Population density influences dispersal in female white-tailed deer
Clayton L. Lutz, Duane R. Diefenbach, Christopher S. Rosenberry
2015, Journal of Mammalogy (96) 494-501
Dispersal behavior in white-tailed deer (Odocoileus virginianus) predominantly occurs in 1-year-old males; however, females of the same age also disperse. The timing of female dispersal during fawning season and low dispersal rates suggest that competition for mates and reduced inbreeding are not ultimate causes of female dispersal, as suggested for...
Evidence for skipped spawning in a potamodromous cyprinid, humpback chub (Gila cypha), with implications for demographic parameter estimates
Kristen Nicole Pearson, William L. Kendall, Dana L. Winkelman, William R. Persons
2015, Fisheries Research (170) 50-59
Our findings reveal evidence for skipped spawning in a potamodromous cyprinid, humpback chub (HBC; Gila cypha ). Using closed robust design mark-recapture models, we found, on average, spawning HBC transition to the skipped spawning state (<img class="imgLazyJSB inlineImage" title="View the MathML source" src="http://ars.els-cdn.com/content/image/1-s2.0-S0165783615001563-si1.gif"...
Examples of deformation-dependent flow simulations of conjunctive use with MF-OWHM
Randall T. Hanson, Jonathan A. Traum, Scott E. Boyce, Wolfgang Schmid, Joseph D. Hughes
2015, Proceedings of the International Association of Hydrological Sciences (372) 449-453
The dependency of surface- and groundwater flows and aquifer hydraulic properties on deformation induced by changes in aquifer head is not accounted for in the standard version of MODFLOW. A new USGS integrated hydrologic model, MODFLOW-OWHM, incorporates this dependency by linking subsidence and mesh deformation with changes in aquifer transmissivity...
Diel resource partitioning among juvenile Atlantic Salmon, Brown Trout, and Rainbow Trout during summer
James H. Johnson, James E. McKenna Jr.
2015, North American Journal of Fisheries Management (35) 586-597
Interspecific partitioning of food and habitat resources has been widely studied in stream salmonids. Most studies have examined resource partitioning between two native species or between a native species and one that has been introduced. In this study we examine the diel feeding ecology and habitat use of three species...
Adaptive management
Craig R. Allen, Ahjond S. Garmestani
Craig R. Allen, Ahjond S. Garmestani, editor(s)
2015, Book chapter, Adaptive management of social-ecological systems
Adaptive management is an approach to natural resource management that emphasizes learning through management where knowledge is incomplete, and when, despite inherent uncertainty, managers and policymakers must act. Unlike a traditional trial and error approach, adaptive management has explicit structure, including a careful elucidation of goals, identification of alternative management...
Representativeness of soil samples collected to assess mining-related contamination of flood plains in southeast Kansas
Kyle E. Juracek
2015, Conference Paper, 2015 Joint Federal Interagency Conference on Sedimentation and Hydrologic Modeling (SEDHYD 2015)
Historical lead and zinc mining in the Tri-State Mining District (TSMD), located in parts of southeast Kansas, southwest Missouri, and northeast Oklahoma, has resulted in a substantial ongoing input of lead and zinc to the environment (Juracek, 2006; Juracek and Becker, 2009). In response to concern about the mining-related contamination,...
Rapid damage mapping for the 2015 M7.8 Gorkha earthquake using synthetic aperture radar data from COSMO-SkyMed and ALOS-2 satellites
Sang-Ho Yun, Kenneth W. Hudnut, Susan Owen, Frank Webb, Mark Simons, Patrizia Sacco, Eric Gurrola, Gerald Manipon, Cunren Liang, Eric Fielding, Pietro Milillo, Hook Hua, Alessandro Coletta
2015, Seismological Research Letters (86) 1549-1557
The 25 April 2015 Mw 7.8 Gorkha earthquake caused more than 8000 fatalities and widespread building damage in central Nepal. The Italian Space Agency’s COSMO–SkyMed Synthetic Aperture Radar (SAR) satellite acquired data over Kathmandu area four days after the earthquake and the Japan Aerospace Exploration Agency’s Advanced Land Observing Satellite-2 SAR satellite...
Serologic evidence of influenza A (H14) virus introduction into North America
Neus Latorre-Margalef, Andrew M. Ramey, Alinde Fojtik, David E. Stallknecht
2015, Emerging Infectious Diseases (21) 2257-2259
Although a diverse population of influenza A viruses (IAVs) is maintained among ducks, geese, shorebirds, and gulls, not all of the 16 avian hemagglutinin (HA) subtypes are equally represented (1). The 14th HA subtype, commonly known as the H14 subtype, was historically limited to isolates from the former Soviet Union...
