Testing taxon tenacity of tortoises: evidence for a geographical selection gradient at a secondary contact zone
Taylor Edwards, Kristin H. Berry, Richard D. Inman, Todd C. Esque, Kenneth E. Nussear, Cristina A. Jones, Melanie Culver
2015, Ecology and Evolution (5) 2095-2114
We examined a secondary contact zone between two species of desert tortoise, Gopherus agassizii and G. morafkai. The taxa were isolated from a common ancestor during the formation of the Colorado River (4-8 mya) and are a classic example of allopatric speciation. However, an anomalous population of G. agassizii comes...
Shippingport, Kentucky, is the type locality for the white-footed mouse, Peromyscus leucopus (Rafinesque, 1818) (Mammalia: Rodentia: Cricetidae)
Neal Woodman
2015, Proceedings of the Biological Society of Washington (182) 152-163
The white-footed mouse, Musculus leucopus Rafinesque, 1818 (= Peromyscus leucopus), is a common small mammal that is widespread in the eastern and central United States. Its abundance in many habitats renders it ecologically important, and its status as a reservoir for hantavirus and Lyme disease gives the species medical and...
Effects of fragmentation on the spatial ecology of the California Kingsnake (Lampropeltis californiae)
Michael P. Anguiano, James E. Diffendorfer
2015, Journal of Herpetology (49) 420-427
We investigated the spatial ecology of the California Kingsnake (Lampropeltis californiae) in unfragmented and fragmented habitat with varying patch sizes and degrees of exposure to urban edges. We radiotracked 34 Kingsnakes for up to 3 yr across four site types: interior areas of unfragmented ecological reserves, the urbanized edge of...
Health condition of juvenile Chelonia mydas related to fibropapillomatosis in southeast Brazil
Marcello Renan de Deus Santos, Agnaldo Silva Martins, Cecilia Baptistotte, Thierry M. Work
2015, Diseases of Aquatic Organisms (115) 193-201
Packed cell volume (PCV), plasma biochemistry, visual body condition (BC), and calculated body condition index (BCI) were evaluated in 170 wild juvenile green sea turtles Chelonia mydas from an aggregation in the effluent canal of a steel mill in Brazil. Occurrence of cutaneous fibropapillomatosis (FP) was observed in 44.1% of the animals...
Changes in the Lake Michigan food web following dreissenid mussel invasions: A synthesis
Charles P. Madenjian, David B. Bunnell, David M. Warner, Steven A. Pothoven, Gary L. Fahnenstiel, Thomas F. Nalepa, Henry A. Vanderploeg, Iyob Tsehaye, Randall M. Claramunt, Richard D Clark
2015, Journal of Great Lakes Research (41) 217-231
Using various available time series for Lake Michigan, we examined changes in the Lake Michigan food web following the dreissenid mussel invasions and identified those changes most likely attributable to these invasions, thereby providing a synthesis. Expansion of the quagga mussel (Dreissena rostriformis bugensis) population into deeper waters, which began...
Using ground and intact coal Samples to evaluate hydrocarbon fate during supercritical CO2 injection into coal beds: effects of particle size and coal moisture
Jon Kolak, Paul C. Hackley, Leslie F. Ruppert, Peter D. Warwick, Robert Burruss
2015, Energy & Fuels (29) 5187-5203
To investigate the potential for mobilizing organic compounds from coal beds during geologic carbon dioxide (CO2) storage (sequestration), a series of solvent extractions using dichloromethane (DCM) and using supercritical CO2 (40 °C and 10 MPa) were conducted on a set of coal samples collected from Louisiana and Ohio. The coal samples...
Vegetation changes associated with a population irruption by Roosevelt elk
H D Starns, Floyd W. Weckerly, Mark A. Ricca, Adam Duarte
2015, Ecology and Evolution (5) 109-120
Interactions between large herbivores and their food supply are central to the study of population dynamics. We assessed temporal and spatial patterns in meadow plant biomass over a 23-year period for meadow complexes that were spatially linked to three distinct populations of Roosevelt elk (Cervus elaphus roosevelti) in northwestern California....
Substantial nitrous oxide emissions from intertidal sediments and groundwater in anthropogenically-impacted West Falmouth Harbor, Massachusetts
Serena Moseman-Valtierra, Kevin D. Kroeger, John Crusius, Sandy Baldwin, Adrian G. Mann, Thomas W. Brooks, E. Pugh
2015, Chemosphere (119) 1281-1288
Large N2O emissions were observed from intertidal sediments in a coastal estuary, West Falmouth Harbor, MA, USA. Average N2O emission rates from 41 chambers during summer 2008 were 10.7 mol N2O m(-2) h(-1)±4.43 μmol N2O m(-2) h(-1) (standard error). Emissions were highest from sediments within a known wastewater plume, where...
