Reliability of fish size estimates obtained from multibeam imaging sonar
Joseph E. Hightower, Kevin J. Magowan, Lori M. Brown, Dewayne A. Fox
2013, Journal of Fish and Wildlife Management (4) 86-96
Multibeam imaging sonars have considerable potential for use in fisheries surveys because the video-like images are easy to interpret, and they contain information about fish size, shape, and swimming behavior, as well as characteristics of occupied habitats. We examined images obtained using a dual-frequency identification sonar (DIDSON) multibeam sonar for...
Deep-ocean mineral deposits as a source of critical metals for high- and green-technology applications: Comparison with land-based deposits
James R. Hein, Kira Mizell, Andrea Koschinsky, Tracey Conrad
2013, Ore Geology Reviews (51) 1-14
Strategies for rapid global earthquake impact estimation: the Prompt Assessment of Global Earthquakes for Response (PAGER) system
Kishor Jaiswal, D.J. Wald
2013, Book chapter, Handbook of seismic risk analysis and management of civil infrastructure systems
This chapter summarizes the state-of-the-art for rapid earthquake impact estimation. It details the needs and challenges associated with quick estimation of earthquake losses following global earthquakes, and provides a brief literature review of various approaches that have been used in the past. With this background, the chapter introduces the operational...
Deer density and disease prevalence influence transmission of Chronic Wasting Disease in White-tailed Deer
Michael D. Samuel, Bryan J. Richards, Daniel J. Storm, Robert E. Rolley, Paul Shelton, Nicholas S. Keuler, Timothy R. Van Deelen
2013, Ecosphere (4) 1-14
Host-parasite dynamics and strategies for managing infectious diseases of wildlife depend on the functional relationship between disease transmission rates and host density. However, the disease transmission function is rarely known for free-living wildlife, leading to uncertainty regarding the impacts of diseases on host populations and effective control actions. We evaluated...
Nest success of grassland birds in oak barrens and dry prairies in west central Wisconsin
Susan M. Vos, Christine Ribic
2013, Northeastern Naturalist (20) 131-142
We investigated nesting success of grassland birds on dry prairie and oak barrens patches embedded within a forested matrix on Fort McCoy Military Installation. We monitored 280 nests of 9 grassland-bird species from mid-May to late July 2000–2002. Pooecetes gramineus (Vesper Sparrow) andAmmodramus savannarum (Grasshopper Sparrow) were the most abundant nesting species. Vesper...
Genetic structure of the Common Eider in the western Aleutian Islands prior to fox eradication
Sarah A. Sonsthagen, Sandra L. Talbot, Robert E. Wilson, Margaret R. Petersen, Jeffrey C. Williams, G. Vernon Byrd, Kevin G. McCracken
2013, The Condor (115) 28-39
Since the late 18th century bird populations residing in the Aleutian Archipelago have been greatly reduced by introduced arctic foxes (Alopex lagopus). We analyzed data from microsatellite, nuclear intron, and mitochondrial (mtDNA) loci to examine the spatial genetic structure, demography, and gene flow among four Aleutian Island populations of the Common...
Re-introduction of tule elk to Point Reyes National Seashore, California, USA
Peter J. Gogan, McCrea A. Cobb, Natalie B. Gates, Reginald H. Barrett
Pritpal S. Soorae, editor(s)
2013, Book chapter, Global Re-introduction Perspectives: 2013. Further case studies from around the globe
Tule elk (Cervus elaphus nannodes), a subspecies endemic to California, was historically found in large herds throughout much of central and coastal California. Market hunting during the California Gold Rush decimated these herds, and by 1895, only two to 10 elk remained. This remnant group was protected and served as...
Book review: Economic geology: Principles and practice: Metals, minerals, coal and hydrocarbons—Introduction to formation and sustainable exploitation of mineral deposits
Eric D. Anderson
2013, Economic Geology (108) 1517-1518
This volume, available in both hardcover and paperback, is an English translation of the fifth edition of the German language text Mineralische und Energie-Rohstoffe. The book provides an extensive overview of natural resources and societal issues associated with extracting raw materials. The comprehensive list of raw materials discussed includes metals,...
Accumulation of organic carbon-rich strata along the western margin and in the center of the North American western interior seaway during the Cenomanian-Turonian Transgression: Chapter 3
W.E. Dean, E.G. Kauffman, M.A. Arthur
A. L. Titus, M. A. Loewen, editor(s)
2013, Book chapter, At the top of the Grand Staircase: The Late Cretaceous of Southern Utah
No abstract available....
