Toxicity of copper sulfate and rotenone to Chinese mystery snail (Bellamya chinensis)
Danielle M. Haak, Bruce J. Stephen, Robert A. Kill, Nicholas A. Smeenk, Craig R. Allen, Kevin L. Pope
2014, Management of Biological Invasions (5) 371-375
The Chinese mystery snail (Bellamya chinensis) is a freshwater snail native to Southeast Asia, Japan, and Russia and is currently classified as an invasive species in at least 27 states in the USA. The species tolerates a wide range of environmental conditions, making management of established populations difficult. We tested...
Hydrogeology, hydraulic characteristics, and water-quality conditions in the surficial, Castle Hayne and Peedee aquifers of the greater New Hanover County area, North Carolina, 2012-13
Kristen Bukowski McSwain, Laura N. Gurley, Dominick J. Antolino
2014, Scientific Investigations Report 2014-5169
A major issue facing the greater New Hanover County, North Carolina, area is the increased demand for drinking water resources as a result of rapid growth. The principal sources of freshwater supply in the greater New Hanover County area are withdrawals of surface water from the Cape Fear River and...
Stream seepage and groundwater levels, Wood River Valley, south-central Idaho, 2012-13
James R. Bartolino
2014, Scientific Investigations Report 2014-5151
Stream discharge and water levels in wells were measured at multiple sites in the Wood River Valley, south-central Idaho, in August 2012, October 2012, and March 2013, as a component of data collection for a groundwater-flow model of the Wood River Valley aquifer system. This model is a cooperative and...
Geophysical expression of a buried niobium and rare earth element deposit: the Elk Creek carbonatite, Nebraska, USA
Benjamin J. Drenth
2014, Interpretation (2) SJ169-SJ179
The lower Paleozoic Elk Creek carbonatite is a 6–8-km-diameter intrusive complex buried under 200 m of sedimentary rocks in southeastern Nebraska. It hosts the largest known niobium deposit in the U.S. and a rare earth element (REE) deposit. The carbonatite is composed of several lithologies, the relations of which are...
Resilience and resistance of sagebrush ecosystems: implications for state and transition models and management treatments
Jeanne C. Chambers, Richard F. Miller, David I. Board, David A. Pyke, Bruce A. Roundy, James B. Grace, Eugene W. Schupp, Robin J. Tausch
2014, Rangeland Ecology and Management (67) 440-454
In sagebrush ecosystems invasion of annual exotics and expansion of piñon (Pinus monophylla Torr. and Frem.) and juniper (Juniperus occidentalis Hook., J. osteosperma [Torr.] Little) are altering fire regimes and resulting in large-scale ecosystem transformations. Management treatments aim to increase resilience to disturbance and enhance resistance to invasive species by...
Ecological scale of bird community response to piñon-juniper removal
Steven T. Knick, Steven E. Hanser, Matthias Leu
2014, Rangeland Ecology and Management (67) 553-562
Piñon (Pinus spp.) and juniper (Juniperus spp.) removal is a common management approach to restore sagebrush (Artemisia spp.) vegetation in areas experiencing woodland expansion. Because many management treatments are conducted to benefit sagebrush-obligate birds, we surveyed bird communities to assess treatment effectiveness in establishing sagebrush bird communities at study sites...
Projections of the Ganges-Brahmaputra precipitation: downscaled from GCM predictors
Md Shahriar Pervez, Geoffrey M. Henebry
2014, Journal of Hydrology (517) 120-134
Downscaling Global Climate Model (GCM) projections of future climate is critical for impact studies. Downscaling enables use of GCM experiments for regional scale impact studies by generating regionally specific forecasts connecting global scale predictions and regional scale dynamics. We employed the Statistical Downscaling Model (SDSM) to downscale 21st century precipitation...
Northern bobwhite predator avoidance behavior in response to varying types of threat
R.A. Perkins, Clint W. Boal, Dale Rollins, R. Perez
2014, Journal of Wildlife Management (78) 1272-1281
The flight behavior and cover use of northern bobwhite (Colinus virginianus) have been examined in several studies, but the current data lack quantitative measures of how bobwhites respond to natural threats. We examined aspects of bobwhite behavior in response to 4 threat categories: researcher, hunter, raptor, and mammal. We found...
Use of isotopic sulfur to determine whitebark pine consumption by Yellowstone bears: a reassessment
Charles C. Schwartz, Justin E. Teisberg, Jennifer K. Fortin, Mark A. Haroldson, Christopher Servheen, Charles T. Robbins, Frank T. van Manen
2014, Wildlife Society Bulletin (38) 664-670
Use of naturally occurring stable isotopes to estimate assimilated diet of bears is one of the single greatest breakthroughs in nutritional ecology during the past 20 years. Previous research in the Greater Yellowstone Ecosystem (GYE), USA, established a positive relationship between the stable isotope of sulfur (δ34S) and consumption of...
