Effect of substrate size on sympatric sand darter benthic habitat preferences
Patricia A. Thompson, Stuart A. Welsh, Austin A. Rizzo, Dustin M. Smith
2017, Journal of Freshwater Ecology (32) 455-465
The western sand darter, Ammocrypta clara, and the eastern sand darter, A. pellucida, are sand-dwelling fishes that have undergone range-wide population declines, presumably owing to habitat loss. Habitat use studies have been conducted for the eastern sand darter, but literature on the western sand darter remains sparse. To evaluate substrate...
Cessation of oil exposure in harlequin ducks after the Exxon Valdez oil spill: Cytochrome P4501A biomarker evidence
Daniel Esler, Brenda E. Ballachey, Lizabeth Bowen, A. Keith Miles, Rian D. Dickson, John D. Henderson
2017, Environmental Toxicology and Chemistry (36) 1294-1300
The authors quantified hepatic hydrocarbon-inducible cytochrome P4501A (CYP1A) expression, as ethoxyresorufin-O-deethylase (EROD) activity, in wintering harlequin ducks (Histrionicus histrionicus) captured in Prince William Sound, Alaska (USA), during 2011, 2013, and 2014 (22–25 yr following the 1989 Exxon Valdez oil spill). Average EROD activity was compared between birds from areas oiled...
Cosmogenic nuclide age estimate for Laurentide Ice Sheet recession from the terminal moraine, New Jersey, USA, and constraints on latest Pleistocene ice sheet history
Lee B. Corbett, Paul R. Bierman, Byron D. Stone, Marc W. Caffee, Patrick L. Larsen
2017, Quaternary Research (87) 482-498
The time at which the Laurentide Ice Sheet reached its maximum extent and subsequently retreated from its terminal moraine in New Jersey has been constrained by bracketing radiocarbon ages on preglacial and postglacial sediments. Here, we present measurements of in situ produced 10Be and 26Al in 16 quartz-bearing...
Microbial formation of labile organic carbon in Antarctic glacial environments
H.J. Smith, R. Foster, D.M. McKnight, John T. Lisle, S. Littmann, M.M.M. Kuypers, C.M. Foreman
2017, Nature Geoscience (10) 356-359
Roughly six petagrams of organic carbon are stored within ice worldwide. This organic carbon is thought to be of old age and highly bioavailable. Along with storage of ancient and new atmospherically deposited organic carbon, microorganisms may contribute substantially to the glacial organic carbon pool. Models of glacial microbial carbon...
Advancing coastal ocean modelling, analysis, and prediction for the US Integrated Ocean Observing System
John L. Wilkin, Leslie Rosenfeld, Arthur Allen, Rebecca Baltes, Antonio Baptista, Ruoying He, Patrick Hogan, Alexander Kurapov, Avichal Mehra, Josie Quintrell, David Schwab, Richard P. Signell, Jane Smith
2017, Journal of Operational Oceanography (10) 115-126
This paper outlines strategies that would advance coastal ocean modelling, analysis and prediction as a complement to the observing and data management activities of the coastal components of the US Integrated Ocean Observing System (IOOS®) and the Global Ocean Observing System (GOOS). The views presented are the consensus of a...
PRISM Software: Processing and Review Interface for Strong‐Motion Data
Jeanne M. Jones, Erol Kalkan, Christopher D. Stephens, Peter Ng
2017, Seismological Research Letters (88) 851-866
A continually increasing number of high‐quality digital strong‐motion records from stations of the National Strong Motion Project (NSMP) of the U.S. Geological Survey, as well as data from regional seismic networks within the United States, calls for automated processing of strong‐motion records with human review limited to selected significant or...
Disturbance of a rare seabird by ship-based tourism in a marine protected area
Timothy K. Marcella, Scott M. Gende, Daniel D. Roby, Arthur Allignol
2017, PLoS ONE (12) 1-23
Managers of marine protected areas (MPAs) must often seek ways to allow for visitation while minimizing impacts to the resources they are intended to protect. Using shipboard observers, we quantified the “zone of disturbance” for Kittlitz’s and marbled murrelets (Brachyramphus brevirostris and B. marmoratus) exposed to large cruise ships...
