Top-down and bottom-up interactions influence fledging success at North America’s largest colony of Caspian terns (Hydroprogne caspia)
Stefanie Collar, Daniel D. Roby, Donald E. Lyons
2017, Estuaries and Coasts (40) 1808-1818
Our study investigated the influence of bottom-up and top-down drivers on the declining fledging success at a once thriving breeding colony of Caspian terns (Hydroprogne caspia). Situated at the mouth of the Columbia River, OR, East Sand Island (ESI) is home to the largest Caspian tern breeding colony...
A comparison of two mobile electrode arrays for increasing mortality of Lake Trout embryos
Peter J. Brown, Christopher S. Guy, Michael H. Meeuwig
2017, North American Journal of Fisheries Management (37) 363-369
Conservation of sport fisheries and populations of several native fishes in the western United States is dependent on sustained success of removal programs targeting invasive Lake Trout Salvelinus namaycush. Gill-netting of spawning adults is one strategy used to decrease spawning success; however, additional complementary methods are needed to disrupt Lake Trout...
A model-based approach to wildland fire reconstruction using sediment charcoal records
Malcolm S. Itter, Andrew O. Finley, Mevin Hooten, Philip E. Higuera, Jennifer R. Marlon, Ryan Kelly, Jason S. McLachlan
2017, Environmetrics (28) 1-15
Lake sediment charcoal records are used in paleoecological analyses to reconstruct fire history, including the identification of past wildland fires. One challenge of applying sediment charcoal records to infer fire history is the separation of charcoal associated with local fire occurrence and charcoal originating from regional fire activity. Despite a...
Estimating the high-arsenic domestic-well population in the conterminous United States
Joseph D. Ayotte, Laura Medalie, Sharon L. Qi, Lorraine C. Backer, Bernard T. Nolan
2017, Environmental Science & Technology (51) 12443-12454
Arsenic concentrations from 20 450 domestic wells in the U.S. were used to develop a logistic regression model of the probability of having arsenic >10 μg/L (“high arsenic”), which is presented at the county, state, and national scales. Variables representing geologic sources, geochemical, hydrologic, and physical features were among the significant...
Survival, movement, and distribution of juvenile Burbot in a tributary of the Kootenai River
Zachary S. Beard, Michael C. Quist, Ryan S. Hardy, Tyler J. Ross
2017, North American Journal of Fisheries Management (37) 1274-1288
Burbot Lota lota in the lower Kootenai River, Idaho, have been the focus of extensive conservation efforts, particularly the release of hatchery-reared juvenile Burbot into small tributaries. The Idaho Department of Fish and Game installed a fixed PIT antenna on Deep Creek, a tributary of the Kootenai River, to evaluate movement of...
Effects of industrial and investigator disturbance on Arctic-nesting geese
Brandt W. Meixell, Paul L. Flint
2017, Journal of Wildlife Management (81) 1372-1385
Oil and gas development on the Arctic Coastal Plain (ACP) of Alaska, USA may have effects on Arctic-nesting birds. To estimate effects of industrial activity and investigator disturbance on avian productivity, we monitored nests of greater white-fronted geese (Anser albifrons) with digital cameras and periodic nest visits during 2013–2014 at...
Methodological considerations of terrestrial laser scanning for vegetation monitoring in the sagebrush steppe
Kyle E. Anderson, Nancy Glenn, Lucas Spaete, Douglas J. Shinneman, David S. Pilliod, Robert Arkle, Susan K. McIlroy, DeWayne R. Derryberry
2017, Environmental Monitoring and Assessment (189) 1-12
Terrestrial laser scanning (TLS) provides fast collection of high-definition structural information, making it a valuable field instrument to many monitoring applications. A weakness of TLS collections, especially in vegetation, is the occurrence of unsampled regions in point clouds where the sensor’s line-of-sight is blocked by intervening material. This problem, referred...
