Host feeding ecology and trophic position significantly influence isotopic discrimination between a generalist ectoparasite and its hosts: Implications for parasite-host trophic studies
William G. Jenkins, Amanda W.J. Demopoulos, Paul C. Sikkel
2018, Food Webs (16)
Despite being one of the most prevalent forms of consumerism in ecological communities, parasitism has largely been excluded from food-web models. Stable isotope analysis of consumers and their diets has been widely used in the study of food webs for decades. However, the amount of information regarding parasite stable isotope...
Detections of current-use pesticides at 12 surface water sites in California during a 2-year period beginning in 2015
Corey J. Sanders, James L. Orlando, Michelle L. Hladik
2018, Data Series 1088
Surface water samples were collected by the U.S. Geological Survey and multiple cooperators during base flow/irrigation runoff and storm runoff conditions from 12 sites throughout California, over 2 consecutive years beginning in April 2015, from both urban and agriculturally dominated watersheds. Water samples were analyzed by gas chromatography/mass spectrometry and...
Direct substitution of fishmeal with bioprocessed soybean meal in brown trout diets
Jill M. Voorhees, Michael Barnes, Steven R. Chipps, Michael Browne
2018, Journal of Fisheries and Aquaculture Development
This 121-day experiment evaluated the rearing performance of juvenile brown trout (Salmo trutta; initial weight 56.1±1.6 g, length 167.2±1.4 mm, mean ±SE) fed one of four isonitrogenous and isocaloric diets (46% protein, 16% lipid). Fishmeal, the primary protein source for the reference diet, was compared to diets where bioprocessed soybean...
Using reverse-time egg transport analysis for predicting Asian Carp spawning grounds in the Illinois River
Zhenduo Zhu, David Soong, Tatiana Garcia, Mina Shahed Behrouz, Steven E. Butler, Elizabeth A. Murphy, Matthew J. Diana, James J. Duncker, David H. Wahl
2018, Ecological Modelling (384) 53-62
Identifying spawning grounds of Asian carp is important for determining the reproductive front of invasive populations. Ichthyoplankton monitoring along the Illinois Waterway (IWW) has provided information on abundances of Asian carp eggs in the IWW's navigation pools. Post-fertilization times derived from egg development stages and water temperatures can be used...
Rating stability, and frequency and magnitude of shifts, for streamgages in Virginia through water year 2013
Terence Messinger, Robert W. Burgholzer
2018, Scientific Investigations Report 2017-5137
The U.S. Geological Survey, in cooperation with the Virginia Department of Environmental Quality, has quantified several measures of rating stability and the frequency and magnitude of changes to ratings through time for 174 real-time continuous streamgages active in Virginia as of September 30, 2013. Generalized additive models (GAMs) were fitted...
Carving Grand Canyon’s inner gorge: A test of steady incision versus rapid knickzone migration
Ryan S. Crow, Karl E. Karlstrom, Laura J. Crossey, Victor Polyak, Yemane Asmerom, William C. McIntosh
2018, Geosphere (14) 1-17
A recent study posits that much of the 240-m-deep inner gorge of Grand Canyon was carved between 500 and 400 ka via passage of a migrating knickzone with incision rates of ~1600 m/Ma during that time period; this was based on dating of a ca. 500 ka travertine deposit perched...
Stratifying ocean sampling globally and with depth to account for environmental variability
Mark John Costello, Zeenatul Basher, Roger Sayre, Sean P. Breyer, Dawn J. Wright
2018, Scientific Reports (8) 1-9
With increasing depth, the ocean is less sampled for physical, chemical and biological variables. Using the Global Marine Environmental Datasets (GMED) and Ecological Marine Units (EMUs), we show that spatial variation in environmental variables decreases with depth. This is also the case over temporal scales because seasonal change, surface weather conditions, and biological...
A method for determining avian influenza virus hemagglutinin and neuraminidase subtype association
Christopher Ottinger, Deborah D. Iwanowicz, Luke R. Iwanowicz, Cynthia R. Adams, Lakyn R. Sanders, Christine L. Densmore
2018, Open-File Report 2018-1102
Methods for grouping specific avian influenza virus (AIV) hemagglutinin (HA) and neuraminidase (NA) subtype reverse-transcription polymerase chain reaction (RT-PCR) products into HA:NA subtypes when egg incubation is technically not feasible were evaluated. These approaches were adopted for use as post hoc methods after melt curve analysis. The methods are based...
