Does bioelectrical impedance analysis accurately estimate the condition of threatened and endangered desert fish species?
Kimberly L. Dibble, Micheal D. Yard, David L. Ward, Charles B. Yackulic
2017, Transactions of the American Fisheries Society (146) 888-902
Bioelectrical impedance analysis (BIA) is a nonlethal tool with which to estimate the physiological condition of animals that has potential value in research on endangered species. However, the effectiveness of BIA varies by species, the methodology continues to be refined, and incidental mortality rates are unknown. Under laboratory conditions we...
PeRL: A circum-Arctic Permafrost Region Pond and Lake database
Sina Muster, Kurt Roth, Moritz Langer, Stephan Lange, Fabio Cresto Aleina, Annett Bartsch, Anne Morgenstern, Guido Grosse, Benjamin M. Jones, A. B. K. Sannel, Ylva Sjoberg, Frank Gunther, Christian Andresen, Alexandra Veremeeva, Prajna R. Lindgren, Frederic Bouchard, Mark J. Lara, Daniel Fortier, Simon Charbonneau, Tarmo A. Virtanen, Gustaf Hugelius, J. Palmtag, Matthias B. Siewert, William J. Riley, Charles Koven, Julia Boike
2017, Earth System Science Data (9) 317-348
Ponds and lakes are abundant in Arctic permafrost lowlands. They play an important role in Arctic wetland ecosystems by regulating carbon, water, and energy fluxes and providing freshwater habitats. However, ponds, i.e., waterbodies with surface areas smaller than 1. 0 × 104 m2, have not been inventoried on global and regional scales. The Permafrost...
Challenges to oil spill assessment for seabirds in the deep ocean
J. Christopher Haney, Patrick G.R. Jodice, William Montevecchi, David C. Evers
2017, Archives of Environmental Contamination and Toxicology (73) 33-39
We synthesize impediments for evaluating effects to seabirds from open ocean hydrocarbon releases. Effects on seabirds from ship discharges, spills, and well blowouts often are poorly detected and monitored far from land. Regulatory regimes for ocean spills can result in monitoring efforts that are not entirely transparent. We illustrate how...
Integration of vegetation community spatial data into a prescribed fire planning process at Shenandoah National Park, Virginia (USA)
John A. Young, Carolyn G. Mahan, Melissa Forder
2017, Natural Areas Journal (37) 394-405
Many eastern forest communities depend on fire for regeneration or are enhanced by fire as a restoration practice. However, the use of prescribed fire in the mesic forested environments and the densely populated regions of the eastern United States has been limited. The objective of our research was to develop...
Numerical studies of depressurization-induced gas production from an interbedded marine turbidite gas hydrate reservoir model
Evgeniy Myshakin, Jeen-Shang Lin, Shun Uchida, Yongkoo Seol, Timothy S. Collett, Ray Boswell
2017, Conference Paper, Proceeding of the 9th International Conference on Gas Hydrates
The numerical simulation of thin hydrate-bearing sand layers interbedded with mud layers is investigated. In this model, the lowest hydrate layer occurs at the base of gas hydrate stability and overlies a thinly-interbedded saline aquifer. The predicted gas rates reach 6.25 MMscf/day (1.77 x 105 m3 /day) after 90 days...
Physical response of a back-barrier estuary to a post-tropical cyclone
Alexis Beudin, Neil Kamal Ganju, Zafer Defne, Alfredo Aretxabaleta
2017, Journal of Geophysical Research C: Oceans (122) 5888-5904
This paper presents a modeling investigation of the hydrodynamic and sediment transport response of Chincoteague Bay (VA/MD, USA) to Hurricane Sandy using the Coupled Ocean-Atmosphere-Wave-Sediment-Transport (COAWST) modeling system. Several simulation scenarios with different combinations of remote and local forces were conducted to identify the dominant physical processes. While 80% of...
Heat as a groundwater tracer in shallow and deep heterogeneous media: Analytical solution, spreadsheet tool, and field applications
Barret L. Kurylyk, Dylan J. Irvine, Sean K. Carey, Martin A. Briggs, Dale D. Werkema, Mariah Bonham
2017, Hydrological Processes (31) 2648-2661
Groundwater flow advects heat, and thus, the deviation of subsurface temperatures from an expected conduction‐dominated regime can be analysed to estimate vertical water fluxes. A number of analytical approaches have been proposed for using heat as a groundwater tracer, and these have typically assumed a homogeneous medium. However, heterogeneous thermal...
A proposal for amending administrative law to facilitate adaptive management
Robin K. Craig, J.B. Ruhl, Ellie Brown, Byron K. Williams
2017, Environmental Research Letters (12) 1-17
In this article we examine how federal agencies use adaptive management. In order for federal agencies to implement adaptive management more successfully, administrative law must adapt to adaptive management, and we propose changes in administrative law that will help to steer the current process out of a dead end. Adaptive...