A likelihood-based approach for assessment of extra-pair paternity and conspecific brood parasitism in natural populations
Patrick R. Lemons, T.C. Marshall, Sarah E. McCloskey, S.A. Sethi, Joel A. Schmutz, James S. Sedinger
2015, Molecular Ecology Resources (15) 107-116
Genotypes are frequently used to assess alternative reproductive strategies such as extra-pair paternity and conspecific brood parasitism in wild populations. However, such analyses are vulnerable to genotyping error or molecular artifacts that can bias results. For example, when using multilocus microsatellite data, a mismatch at a single locus, suggesting the...
Time‐dependent renewal‐model probabilities when date of last earthquake is unknown
Edward H. Field, Thomas H. Jordan
2015, Bulletin of the Seismological Society of America (105) 459-463
We derive time-dependent, renewal-model earthquake probabilities for the case in which the date of the last event is completely unknown, and compare these with the time-independent Poisson probabilities that are customarily used as an approximation in this situation. For typical parameter values, the renewal-model probabilities exceed Poisson results by more...
Computing elastic‐rebound‐motivated rarthquake probabilities in unsegmented fault models: a new methodology supported by physics‐based simulators
Edward H. Field
2015, Bulletin of the Seismological Society of America (105) 544-559
A methodology is presented for computing elastic‐rebound‐based probabilities in an unsegmented fault or fault system, which involves computing along‐fault averages of renewal‐model parameters. The approach is less biased and more self‐consistent than a logical extension of that applied most recently for multisegment ruptures in California. It also enables the application...
Efficacy of two approaches for disinfecting surfaces and water infested with quagga mussel veligers
Christine M Moffitt, Amber Barenburg, Kelly A. Stockton, Barnaby J. Watten
Wai Hing Wong, Shawn L. Gerstenberger, editor(s)
2015, Book, Biology and Management of Invasive Quagga and Zebra Mussels in the Western United States
Entrainment of bed material by Earth-surface mass flows: review and reformulation of depth-integrated theory
Richard M. Iverson, Chaojun Ouyang
2015, Reviews of Geophysics (53) 1-32
Earth-surface mass flows such as debris flows, rock avalanches, and dam-break floods can grow greatly in size and destructive potential by entraining bed material they encounter. Increasing use of depth-integrated mass- and momentum-conservation equations to model these erosive flows motivates a review of the underlying theory. Our review indicates that...
Limnogeology, news in brief
Michael R. Rosen, Elizabeth Gierlowski-Kordesch
2015, Environmental Earth Sciences (73) 913-917
We've invited Michael R. Rosen, water quality specialist within the USGS Water Science Field Team in Carson City and Elizabeth Gierlowski-Kordesch, professor of geology at Ohio University, to take a look at the intriguing new developments that are emerging in limnogeologic studies. These studies are increasing our understanding of how...
Genomic single-nucleotide polymorphisms confirm that Gunnison and Greater sage-grouse are genetically well differentiated and that the Bi-State population is distinct
Sara J. Oyler-McCance, Robert S. Cornman, Kenneth L. Jones, Jennifer A. Fike
2015, The Condor (117) 217-227
Sage-grouse are iconic, declining inhabitants of sagebrush habitats in western North America, and their management depends on an understanding of genetic variation across the landscape. Two distinct species of sage-grouse have been recognized, Greater (Centrocercus urophasianus) and Gunnison sage-grouse (C. minimus), based on morphology, behavior, and variation at neutral genetic...
“All Models Are Wrong, but Some Are Useful”
Edward H. Field
2015, Seismological Research Letters (86) 291-293
Building a new model, especially one used for policy purposes, takes considerable time, effort, and resources. In justifying such expenditures, one inevitably spends a lot of time denigrating previous models. For example, in pitching the third Uniform California Earthquake Rupture Forecast (UCERF3) (http://www.WGCEP.org/UCERF3), criticisms of the previous model included...