Combining demographic and genetic factors to assess population vulnerability in stream species
Erin L. Landguth, Clint C. Muhlfeld, Leslie W. Jones, Robin S. Waples, Diane Whited, Winsor H. Lowe, John Lucotch, Helen Neville, Gordon Luikart
2014, Ecological Applications (24) 1505-1524
Accelerating climate change and other cumulative stressors create an urgent need to understand the influence of environmental variation and landscape features on the connectivity and vulnerability of freshwater species. Here, we introduce a novel modeling framework for aquatic systems that integrates spatially explicit, individual‐based, demographic and genetic (demogenetic) assessments with...
Tidal and seasonal effects on survival rates of the endangered California clapper rail: Does invasive Spartina facilitate greater survival in a dynamic environment?
Cory T. Overton, Michael L. Casazza, John Y. Takekawa, Donald R. Strong, Marcel Holyoak
2014, Biological Invasions (16) 1897-1914
Invasive species frequently degrade habitats, disturb ecosystem processes, and can increase the likelihood of extinction of imperiled populations. However, novel or enhanced functions provided by invading species may reduce the impact of processes that limit populations. It is important to recognize how invasive species benefit endangered species to determine overall...
Variation in the terrestrial isotopic composition and atomic weight of argon
John Karl Böhlke
2014, Pure and Applied Chemistry (86) 1421-1432
The isotopic composition and atomic weight of argon (Ar) are variable in terrestrial materials. Those variations are a source of uncertainty in the assignment of standard properties for Ar, but they provide useful information in many areas of science. Variations in the stable isotopic composition and atomic weight of Ar...
Age-specific survival of male golden-cheeked warblers on the Fort Hood Military Reservation, Texas
Adam Duarte, James E. Hines, James D. Nichols, Jeffrey S. Hatfield, Floyd W. Weckerly
2014, Avian Conservation and Ecology (9)
Population models are essential components of large-scale conservation and management plans for the federally endangered Golden-cheeked Warbler (Setophaga chrysoparia; hereafter GCWA). However, existing models are based on vital rate estimates calculated using relatively small data sets that are now more than a decade old. We estimated more current, precise adult...
Daily survival rates for nests of Black Skimmers from a core breeding area of the Southeastern USA
Gillian L. Brooks, Felicia J. Sanders, Patrick D. Gerard, Patrick G.R. Jodice
2014, Wilson Journal of Ornithology (126) 443-450
Little is known about the reproductive success of Black Skimmers (Rynchops niger) throughout the southeastern USA where availability of undisturbed beaches for nesting is limited. Daily survival rates (DSR) of nests were examined at three nesting sites in Cape Romain National Wildlife Refuge (CRNWR), South Carolina, USA, 2009–2010. The percent...
Factors related to northern goshawk landscape use in the western Great Lakes region
Jason E. Bruggeman, David E. Andersen, James E. Woodford
2014, Journal of Raptor Research (48) 228-239
Northern Goshawks (Accipiter gentilis) are a species of special conservation concern in the western Great Lakes bioregion and elsewhere in North America, and exhibit landscape-scale spatial use patterns. However, little information exists about Northern Goshawk habitat relations at broad spatial extents, as most existing published information comes from a few...
Circulating fat-soluble vitamin concentrations and nutrient composition of aquatic prey eaten by American oystercatchers (Haematopus palliatus) in the southeastern United States
Daphne Carlson-Bremer, Terry M. Norton, Felicia J. Sanders, Brad Winn, Mark D. Spinks, Batsheva A. Glatt, Lisa Mazzaro, Patrick G.R. Jodice, Tai C. Chen, Ellen S. Dierenfeld
2014, Journal of Avian Medicine and Surgery (28) 216-224
The American oystercatcher (Haematopus palliatus palliatus) is currently listed as a species of high concern by the United States Shorebird Conservation Plan. Because nutritional status directly impacts overall health and reproduction of individuals and populations, adequate management of a wildlife population requires intimate knowledge of a species' diet and nutrient...
Cross-scale assessment of potential habitat shifts in a rapidly changing climate
Catherine S. Jarnevich, Tracy R. Holcombe, Elizabeth Bell, Matthew L. Carlson, Gino Graziano, Melinda Lamb, Steven S. Seefeldt, Jeffrey T. Morisette
2014, Invasive Plant Science and Management (7) 491-502
We assessed the ability of climatic, environmental, and anthropogenic variables to predict areas of high-risk for plant invasion and consider the relative importance and contribution of these predictor variables by considering two spatial scales in a region of rapidly changing climate. We created predictive distribution models, using Maxent, for three...
