Isotopic structure of Lake Whitefish in Lake Huron: Evidence for regional and local populations based on resource use
Rebecca L. Eberts, Bjorn Wissel, Gavin L. Simpson, Stephen S. Crawford, Wendylee Stott, Robert H. Hanner, Richard G. Manzon, Joanna Y. Wilson, Douglas R. Boreham, Christopher M. Somers
2017, North American Journal of Fisheries Management (37) 133-148
Lake Whitefish Coregonus clupeaformis is the most commercially valuable species in Lake Huron. The fishery for this species has historically been managed based on 25 management units (17 in Canada, 8 in the USA). However, congruence between the contemporary population structure of Lake Whitefish and management units is poorly understood....
A comparison of honey bee-collected pollen from working agricultural lands using light microscopy and ITS metabarcoding
Matthew Smart, Robert S. Cornman, Deborah D. Iwanowicz, Margaret McDermott-Kubeczko, Jeff S Pettis, Marla S Spivak, Clint Otto
2017, Environmental Entomology (46) 38-49
Taxonomic identification of pollen has historically been accomplished via light microscopy but requires specialized knowledge and reference collections, particularly when identification to lower taxonomic levels is necessary. Recently, next-generation sequencing technology has been used as a cost-effective alternative for identifying bee-collected pollen; however, this novel approach has not been tested...
Uranium delivery and uptake in a montane wetland, north-central Colorado, USA
R. Randall Schumann, Robert A. Zielinski, James K. Otton, Michael P. Pantea, William H. Orem
2017, Applied Geochemistry (78) 363-379
Comprehensive sampling of peat, underlying lakebed sediments, and coexisting waters of a naturally uraniferous montane wetland are combined with hydrologic measurements to define the important controls on uranium (U) supply and uptake. The major source of U to the wetland is groundwater flowing through locally fractured and faulted granite gneiss...
Evaluation of diffuse and preferential flow pathways of infiltratedprecipitation and irrigation using oxygen and hydrogen isotopes
Bin Ma, Xing Liang, Shaohua Liu, Menggui Jin, John R. Nimmo, Jingxin Li
2017, Hydrogeology Journal (25) 675-688
Subsurface-water flow pathways in three different land-use areas (non-irrigated grassland, poplar forest, and irrigated arable land) in the central North China Plain were investigated using oxygen (18O) and hydrogen (2H) isotopes in samples of precipitation, soils, and groundwater. Soil water in the top 10 cm was significantly affected by both evaporation...
Continued geophysical logging near the GMH Electronics National Priorities List Superfund site near Roxboro, North Carolina
Dominick J. Antolino, Melinda J. Chapman
2017, Data Series 1022
The U.S. Geological Survey South Atlantic Water Science Center collected borehole geophysical logs and images and continuous water-level data near the GMH Electronics National Priorities List Superfund site near Roxboro, North Carolina, during December 2012 through July 2015. Previous work by the U.S. Geological Survey South Atlantic Water Science Center...
Predicting cyanobacterial abundance, microcystin, and geosmin in a eutrophic drinking-water reservoir using a 14-year dataset
Ted D. Harris, Jennifer L. Graham
2017, Lake and Reservoir Management
Cyanobacterial blooms degrade water quality in drinking water supply reservoirs by producing toxic and taste-and-odor causing secondary metabolites, which ultimately cause public health concerns and lead to increased treatment costs for water utilities. There have been numerous attempts to create models that predict cyanobacteria and their secondary metabolites, most using...
Simulated mussel mortality thresholds as a function of mussel biomass and nutrient loading
Jeremy S. Bril, Kathryn Langenfeld, Craig L. Just, Scott N. Spak, Teresa Newton
2017, PeerJ (5)
A freshwater “mussel mortality threshold” was explored as a function of porewater ammonium (NH4+) concentration, mussel biomass, and total nitrogen (N) utilizing a numerical model calibrated with data from mesocosms with and without mussels. A mortality threshold of 2 mg-N L−1 porewater NH4+ was selected based on a study that...