Diagenetic silica enrichment and late-stage groundwater activity in Gale crater, Mars
Jens Frydenvang, Patrick J. Gasda, Joel A. Hurowitz, John P. Grotzinger, Roger C. Wiens, Horton E. Newsom, Ken S. Edgett, Jessica Watkins, John C. Bridges, Sylvestre Maurice, Martin R. Fisk, Jeffrey R. Johnson, William Rapin, Nathan Stein, Sam M. Clegg, S. P. Schwenzer, C. Bedford, P. Edwards, Nicolas Mangold, Agnes Cousin, Ryan B. Anderson, Valerie Payre, David Vaniman, David Blake, Nina L. Lanza, Sanjeev Gupta, Jason K. Van Beek, Violaine Sautter, Pierre-Yves Meslin, Melissa Rice, Ralf Milliken, Ralf Gellert, Lucy Thompson, Ben C. Clark, Dawn Y. Sumner, Abigail A. Fraeman, Kjartan M Kinch, Morten B. Madsen, Igor Mitofranov, Insoo Jun, Fred J. Calef, Ashwin R. Vasavada
2017, Geophysical Research Letters (44) 4716-4724
Diagenetic silica enrichment in fracture-associated halos that crosscut lacustrine and unconformably overlying aeolian sedimentary bedrock is observed on the lower north slope of Aeolis Mons in Gale crater, Mars. The diagenetic silica enrichment is colocated with detrital silica enrichment observed in the lacustrine bedrock yet extends into a considerably younger,...
Geologic map of the northeast flank of Mauna Loa volcano, Island of Hawai'i, Hawaii
Frank A. Trusdell, John P. Lockwood
2017, Scientific Investigations Map 2932-A
SummaryMauna Loa, the largest volcano on Earth, has erupted 33 times since written descriptions became available in 1832. Some eruptions were preceded by only brief seismic unrest, while others followed several months to a year of increased seismicity.The majority of the eruptions of Mauna Loa began in the summit area...
Distribution and abundance of Millicoma Dace in the Coos River Basin, Oregon
Paul D. Scheerer, James T. Peterson, Shaun Clements
2017, Northwestern Naturalist (98) 39-47
The Millicoma Dace Rhinichthys cataractae is a form of Longnose Dace endemic to the Coos River drainage in southwestern Oregon. Sparse species records in the Oregon State University Ichthyology Collection and database and infrequent recent encounters prompted surveys to assess the current status and distribution of the species. In 2014, we surveyed...
Matching watershed and otolith chemistry to establish natal origin of an endangered desert lake sucker
Deanna D. Strohm, Phaedra E. Budy, Todd A. Crowl
2017, Transactions of the American Fisheries Society (146) 732-743
Stream habitat restoration and supplemental stocking of hatchery-reared fish have increasingly become key components of recovery plans for imperiled freshwater fish; however, determining when to discontinue stocking efforts, prioritizing restoration areas, and evaluating restoration success present a conservation challenge. In this study, we demonstrate that otolith microchemistry is an effective...
Freshwater mussels (Unionidae): Central and West Texas Final Report
Charles R. Randklev, Nathan Johnson, T. J. Miller, J.M. Morton, J. Dudding, K. Skow, B. Boseman, M. Hart, E.T. Tsakiris, K. Inoue, R.R. Lopez
2017, Report, Texas A&M Institute of Renewable Natural Resources
The goal of this study was two-fold: (1) assess the taxonomic identity and phylogenetic placement of Quadrula aurea (Golden Orb) [Federal Candidate], Quadrula houstonensis (Smooth Pimpleback) [Federal Candidate], and Quadrula petrina (Texas Pimpleback) [Federal Candidate] through mitochondrial and nuclear DNA sequencing; and (2) provided additional information on the distribution and abundance for mussel species...
Comparative precision of age estimates from two southern reservoir populations of paddlefish [Polyodon spathula (Walbaum, 1792)]
James M. Long, Ashley Nealis
2017, Journal of Applied Ichthyology (33) 819-820
The aim of the study was to determine whether location and sex affected the age precision estimates between two southern, reservoir populations of paddlefish [Polyodon spathula (Walbaum, 1792)]. From 589 paddlefish collected in Grand Lake and Keystone Lake, Oklahoma in 2011, ages from dentaries were estimated using three independent readers and...