Geomorphology of comet 67P/Churyumov–Gerasimenko
Samuel P. D. Birch, Y. Tang, A. G. Hayes, Randolph L. Kirk, D. Bodewitz, H. Campins, Y. Fernandez, R. de Freitas Bart, N. W. Kutsop, H. Sierks, J. M. Soderblom, S. W. Squyres, J.-B. Vincent
2017, Monthly Notices of the Royal Astronomical Society (469) S50-S67
We present a global geomorphological map of comet 67P/Churyumov–Gerasimenko (67P/C-G) using data acquired by the Rosetta Orbiter’s OSIRIS Narrow Angle Camera. The images used in our study were acquired between 2014 August and 2015 May, before 67P/C-G passed through perihelion. Imagery of the Southern hemisphere was included in our study, allowing us...
Unique genome organization of non-mammalian papillomaviruses provides insights into the evolution of viral early proteins
Koenraad Van Doorslaer, Valeria Ruoppolo, Annie Schmidt, Amelie Lescroel, Dennis Jongsomjit, Megan Elrod, Simona Kraberger, Daisy Stainton, Katie M. Dugger, Grant Ballard, David G. Ainley, Arvind Varsani
2017, Virus Evolution (3)
The family Papillomaviridae contains more than 320 papillomavirus types, with most having been identified as infecting skin and mucosal epithelium in mammalian hosts. To date, only nine non-mammalian papillomaviruses have been described from birds (n = 5), a fish (n = 1), a snake (n = 1), and turtles (n = 2). The identification of papillomaviruses in sauropsids and a...
Population characteristics and the influence of discharge on Bluehead Sucker and Flannelmouth Sucker
Zachary B. Klein, Matthew J. Breen, Michael C. Quist
2017, Copeia (105) 375-388
Rivers are among some of the most complex and important ecosystems in the world. Unfortunately, many fishes endemic to rivers have suffered declines in abundance and distribution suggesting that alterations to lotic environments have negatively influenced native fish populations. Of the 35 fishes native to the Colorado River basin (CRB),...
Geomagnetically induced currents: Science, engineering, and applications readiness
Antti Pulkkinen, E. Bernabeu, A. Thomson, A. Viljanen, R. Pirjola, D. Boteler, J. Eichner, P.J. Cilliers, D. Welling, N.P. Savani, R.S. Weigel, Jeffrey J. Love, Christopher Balch, C.M. Ngwira, G. Crowley, Adam Schultz, R. Kataoka, B. Anderson, D. Fugate, J.J. Simpson, M. MacAlester
2017, Space Weather (15) 828-856
This paper is the primary deliverable of the very first NASA Living With a Star Institute Working Group, Geomagnetically Induced Currents (GIC) Working Group. The paper provides a broad overview of the current status and future challenges pertaining to the science, engineering, and applications of the GIC problem. Science is...
Spatiotemporal analysis of changes in lode mining claims around the McDermitt Caldera, northern Nevada and southern Oregon
Joshua A. Coyan, Michael L. Zientek, Mark J. Mihalasky
2017, Natural Resources Research (26) 319-337
Resource managers and agencies involved with planning for future federal land needs are required to complete an assessment of and forecast for future land use every ten years. Predicting mining activities on federal lands is difficult as current regulations do not require disclosure of exploration results. In these cases, historic...
Gradients in Catostomid assemblages along a reservoir cascade
Leandro E. Miranda, Kevin R. Keretz, Chelsea R. Gilliland
2017, River Research and Applications (33) 983-990
Serial impoundment of major rivers leads to alterations of natural flow dynamics and disrupts longitudinal connectivity. Catostomid fishes (suckers, family Catostomidae) are typically found in riverine or backwater habitats yet are able to persist in impounded river systems. To the detriment of conservation, there is limited information about distribution of...
Diet composition of age-0 fishes in created habitats of the Lower Missouri River
Trevor A. Starks, James M. Long
2017, The American Midland Naturalist (178) 112-122
Channelization of the Missouri River has greatly reduced the availability of shallow water habitats used by many larval and juvenile fishes and contributed to imperilment of floodplain-dependent biota. Creation of small side channels, or chutes, is being used to restore shallow water habitat and reverse negative environmental effects associated with...
Fine particle retention within stream storage areas at base flow and in response to a storm event
J. D. Drummond, L. G. Larsen, R. González-Pinzón, A. I. Packman, Judson Harvey
2017, Water Resources Research (53) 5690-5705
Fine particles (1–100 µm), including particulate organic carbon (POC) and fine sediment, influence stream ecological functioning because they may contain or have a high affinity to sorb nitrogen and phosphorus. These particles are immobilized within stream storage areas, especially hyporheic sediments and benthic biofilms. However, fine particles are also known...
