Status of pelagic prey fishes in Lake Michigan, 2017
David M. Warner, Ben Turscah, Dale Hanson, Timothy J. Desorcie, Timothy P. O’Brien, Patricia M. Dieter, Jason Smith
2018, Book chapter, Complied reports to the Great Lakes Fishery Commission of the annual bottom trawl and acoustics surveys, 2017
Acoustic surveys were conducted in late summer/early fall during the years 1992-1996 and 2001-2017 to estimate pelagic prey fish biomass in Lake Michigan. Midwater trawling during the surveys as well as target strength provided a measure of species and size composition of the fish community for use in scaling...
Evaluation of internet surveys for conducting statewide angler surveys in South Dakota
Larry M. Gigliotti, Kjetil Henderson
2018, Proceedings of the South Dakota Academy of Science (97) 35-50
Stakeholder information is critical for effective fisheries management. Agencies have traditionally used infrequent mail surveys to collect human dimensions data. Internet surveys provide cost savings, but are associated with caution due to data quality issues. To improve study validity, survey access can be controlled using email invitations, but because these...
Probabilistic mineral resource assessment of U.S. Territories of the Caribbean Basin and adjacent areas: Progress report
Lukas Zurcher, Floyd Gray, Stephen Ludington, Frederic H. Wilson, Greta J. Orris, Mark D. Cocker, Mark E. Gettings, Timothy Hayes
2018, Conference Paper, 15th Quadrennial International Association on the Genesis of Ore Deposits Symposium - Symposium Proceedings
The U.S. Geological Survey is partnering with the IberoAmerican Association of Geological and Mining Surveys (ASGMI) to conduct an assessment of undiscovered metallic and non-metallic resources in the Greater Antilles region. The assessment plans to provide science-based information on the geologic availability of these resources for development, land-use planning, and...
Yellowstone River Compact Commission sixty-seventh annual report 2018
Seth Davidson
2018, Report
No abstract available....
Digital 3D geologic framework of the Las Cruces area
Donald S. Sweetkind
2018, Book chapter, New Mexico Geological Society Fall Field Conference Guidebook – 69 Las Cruces Country III
No abstract available....
Development and utility of a gene transcription panel for desert bighorn sheep (Ovis canadensis nelsoni)
Lizabeth Bowen, Kathleen Longshore, Peregrine Wolff, Shannon C. Waters-Dynes, A. Keith Miles, Mike Cox, Sarah Bullock
2018, Conference Paper, Biennial symposium of the Northern Wild Sheep and Goat Council
Respiratory disease is a key factor impacting the success of the ongoing conservation and recovery of wild sheep populations (WAFWA 2017). Although the primary pathogens involved in the bighorn sheep pneumonia complex have been identified, the wide variability in herd response following infection is not well understood (Cassirer et al. 2018)....
A regional analysis of long-term gray and harbor seal stranding events
Katharine M. L. Jones, Michelle Staudinger
2018, Report
Strong indicators of species’ sensitivity, adaptive capacity, and overall vulnerability to climate change are provided by changes in phenology, the timing of recurring life events (Parmesan and Yohe, 2003). We possess poor information on climate induced shifts in phenology of marine organisms, especially top predators. The Gulf of Maine (GOM)...
The 3D elevation program
Jason M. Stoker, Vicki Lukas, Allyson L. Jason, Diane F. Eldridge, Larry J. Sugarbaker
2018, Book chapter, Digital elevation model technologies and applications : the DEM users manual
No abstract available....
A review of literature for gray and harbor seals
Gabrielle Calandrino, Daniel Pendleton, Michelle Staudinger
2018, Report
Climate change is impacting marine species, causing shifts in occurrence, distribution, and phenology, which can ultimately effect ecosystem structure and functioning (Parmesan & Yohe 2003; Burrows et al. 2011). The study of the timing of recurring biological events throughout an organism’s life is known as phenology (Parmesan & Yohe 2003)....