Different historical fire–climate patterns in California
Jon E. Keeley, Alexandra D. Syphard
2017, International Journal of Wildland Fire (26) 253-268
The relationship between annual variation in area burned and seasonal temperatures and precipitation was investigated for the major climate divisions in California. Historical analyses showed marked differences in fires on montane and foothill landscapes. Based on roughly a century of data, there are five important lessons on fire–climate relationships in...
Ecological regime shift drives declining growth rates of sea turtles throughout the West Atlantic
Karen A. Bjorndal, Alan B. Bolten, Milani Chaloupka, Vincent S. Saba, Claudio Bellini, Maria A.G. Marcovaldi, Armando J.B. Santos, Luis Felipe Wurdig Bortolon, Anne B. Meylan, Peter A. Meylan, Jennifer Gray, Robert Hardy, Beth Brost, Michael Bresette, Jonathan C. Gorham, Stephen Connett, Barbara Van Sciver Crouchley, Mike Dawson, Deborah Hayes, Carlos E. Diez, Robert P. van Dam, Sue Willis, Mabel Nava, Kristen M. Hart, Michael S. Cherkiss, Andrew Crowder, Clayton Pollock, Zandy Hillis-Starr, Fernando A. Munoz Teneria, Roberto Herrera-Pavon, Vanessa Labrada-Martagon, Armando Lorences, Ana Negrete-Philippe, Margaret M. Lamont, Allen M. Foley, Rhonda Bailey, Raymond R. Carthy, Russell Scarpino, Erin McMichael, Jane A. Provancha, Annabelle Brooks, Adriana Jardim, Milagros Lopez-Mendilaharsu, Daniel Gonzalez-Paredes, Andres Estrades, Alejandro Fallabrino, Gustavo Martinez-Souza, Gabriela M. Velez-Rubio, Ralf H. Boulon Jr., Jaime Collazo, Robert Wershoven, Vicente Guzman Hernandez, Thomas B. Stringell, Amdeep Sanghera, Peter B. Richardson, Annette C. Broderick, Quinton Phillips, Marta C. Calosso, John A.B. Claydon, Tasha L. Metz, Amanda L. Gordon, Andre M. Landry Jr., Donna J. Shaver, Janice Blumenthal, Lucy Collyer, Brendan J. Godley, Andrew McGowan, Matthew J. Witt, Cathi L. Campbell, Cynthia J. Lagueux, Thomas L. Bethel, Lory Kenyon
2017, Global Change Biology (23) 4556-4568
Somatic growth is an integrated, individual-based response to environmental conditions, especially in ectotherms. Growth dynamics of large, mobile animals are particularly useful as bio-indicators of environmental change at regional scales. We assembled growth rate data from throughout the West Atlantic for green turtles, Chelonia mydas, which are long-lived, highly migratory,...
Using a full annual cycle model to evaluate long-term population viability of the conservation-reliant Kirtland's warbler after successful recovery
Donald J. Brown, Christine Ribic, Deahn M. Donner, Mark D. Nelson, Carol I. Bocetti, Christie M. Deloria-Sheffield
2017, Journal of Applied Ecology (54) 439-449
Long-term management planning for conservation-reliant migratory songbirds is particularly challenging because habitat quality in different stages and geographic locations of the annual cycle can have direct and carry-over effects that influence the population dynamics. The Neotropical migratory songbird Kirtland's warbler Setophaga kirtlandii (Baird 1852) is listed as...
Seawater-flooding events and impact on freshwater lenses of low-lying islands: Controlling factors, basic management and mitigation
Stephen B. Gingerich, Clifford I. Voss, Adam G. Johnson
2017, Journal of Hydrology (551) 676-688
An unprecedented set of hydrologic observations was collected after the Dec 2008 seawater-flooding event on Roi-Namur, Kwajalein Atoll, Republic of the Marshall Islands. By two days after the seawater flooding that occurred at the beginning of dry season, the observed salinity of water withdrawn by the island’s main skimming...