Perspectives on chemical oceanography in the 21st century: Participants of the COME ABOARD Meeting examine aspects of the field in the context of 40 years of DISCO
Andrea J. Fassbender, Hilary I. Palevsky, Todd R. Martz, Anitra E. Ingalls, Martha Gledhill, Sarah E. Fawcett, Jay Brandes, Lihini Aluwihare, Robert M. Anderson, Sara Bender, Ed Boyle, Debbie Bronk, Ken Buesseler, David J. Burdige, Karen Casciotti, Hilary G. Close, Maureen Conte, Greg Cutter, Meg Estapa, Katja Fennel, Sara Ferron, Brian Glazer, Miguel Goni, Max Grand, Chris Guay, Mariko Hatta, Chris Hayes, Tristan Horner, Ellery Ingall, Kenneth G. Johnson, Laurie Juranek, Angela Knapp, Phoebe Lam, George Luther, Paty Matrai, David Nicholson, Adina Paytan, Robert Pellenbarg, Kim Popendorf, Christopher M. Reddy, Kathleen Ruttenberg, Chris Sabine, Frank Sansone, Nayrah Shaltout, Liz Sikes, Eric T. Sundquist, David Valentine, Zhao Wang, Sam Wilson, Pamela Barrett, Melanie Behrens, Anna Belcher, Lauren Biermann, Rene Boiteau, Jennifer Clarke, Jamie Collins, Alysha Coppola, Alina M. Ebling, Fenix Garcia-Tigreros, Johanna Goldman, Elisa F. Guallart, William Haskell, Sarah Hurley, David Janssen, Winn Johnson, Sinikka Lennhartz, Shuting Liu, Shaily Rahman, Daisy Ray, Amit Sarkar, Zvika Steiner, Brittany Widner, Bo Yang
2017, Marine Chemistry (196) 181-190
The questions that chemical oceanographers prioritize over the coming decades, and the methods we use to address these questions, will define our field's contribution to 21st century science. In recognition of this, the U.S. National Science Foundation and National Oceanic and Atmospheric Administration galvanized a community effort (the Chemical Oceanography...
Identity, reproductive potential, distribution, ecology and management of invasive Pomacea maculata in the southern United States
Romi L. Burks, Jennifer Bernatis, James E. Byers, Jacoby Carter, Charles M. Martin, William G. McDowell, Jess Van Dyke
R. C. Joshi, R. H. Cowie, L. S. Sebastian, editor(s)
2017, Book chapter, Biology and management of invasive apple snails
Established populations of introduced Pomacea maculata, a highly fecund, large species of apple snail native to South America, now occur throughout southeast Asia, in Spain and extensively across the southern United States. Substantial research on nonnative apple snails takes place in Southeast Asia and has frequently identified apple snails as...
Regional geology and tectonics
Warren J. Nokleberg
Thomas K. Bundtzen, Warren J. Nokleberg, Raymond A. Price, David W. Scholl, David B. Stone, editor(s)
2017, Book chapter, Dynamic geology of the Northern Cordillera (Alaska and western Canada) and adjacent marine areas: Tectonics, hazards, and resources
This chapter describes the regional geology and tectonic origins of the major geologic units for the Northern Cordillera. The goals of the chapter are to: (1) provide a summary and regional overview of this vast region that contains a complicated geologic history; and (2) describe the major geologic units and...
Detecting spatial patterns of rivermouth processes using a geostatistical framework for near-real-time analysis
Wenzhao Xu, Paris D. Collingsworth, Barbara Bailey, Martha L. Carlson Mazur, Jeff Schaeffer, Barbara Minsker
2017, Environmental Modelling and Software (97) 72-85
This paper proposes a geospatial analysis framework and software to interpret water-quality sampling data from towed undulating vehicles in near-real time. The framework includes data quality assurance and quality control processes, automated kriging interpolation along undulating paths, and local hotspot and cluster analyses. These methods are implemented in an interactive...
Pleistocene glaciers, lakes, and floods in north-central Washington State
Richard B. Waitt
Ralph A. Haugerud, Harvey M. Kelsey, editor(s)
2017, Book chapter, From the Puget Lowland to east of the Cascade Range—Geologic excursions in the Pacific Northwest: Geological Society of America Field Guide 49
The Methow, Chelan, Wenatchee, and other terrane blocks accreted in late Mesozoic to Eocene times. Methow valley is excavated in an exotic terrane of folded Mesozoic sedimentary and volcanic rocks faulted between crystalline blocks. Repeated floods of Columbia River Basalt about 16 Ma drowned a backarc basin to the southeast. Cirques,...