Susceptibility and antibody response of the laboratory model zebra finch (Taeniopygia guttata) to West Nile Virus
Erik K. Hofmeister, Melissa Lund, Valerie I. Shearn-Bochsler, Christopher N. Balakrishnan
2017, PLoS ONE (12)
Since the introduction of West Nile virus (WNV) into North America in 1999 a number of passerine bird species have been found to play a role in the amplification of the virus. Arbovirus surveillance, observational studies and experimental studies have implicated passerine birds (songbirds, e.g., crows, American robins, house sparrows,...
A refined electrofishing technique for collecting Silver Carp: Implications for management
Wesley W. Bouska, David C. Glover, Kristen L. Bouska, James E. Garvey
2017, North American Journal of Fisheries Management (37) 101-107
Detecting nuisance species at low abundance or in newly established areas is critical to developing pest management strategies. Due to their sensitivity to disturbance and erratic jumping behavior, Silver Carp Hypophthalmichthys molitrix can be difficult to collect with traditional sampling methods. We compared catch per unit effort (CPUE) of all...
Prevalence and distribution of Wellfleet Bay virus exposure in the Common Eider (Somateria mollissima)
Jennifer R. Ballard, Randall M. Mickley, Samantha E.J. Gibbs, Chris P. Dwyer, Catherine Soos, N. Jane Harms, H. Grant Gilchrist, Jeffrey S. Hall, J. Christian Franson, G. Randy Milton, Glen Parsons, Brad Allen, Jean-Francois Giroux, Stephane Lair, Daniel G. Mead, John R. Fischer
2017, Journal of Wildlife Diseases (53) 81-90
Between 1998 and 2014, recurrent mortality events were reported in the Dresser's subspecies of the Common Eider (Somateria mollissima dresseri) on Cape Cod, Massachusetts, USA near Wellfleet Harbor. The early die-offs were attributed to parasitism and emaciation, but beginning in 2006 a suite of distinct lesions was observed concomitant with...
Climatic controls on the global distribution, abundance, and species richness of mangrove forests
Michael J. Osland, Laura C. Feher, Kereen Griffith, Kyle C. Cavanaugh, Nicholas M. Enwright, Richard H. Day, Camille L. Stagg, Ken W. Krauss, Rebecca J. Howard, James B. Grace, Kerrylee Rogers
2017, Ecological Monographs (87) 341-359
Mangrove forests are highly productive tidal saline wetland ecosystems found along sheltered tropical and subtropical coasts. Ecologists have long assumed that climatic drivers (i.e., temperature and rainfall regimes) govern the global distribution, structure, and function of mangrove forests. However, data constraints have hindered the quantification of direct climate-mangrove linkages in...
Spatial and temporal patterns of dissolved organic matter quantity and quality in the Mississippi River Basin, 1997–2013
Sarah M. Stackpoole, Edward G. Stets, David W. Clow, Douglas A. Burns, George R. Aiken, Brent T. Aulenbach, Irena F. Creed, Robert M. Hirsch, Hjalmar Laudon, Brian Pellerin, Robert G. Striegl
2017, Hydrological Processes (31) 902-915
Recent studies have found insignificant or decreasing trends in time-series dissolved organic carbon (DOC) datasets, questioning the assumption that long-term DOC concentrations in surface waters are increasing in response to anthropogenic forcing, including climate change, land use, and atmospheric acid deposition. We used the weighted regressions on time, discharge, and...
Shallow water benthic imaging and substrate characterization using recreational-grade sidescan-sonar
Daniel D. Buscombe
2017, Environmental Modelling and Software 1-18
In recent years, lightweight, inexpensive, vessel-mounted ‘recreational grade’ sonar systems have rapidly grown in popularity among aquatic scientists, for swath imaging of benthic substrates. To promote an ongoing ‘democratization’ of acoustical imaging of shallow water environments, methods to carry out geometric and radiometric correction and georectification of sonar echograms are...