Coles Hill Uranium Deposit, Virginia, United States, and the Application of UNFC-2009
Susan M. Hall
2015, Book chapter, Application of UNFC to Nuclear Fuel Resources - Selected Case Studies
The case study presented here reviews the uranium resource estimates and summarizes the property situation of the Coles Hill uranium Deposit. Uranium resources at Coles Hill are then classified according to UNFC-2009. The Coles Hill Deposit is located in Pittsylvania County, southern Virginia, United States (Figure 14). Coles Hill was...
A summary of the late Cenozoic stratigraphic and tectonic history of the Santa Clara Valley, California
Victoria E. Langenheim, Robert C. Jachens, Carl M. Wentworth, Russell W. Graymer, Richard G. Stanley, Robert J. McLaughlin, Robert W. Simpson, Robert A. Williams, D. W. Andersen, David A. Ponce
2015, Geosphere (11) 50-62
The late Cenozoic stratigraphic and tectonic history of the Santa Clara Valley illustrates the dynamic nature of the North American–Pacific plate boundary and its effect on basin and landscape development. Prior to early Miocene time, the area that became Santa Clara Valley consisted of eroding Franciscan complex basement structurally interleaved...
Yellowstone grizzly bear investigations — Annual report of the Interagency Grizzly Bear Study Team 2014
Frank T. van Manen, Mark A. Haroldson, Suzanna C. Soileau, editor(s)
2015, 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 2014. The report also contains a summary of grizzly bear management actions to address conflict situations. ...
Book reviews: The Double-crested Cormorant, plight of a feathered pariah, by L.R. Wires/The birds of New Hampshire by Allan R, Keith and Robert P. Fox
R. Todd Engstrom, Daniel D. Roby, Jon S. Greenlaw
2015, The Auk (132) 315-317
No abstract available....
Truncorotalia crassaformis from its type locality: Comparison with Caribbean plankton and Pliocene relatives
George H. Scott, James C. Ingle Jr., Brendan McCane, Charles L. Powell II, Robert C. Thunell
2015, Marine Micropaleontology (117) 1-12
Truncorotalia crassaformis has been identified in Pliocene-Holocene assemblages globally but there has been little analysis of specimens from its type locality at Lomita Quarry, California. This has led to confusion about some diagnostic criteria, particularly the presence of a peripheral keel. To better understand variation specimens are studied from the type...
Scale-appropriate adaptation strategies and actions in the Northeast and Midwest United States
Michelle D. Staudinger, Laura Hilberg, Maria Janowiak, Chris Caldwell, Anthony W. D’Amato, Evan H. Campbell Grant, Radley M. Horton, Rachel A. Katz, Chris Neiil, Keith H. Nislow, Ken Potter, Erika Rowland, Chris Swanston, Frank Thompson, Kristopher J. Winiarski
2015, Report, Integrating climate change into northeast and midwest State Wildlife Action Plans
Climate Change Adaptation is a growing field within conservation and natural resource management. Actions taken toward climate change adaptation account for climate impacts and ecological responses, both current and projected into the future. These actions attempt to accomplish a number of goals, including the conservation of wildlife and ecosystems by...
Using the Maxent program for species distribution modelling to assess invasion risk
Catherine S. Jarnevich, Nicholas E. Young
R.C Venette, editor(s)
2015, Book chapter, Pest Risk Modelling and Mapping for Invasive Alien Species
MAXENT is a software package used to relate known species occurrences to information describing the environment, such as climate, topography, anthropogenic features or soil data, and forecast the presence or absence of a species at unsampled locations. This particular method is one of the most popular species distribution modelling techniques...
Climate change in the Northeast and Midwest United States
Alexander Bryan, Ambarish Karmalkar, Ethan Coffel, Liang Ning, Radley M. Horton, Eleonora Demaria, Fanxing Fan, Raymond S. Bradley, Richard Palmer
2015, Report, Integrating climate change into northeast and midwest State Wildlife Action Plans
The climate is changing rapidly in ways that have already impacted wildlife and their habitats. Here, we present a summary of the observed past and projected future climate changes in the region that are relevant to wildlife and ecosystems, as well as what we know and don’t know in order...
Evaluation of vector coastline features extracted from 'structure from motion'-derived elevation data
Nicole Kinsman, Ann E. Gibbs, Matt Nolan
2015, Conference Paper, Proceedings of the Coastal Sediments 2015
For extensive and remote coastlines, the absence of high-quality elevation models—for example, those produced with lidar—leaves some coastal populations lacking one of the essential elements for mapping shoreline positions or flood extents. Here, we compare seven different elevation products in a lowlying area in western Alaska to establish their appropriateness...