Geologic road guides for the Southern Canadian Cordillera--Viewing geology and tectonics along major highways
Warren J. Nokleberg, Raymond A. Price
Thomas K. Bundtzen, Warren J. Nokleberg, Raymond A. Price, David W. Scholl, David B. Stone, editor(s)
2017, Book chapter, Dynamic geology of the Northern Cordillera (Alaska and western Canada) and adjacent marine areas: Tectonics, hazards, and resources
The Geologic Road Guides for the Southern Canadian Cordillera provide a layperson’s understanding of the major geologic units and their tectonic origins along portions of two sets of major highways corridors, herein termed the Southern Road Guide and the Northern Road Guide. The two routes are shown on the Southern...
Simulation of groundwater flow and pumping scenarios for 1900–2050 near Mount Pleasant, South Carolina
Jason M. Fine, Matthew D. Petkewich, Bruce G. Campbell
2017, Scientific Investigations Report 2017-5128
Groundwater withdrawals from the Upper Cretaceous-age Middendorf aquifer in South Carolina have created a large, regional cone of depression in the potentiometric surface of the Middendorf aquifer in Charleston and Berkeley Counties, South Carolina. Groundwater-level declines of as much as 249 feet have been observed in wells over the past...
Compositional variations in sands of the Bagnold Dunes, Gale Crater, Mars, from visible-shortwave infrared spectroscopy and comparison with ground truth from the Curiosity Rover
Mathieu G.A. Lapotre, B. L. Ehlmann, Sarah E. Minson, R. E. Arvidson, F. Ayoub, A. A. Fraeman, R. C. Ewing, N. T. Bridges
2017, Journal of Geophysical Research E: Planets (122) 2489-2509
During its ascent up Mount Sharp, the Mars Science Laboratory Curiosity rover traversed the Bagnold Dune Field. We model sand modal mineralogy and grain size at four locations near the rover traverse, using orbital shortwave infrared single scattering albedo spectra and a Markov-Chain Monte Carlo implementation of Hapke's radiative transfer...
Geochemistry of mercury and other constituents in subsurface sediment—Analyses from 2011 and 2012 coring campaigns, Cache Creek Settling Basin, Yolo County, California
Michelle R. Arias, Charles N. Alpers, Mark C. Marvin-DiPasquale, Christopher C. Fuller, Jennifer L. Agee, Michelle Sneed, Andrew Y. Morita, Antonia Salas
2017, Data Series 1061
Cache Creek Settling Basin was constructed in 1937 to trap sediment from Cache Creek before delivery to the Yolo Bypass, a flood conveyance for the Sacramento River system that is tributary to the Sacramento–San Joaquin Delta. Sediment management options being considered by stakeholders in the Cache Creek Settling Basin include...
Examining spatial patterns of selection and use for an altered predator guild
John F. Organ, Matthew Mumma, Joseph D. Holbrook, Nathaniel D. Rayl, Christopher J. Zieminski, Todd K. Fuller, Shane P. Mahoney, Lisette P. Waits
2017, Oecologia (185) 725-735
Anthropogenic disturbances have altered species’ distributions potentially impacting interspecific interactions. Interference competition is when one species denies a competing species access to a resource. One mechanism of interference competition is aggression, which can result in altered space-use of a subordinate species due to the threat of harm, otherwise known as a ‘landscape of fear’. Alternatively, subordinates might...
Database for geologic maps of pyroclastic-flow and related deposits of the 1980 eruptions of Mount St. Helens, Washington
Andrew J. Furze, Joseph A. Bard, Joel Robinson, David W. Ramsey, Mel A. Kuntz, Peter D. Rowley, Norman S. MacLeod
2017, Data Series 1054
This publication releases digital versions of the geologic maps in U.S. Geological Survey Miscellaneous Investigations Map 1950 (USGS I-1950), “Geologic maps of pyroclastic-flow and related deposits of the 1980 eruptions of Mount St. Helens, Washington” (Kuntz, Rowley, and MacLeod, 1990) (https://pubs.er.usgs.gov/publication/i1950). The 1980 Mount St. Helens eruptions...