An ecological perspective on the changing face of Brucella abortus in the western United States
Paul C. Cross, Eric J. Maichak, Angela Brennan, Brandon Scurlock, John C. Henningsen, Gordon Luikart
2013, OIE Revue Scientifique et Technique (32) 79-87
After a hiatus during the 1990s, outbreaks of Brucella abortus in cattle are occurring more frequently in some of the western states of the United States, namely, Montana, Wyoming and Idaho. This increase is coincident with increasing brucellosis seroprevalence in elk (Cervus elaphus), which is correlated with elk density. Vaccines...
Deformational and erosional history for the Abiquiu and contiguous area, north-central New Mexico: Implications for formation of the Abiquiu embayment and a discussion of new geochronological and geochemical analysis
Florian Maldonado, Daniel P. Miggins, James R. Budahm
2013, GSA Special Papers (494) 125-155
Geologic mapping, age determinations, and geochemistry of rocks exposed in the Abiquiu area of the Abiquiu embayment of the Rio Grande rift, north-central New Mexico, provide data to determine fault-slip and incision rates. Vertical-slip rates for faults in the area range from 16 m/m.y. to 42 m/m.y., and generally...
Spatial Relation Predicates in Topographic Feature Semantics
Dalia E. Varanka, Holly K. Caro
2013, Book chapter, Cognitive and Linguistic Aspects of Geographic Space
Topographic data are designed and widely used for base maps of diverse applications, yet the power of these information sources largely relies on the interpretive skills of map readers and relational database expert users once the data are in map or geographic information system (GIS) form. Advances in geospatial semantic...
Impacts of land-use change to ecosystem services
Tom Stohlgren, Tracy R. Holcombe
2013, Book chapter, Climate vulnerability: understanding and addressing threats to essential resources
Increasing human populations on the landscape and globe coincide with increasing demands for food, energy, and other natural resources, with generally negative impacts to wildlife habitat, air and water quality, and natural scenery. Here we define and describe the impacts of land-use change on ecosystem services – the services that...
Choosing a DIVA: a comparison of emerging digital imagery vegetation analysis techniques
Christopher F. Jorgensen, Ryan J. Stutzman, Lars C. Anderson, Suzanne E. Decker, Larkin A. Powell, Walter H. Schacht, Joseph J. Fontaine
2013, Applied Vegetation Science (16) 552-560
Question: What is the precision of five methods of measuring vegetation structure using ground-based digital imagery and processing techniques? Location: Lincoln, Nebraska, USA Methods: Vertical herbaceous cover was recorded using digital imagery techniques at two distinct locations in a mixed-grass prairie. The precision of five ground-based digital imagery vegetation analysis...
Observed ices in the Solar System
Roger N. Clark, Will Grundy, Robert R. Carlson, Keith Noll
Murthy Gudipati, Julie C. Castillo-Rogez, editor(s)
2013, Book chapter
Ices have been detected and mapped on the Earth and all planets and/or their satellites further from the sun. Water ice is the most common frozen volatile observed and is also unambiguously detected or inferred in every planet and/or their moon(s) except Venus. Carbon dioxide is also extensively found in...
Making the case for the Picuris orogeny: Evidence for a 1500 to 1400 Ma orogenic event in the southwestern United States
Christopher G. Daniel, James V. Jones III, Christopher L. Andronicos, Mary Beth Gray
Lon D. Abbott, Gregory S. Hancock, editor(s)
2013, Book chapter, Classic concepts and new directions: Exploring 125 years of GSA discoveries in the Rocky Mountain region
The early Mesoproterozoic (ca. 1400 Ma) is an enigmatic time in the tectonic evolution of southern Laurentia. Circa 1400 Ma granites within Laurentia and multiple other continents have distinctive geochemistry consistent with crustal extension or mantle upwelling. In the southwestern United States, these granites are commonly foliated...
Climate change has indirect effects on resource use and overlap among coexisting bird species with negative consequences for their reproductive success
Thomas E. Martin, Sonya K. Auer
2013, Global Change Biology (19) 411-419
Climate change can modify ecological interactions, but whether it can have cascading effects throughout ecological networks of multiple interacting species remains poorly studied. Climate-driven alterations in the intensity of plant–herbivore interactions may have particularly profound effects on the larger community because plants provide habitat for a wide diversity of organisms....