Breeding ecology of Wandering Tattlers Tringa incana: a study from south-central Alaska
Robert E. Gill Jr., Pavel S. Tomkovich, Maksim N. Dementyev
2015, Wader Study Group Bulletin (122) 99-114
Montane-nesting shorebirds are arguably the least studied of the Charadriiformes, owing in part to the remoteness of their breeding areas, low nesting densities, and specialized behaviors. We studied a marked population of the Wandering Tattler Tringa incana, during a three-year period (1997–1999) on nesting grounds in south-central Alaska. Two aspects...
Brumation of introduced Black and White Tegus, Tupinambis merianae (Squamata: Teiidae), in southern Florida
Michelle McEachern, Amy A. Yackel Adams, Page E. Klug, Lee A. Fitzgerald, Robert N. Reed
2015, Southeastern Naturalist (14) 319-328
An established population of Tupinambis merianae (Black and White Tegu) in southeastern Florida threatens the Everglades ecosystem. Understanding the behavioral ecology of Black and White Tegus could aid in management and control plans. Black and White Tegus are seasonally active and brumate during the winter in their native range, but...
Baseline blood Pb levels of black-necked stilts on the upper Texas coast
Thomas V. Riecke, Warren C. Conway, David A. Haukos, Jena A. Moon, Christopher E. Comer
2015, Bulletin of Environmental Contamination and Toxicology (95) 465-469
There are no known biological requirements for lead (Pb), and elevated Pb levels in birds can cause a variety of sub-lethal effects and mortality. Historic and current levels of Pb in mottled ducks (Anas fulvigula) suggest that environmental sources of Pb remain available on the upper Texas coast....
Developing in situ non-destructive estimates of crop biomass to address issues of scale in remote sensing
Michael T. Marshall, Prasad S. Thenkabail
2015, Remote Sensing (7) 808-835
Ground-based estimates of aboveground wet (fresh) biomass (AWB) are an important input for crop growth models. In this study, we developed empirical equations of AWB for rice, maize, cotton, and alfalfa, by combining several in situ non-spectral and spectral predictors. The non-spectral predictors included: crop height (H), fraction of absorbed...
Raccoon (Procyon lotor) diurnal den use within an intensively managed forest in central West Virginia
Sheldon F. Owen, Jacob L. Berl, John W. Edwards, W. Mark Ford, Petra Bohall Wood
2015, Northeastern Naturalist (22) 41-52
Intensive forest management may influence the availability of suitable den sites for large den-seeking species, such as Procyon lotor (Raccoon). As part of a Raccoon ecology study on an industrial forest in the Allegheny Mountains of central West Virginia, we radio-tracked 32 Raccoons to 175 diurnal den sites to determine relative use...
Implications of climate and land use change
Jefferson S. Hall, Enrique Murgueitio, Zoraida Calle, Ciara Raudsepp-Hearne, Robert F. Stallard, Patricia Balvanera
Jefferson S. Hall, Vanessa Kirn, Estrella Yanguas-Fernandez, editor(s)
2015, Book chapter, Managing watersheds for ecosystem services in the steepland neotropics
This chapter relates ecosystem services to climate change and land use. The bulk of the chapter focuses on ecosystem services and steepland land use in the humid Neotropics – what is lost with land-cover changed, and what is gained with various types of restoration that are sustainable given private ownership....
Raccoon spatial requirements and multi-scale habitat selection within an intensively managed central Appalachian forest
Sheldon F. Owen, Jacob L. Berl, John W. Edwards, W. Mark Ford, Petra Bohall Wood
2015, American Midland Naturalist (174) 87-95
We studied a raccoon (Procyon lotor) population within a managed central Appalachian hardwood forest in West Virginia to investigate the effects of intensive forest management on raccoon spatial requirements and habitat selection. Raccoon home-range (95% utilization distribution) and core-area (50% utilization distribution) size differed between sexes with males maintaining larger...
Karst of the Mid-Atlantic region in Maryland, West Virginia, and Virginia
Daniel H. Doctor, David J. Weary, David K. Brezinski, Randall C. Orndorff, Lawrence E. Spangler
David K. Brezinski, Jeffrey Halka, Richard A. Ortt Jr., editor(s)
2015, Book chapter, Tripping from the Fall Line: Field Excursions for the GSA Annual Meeting, Baltimore, 2015
The Mid-Atlantic region hosts some of the most mature karst landscapes in North America, developed in highly deformed rocks within the Piedmont and Valley and Ridge physiographic provinces. This guide describes a three-day excursion to examine karst development in various carbonate rocks by following Interstate 70 west from Baltimore across...
Spatial and temporal variation in marine birds in the north Gulf of Alaska: The value of marine bird monitoring within Gulf Watch Alaska
Kathy J. Kuletz, Daniel Esler
2015, Report, Quantifying temporal and spatial ecosystem variability across the Northern Gulf of Alaska to understand mechanisms of change: Science synthesis report for the Gulf Watch Alaska Program
Birds offer useful insights into marine ecosystems. Marine birds are responsive to spatial and temporal variation in the environment, that often originates with fluctuations in oceanographic and climatic drivers and permeates up through food webs to conspicuous top predators such as seabirds (Coyle and Pinchuk 2005, Speckman et al. 2005,...