Validating ground-motion simulations on rough faults in complex 3D media
Robert Graves, Arben Pitarka
2018, Conference Paper, Proceedings of eleventh U.S. national conference on earthquake engineering
We utilize a two-step process to validate 0-4 Hz ground motion simulations using the 1989 Loma Prieta earthquake. In the first step we run multiple realizations using the Graves and Pitarka hybrid method as implemented on the SCEC Broadband Simulation Platform and compare these with near-fault (R < 40...
Climate change refugia
Toni Lyn Morelli, Connie Millar
2018, Report
Climate change is affecting the distribution, abundance, and persistence of species and ecosystems around the world. As natural resource managers are tasked with maintaining and protecting species and ecosystems from the effects of a changing climate, options for minimizing impacts are needed. Options for climate adaptation—the policy and management actions...
Airborne geophysical characterizationof geologic structure in a mountain headwater system, upper East River, Colorado
Burke J. Minsley, Lyndsay B. Ball
2018, Conference Paper
Geologic controls on groundwater flow, particularly in tectonically and topographically complex mountainous terrain, can be difficult to quantify without a detailed understanding of the regional subsurface geologic structure. This structure can influence the magnitude of groundwater flow through the mountain block, which in turn impacts groundwater composition and the flux...
Opportunities to enhance seismic demand parameters for future editions of the AS1170.4
Trevor Allen, Nico Luco
2018, Conference Paper
Geoscience Australia has recently released its 2018 National Seismic Hazard Assessment (NSHA18). Results from the NSHA18 indicate significantly lower seismic hazard across almost all Australian localities at the 1/500 annual exceedance probability level relative to the factors adopted for the current Australian Standard AS1170.4–2007 (R2018). These new hazard estimates, coupled...
Low-dose stimulation of growth of the harmful alga, Prymnesium parvum, by glyphosate and glyphosate-based herbicides
Brittanie L. Dabney, Reynaldo Patino
2018, Harmful Algae (80) 130-139
Glyphosate-based herbicides (GBH) are widely used around the globe. While generally toxic to phototrophs, organic phosphorus in glyphosate can become available to glyphosate-resistant phytoplankton and contribute to algal bloom development. Few studies have examined the effects of GBH on growth of eukaryotic microalgae and information for the toxic bloom-forming haptophyte,...
Crisis remote sensing during the 2018 lower East Rift Zone eruption of Kīlauea Volcano
Michael H. Zoeller, Matthew R. Patrick, Christina A. Neal
2018, Photogrammetric Engineering & Remote Sensing (84) 749-751
Kīlauea Volcano, Hawai‘i, is renowned as one of the most active and closely monitored volcanoes on Earth. Scores of seismometers and deformation sensors form an array across the volcano to detect subsurface magmatic activity, and ground observers track eruptions on the surface. In addition to this dense ground-based monitoring, remote...
Patch and landscape responses of bird abundance to fragmentation in agroecosystems of east-central Argentina
Francisco Vilella, N.C. Calamari, P.A. Mercuri
2018, Avian Conservation and Ecology (13)
Forest fragmentation in agroecosystems is linked to declines of avian species worldwide. Agriculture has greatly reduced native forest cover in east-central Argentina. Assessing the influence of fragmentation on forest bird populations is vital to inform reliable conservation and management strategies for the Espinal region of Argentina. We determined the relationships...
Seasonal surveillance confirms the range expansion of Aedes japonicus japonicas (Theobald) (Diptera: Culicidae) to the Hawaiian Islands of Oahu and Kauai
James Harwood, Jodi Fiorenzanoa, Elizabeth Gerardoa, Theodore Black, Jeomhee Hasty, Dennis Lapointe
2018, Journal of Asia-Pacific Entomology (21) 1366-1372
The Asian bush mosquito, Aedes japonicus japonicus (Theobald) was not known to occur in the Hawaii archipelago until it was identified on the island of Hawaii in 2003. This mosquito species remained undetected on the neighboring islands for 8 years before it was discovered at the Honolulu International Airport on Oahu...