Effect of dissolved organic matter source and character on microbial Hg methylation in Hg–S–DOM solutions
Andrew M. Graham, George R. Aiken, Cynthia Gilmour
2013, Environmental Science & Technology (47) 5746-5754
Dissolved organic matter (DOM) is a key component of fate and transport models for most metals, including mercury (Hg). Utilizing a suite of diverse DOM isolates, we demonstrated that DOM character, in addition to concentration, influences inorganic Hg (Hg(II)i) bioavailability to Hg-methylating bacteria. Using a model Hg-methylating bacterium, Desulfovibrio desulfuricansND132, we...
Zinc isotope and transition-element dynamics accompanying hydrozincite biomineralization in the Rio Naracauli, Sardinia, Italy
Richard B. Wanty, F. Podda, Giovanni De Giudici, R. Cidu, Pierfranco Lattanzi
2013, Chemical Geology (337-338) 1-10
The Rio Naracauli in SW Sardinia drains part of the Ingurtosu Zn–Pb mining district, and contains extreme concentrations of dissolved Zn at near-neutral pH. In the upper reaches of the stream, pH, alkalinity and Zn concentrations are such that hydrozincite [Zn5(CO3)2(OH)6] precipitates in a biologically mediated process facilitated by a...
NDVI saturation adjustment: a new approach for improving cropland performance estimates in the Greater Platte River Basin, USA
Yingxin Gu, Bruce K. Wylie, Daniel M. Howard, Khem P. Phuyal, Lei Ji
2013, Ecological Indicators (30) 1-6
In this study, we developed a new approach that adjusted normalized difference vegetation index (NDVI) pixel values that were near saturation to better characterize the cropland performance (CP) in the Greater Platte River Basin (GPRB), USA. The relationship between NDVI and the ratio vegetation index (RVI) at high NDVI values...
Report A: Fish distribution and population dynamics in Rock Creek, Klickitat County, Washington
Brady Allen, Carrie S. Munz, Elaine Harvey
2013, Report, Rock Creek fish and habitat assessment for prioritization of restoration and protection actions
The U.S. Geological Survey collaborated with the Yakama Nation starting in fall of 2009 to study the fish populations in Rock Creek, a Washington State tributary of the Columbia River 21 kilometers upstream of John Day Dam. Prior to this study, very little was known about the ESA-listed (threatened) Mid-Columbia...
Fate(s) of injected CO2 in a coal-bearing formation, Louisiana, Gulf Coast Basin: Chemical and isotopic tracers of microbial-brine-rock-CO2 interactions
Jenna L. Shelton
2013, Thesis
Coal beds are one of the most promising reservoirs for geologic carbon dioxide (CO₂) sequestration, as CO₂ can strongly adsorb onto organic matter and displace methane; however, little is known about the long-term fate of CO₂ sequestered in coal beds. The "2800' sand" of the Olla oil field is a...
Temporal and spatial variation in bird and human use of beaches in southern California
Kevin D. Lafferty, Donald A. Rodriguez, Angela Chapman
2013, SpringerPlus (2) 1-14
Southern California’s beaches can support a remarkable diversity of birds along the Pacific Flyway. We asked whether seasonal, annual, and spatial factors affect bird richness and abundance on public beaches. To do so, we conducted three years of monthly bird surveys on 12 sandy beaches in Ventura California. Across all...
Landsat Data Continuity Mission, now Landsat-8: six months on-orbit
Brian L. Markham, James C. Storey, James R. Irons
2013, Conference Paper, SPIE 8866, Earth Observing Systems
The Landsat Data Continuity Mission (LDCM) with two pushbroom Earth-imaging sensors, the Operational Land Imager (OLI) and the Thermal InfraRed Sensor (TIRS), was launched on February 11, 2013. Its on-orbit check out period or commissioning phase lasted about 90 days. During this phase the spacecraft and its instruments were activated,...
Andesites of the 2009 eruption of Redoubt Volcano, Alaska
Michelle L. Coombs, Thomas W. Sisson, Heather A. Bleick, Sarah M. Henton, Christopher J. Nye, Allison Payne, Cheryl E. Cameron, Jessica F. Larsen, Kristi L. Wallace, Katharine F. Bull
2013, Journal of Volcanology and Geothermal Research (259) 349-372
Crystal-rich andesites that erupted from Redoubt Volcano in 2009 range from 57.5 to 62.5 wt.% SiO2 and have phenocryst and phenocryst-melt relations consistent with staging in the upper crust. Early explosive products are low-silica andesites (LSA, < 58 wt.% SiO2) that ascended from deeper crustal levels during or before the 6 months of precursory...