Small high-definition video cameras as a tool to resight uniquely marked Interior Least Terns (Sternula antillarum athalassos)
Dustin L. Toy, Erin Roche, Colin M. Dovichin
2017, Waterbirds (40) 180-186
Many bird species of conservation concern have behavioral or morphological traits that make it difficult for researchers to determine if the birds have been uniquely marked. Those traits can also increase the difficulty for researchers to decipher those markers. As a result, it is a priority for field biologists to...
High-resolution seismic characterization of the gas and gas hydrate system at Green Canyon 955, Gulf of Mexico, USA
Seth S. Haines, Patrick E. Hart, Timothy S. Collett, William Shedd, Matthew Frye, Paul Weimer, Ray Boswell
2017, Marine and Petroleum Geology (82) 220-237
The Pliocene and Pleistocene sediments at lease block Green Canyon 955 (GC955) in the Gulf of Mexico include sand-rich strata with high saturations of gas hydrate; these gas hydrate accumulations and the associated geology have been characterized over the past decade using conventional industry three-dimensional (3D) seismic data and dedicated...
Origin of discrepancies between crater size-frequency distributions of coeval lunar geologic units via target property contrasts
Carolyn H. Van der Bogert, Harald Hiesinger, Colin M. Dundas, T. Kruger, Alfred S. McEwen, Michael Zanetti, Mark S. Robinson
2017, Icarus (298) 49-63
Recent work on dating Copernican-aged craters, using Lunar Reconnaissance Orbiter (LRO) Camera data, re-encountered a curious discrepancy in crater size-frequency distribution (CSFD) measurements that was observed, but not understood, during the Apollo era. For example, at Tycho, Copernicus, and Aristarchus craters, CSFDs of impact melt deposits give significantly younger relative...
Flow and residence times of dynamic river bank storage and sinuosity-driven hyporheic exchange
J.D. Gomez-Velez, J.L. Wilson, M.B. Cardenas, Judson Harvey
2017, Water Resources Research (53) 8572-8595
Hydrologic exchange fluxes (HEFs) vary significantly along river corridors due to spatiotemporal changes in discharge and geomorphology. This variability results in the emergence of biogeochemical hot-spots and hot-moments that ultimately control solute and energy transport and ecosystem services from the local to the watershed scales. In this work, we use...
Crotalus oreganus lutosus (Great Basin Rattlesnake). Defensive behavior/head hiding and tongue display
Alexander K. Johnson, Phil A. Medica
2017, Herpetological Review (48) 209-210
A variety of snake species employ head hiding as defensive behavior (Greene 1973. J. Herpetol. 7:143–161), but such behavior seems to be rarely observed in rattlesnakes. A recent report (Medica 2009. Herpetol. Rev. 40:95–97) presented observations on Crotalus scutulatus scutulatus and cited cases of similar behavior involving C. atrox, C....
Deglacial sea level history of the East Siberian Sea and Chukchi Sea margins
Thomas M. Cronin, Matt O’Regan, Christof Pearce, Laura Gemery, Michael Toomey, Igor Semiletov
2017, Climate of the Past (13) 1097-1110
Deglacial (12.8–10.7 ka) sea level history on the East Siberian continental shelf and upper continental slope was reconstructed using new geophysical records and sediment cores taken during Leg 2 of the 2014 SWERUS-C3 expedition. The focus of this study is two cores from Herald Canyon, piston core SWERUS-L2-4-PC1 (4-PC1) and...
Hydrological responses to channelization and the formation of valley plugs and shoals
Aaron R. Pierce, Sammy L. King
2017, Wetlands (37) 513-523
Rehabilitation of floodplain systems focuses on restoring interactions between the fluvial system and floodplain, however, there is a paucity of information on the effects of valley plugs and shoals on floodplain hydrological processes. We investigated hydrologic regimes in floodplains at three valley plug sites, two shoal sites, and three unchannelized...
