Quantifying fall migration of Ross's gulls (Rhodostethia rosea) past Point Barrow, Alaska
Mark Maftei, Shanti E. Davis, Brian D. Uher-Koch, Callie Gesmundo, R.S. Suydam, Mark L. Mallory
2014, Polar Biology (37) 1705-1710
The Ross’s gull (Rhodostethia rosea) is a poorly known seabird of the circumpolar Arctic. The only place in the world where Ross’s gulls are known to congregate is in the near-shore waters around Point Barrow, Alaska, where they undertake an annual passage in late fall. Ross’s gulls seen at Point...
U.S. response to a report of infectious salmon anemia virus in Western North America
Kevin H Amos, Lori Gustafson, Janet Warg, Janet Whaley, Maureen K. Purcell, Jill B. Rolland, James R. Winton, Kevin Snekvik, Theodore Meyers, Bruce Stewart, John Kerwin, Marilyn Blair, Joel Bader, Joy Evered
2014, Fisheries (39) 501-506
Federal, state, and tribal fishery managers, as well as the general public and their elected representatives in the United States, were concerned when infectious salmon anemia virus (ISAV) was suspected for the first time in free-ranging Pacific Salmon collected from the coastal areas of British Columbia, Canada. This article documents...
An objective and parsimonious approach for classifying natural flow regimes at a continental scale
Stacey A. Archfield, Jonathan G. Kennen, Daren M. Carlisle, David M. Wolock
2014, River Research and Applications (30) 1166-1183
Hydro-ecological stream classification-the process of grouping streams by similar hydrologic responses and, by extension, similar aquatic habitat-has been widely accepted and is considered by some to be one of the first steps towards developing ecological flow targets. A new classification of 1543 streamgauges in the contiguous USA is presented by...
Using mark-recapture distance sampling methods on line transect surveys
Louise M. Burt, David L. Borchers, Kurt J. Jenkins, Tigao A Marques
2014, Methods in Ecology and Evolution (5) 1180-1191
Mark–recapture distance sampling (MRDS) methods are widely used for density and abundance estimation when the conventional DS assumption of certain detection at distance zero fails, as they allow detection at distance zero to be estimated and incorporated into the overall probability of detection to better estimate density and...
Development of the Coastal Storm Modeling System (CoSMoS) for predicting the impact of storms on high-energy, active-margin coasts
Patrick L. Barnard, Maarten van Ormondt, Li H. Erikson, Jodi Eshleman, Cheryl J. Hapke, Peter Ruggiero, Peter Adams, Amy C. Foxgrover
2014, Natural Hazards (74) 1095-1125
The Coastal Storm Modeling System (CoSMoS) applies a predominantly deterministic framework to make detailed predictions (meter scale) of storm-induced coastal flooding, erosion, and cliff failures over large geographic scales (100s of kilometers). CoSMoS was developed for hindcast studies, operational applications (i.e., nowcasts and multiday forecasts), and future climate scenarios (i.e.,...
Attenuation and scattering tomography of the deep plumbing system of Mount St. Helens
Luca De Siena, Christine Thomas, Greg P. Waite, Seth C. Moran, Stefan Klemme
2014, Journal of Geophysical Research B: Solid Earth (119) 8223-8238
We present a combined 3-D P wave attenuation, 2-D S coda attenuation, and 3-D S coda scattering tomography model of fluid pathways, feeding systems, and sediments below Mount St. Helens (MSH) volcano between depths of 0 and 18 km. High-scattering and high-attenuation shallow anomalies are indicative of magma and fluid-rich zones within and below the volcanic...
Lattice Boltzmann methods applied to large-scale three-dimensional virtual cores constructed from digital optical borehole images of the karst carbonate Biscayne aquifer in southeastern Florida
Michael Sukop, Kevin J. Cunningham
2014, Water Resources Research 2015-1133
Digital optical borehole images at approximately 2 mm vertical resolution and borehole caliper data were used to create three-dimensional renderings of the distribution of (1) matrix porosity and (2) vuggy megaporosity for the karst carbonate Biscayne aquifer in southeastern Florida. The renderings based on the borehole data were used as...
Differential susceptibility in steelhead trout populations to an emergent MD strain of infectious hematopoietic necrosis virus
R. Breyta, Amelia Jones, Gael Kurath
2014, Diseases of Aquatic Organisms (112) 17-28
A significant emergence of trout-adapted MD subgroup infectious hematopoietic necrosis virus (IHNV) began in the coastal region of Washington State, USA, in 2007. This emergence event lasted until 2011 and caused both asymptomatic adult fish infection and symptomatic epidemic disease and mortality in juvenile fish. Incidence of virus during this...
