Richard P. Urbanek, editor(s)
2014, Conference Paper, Proceedings of the twelfth North American crane workshop
The whooping crane (Grus americana) is listed as endangered under the IUCN Red List, the United States Endangered Species Act, and the Canadian Species at Risk Act (BirdLife International 2012, CWS and USFWS 2007). A major focus of recovery efforts for this endangered species is reintroduction to establish new populations...
Finding that academic position
David W. Willis, Daniel A. Isermann
William W. Taylor, Abigail J. Lynch, Nancy J. Leonard, editor(s)
2014, Book chapter, Future of fisheries: Perspectives for emerging professionals
No abstract available....
A design for a sustained assessment of climate forcings and feedbacks on land use land cover change
Thomas Loveland, Rezaul Mahmood
2014, Bulletin of the American Meteorological Society (95) 1563-1572
Land use and land cover change (LULCC) significantly influences the climate system. Hence, to prepare the nation for future climate change and variability, a sustained assessment of LULCC and its climatic impacts needs to be undertaken. To address this objective, not only do we need to determine contemporary trends in...
Preliminary testing of flow-ecology hypotheses developed for the GCP LCC region
Shannon K. Brewer, Mary Davis
2014, Cooperator Science Series FWS/CSS-108-2014
The Ecological Limits of Hydrological Alteration (ELOHA) framework calls for the development of flow-ecology hypotheses to support protection of the flow regime from ecologically harmful alteration due to human activities. As part of a larger instream flow project for the Gulf Coast Prairie Landscape Conservation Cooperative (GCP LCC), regional flow-ecology...
Advantages of active love wave techniques in geophysical characterizations of seismographic station - Case studies in California and the central and eastern United States
Antony Martin, Alan K. Yong, Larry A. Salomone
2014, Conference Paper, Tenth U.S. National Conference on Earthquake Engineering: Frontiers of Earthquake Engineering
Active-source Love waves, recorded by the multi-channel analysis of surface wave (MASLW) technique, were recently analyzed in two site characterization projects. Between 2010 and 2012, the 2009 American Recovery and Reinvestment Act (ARRA) funded GEOVision to conduct geophysical investigations at 191 seismographic stations in California and the Central Eastern U.S....
Centralized mission planning and scheduling system for the Landsat Data Continuity Mission
Alicia Kavelaars, Assaf M. Barnoy, Shawna Gregory, Gonzalo Garcia, Cesar Talon, Gregory Greer, Jason Williams, Vicki Dulski
2014, Conference Paper, SpaceOps 2014 Conference
Satellites in Low Earth Orbit provide missions with closer range for studying aspects such as geography and topography, but often require efficient utilization of space and ground assets. Optimizing schedules for these satellites amounts to a complex planning puzzle since it requires operators to face issues such as discontinuous ground...
SHRIMP-RG U-Pb ages of provenance and metamorphism from detrital zircon populations and Pb-Sr-Nd signatures of prebatholithic metasedimentary rocks at Searl Ridge, northern Peninsular Ranges batholith, southern California: Implications for their age, origin, and tectonic setting
Wayne R. Premo, Douglas M. Morton
2014, Book chapter, Peninsular ranges Batholith, Baja California and southern California: Geological Society of America Memoir 211
Twenty-four samples were collected from prebatholithic metasedimentary rocks along Searl Ridge, the north rim of the Diamond Valley Reservoir, Domenigoni Valley, centrally located in the northern Peninsular Ranges of southern California. These rocks exhibit progressive metamorphism from west to east across fundamental structural discontinuities now referred to as a “transition...
Effects of iron on optical properties of dissolved organic matter
Brett Poulin, Joseph N. Ryan, George R. Aiken
2014, Environmental Science & Technology (48) 10098-10106
Iron is a source of interference in the spectroscopic analysis of dissolved organic matter (DOM); however, its effects on commonly employed ultraviolet and visible (UV–vis) light adsorption and fluorescence measurements are poorly defined. Here, we describe the effects of iron(II) and iron(III) on the UV–vis absorption and fluorescence of solutions...