Estimating the settling velocity of bioclastic sediment using common grain-size analysis techniques
Michael V. W. Cuttler, Ryan J. Lowe, James L. Falter, Daniel D. Buscombe
2017, Sedimentology (64) 987-1004
Most techniques for estimating settling velocities of natural particles have been developed for siliciclastic sediments. Therefore, to understand how these techniques apply to bioclastic environments, measured settling velocities of bioclastic sedimentary deposits sampled from a nearshore fringing reef in Western Australia were compared with settling velocities calculated using results from...
Pinyon and juniper encroachment into sagebrush ecosystems impacts distribution and survival of greater sage-grouse
Peter S. Coates, Brian G. Prochazka, Mark A. Ricca, K. Benjamin Gustafson, Pilar T. Ziegler, Michael L. Casazza
2017, Rangeland Ecology and Management (70) 25-38
In sagebrush (Artemisia spp.) ecosystems, encroachment of pinyon (Pinus spp.) and juniper (Juniperus spp.; hereafter, “pinyon-juniper”) trees has increased dramatically since European settlement. Understanding the impacts of this encroachment on behavioral decisions, distributions, and population dynamics of greater sage-grouse (Centrocercus urophasianus) and other sagebrush obligate species could help benefit sagebrush...
Fitful and protracted magma assembly leading to a giant eruption, Youngest Toba Tuff, Indonesia
Mary R. Reid, Jorge A. Vazquez
2017, Geochemistry, Geophysics, Geosystems (18) 156-177
The paroxysmal eruption of the 74 ka Youngest Toba Tuff (YTT) of northern Sumatra produced an extraordinary 2800 km3 of non-welded to densely welded ignimbrite and co-ignimbrite ash-fall. We report insights into the duration of YTT magma assembly obtained from ion microprobe U-Th and U-Pb dates, including continuous age spectra...
Forest restoration at Redwood National Park: Exploring prescribed fire alternatives to second-growth management: A case study
Eamon Engber, Jason Teraoka, Phillip J. van Mantgem
2017, Conference Paper, Proceedings of the Coast Redwood Science Symposium
Almost half of Redwood National Park is comprised of second-growth forests characterized by high stand density, deficient redwood composition, and low understory biodiversity. Typical structure of young redwood stands impedes the recovery of old-growth conditions, such as dominance of redwood (Sequoia sempervirens (D. Don) Endl.), distinct canopy layers and diverse...
Engaging the user community for advancing societal applications of the Surface Water Ocean Topography mission
Faisal Hossain, Margaret Srinivasan, Craig Peterson, Alice Andral, Ed Beighley, Eric Anderson, Rashied Amini, Charon Birkett, David M. Bjerklie, Cheryl Ann Blain, Selma Cherchali, Cedric H. David, Bradley D. Doorn, Jorge Escurra, Lee-Lueng Fu, Chris Frans, John W. Fulton, Subhrendu Gangopadhyay, Subimal Ghosh, Colin Gleason, Marielle Gosset, Jessica Hausman, Gregg Jacobs, John Jones, Yasir Kaheil, Benoit Laignel, Patrick Le Moigne, Li Li, Fabien Lefevre, Mason Jr., Amita Mehta, Abhijit Mukherjee, Anthony Nguy-Robertson, Sophie Ricci, Adrien Paris, Tamlin Pavelsky, Nicolas Picot, Guy Schumann, Sudhir Shrestha, Pierre-Yves Le Traon, Eric Trehubenko
2017, Bulletin of the American Meteorological Society (November 2017) 285-290
Scheduled for launch in 2021, the Surface Water and Ocean Topography (SWOT) mission will be a truly unique mission that will provide high-temporal-frequency maps of surface water extents and elevation variations of global water bodies (lakes/reservoirs, rivers, estuaries, oceans, and sea ice) at higher spatial resolution than is available with...
