Karst hydrogeology of Tuckaleechee Cove and the western Great Smoky Mountains, Tennessee and North Carolina
Benjamin Miller, Mike Bradley, Teresa L. Brown
2018, Book chapter, Geology at Every Scale: Field Excursions for the 2018 GSA Southeastern Section Meeting, Geological Society of America Field Guide 50
The geology of Great Smoky Mountains National Park (GRSM) in Tennessee and North Carolina is dominated by siliciclastics and metamorphic strata. However, in the western portion of GRSM, a series of carbonate fensters (windows) expose the Lower Ordovician–age section of the Knox Group, a series of dolomite and limestone units...
Comparison of a prepositioned areal electrofishing device and fixed underwater videography for sampling riverine fishes
Philip R. Branigan, Michael C. Quist, Bradley B. Shepard, Susan C. Ireland
2018, Western North American Naturalist (78) 65-75
Prepositioned areal electrofishing devices (PAEDs) are used to evaluate microhabitat use by fishes because they minimize fright biases associated with traditional electrofishing techniques (e.g., boat electrofishing). Similarly, fixed underwater videography (FUV) is commonly used to minimize the effect of observers on fish behavior. The specific objectives of this research were...
Message in a bottle: The story of drifting plastic in the eastern Mediterranean Sea
Galia Pasternak, Dov Zviely, Asaf Ariel, Ehud Spanier, Christine Ribic
2018, Waste Management (77) 67-77
The Mediterranean Sea is a closed basin with limited water exchange through the Strait of Gibraltar, and sites along its shores show the greatest densities of marine debris in the world. Plastic bottles, which are a growing concern due to high consumption of soft drinks and bottled water, constitute most of...
Insights from long-term ungrazed and grazed watersheds in a salt desert Colorado Plateau ecosystem
Michael C. Duniway, Erika L. Geiger, Tamera J. Minnick, Susan L. Phillips, Jayne Belnap
2018, Rangeland Ecology and Management (71) 492-505
Dryland ecosystems cover over 41% of the earth’s land surface, and living within these important ecosystems are approximately 2 billion people, a large proportion of whom are subsistence agropastoralists. Improper grazing in drylands can negatively impact ecosystem productivity, soil conservation, hydrologic processes, downstream water quantity and quality, and ultimately human health...
Spatial spectroscopic models for remote exploration
David R. Thompson, Alberto Candela, David Wettergreen, E. Noe Dobrea, Gregg A. Swayze, Roger N Clark, Rebecca Greenberger
2018, Astrobiology (18) 934-954
Ancient hydrothermal systems are a high-priority target for a future Mars sample return mission because they contain energy sources for microbes and can preserve organic materials (Farmer, 2000; MEPAG Next Decade Science Analysis Group, <a id="B36R" class="tab-link" href="https://www.liebertpub.com/doi/10.1089/ast.2017.1782#B36" data-tab="pane-pcw-references"...
Animal movement models for migratory individuals and groups
Mevin Hooten, Henry R. Scharf, Trevor J. Hefley, Aaron T. Pearse, Mitch D. Weegman
2018, Methods in Ecology and Evolution (9) 1692-1705
Animals often exhibit changes in their behaviour during migration. Telemetry data provide a way to observe geographic position of animals over time, but not necessarily changes in the dynamics of the movement process. Continuous‐time models allow for statistical predictions of the trajectory in the presence of measurement error and...
A revised Triassic stratigraphic framework for the Arctic Alaska Basin
Katherine J. Whidden, Julie A. Dumoulin, William A. Rouse
2018, AAPG Bulletin (102) 1171-1212
The Triassic Shublik Formation and the Triassic–Jurassic Otuk Formation are partially age-equivalent lithostratigraphic units that were deposited in the Arctic Alaska Basin (AAB). The Shublik Formation represents proximal deposition within the basin, with episodic siliciclastic input, whereas the Otuk Formation was deposited in the distal part of the basin, with...
Rearing performance of juvenile brown trout Salmo trutta fed a bioprocessed soybean meal diet with differing velocity regimes
Jill M. Voorhees, Michael Barnes, Steven R. Chipps, Michael Browne
2018, Open Journal of Animal Sciences (8) 303-328
This 121-day experiment evaluated the rearing performance of brown trout Salmo trutta fed one of two isonitrogenous and isocaloric diets (46% protein, 16% lipid) and reared at velocities of either 2.8 or 16.1 cm/s. Fishmeal was the primary protein source for the reference diet, which was compared to a bioprocessed...