Abundance and productivity of marbled murrelets (Brachyramphus marmoratus) off central California during the 2017 breeding season
Jonathan J. Felis, Josh Adams, Emily C. Kelsey
2018, Data Series 1093
Marbled murrelets (Brachyramphus marmoratus) have been listed as “Endangered” by the State of California and “Threatened” by the U.S. Fish and Wildlife Service since 1992 in California, Oregon, and Washington. Information regarding marbled murrelet abundance, distribution, population trends, and habitat associations is critical for risk assessment, effective management and...
Community for Data Integration 2017 annual report
Leslie Hsu, Madison L. Langseth
2018, Open-File Report 2018-1110
The Community for Data Integration (CDI) is a group that helps members grow their expertise on all aspects of working with scientific data. The CDI’s activities advance data and information integration capabilities in the U.S. Geological Survey and in the wider Earth and biological sciences. This annual report describes the...
Spatial and temporal trends in selenium in the upper Blackfoot River watershed, southeastern Idaho, 2001–16
Lauren M. Zinsser, Christopher A. Mebane, Greg C. Mladenka, Lynn R. Van Every, Marshall L. Williams
2018, Scientific Investigations Report 2018-5081
Phosphate mining in southeastern Idaho has been an important economic driver for the region and State for over 100 years, but weathering of mining waste rock has also released selenium into the Blackfoot River. This report analyzes and presents data from three separate but complementary studies monitoring selenium in streams...
UFINCH: A method for simulating unit and daily flows in networks of channels described by NHDPlus using continuous flow data at U.S. Geological Survey streamgages
David J. Holtschlag
2018, Scientific Investigations Report 2016-5074
The UFINCH (Unit Flows In Networks of Channels) computer application can be used to simulate daily and unit flows in networks of streams based on geospatial data in the National Hydrography Dataset NHDPlus (with value added attributes), and U.S. Geoogical Survey daily streamflow data from a downstream (or base) streamgage....
Tools for measuring, modelling, and valuing ecosystem services: guidance for Key Biodiversity Areas, natural World Heritage sites, and protected areas
Rachel A Neugarten, Penny F Langhammer, Elena Osipova, Kenneth J. Bagstad, Nirmal Bhagabati, Stuart H M Butchart, Nigel Dudley, Vittoria Elliott, Leah R. Gerber, Claudia Gutierrez-Arrellano, Kasandra-Zoica Ivanic, Marianne Kettunen, Lisa Mandle, Jennifer C Merriman, Mark Mulligan, Kelvin S-H Peh, Ciara Raudsepp-Hearne, Darius J. Semmens, Sue Stolton, Simon Willcock, Craig Groves
2018, Report
Increasing interest in measuring, modelling and valuing ecosystem services (ES), the benefits that ecosystems provide to people, has resulted in the development of an array of ES assessment tools in recent years. Selecting an appropriate tool for measuring and modelling ES can be challenging. This document provides guidance for practitioners...
Resurgence of specialized shade coffee cultivation: Effects on pollination services and quality of coffee production
Sara Guiti Prado, Jaime A. Collazo, R. E. Irwin
2018, Agriculture, Ecosystems and Environment (265) 567-575
Since the early 2000s, there has been a resurgence in shade coffee production on the island of Puerto Rico. The newly restored specialized shade canopy consists of four native tree species, three of which are nitrogen fixers, and is intended to provide 30% shade cover once the trees are matured....
Temporal evaluation of estrogenic endocrine disruption markers in smallmouth bass (Micropterus dolomieu) reveals seasonal variability in intersex
Luke R. Iwanowicz, A.E. Pinkney, C.P. Guy, A.M. Major, K. Munney, Vicki S. Blazer, David Alvarez, Heather L. Walsh, Adam J. Sperry, Lakyn R. Sanders, D. R. Smith
2018, Science of the Total Environment (646) 245-256
A reconnaissance project completed in 2009 identified intersex and elevated plasma vitellogenin in male smallmouth bass inhabiting the Missisquoi River, VT. In an attempt to identify the presence and seasonality of putative endocrine disrupting chemicals or other factors associated with these observations, a comprehensive reevaluation was conducted between September 2012...