Increasing temperature seasonality may overwhelm shifts in soil moisture to favor shrub grass dominance in Colorado Plateau drylands
Jennifer R. Gremer, Caitlin M. Andrews, Jodi R. Norris, Lisa P. Thomas, Seth M. Munson, Michael C. Duniway, John B. Bradford
2018, Oecologia (188) 1195-1207
Ecosystems in the southwestern U.S. are hotspots for climate change, and are predicted to experience continued warming and drying. In these water-limited systems, the balance between herbaceous and woody plant abundance impacts biodiversity and ecosystem processes, highlighting the need to understand how climate change will influence functional composition. However,...
Coseismic sackungen in the New Madrid seismic zone, USA
Jaime E. Delano, Ryan D. Gold, Richard W. Briggs, Randall W. Jibson
2018, Geophysical Research Letters (45) 13258-13268
High‐resolution lidar reveals newly recognized evidence of strong shaking in the New Madrid seismic zone in the central United States. We mapped concentrations of sackungen (ridgetop spreading features) on bluffs along the eastern Mississippi River valley in northwestern Tennessee that likely form or are reactivated during large earthquakes. These sackungen...
Taxonomic evaluation of the three “type” specimens of the fringe-footed shrew, Sorex fimbripes Bachman, 1837 (Mammalia: Soricidae) and recommended nomenclatural status of the name
Neal Woodman
2018, Proceedings of the Biological Society of Washington (131) 202-219
John Bachman (1837:391) described the “fringe-footed shrew,” Sorex fimbripes Bachman, 1837, in his landmark monograph on the North American Soricidae (Mammalia: Eulipotyphla), in which he recognized 13 uniquely New World species. Characters he attributed to S. fimbripes resulted in its being interpreted as a tiny, semi-aquatic species and contributed to...
Confirmation of diving and swimming behavior in the Sora (Porzana carolina)
David G. Krementz
2018, Wilson Journal of Ornithology (130) 778-780
We first observed Sora (Porzana carolina) swimming and diving under water while capturing them with hand nets at night. Since that time, we have observed the behavior several times and documented it with photos and video. Rails are among the most elusive birds. Despite living...
Remote sensing of river bathymetry: Evaluating a range of sensors, platforms, and algorithms on the upper Sacramento River, California, USA
Carl J. Legleiter, Lee R. Harrison
2018, Water Resources Research (55) 2142-2169
Remote sensing has become an increasingly viable tool for characterizing fluvial systems. In this study, we used field measurements from a 1.6 km reach of the upper Sacramento River, CA, to evaluate the potential of mapping water depths from a range of platforms, sensors, and depth retrieval methods. Field measurements...
Bat activity following repeated prescribed fire in the central Appalachians, USA
Lauren V. Austin, Alexander Silvis, Michael S. Muthersbaugh, Karen E. Powers, W. Mark Ford
2018, Fire Ecology (14)
BackgroundTo restore and manage fire-adapted forest communities in the central Appalachians, USA, land managers are now increasingly prioritizing use of prescribed fire. However, it is unclear how the reintroduction of fire following decades of suppression will affect bat communities, particularly where white-nose syndrome-related population declines of many cave-hibernating...
Extreme‐value geoelectric amplitude and polarization across the northeast United States
Jeffrey J. Love, Greg M. Lucas, Paul A. Bedrosian, Anna Kelbert
2018, Space Weather (17) 379-395
Maps are presented of extreme‐value geoelectric field amplitude and horizontal polarization for the Northeast United States. These maps are derived from geoelectric time series calculated for sites across the Northeast by frequency‐domain multiplication (time‐domain convolution) of 172 magnetotelluric impedance tensors, acquired during a survey, with decades‐long,...
Initial dispersal (1986-1987) of the invasive foraminifera Trochammina hadai Uchio in San Francisco Bay, California, USA
Mary McGann
2018, Micropaleontology (64) 365-378
A time series of three closely-spaced data sets are used to track the early expansion of the invasive Japanese benthic foraminifera Trochammina hadai in the southern portion of San Francisco Bay known as South Bay. The species initially appeared in 1983, comprising only 1.5% of the assemblage in one of...