Uncertainty in the fate of soil organic carbon: A comparison of three conceptually different soil decomposition models
Yujie He, Jinyan Yang, Qianlai Zhuang, A. David McGuire, Qing Zhu, Yaling Liu, Robert O. Teskey
2014, Journal of Geophysical Research G: Biogeosciences (119) 1892-1905
Conventional Q10 soil organic matter decomposition models and more complex microbial models are available for making projections of future soil carbon dynamics. However, it is unclear (1) how well the conceptually different approaches can simulate observed decomposition and (2) to what extent the trajectories of long-term simulations differ when using...
Evaluation of a regional monitoring program's statistical power to detect temporal trends in forest health indicators
Stephanie J. Perles, Tyler Wagner, Brian J. Irwin, Douglas R. Manning, Kristina K. Callahan, Matthew R. Marshall
2014, Environmental Management (54) 641-655
Forests are socioeconomically and ecologically important ecosystems that are exposed to a variety of natural and anthropogenic stressors. As such, monitoring forest condition and detecting temporal changes therein remain critical to sound public and private forestland management. The National Parks Service’s Vital Signs monitoring program collects information on many...
Analysis of regional scale risk to whirling disease in populations of Colorado and Rio Grande cutthroat trout using Bayesian belief network model
Kimberley Kolb Ayre, Colleen A. Caldwell, Jonah Stinson, Wayne G. Landis
2014, Risk Analysis (34) 1589-1605
Introduction and spread of the parasite Myxobolus cerebralis, the causative agent of whirling disease, has contributed to the collapse of wild trout populations throughout the intermountain west. Of concern is the risk the disease may have on conservation and recovery of native cutthroat trout. We employed a Bayesian belief network to...
Structure and tectonics of the northwestern United States from EarthScope USArray magnetotelluric data
Paul A. Bedrosian, Daniel W. Feucht
2014, Earth and Planetary Science Letters (402) 275-289
The magnetotelluric component of the EarthScope USArray program has covered over 35% of the continental United States. Resistivity tomography models derived from these data image lithospheric structure and provide constraints on the distribution of fluids and melt within the lithosphere. We present a three-dimensional resistivity model of the northwestern United...
Comparison of radio-telemetric home range analysis and acoustic detection for Little Brown Bat habitat evaluation
Laci S. Coleman, W. Mark Ford, Christopher A. Dobony, Eric R. Britzke
2014, Northeastern Naturalist (21) 431-445
With dramatic declines of bat populations due to mortality caused by Pseudogymnoascus destructans (White-nose Syndrome), assessing habitat preferences of bats in the northeastern US is now critical to guide the development of regional conservation efforts. In the summer of 2012, we conducted fixed-station simultaneous telemetry to determine nocturnal spatial use...
Organic petrology of the Aptian-age section in the downdip Mississippi Interior Salt Basin, Mississippi, USA: Observations and preliminary implications for thermal maturation history
Brett J. Valentine, Paul C. Hackley, Catherine B. Enomoto, Alana M. Bove, Frank T. Dulong, Celeste D. Lohr, Krystina R. Scott
2014, International Journal of Coal Geology (131) 378-391
This study identifies a thermal maturity anomaly within the downdip Mississippi Interior Salt Basin (MISB) of southern Mississippi, USA, through examination of bitumen reflectance data from Aptian-age strata (Sligo Formation, Pine Island Shale, James Limestone, and Rodessa Formation). U.S. Geological Survey (USGS) reconnaissance investigations conducted in 2011–2012 examined Aptian-age thermal...
Geochemical and modal data for igneous rocks associated with epithermal mineral deposits
Edward A. du Bray
2014, Data Series 875
The purposes of this report are to (1) present available geochemical and modal data for igneous rocks associated with epithermal mineral deposits and (2) to make those data widely and readily available for subsequent, more in-depth consideration and interpretation. Epithermal precious and base-metal deposits are commonly associated with subduction-related calc-alkaline...
Hydroclimate of the Spring Mountains and Sheep Range, Clark County, Nevada
Michael T. Moreo, Gabriel B. Senay, Alan L. Flint, Nancy A. Damar, Randell J. Laczniak, James Hurja
2014, Scientific Investigations Report 2014-5142
Precipitation, potential evapotranspiration, and actual evapotranspiration often are used to characterize the hydroclimate of a region. Quantification of these parameters in mountainous terrains is difficult because limited access often hampers the collection of representative ground data. To fulfill a need to characterize ecological zones in the Spring Mountains and Sheep...