Linking successful careers to successful fisheries
Charles F. Rabeni, Shannon K. Brewer
2014, Book chapter, Future of fisheries: Perspectives for emerging professionals
No abstract available....
Mammoth Mountain and its mafic periphery—A late Quaternary volcanic field in eastern California
Wes Hildreth, Judith Fierstein, Duane E. Champion, Andrew T. Calvert
2014, Geosphere (10) 1315-1365
The trachydacite complex of Mammoth Mountain and an array of contemporaneous mafic volcanoes in its periphery together form a discrete late Pleistocene magmatic system that is thermally and compositionally independent of the adjacent subalkaline Long Valley system (California, USA). The Mammoth system first erupted ca. 230 ka, last erupted ca....
Latest Quaternary paleoseismology and evidence of distributed dextral shear along the Mohawk Valley fault zone, northern Walker Lane, California
Ryan D. Gold, Richard W. Briggs, Stephen Personius, Anthony J. Crone, Shannon A. Mahan, Stephen Angster
2014, Journal of Geophysical Research B: Solid Earth (119) 5014-5032
The dextral-slip Mohawk Valley fault zone (MVFZ) strikes northwestward along the eastern margin of the Sierra Nevada in the northern Walker Lane. Geodetic block modeling indicates that the MVFZ may accommodate ~3 mm/yr of regional dextral strain, implying that it is the highest slip-rate strike-slip fault in the region; however,...
2011 Summary: Coastal wetland restoration research
Kurt P. Kowalski, Michael J. Wiley, Douglas A. Wilcox, Martha L. Carlson Mazur, Alex Czayka, Andrea Dominguez, Susan Doty, Mike Eggleston, Sean Green, Amanda Sweetman
2014, Report
The Great Lakes Restoration Initiative (GLRI) projects currently taking place in Great Lakes coastal wetlands provide a unique opportunity to study ecosystem response to management actions as practitioners strive to improve wetland function and increase ecosystem services. Through a partnership between the U.S. Geological Survey – Great Lakes Science Center...
Correlations in distribution and concentration of calcium, copper and iron with zinc in isolated extracellular deposits associated with age-related macular degeneration
Jane M Flinn, Peter Kakalec, Ryan Tappero, Blair F. Jones, Imre Lengyel
2014, Metallomics (6) 1223-1228
Zinc (Zn) is abundantly enriched in sub-retinal pigment epithelial (RPE) deposits, the hallmarks of age-related macular degeneration (AMD), and is thought to play a role in the formation of these deposits. However, it is not known whether Zn is the only metal relevant for sub-RPE deposit formation. Because of their...
Ebullitive methane emissions from oxygenated wetland streams
John T. Crawford, Emily H. Stanley, Seth A. Spawn, Jacques C. Finlay, Robert G. Striegl
2014, Global Change Biology (20) 3408-3422
Stream and river carbon dioxide emissions are an important component of the global carbon cycle. Methane emissions from streams could also contribute to regional or global greenhouse gas cycling, but there are relatively few data regarding stream and river methane emissions. Furthermore, the available data do not typically include the...
ARkStorm@Tahoe: Stakeholder perspectives on vulnerabilities and preparedness for an extreme storm event in the greater Lake Tahoe, Reno, and Carson City region
Christine M. Albano, Dale A. Cox, Michael D. Dettinger, Kevin Shaller, Toby L. Welborn, Maureen McCarthy
2014, Report
Atmospheric rivers (ARs) are strongly linked to extreme winter precipitation events in the Western U.S., accounting for 80 percent of extreme floods in the Sierra Nevada and surrounding lowlands. In 2010, the U.S. Geological Survey developed the ARkStorm extreme storm scenario for California to quantify risks from extreme winter storms...