KG²B, a collaborative benchmarking exercise for estimating the permeability of the Grimsel granodiorite - Part 2: modeling, microstructures and complementary data
Christian David, J. Wassermann, F. Amann, J.M. Klaver, C. Davy, J. Sarout, L. Esteban, E.H. Rutter, Q. Hu, L. Louis, P. Delage, David A. Lockner, A.P.S. Selvadurai, T Vanorio, A. Amann Hildenbrand, P.G. Meredith, J. Browning, T.M. Mitchell, C. Madonna, J. Billiotte, T. Reuschle, D. Lasseux, J. Fortin, R. Lenormand, D. Loggia, F. Nono, G. Boitnott, E. Jahns, Fleury. M., G. Berthe, P. Braun, D. Gregoire, L. Perrier, P. Polito, Y. Jannot, A. Sommier, B. Krooss, R. Fink, A. Clark
2018, Geophysical Journal International (215) 825-843
Measuring and modelling the permeability of tight rocks remains a challenging task. In addition to the traditional sources of errors that affect more permeable formations (e.g. sample selection, non-representative specimens, disturbance introduced during sample acquisition and preparation), tight rocks can be particularly prone to solid–fluid interactions and thus more sensitive...
Lactation and resource limitation affect stress responses, thyroid hormones, immune function, and antioxidant capacity of sea otters (Enhydra lutris)
Sarah M. Chinn, Daniel Monson, M. Tim Tinker, Michelle M. Staedler, Daniel E. Crocker
2018, Ecology and Evolution (8) 8433-8447
Lactation is the most energetically demanding stage of reproduction in female mammals. Increased energetic allocation toward current reproduction may result in fitness costs, although the mechanisms underlying these trade‐offs are not well understood. Trade‐offs during lactation may include reduced energetic allocation to cellular maintenance, immune response, and survival and may...
Caldera life-cycles of the Yellowstone hotspot track: Death and rebirth of the Heise Caldera
Marlon M. Jean, Eric H. Christiansen, Duane E. Champion, Scott K. Vetter, William M. Phillips, Stephan Schuth, John W. Shervais
2018, Journal of Petrology (59) 1643-1670
As one of the most geochemically unique drill cores recovered within the Yellowstone–Snake River Plain (YSRP) province, the Sugar City geothermal test well was drilled into intra-caldera rhyolite lavas and tuffs erupted during the middle to late Pliocene and the resurgent basaltic volcanism erupted during the Pleistocene. This sequence...
Geochemistry and microbiology of groundwater and solids from extraction and monitoring wells and their relation to well efficiency at a Federally operated confined disposal facility, East Chicago, Indiana
Randall E. Bayless, Travis R. Cole, David C. Lampe, R.E. Travis, Marjorie S. Schulz, Paul M. Buszka
2018, Scientific Investigations Report 2018-5073
In cooperation with the U.S. Army Corps of Engineers, Chicago District, the U.S. Geological Survey investigated the processes affecting water quality, geochemistry, and microbiology in representative extraction and monitoring wells at a confined disposal facility (CDF) in East Chicago, Indiana. The CDF is a 140-acre Federally-managed facility that was the...
Decomposing leftovers: Event, path, and site residuals for a small magnitude ANZA region GMPE
Valerie Jean Sahakian, Annemarie S. Baltay Sundstrom, Thomas C. Hanks, Janine S. Buehler, Frank L. Vernon, Deborah L. Kilb
2018, Bulletin of the Seismological Society of America (108) 2478-2492
Ground‐motion prediction equations (GMPEs) are critical elements of probabilistic seismic hazard analysis (PSHA), as well as for other applications of ground motions. To isolate the path component for the purpose of building nonergodic GMPEs, we compute a regional GMPE using a large dataset of peak ground accelerations (PGAs) from small‐magnitude...