Landbird population trends in mountain and historical parks of the North Coast and Cascades Network: 2005–2016 synthesis
Chris Ray, James F. Saracco, Mandy Holmgren, Robert L. Wilkerson, Rodney B. Siegel, Kurt J. Jenkins, Jason I. Ransom, Patricia J. Happe, John R. Boetsch, Mark H. Huff
2018, Natural Resource Report NPS/NCCN/NRR—2018/1673
Long-term monitoring of landbird populations within the National Park Service (NPS) North Coast and Cascades Inventory and Monitoring Network (NCCN) began in 2005, with the goal of detecting trends to inform the conservation and management of landbirds and their habitats. Here we use 2005–2016 data from over 3500 point-count stations...
An interim harvest strategy for Taiga Bean geese
Fred A. Johnson, Mikko Alhainen, Anthony D. Fox, Jesper Madsen
2018, Conference Paper, 2nd meeting of the AEWA European Goose Management International Working Group
In 2016 the AEWA European Goose Management International Working Group (EGM IWG) adopted document AEWA/EGM IWG 1.8 (Johnson et al. 2016), which contained initial elements of an Adaptive Harvest Management programme for Taiga Bean Geese. This report addresses a number of limitations with the population model presented in that document, and provides up-to-date population...
Simulation of less‐mobile porosity dynamics in contrasting sediment water interface porous media
Farzaneh MahmoodPoor Dehkordy, Martin A. Briggs, Frederick D. Day-Lewis, Amvrossios C. Bagtzoglou
2018, Hydrological Processes (32) 2030-2043
Considering heterogeneity in porous media pore size and connectivity is essential to predicting reactive solute transport across interfaces. However, exchange with less‐mobile porosity is rarely considered in surface water/groundwater recharge studies. Previous research indicates that a combination of pore‐fluid sampling and geoelectrical measurements can be used to quantify less‐mobile porosity...
Perspectives and future directions
Stephen DeStefano, Clint W. Boal
2018, Book chapter, Urban raptors: Ecology and conservation of birds of prey in cities
No abstract available....
Southeastern Deserts Bioregion
Matthew L. Brooks, Richard A. Minnich, John R. Matchett
Jan W. Van Wagtendonk, Neil G. Sugihara, Scott L. Stephens, Andrea E. Thode, Kevin E. Shaffer, Ann Fites-Kaufman, editor(s)
2018, Book chapter, Fire in California's Ecosystems
The Southeast Deserts Bioregion (desert bioregion) occupies the southeastern 27% of California (11,028,300 ha, 110,283 km2 or 27,251,610 ac) (Miles and Goudy 1997) (Map 18.1). The desert bioregion is within the basin and range geomorphic province of western North America, and includes two ecoregional provinces comprised of five ecological sections....
A multiscale natural community and species-level vulnerability assessment of the Gulf Coast, USA
Joshua S. Reece, Amanda Watson, Patricia (Soupy) Dalyander, C. Edwards, Laura Geselbracht, Megan K. LaPeyre, Blair Tirpak, John M. Tirpak, Mark Woodrey
2018, PLoS ONE (13)
Vulnerability assessments combine quantitative and qualitative evaluations of the exposure, sensitivity, and adaptive capacity of species or natural communities to current and future threats. When combined with the economic, ecological or evolutionary value of the species, vulnerability assessments quantify the relative risk to regional species and natural communities and can...
River response to large‐dam removal in a Mediterranean hydroclimatic setting: Carmel River, California, USA
Lee R. Harrison, Amy E. East, Douglas P. Smith, Joshua B. Logan, Rosealea Bond, Colin L. Nicol, Thomas H. Williams, David A. Boughton, Kaitlyn Chow, Lauren Luna
2018, Earth Surface Processes and Landforms (43) 3009-3021
Dam removal provides a valuable opportunity to measure the fluvial response to changes in both sediment supply and the processes that shape channel morphology. We present the first study of river response to the removal of a large (32‐m‐high) dam in a Mediterranean hydroclimatic setting, on the Carmel River, coastal...
Understanding and distinguishing reflectance measurements of solid bitumen and vitrinite using hydrous pyrolysis: Implications to petroleum assessment
Paul C. Hackley, Michael Lewan
2018, AAPG Bulletin (102) 1119-1140
Solid bitumen is a common organic component of thermally mature shales and typically is identified by embayment against euhedral mineral terminations and by groundmass textures. However, because these textures are not always present, solid bitumen can be easily misidentified as vitrinite. Hydrous-pyrolysis experiments (72 hr, 300°C–360°C) on shale and...
An evaluation of the toxicity of potassium chloride, active compound in the molluscicide potash, on salmonid fish and their forage base
Christine L. Densmore, Luke R. Iwanowicz, Anne P. Henderson, Vicki S. Blazer, Baileigh M. Reed-Grimmett, Lakyn R. Sanders
2018, Open-File Report 2018-1080
Potash, with the active ingredient potassium chloride (KCl) is a chemical that is currently being evaluated for potential use as a molluscicide to combat invasive zebra mussels and quagga mussels in Western United States waters. Although data available for other freshwater fishes indicate that recommended treatment levels of potash as...