Competition between introduced and native spiders (Araneae: Linyphiidae)
J.D. Houser, Howard S. Ginsberg, Elizabeth M. Jakob
2014, Biological Invasions (16) 2479-2488
The European sheet-web spider Linyphia triangularis (Araneae: Linyphiidae) has become established in Maine, where it often reaches very high densities. Two lines of evidence from previous work suggest that L. triangularis affects populations of the native linyphiid spider Frontinella communis. First, F. communis individuals are relatively scarce in both forest...
Confocal microscopy as a useful approach to describe gill rakers of Asian species of carp and native filter-feeding fishes of the upper Mississippi River system
Liza R. Walleser, D.R. Howard, Mark B. Sandheinrich, Mark P. Gaikowski, Jon J. Amberg
2014, Journal of Fish Biology (85) 1777-1784
To better understand potential diet overlap among exotic Asian species of carp and native species of filter-feeding fishes of the upper Mississippi River system, microscopy was used to document morphological differences in the gill rakers. Analysing samples first with light microscopy and subsequently with confocal microscopy, the three-dimensional structure of...
An 8700 year paleoclimate reconstruction from the southern Maya lowlands
David B. Wahl, Roger Byrne, Lysanna Anderson
2014, Quaternary Science Reviews (103) 19-25
Analysis of a sediment core from Lago Puerto Arturo, a closed basin lake in northern Peten, Guatemala, has provided an ∼8700 cal year record of climate change and human activity in the southern Maya lowlands. Stable isotope, magnetic susceptibility, and pollen analyses were used to reconstruct environmental change in the region. Results...
La Niña diversity and Northwest Indian Ocean Rim teleconnections
Andrew Hoell, Christopher C. Funk, Mathew Barlow
2014, Climate Dynamics (43) 2707-2724
The differences in tropical Pacific sea surface temperature (SST) expressions of El Niño-Southern Oscillation (ENSO) events of the same phase have been linked with different global atmospheric circulation patterns. This study examines the dynamical forcing of precipitation during October–December (OND) and March–May (MAM) over East Africa and during December–March (DJFM)...
Guiding out-migrating juvenile sea lamprey (Petromyzon marinus) with pulsed direct current
Nicholas S. Johnson, Scott M. Miehls
2014, River Research and Applications (30) 1146-1156
Non‐physical stimuli can deter or guide fish without affecting water flow or navigation and therefore have been investigated to improve fish passage at anthropogenic barriers and to control movement of invasive fish. Upstream fish migration can be blocked or guided without physical structure by electrifying the water, but directional downstream...
Geological controls on the occurrence of gas hydrate from core, downhole log, and seismic data in the Shenhu area, South China Sea
Myung W. Lee, Xiujuan Wang, Timothy S. Collett, Shengxiong Yang, Yiqun Guo, Shiguo Wu
2014, Marine Geology (357) 272-292
Multi-channel seismic reflection data, well logs, and recovered sediment cores have been used in this study to characterize the geologic controls on the occurrence of gas hydrate in the Shenhu area of the South China Sea. The concept of the "gas hydrate petroleum system" has allowed for the systematic analysis...
Reply to: Turner, R.E., 2014. Discussion of: Olea, R.A. and Coleman, J.L., Jr., 2014. A synoptic examination of causes of land loss in southern Louisiana as related to the exploitation of subsurface geologic resources, Journal of Coastal Research, 30(5), 1025–1044; Journal of Coastal Research, 30(6), 1330–1334.
Ricardo A. Olea, James L. Coleman
2014, Journal of Coastal Research (30) 1335-1337
To a large extent, geology is a science of solving inverse problems based on some data and scientific principles. Solutions to these types of problems are not unique, especially when using different data, invoking different principles, or both. It is not surprising that the discussant and we have reached different...
Reducing risk from lahar hazards: Concepts, case studies, and roles for scientists
Thomas C. Pierson, Nathan J. Wood, Carolyn L. Driedger
2014, Journal of Applied Volcanology (3) 1-25
Lahars are rapid flows of mud-rock slurries that can occur without warning and catastrophically impact areas more than 100 km downstream of source volcanoes. Strategies to mitigate the potential for damage or loss from lahars fall into four basic categories: (1) avoidance of lahar hazards through land-use planning; (2) modification...