BioTIME: A database of biodiversity time series for the Anthropocene
Maria Dornelas, Laura H. Antao, Faye Moyes, Amanda E. Bates, Anne E. Magurran, Dusan Adam, Asem A. Akhmetzhanova, Ward Appeltans, Jose Manuel Arcos, Haley Arnold, Narayanan Ayyappan, Gal Badihi, Andrew H. Baird, Miguel Barbosa, Tiago Egydio Barreto, Claus Bassler, Alecia Bellgrove, Jonathan Belmaker, Lisandro Benedetti-Cecchi, Brian J. Bett, Anne D. Bjorkman, Magdalena Blazewicz, Shane Blowes, Christopher P. Bloch, Timothy C. Bonebrake, Susan Boyd, Matt Bradford, Andrew J. Brooks, James H. Brown, Helge Bruelheide, Phaedra E. Budy, Fernando Carvalho, Edward Castaneda-Moya, Chaolun Allen Chen, John F. Chamblee, Tory J. Chase, Laura Siegwart Collier, Sharon K. Collinge, Richard Condit, Elisabeth J. Cooper, J. Hans C. Cornelissen, Unai Cotano, Shannan Kyle Crow, Gabriella Damasceno, Claire H. Davies, Robert A. Davis, Frank P. Day, Steven Degraer, Tim S. Doherty, Timothy E. Dunn, Giselda Durigan, J. Emmett Duffy, Dor Edelist, Graham Edgar, Robin Elahi, Sarah C. Elmendorf, Anders Enemar, S. K. Morgan Ernest, Reuben Escribano, Marc Estiarte, Brian S. Evans, Tung-Yung Fan, Fabiano Turini Farah, Luiz Loureiro Fernandes, Fabio Z. Farneda, Alessandra Fidelis, Robert Fitt, Anna Maria Fosaa, Geraldo Antonio Daher Correa Franco, Grace E. Frank, William R. Fraser, Hernando Garcia, Roberto Cazzolla Gatti, Or Givan, Elizabeth Gorgone-Barbosa, William A. Gould, Corrina Gries, Gary D. Grossman, Julio R. Gutierrez, Stephen Hale, Mark E Harmon, John Harte, Gary Haskins, Henshaw Donald L., Luise Hermanutz, Pamela Hidalgo, Pedro Higuchi, Andrew Hoey, Gert Van Hoey, Annika Hofgaard, Kristen T. Holeck, Robert D. Hollister, Richard Holmes, Mia Hoogenboom, Chih-hao Hsieh, Steven P. Hubbell, Falk Huettmann, Christine L. Huffard, Allen H. Hurlbert, Natalia Macedo Ivanauskas, David Janik, Ute Jandt, Anna Jazdzewska, Tore Johannessen, Jill F. Johnstone, Julia Jones, Faith A. M. Jones, Jungwon Kang, Tasrif Kartawijaya, Erin C. Keeley, Douglas A. Kelt, Rebecca Kinnear, Kari Klanderud, Halvor Knutsen, Christopher C. Koenig, Alessandra R. Kortz, Kamil Kral, Linda A. Kuhnz, Chao-Yang Kuo, David J. Kushner, Claire Laguionie-Marchais, Lesley T. Lancaster, Cheol Min Lee, Jonathan S. Lefcheck, Esther Levesque, David A. Lightfoot, Francisco Lloret, John D. Lloyd, Adria Lopez-Baucells, Maite Louzao, Joshua S. Madin, Borgbor Magnusson, Shahar Malamud, Iain Matthews, Kent P. McFarland, Brian J. McGill, Diane M. McKnight, William O. McLarney, Jason Meador, Peter L. Meserve, Daniel J. Metcalfe, Christoph F. J. Meyer, Anders Michelsen, Nataliya Milchakova, Tom Moens, Even Moland, Jon A. Moore, Carolina Mathias Moreira, Jorg Muller, Grace Murphy, Isla H. Myers-Smith, Randall W. Myster, Andrew Naumov, Francis Neat, James A. Nelson, Michael Paul Nelson, Stephen F. Newton, Natalia Norden, Jeffrey C. Oliver, Esben M. Olsen, Vladimir G. Onipchenko, Krzysztof Pabis, Robert J. Pabst, Alain Paquette, Sinta Pardede, David M. Paterson, Raphael Pelissier, Josep Penuelas, Alejandro Perez-Matus, Oscar Pizarro, Pomati. Francesco, Eric Post, Herbert H.T. Prins, John C. Priscu, Pieter Provoost, Kathleen L. Prudic, Erkki Pulliainen, B. R. Ramesh, Olivia Mendivil Ramos, Andrew Rassweiler, Jose Eduardo Rebelo, Daniel C. Reed, Peter B. Reich, Suzanne M. Remillard, Anthony J. Richardson, J. Paul Richardson, Itai van Rijn, Ricardo Rocha, Victor H. Rivera-Monroy, Christian Rixen, Kevin P. Robinson, Ricardo Ribeiro Rodrigues, Denise de Cerqueira Rossa-Feres, Lars G. Rudstam, Henry Ruhl, Catalina S. Ruz, Erica M. Sampaio, Nancy B. Rybicki, Andrew L. Rypel, Sofia Sal, Beatriz Salgado, Flavio A. M. Santos, Ana Paula Savassi-Coutinho, Sara E. Scanga, Jochen Schmidt, Robert L. Schooley, Fakhrizal