Estimating ages of Utah chubs by use of pectoral fin rays, otoliths, and scales
Kayla M Griffin, Zachary S. Beard, John M. Flinders, Michael C. Quist
2017, Western North American Naturalist (77) 189-194
Utah chub Gila atraria is native to the Upper Snake River system in Wyoming and Idaho and to the Lake Bonneville Basin in Utah and southeastern Idaho. However, the Utah chub has been introduced into many other waterbodies in the western United States, where it competes with ecologically and economically important species....
Estimating the number of recreational anglers for a given waterbody
Kevin L. Pope, Larkin A. Powell, Brian S. Harmon, Mark A. Pegg, Christopher J. Chizinski
2017, Fisheries Research (191) 69-75
Knowing how many anglers use a given body of water is paramount for understanding components of a fishery related to angling pressure and harvest, yet no study has attempted to provide an estimate of the population size of anglers for a given waterbody. Here, we use information from creel surveys...
An “EAR” on environmental surveillance and monitoring: A case study on the use of Exposure–Activity Ratios (EARs) to prioritize sites, chemicals, and bioactivities of concern in Great Lakes waters
Brett R. Blackwell, Gerald T. Ankley, Steven R. Corsi, Laura A. DeCicco, Kieth A. Houck, Richard S. Judson, Shibin Li, Matthew T. Martin, Elizabeth Murphy, Anthony L. Schroeder, Edwin R. Smith, Joe Swintek, Daniel L. Villeneuve
2017, Environmental Science & Technology (51) 8713-8724
Current environmental monitoring approaches focus primarily on chemical occurrence. However, based on concentration alone, it can be difficult to identify which compounds may be of toxicological concern and should be prioritized for further monitoring, in-depth testing, or management. This can be problematic because toxicological characterization is lacking for many emerging...
Population dynamics of brown trout (Salmo trutta) in Spruce Creek Pennsylvania: A quarter-century perspective
Gary D. Grossman, Robert F. Carline, Tyler Wagner
2017, Freshwater Biology (62) 1143-1154
We examined the relationship between density-independent and density-dependent factors on the demography of a dense, relatively unexploited population of brown trout in Spruce Creek Pennsylvania between 1985 and 2011.Individual PCAs of flow and temperature data elucidated groups of years with multiple high flow versus multiple low flow...
Short-term ecological consequences of collaborative restoration treatments in ponderosa pine forests of Colorado
Jenny S. Briggs, Paula J. Fornwalt, Jonas A. Feinstein
2017, Forest Ecology and Management (395) 69-80
Ecological restoration treatments are being implemented at an increasing rate in ponderosa pine and other dry conifer forests across the western United States, via the USDA Forest Service’s Collaborative Forest Landscape Restoration (CFLR) program. In this program, collaborative stakeholder groups work with National Forests (NFs) to adaptively implement and monitor...
Nitrogenase activity by biological soil crusts in cold sagebrush steppe ecosystems
Stacy G. Schwabedissen, Kathleen A. Lohse, Sasha C. Reed, Ken A. Aho, Timothy S. Magnuson
2017, Biogeochemistry (134) 57-76
In drylands worldwide, biological soil crusts (BSC) form a thin photosynthetic cover across landscapes, and provide vital benefits in terms of stabilizing soil and fixing nitrogen (N) and carbon (C). Numerous studies have examined the effects of climate and disturbance on BSC functions; however, few have characterized these responses in...
Use of spatial capture–recapture to estimate density of Andean bears in northern Ecuador
Santiago Molina, Angela K. Fuller, Dana J. Morin, J. Andrew Royle
2017, Ursus (28) 117-126
The Andean bear (Tremarctos ornatus) is the only extant species of bear in South America and is considered threatened across its range and endangered in Ecuador. Habitat loss and fragmentation is considered a critical threat to the species, and there is a lack of knowledge regarding its distribution and abundance....
Real-time geomagnetic monitoring for space weather-related applications: Opportunities and challenges
Jeffrey J. Love, Carol Finn
2017, Space Weather (15) 820-827
An examination is made of opportunities and challenges for enhancing global, real-time geomagnetic monitoring that would be beneficial for a variety of operational projects. This enhancement in geomagnetic monitoring can be attained by expanding the geographic distribution of magnetometer stations, improving the quality of magnetometer data, increasing acquisition sampling rates,...
A cosmopolitan late Ediacaran biotic assemblage: new fossils from Nevada and Namibia support a global biostratigraphic link
E. F. Smith, L. L. Nelson, S. M. Tweedt, H. Zeng, Jeremiah B. Workman
2017, Proceedings of the Royal Society B (284) 1-10
Owing to the lack of temporally well-constrained Ediacaran fossil localities containing overlapping biotic assemblages, it has remained uncertain if the latest Ediacaran (ca 550–541 Ma) assemblages reflect systematic biological turnover or environmental, taphonomic or biogeographic biases. Here, we report new latest Ediacaran fossil discoveries from the lower member of the Wood...