Cr(VI) occurrence and geochemistry in water from public-supply wells in California
John A. Izbicki, Michael Wright, Whitney A. Seymour, R. Blaine McCleskey, Miranda S. Fram, Kenneth Belitz, Bradley K. Esser
2015, Applied Geochemistry (63) 203-217
Hexavalent chromium, Cr(VI), in 918 wells sampled throughout California between 2004 and 2012 by the Groundwater Ambient Monitoring and Assessment-Priority Basin Project (GAMA-PBP) ranged from less than the study reporting limit of 1 microgram per liter (μg/L) to 32 μg/L. Statewide, Cr(VI) was reported in 31 percent of wells and equaled...
A spatial individual-based model predicting a great impact of copious sugar sources and resting sites on survival of Anopheles gambiae and malaria parasite transmission
Lin Zhu, Whitney A. Qualls, John M Marshall, Kris L. Arheart, Donald L. DeAngelis, John W. McManus, Sekou F. Traore, Seydou Doumbia, Yosef Schlein, Gunter C. Muller, John C. Beier
2015, Malaria Journal (14)
BackgroundAgent-based modelling (ABM) has been used to simulate mosquito life cycles and to evaluate vector control applications. However, most models lack sugar-feeding and resting behaviours or are based on mathematical equations lacking individual level randomness and spatial components of mosquito life. Here, a spatial individual-based...
A 2-D process-based model for suspended sediment dynamics: A first step towards ecological modeling
F. M. Achete, M. van der Wegen, D. Roelvink, B. Jaffe
2015, Hydrology and Earth System Sciences (19) 2837-2857
In estuaries suspended sediment concentration (SSC) is one of the most important contributors to turbidity, which influences habitat conditions and ecological functions of the system. Sediment dynamics differs depending on sediment supply and hydrodynamic forcing conditions that vary over space and over time. A robust sediment transport model is a...
Physiological preparedness and performance of Atlantic salmon Salmo salar smolts in relation to behavioural salinity preferences and thresholds
D.S. Stich, G.B. Zydlewski, Joseph D. Zydlewski
2015, Journal of Fish Biology (88) 595-617
This study investigated the relationships between behavioural responses of Atlantic salmon Salmo salarsmolts to saltwater (SW) exposure and physiological characteristics of smolts in laboratory experiments. It concurrently described the behaviour of acoustically tagged smolts with respect to SW and tidal cycles during estuary migration. Salmo salar smolts increased their use of SW relative...
Factors affecting defensive strike behavior in Brown Treesnakes (Boiga irregularis) provoked by humans
McKayka M. Spencer, Bjorn Lardner, M.J. Mazurek, Robert N. Reed
2015, Herpetological Conservation and Biology (10) 703-710
Striking is a typical antipredator defense exhibited by many species of snakes. While trapping Brown Treesnakes (Boiga irregularis) on Guam, we observed that snakes most frequently struck at an approaching person at a site where snakes had been trapped, marked, and handled in the past. Using a combination of between-sites...
Population characteristics of channel catfish near the northern edge of their distribution: implications for management
K. P. Carter-Lynn, Michael C. Quist
2015, Fisheries Management and Ecology (22) 530-538
Channel catfish, Ictalurus punctatus (Rafinesque), populations in six lakes in northern Idaho, USA, were sampled to describe their population characteristics. During the summers of 2011 and 2012, 4864 channel catfish were sampled. Channel catfish populations had low to moderate catch rates, and length structure was dominated by fish <400 mm. Channel catfish were...
Relations between soil hydraulic properties and burn severity
John A. Moody, Brian A. Ebel, Petter Nyman, Deborah A. Martin, Cathelijne R. Stoof, Randy McKinley
2015, International Journal of Wildland Fire (25) 279-293
Wildfire can affect soil hydraulic properties, often resulting in reduced infiltration. The magnitude of change in infiltration varies depending on the burn severity. Quantitative approaches to link burn severity with changes in infiltration are lacking. This study uses controlled laboratory measurements to determine relations between a remotely sensed burn severity...
Climate change and wildfire risk in an expanding wildland–urban interface: a case study from the Colorado Front Range Corridor
Zhihua Liu, Michael C. Wimberly, Aashis Lamsal, Terry L. Sohl, Todd Hawbaker
2015, Landscape Ecology (30) 1943-1957
Context Wildfire is a particular concern in the wildland–urban interface (WUI) of the western United States where human development occurs close to flammable natural vegetation. Objectives (1) Assess the relative influences of WUI expansion versus climate-driven fire regime change on spatial and temporal...