Setiawan, Kwang-Tsao Shao, Gaius R. Shaver, Sally Sherman, Thomas W. Sherry, Jacek Sicinski, Caya Sievers, Ana Carolina da Silva, Fernando Rodrigues da Silva, Fabio L. Silveira, Jasper Slingsby, Tracey Smart, Sara J. Snell, Nadejda A. Soudzilovskaia, Gabriel B. G. Souza, Flaviana Maluf Souza, Vinicius Castro Souza, Christopher D. Stallings, Rowan Stanforth, Emily H. Stanley, Jose Mauro Sterza, Maarten Stevens, Rick D. Stuart-Smith, Yzel Rondon Suarez, Sarah Supp, Jorge Yoshio Tamashiro, Sukmaraharja Tarigan, Gary P. Thiede, Simon Thorn, Anne Tolvanen, Maria Theresa Zugliani Toniato, Orjan Totland, Robert R. Twilley, Gediminas Vaitkus, Nelson Valdivia, Martha Isabel Vallejo, Thomas J. Valone, Carl Van Colen, Jan Vanaverbeke, Fabio Venturoli, Hans M. Verheye, Marcelo Vianna, Rui P. Vieira, Tomas Vrska, Con Quang Vu, Lien Van Vu, Robert B. Waide, Conor Waldock, Dave Watts, Sara Webb, Tomasz Wesolowski, Ethan P. White, Claire E. Widdicombe, Dustin Wilgers, Richard S. Williams, Stefan B. Williams, Mark Williamson, Michael R. Willig, Trevor J. Willis, Sonja Wipf, Kerry D. Woods, Eric J. Woehler, Kyle Zawada, Michael L. Zettler
2018, Global Ecology and Biogeography (27) 760-786
MotivationThe BioTIME database contains raw data on species identities and abundances in ecological assemblages through time. These data enable users to calculate temporal trends in biodiversity within and amongst assemblages using a broad range of metrics. BioTIME is being developed as a community-led open-source database of biodiversity...
Preliminary groundwater salinity mapping near selected oil fields using historical water-sample data, central and southern California
Loren F. Metzger, Matthew K. Landon
2018, Scientific Investigations Report 2018-5082
The distribution of groundwater salinity was mapped for 31 oil fields and adjacent aquifers and summarized by 8 subregions across major oil-producing areas of central and southern California. The objectives of this study were to describe the distribution of groundwater near oil fields having total dissolved solids less than 10,000...
Groundwater discharge characteristics for selected streams within the Loup River Basin, Nebraska, 2014–16
Christopher M. Hobza, Aaron R. Schepers
2018, Scientific Investigations Report 2018-5093
Streams in the Loup River Basin are sensitive to groundwater withdrawals because of the close hydrologic connection between groundwater and surface water. Groundwater discharge is the primary component of streamflow in the Loup River Basin and constitutes more than 90 percent of streamflow in the central part of the Sand...
Survival, travel time, and utilization of Yolo Bypass, California, by outmigrating acoustic-tagged late-fall Chinook salmon
Adam C. Pope, Russell W. Perry, Dalton J. Hance, Hal C. Hansel
2018, Open-File Report 2018-1118
Juvenile Chinook salmon (Oncorhynchus tshawytscha) migrating through California's Sacramento-San Joaquin River Delta toward the Pacific Ocean face numerous challenges to their survival. The Yolo Bypass is a broad floodplain of the Sacramento River that floods in about 70 percent of years in response to large, uncontrolled runoff events. As...
Refinement of a regression-based method for prediction of flow-duration curves of daily streamflow in the conterminous United States
Thomas M. Over, William H. Farmer, Amy M. Russell
2018, Scientific Investigations Report 2018-5072
Regional regression is a common tool used to estimate daily flow-duration curves (FDCs) at ungaged locations. In this report, several refinements to a particular implementation of the regional regression method for estimating FDCs are evaluated by consideration of different methodological options through a leave-one-out cross-validation procedure in the 19 major...