A practical method for the determination of total selenium in environmental samples using isotope dilution-hydride generation-inductively coupled plasma-mass spectrometry
Amy E. Kleckner, Evangelos Kakouros, A. Robin Stewart
2017, Limnology and Oceanography: Methods (15) 363-371
A safe, practical, and accurate method for the determination of selenium (Se) in range of environmental samples was developed. Small sample masses, 5–20 mg, were amended with 82Se enriched isotope for the isotope dilution (ID), preceding a multi-step wet digestion with nitric acid (HNO3) and hydrogen peroxide (H2O2). Samples were...
Subsequent-year recaptures at winter sites in three species of shrubland sparrows (Emberizidae)
Steven T. Knick, Matthias Leu, Steve E. Hanser
2017, Southwestern Naturalist (62) 121-125
The tendency by individual birds to return to winter sites in subsequent years can be important in assessing the potential influence of habitat changes during the nonbreeding period. We recaptured five Brewer's (Spizella breweri), seven sagebrush (Artemisiospiza nevadensis), and three black-throated (Amphispiza bilineata) sparrows from 1–3 subsequent years at the...
High sensitivity of gross primary production in the Rocky Mountains to summer rain
M. Berkelhammer, I.C. Stefanescu, J. Joiner, Lesleigh Anderson
2017, Geophysical Research Letters (44) 3643-3652
In the catchments of the Rocky Mountains, peak snowpack is declining in response to warmer spring temperatures. To understand how this will influence terrestrial gross primary production (GPP), we compared precipitation data across the intermountain west with satellite retrievals of solar-induced fluorescence (SIF), a proxy for GPP. Annual precipitation patterns...
Geologic map of Meridiani Planum, Mars
Brian M. Hynek, Gaetano Di Achille
2017, Scientific Investigations Map 3356
Introduction and BackgroundThe Meridiani Planum region of Mars—originally named due to its proximity to the Martian prime meridian—contains a variety of geologic units, including those that are crater‑related, that span the Early Noachian to Late Amazonian Epochs. Mars Global Surveyor (MGS) data indicate this area contains extensive layered deposits, some...
Controls on the chemical composition of saline surface crusts and emitted dust from a wet playa in the Mojave Desert (USA)
Harland L. Goldstein, George N. Breit, Richard L. Reynolds
2017, Journal of Arid Environments (140) 50-66
Saline-surface crusts and their compositions at ephemeral, dry, and drying lakes are important products of arid-land processes. Detailed understanding is lacking, however, about interactions among locally variable hydrogeologic conditions, compositional control of groundwater on vadose zone and surface salts, and dust composition. Chemical and physical data from groundwater, sediments, and...
Precipitation thresholds for landslide occurrence near Seattle, Mukilteo, and Everett, Washington
Caroline R. Scheevel, Rex L. Baum, Benjamin B. Mirus, Joel B. Smith
2017, Open-File Report 2017-1039
Shallow landslides along coastal bluffs frequently occur in the railway corridor between Seattle and Everett, Washington. These slides disrupt passenger rail service, both because of required track maintenance and because the railroad owner, Burlington Northern Santa Fe Railway, does not allow passenger travel for 48 hours after a disruptive landslide....
Ongoing efforts to make ash-cloud model forecasts more accurate
Larry G. Mastin, Alexa R. Van Eaton, David J. Schneider, Roger P. Denlinger
2017, Conference Paper, Proceedings of impact of volcanic ash clouds on military operations
The 2010 eruption of Eyjafjallajökull volcano in Iceland changed the rules for air travel in Europe and introduced the use of restricted fly zones based on ash-cloud concentrations calculated by dispersion models. This change prompted a sustained effort to improve the accuracy of ash-cloud model forecasts. In this paper we...
Pore network modeling of the electrical signature of solute transport in dual-domain media
Frederick Day-Lewis, Niklas Linde, Roy Haggerty, Kamini Singha, Martin A. Briggs
2017, Geophysical Research Letters (44) 4908-4916
Dual-domain models are used to explain anomalous solute transport behavior observed in diverse hydrologic settings and applications, from groundwater remediation to hyporheic exchange. To constrain such models, new methods are needed with sensitivity to both immobile and mobile domains. Recent experiments indicate that dual-domain transport of ionic...