Temporal and spatial variation in pharmaceutical concentrations in an urban river system
Emily E. Burns, Laura J. Carter, Dana W. Kolpin, Jane Thomas-Oates, Alistair B.A. Boxall
2018, Water Research (137) 72-85
Many studies have quantified pharmaceuticals in the environment, few however, have incorporated detailed temporal and spatial variability due to associated costs in terms of time and materials. Here, we target 33 physico-chemically diverse pharmaceuticals in a spatiotemporal exposure study into the occurrence of pharmaceuticals in the wastewater system and the...
Two-species occupancy modeling accounting for species misidentification and nondetection
Thierry Chambert, Evan H. Campbell Grant, David A. W. Miller, James D. Nichols, Kevin P. Mulder, Adrianne B. Brand
2018, Methods in Ecology and Evolution (9) 1468-1477
In occupancy studies, species misidentification can lead to false‐positive detections, which can cause severe estimator biases. Currently, all models that account for false‐positive errors only consider omnibus sources of false detections and are limited to single‐species occupancy.However, false detections for a given species often occur because of the misidentification...
Quantifying the visual-sensory landscape qualities that contribute to cultural ecosystem services using social media and LiDAR
Derek B. Van Berkel, Payam Tabrizian, Monica Dorning, Lindsey S. Smart, Doug Newcomb, Megan Mehaffey, Anne Neale, Ross K. Meentemeyer
2018, Ecosystem Services (31) 326-335
Landscapes are increasingly recognized for providing valuable cultural ecosystem services with numer- ous non-material benefits by serving as places of rest, relaxation, and inspiration that ultimately improve overall mental health and physical well-being. Maintaining and enhancing these valuable benefits through targeted management and conservation measures requires understanding the spatial and...
Decision making for mitigating wildlife diseases: From theory to practice for an emerging fungal pathogen of amphibians
Stefano Canessa, Claudio Bozzutto, Evan H. Campbell Grant, Sam S. Cruickshank, Matthew C. Fisher, Jacob C. Koella, Stefan Lotters, An Martel, Frank Pasmans, Ben C. Scheele, Annemarieke Spitzen-van der Sluijs, Sebastian Steinfartz, Benedikt R. Schmidt
2018, Journal of Applied Ecology (55) 1987-1996
Conservation science can be most effective in its decision‐support role when seeking answers to clearly formulated questions of direct management relevance. Emerging wildlife diseases, a driver of global biodiversity loss, illustrate the challenges of performing this role: in spite of considerable research, successful disease mitigation is uncommon. Decision analysis...
Climate and plant controls on soil organic matter in coastal wetlands
Michael J. Osland, Christopher A. Gabler, James B. Grace, Richard H. Day, Meagan L. McCoy, Jennie L. McLeod, Andrew S. From, Nicholas M. Enwright, Laura C. Feher, Camille L. Stagg, Stephen B. Hartley
2018, Global Change Biology (24) 5361-5379
Coastal wetlands are among the most productive and carbon‐rich ecosystems on Earth. Long‐term carbon storage in coastal wetlands occurs primarily belowground as soil organic matter (SOM). In addition to serving as a carbon sink, SOM influences wetland ecosystem structure, function, and stability. To anticipate and mitigate the effects of climate...
Influence of landscape structure, topography, and forest type on spatial variation in historical fire regimes, central Oregon, USA
Andrew Merschel, Emily K. Heyerdahl, Thomas A. Spies, Rachel A. Loehman
2018, Landscape Ecology (33) 1195-1209
Context In the interior Northwest, debate over restoring mixed-conifer forests after a century of fire exclusion is hampered by poor understanding of the pattern and causes of spatial variation in historical fire regimes. Objectives To identify the roles of topography, landscape structure, and forest type in driving spatial...
External quality assurance project report for the National Atmospheric Deposition Program’s National Trends Network and Mercury Deposition Network, 2015–16
Gregory A. Wetherbee, RoseAnn Martin
2018, Scientific Investigations Report 2018-5034
The U.S. Geological Survey Precipitation Chemistry Quality Assurance project operated five distinct programs to provide external quality assurance monitoring for the National Atmospheric Deposition Program’s (NADP) National Trends Network and Mercury Deposition Network during 2015–16. The National Trends Network programs include (1) a field audit program to evaluate sample contamination...
Application of a luminescence‐based sediment transport model
Harrison J. Gray, Gregory E. Tucker, Shannon A. Mahan
2018, Geophysical Research Letters (45) 6071-6080
Quantifying the transport history of sand is a challenging but important goal in geomorphology. In this paper, we take a simple idea that luminescence is bleached during transport and regenerates during storage, and use this as a basis to re‐envision luminescence as a sediment tracer. We apply a mathematical model...