Wave-driven sediment mobilization on a storm-controlled continental shelf (Northwest Iberia)
Ferdinand Oberle, Curt D. Storlazzi, Till Hanebuth
2014, Journal of Marine Systems (139) 362-372
Seafloor sediment mobilization on the inner Northwest Iberian continental shelf is caused largely by ocean surface waves. The temporal and spatial variability in the wave height, wave period, and wave direction has a profound effect on local sediment mobilization, leading to distinct sediment mobilization scenarios. Six grain-size specific sediment mobilization...
Beyond reducing fire hazard: fuel treatment impacts on overstory tree survival
Brandon M. Collins, Adrian J. Das, John J. Battles, Danny L. Fry, Kevin Krasnow, Scott L. Stephens
2014, Ecological Applications (24) 1879-1886
Fuel treatment implementation in dry forest types throughout the western United States is likely to increase in pace and scale in response to increasing incidence of large wildfires. While it is clear that properly implemented fuel treatments are effective at reducing hazardous fire potential, there are ancillary ecological effects that...
A sub-national scale geospatial analysis of diamond deposit lootability: the case of the Central African Republic
Katherine C. Malpeli, Peter G. Chirico
2014, The Extractive Industries and Society (1) 249-259
The Central African Republic (CAR), a country with rich diamond deposits and a tumultuous political history, experienced a government takeover by the Seleka rebel coalition in 2013. It is within this context that we developed and implemented a geospatial approach for assessing the lootability of high value-to-weight resource deposits, using...
Population viability of Pediocactus brady (Cactaceae) in a changing climate
Daniel F. Shryock, Todd C. Esque, Lee Huges
2014, American Journal of Botany (101) 1944-1953
• Premise of the study: A key question concerns the vulnerability of desert species adapted to harsh, variable climates to future climate change. Evaluating this requires coupling long-term demographic models with information on past and projected future climates. We investigated climatic drivers of population growth using a 22-yr demographic model for Pediocactus bradyi,...
A legacy of divergent fishery management regimes and the resilience of rainbow and cutthroat trout populations in Lake Crescent, Olympic National Park, Washington
Samuel J. Brenkman, Jeffrey J. Duda, Philip R. Kennedy, Bruce M. Baker
2014, Northwest Science (88) 280-304
As a means to increase visitation, early fisheries management in the National Park Service (NPS) promoted sport harvest and hatchery supplementation. Today, NPS management objectives focus on the preservation of native fish. We summarized management regimes of Olympic National Park's Lake Crescent, which included decades of liberal sport harvest and...
Prevalence of the amphibian chytrid fungus (Batrachochytrium dendrobatidis) at Buenos Aires National Wildlife Refuge, Arizona, USA
Brent H. Sigafus, Blake R. Hossack, Erin L. Muths, Cecil R. Schwalbe
2014, Herpetological Review (45) 41-42
Information on disease presence can be of use to natural resource managers, especially in areas supporting threatened and endangered species that occur coincidentally with species that are suspected vectors for disease. Ad hoc reports may be of limited utility (Muths et al. 2009), but a general sense of pathogen presence...
Does lake size matter? Combining morphology and process modeling to examine the contribution of lake classes to population-scale processes
Luke A. Winslow, Jordan S. Read, Paul C. Hanson, Emily H. Stanley
2014, Inland Waters (5) 7-14
With lake abundances in the thousands to millions, creating an intuitive understanding of the distribution of morphology and processes in lakes is challenging. To improve researchers’ understanding of large-scale lake processes, we developed a parsimonious mathematical model based on the Pareto distribution to describe the distribution of lake morphology (area,...
On-orbit performance of the Landsat 8 Operational Land Imager
Esad Micijevic, Kelly Vanderwerff, Pat Scaramuzza, Ron Morfitt, Julia A. Barsi, Raviv Levy
2014, Conference Paper, Proc. SPIE 9218, Earth Observing Systems XIX
The Landsat 8 satellite was launched on February 11, 2013, to systematically collect multispectral images for detection and quantitative analysis of changes on the Earth’s surface. The collected data are stored at the U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center and continue the longest archive of...
Factors influencing nest survival and productivity of Red-throated Loons (Gavia stellata) in Alaska
Daniel Rizzolo, Joel A. Schmutz, Sarah E. McCloskey, Thomas F. Fondell
2014, The Condor (116) 574-587
Red-throated Loon (Gavia stellata) numbers in Alaska have fluctuated dramatically over the past 3 decades; however, the demographic processes contributing to these population dynamics are poorly understood. To examine spatial and temporal variation in productivity, we estimated breeding parameters at 5 sites in Alaska: at Cape Espenberg and the Copper...