No substitute for survival: Perturbation analyses using a Golden Eagle population model reveal limits to managing for take
Jason D. Tack, Barry R. Noon, Zachary H. Bowen, Lauren Strybos, Bradley C. Fedy
2017, Journal of Raptor Research (51) 258-272
Conserving populations of long-lived birds of prey, characterized by a slow life-history (e.g., high survival and low reproductive output), requires a thorough understanding of how variation in their vital rates differentially affects population growth. Stochastic population modeling provides a framework for exploring variation in complex life histories to better understand...
Molecular detection of avian influenza virus from sediment samples in waterfowl habitats on the Delmarva Peninsula, United States
Christine L. Densmore, Deborah D. Iwanowicz, Christopher Ottinger, Larry J. Hindman, Amanda Bessler, Luke R. Iwanowicz, Diann J. Prosser, Matt Whitbeck, Cindy P. Driscoll
2017, Avian Diseases (61) 520-525
Avian influenza viruses (AIV) affect many species of birds including waterfowl and may persist in sediment in aquatic habitats. Sediment samples were collected from two areas representative of prime migration and overwintering waterfowl habitat in Dorchester County, Maryland in the fall and winter of 2013–2014. Samples were screened for the...
Unifying population and landscape ecology with spatial capture-recapture
J. Andrew Royle, Angela K. Fuller, Christopher Sutherland
2017, Ecography (41) 444-456
Spatial heterogeneity in the environment induces variation in population demographic rates and dispersal patterns, which result in spatio‐temporal variation in density and gene flow. Unfortunately, applying theory to learn about the role of spatial structure on populations has been hindered by the lack of mechanistic spatial models and inability to...
Synthesis
Larry D. Hinzman, Peter Outridge, James M. Gamble, Lyman K. Thorsteinson, Sarah F. Trainor, John E. Walsh, Alexander Klepikov
2017, Book chapter, Adaptation actions for a changing arctic: Perspectives from the Bering Chukchi-Beaufort Region
The goal of this report is to examine changes in the current environment and living conditions of the coastal and tundra communities of northwestern Canada, northern Alaska, and the northern Far East of Russia – the Bering-Chukchi-Beaufort (BCB) region – and to understand how people are coping and adapting to...
Geophysical expression of buried range-front embayment structure: Great Sand Dunes National Park, Rio Grande rift, Colorado
Benjamin J. Drenth, V. J. Grauch, Chester A. Ruleman, Judith A Schenk
2017, Geosphere (13) 974-990
Great Sand Dunes National Park and Preserve (GRSA, Colorado) lies along the eastern margin of the San Luis Basin and the tectonically active Sangre de Cristo fault system that are part of the northern Rio Grande rift. GRSA lies within a prominent embayment in the range front where two separate...
Trends and sources of PAHs to urban lakes and streams
Peter C. Van Metre, Barbara Mahler
2017, Lakeline (37) 8-12
Over the past few decades, concentrations of polycyclic aromatic hydrocarbons (PAHs) have been increasing in the sediments of many U.S. urban lakes and streams. These upward trends contrast those of legacy pollutants, such as lead, PCBs, and DDT, which were restricted or banned in the 1970s. Trends of these legacy...
Growth of coast redwood and Douglas-fir following thinning in second-growth forests at Redwood National Park and Headwaters Forest Reserve
Phillip J. van Mantgem, Jason R. Teraoka, David H. LaFever, Laura Lalemand
2017, Conference Paper, Coast redwood science symposium—2016: Past successes and future direction. Proceedings of a workshop. Gen. Tech. Rep. PSW-GTR-258
Managers of second-growth forests at Redwood National Park and the Bureau of Land Management’s Headwaters Forest Reserve encourage the development of late seral forest characteristics using mechanical thinning, where competing vegetation is removed to promote growth of residual trees. Yet the ability to quantify and reliably predict outcomes of treatments...
