Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 42704
Validation of a screening method for the detection of colistin-resistant E. coli containing mcr-1 in feral swine feces Validation of a screening method for the detection of colistin-resistant E. coli containing mcr-1 in feral swine feces
A method was developed and validated for the detection of colistin-resistant Escherichia coli containing mcr-1 in the feces of feral swine. Following optimization of an enrichment method using EC broth supplemented with colistin (1 µg/mL) and vancomycin (8 µg/mL), aliquots derived from 100 feral swine fecal samples were spiked with of one of five different mcr-1 positive E. coli strains...
Authors
Jeffrey C Chandler, Alan B. Franklin, Sarah N. Bevins, Kevin T Bentler, Jonas Bonnedahl, Christina Ahlstrom, Bledar Bisha, Susan A. Shriner
A 'weight of evidence' approach to evaluating structural equation models A 'weight of evidence' approach to evaluating structural equation models
It is possible that model selection has been the most researched and most discussed topic in the history of both statistics and structural equation modeling (SEM). The reason for this is because selecting one model for interpretive use from amongst many possible models is both essential and difficult. The published protocols and advice for model evaluation and selection in SEM studies...
Authors
James Grace
Eradication of peste des petits ruminants and the wildlife-livestock interface Eradication of peste des petits ruminants and the wildlife-livestock interface
Growing evidence suggests that multiple wildlife species can be infected with peste des petits ruminants virus (PPRV), with important consequences for the potential maintenance of PPRV in communities of susceptible hosts, and the threat that PPRV may pose to the conservation of wildlife populations and resilience of ecosystems. Significant knowledge gaps in the epidemiology of PPRV...
Authors
Amanda E. Fine, Mathieu Pruvot, Camila Benfield, Alexandre Caron, Giovanni Cattoli, Philippe Chardonnet, Maurizio Dioli, Thomas Dulu, Martin Gilbert, Richard Kock, Juan Lubroth, Jeffery Mariner, Stephane Ostrowski, Satya Parida, Sasan Fereidouni, Enkhtuvshin Shiilegdamba, Jonathan M. Sleeman, Claudia Schultz, Jean-Jacques Soula, Yves van der Stede, Berhe G. Tekola, Chris Walzer, Steffen Zuther, Feliz Njeumi
Organic compounds in produced waters from the Bakken Formation and Three Forks Formation in the Williston Basin, North Dakota Organic compounds in produced waters from the Bakken Formation and Three Forks Formation in the Williston Basin, North Dakota
The organic composition of produced waters (flowback and formation waters) from the middle member of the Bakken Formation and the Three Forks Formation in the Williston Basin, North Dakota were examined to aid in the remediation of surface contamination and help develop treatment methods for produced-water recycling. Twelve produced water samples were collected from the Bakken and Three...
Authors
Matthew S. Varonka, Tanya Gallegos, Anne L. Bates, Colin A. Doolan, William H. Orem
Small-scale water deficits after wildfires create long-lasting ecological impacts Small-scale water deficits after wildfires create long-lasting ecological impacts
Ecological droughts are deficits in soil–water availability that induce threshold-like ecosystem responses, such as causing altered or degraded plant-community conditions, which can be exceedingly difficult to reverse. However, 'ecological drought' can be difficult to define, let alone to quantify, especially at spatial and temporal scales relevant to land managers. This is despite a...
Authors
Rory O’Connor, Matthew J. Germino, David M Barnard, Caitlin M. Andrews, John B. Bradford, David S. Pilliod, Robert S. Arkle, Robert K Shriver
Abundance and productivity of marbled murrelets (Brachyramphus marmoratus) off central California during the 2019 breeding season Abundance and productivity of marbled murrelets (Brachyramphus marmoratus) off central California during the 2019 breeding season
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, evaluation of...
Authors
Jonathan J. Felis, Emily C. Kelsey, Josh Adams, Cheryl Horton, Laura White
Global plant trait relationships extend to the climatic extremes of the tundra biome Global plant trait relationships extend to the climatic extremes of the tundra biome
The majority of variation in six traits critical to the growth, survival and reproduction of global plant species is thought to be organised along just two dimensions, corresponding to strategies of plant size and resource acquisition. However, it is unknown whether global plant trait relationships extend to climatic extremes, and if these interspecific relationships are confounded by...
Authors
H. J. D. Thomas, A. D. Bjorkman, I. H. Myers-Smith, S.C. Elmendorf, Jens Kattge, Sandra Diaz, Mark Vellend, D. Blok, J. H. C. Cornelissen, B. C. Forbes, G. H. R. Henry, R.D. Hollister, S. Normand, Janet S. Prevey, C. Rixen, G. Schaepman-Strub, M. Wilmking, S. Wipf, W.K. Cornwell, P.S.A. Beck, D. Georges, S.J. Goetz, K. C. Guay, Nadja Ruger, N. A. Soudzilovskaia, Marko J. Spasojevic, Juha Alatalo, H. D. Alexander, A. Anadon-Rosell, S. Angers-Blondin, M. teBeest, L. T. Berner, R. G. Bjork, A. Buchwal, A. Buras, M. Carbognani, K. S. Christie, L. S. Collier, E. J. Cooper, B. Elberling, A. Eskelinen, E. R. Frei, O. Grau, P. Grogan, M. Hallinger, M. M. P. D. Heijmans, L. Hermanutz, J. M. G. Hudson, J.F. Johnstone, K. Hulber, M. Iturrate-Garcia, Colleen M. Iversen, F. Jaroszynska, E, Kaarlejarvi, A. Kulonen, L. J. Lamarque, T. C. Lantz, E. Levesque, C.E. Little, Anders Michelsen, A. Milbau, Jacob Nabe-Nielsen, S. S. Nielsen, J. M. Ninot, S. F. Oberbauer, J. Olofsson, V. G. Onipchenko, A. Petraglia, S. B. Rumpf, R. Shetti, J. D. M. Speed, K.N. Suding, K.D. Tape, M. Tomaselli, A. J. Trant, U. A. Treier, M. Tremblay, S. E. Venn, T. Vowles, S. Weijers, P. A. Wookey, T. J. Zamin, M. Bahn, B. Blonder, P. M. van Bodegom, B. Bond-Lamberty, G. Campetella, B. E. L. Cerabolini, F. S. Chapin, Joseph M. Craine, M. Dainese, W. A. Green, S. Jansen, M. Kleyer, P. Manning, U. Niinemets, Y. Onoda, W. A. Ozinga, J. Penuelas, P. Poschlod, Peter B. Reich, B. Sandel, B. S. Schamp, S. N. Sheremetiev, F. T. de Vries
Groundwater quality and geochemistry of West Virginia’s southern coal fields Groundwater quality and geochemistry of West Virginia’s southern coal fields
Coal mining has been the dominant industry and land use in West Virginia’s southern coal fields since the mid-1800s. Mortality rates for a variety of serious chronic conditions, such as diabetes, heart disease, and some forms of cancer in Appalachian coal mining regions, are higher than in areas lacking substantial coal mining activity within the Appalachian Region or elsewhere in the...
Authors
Mark D. Kozar, Mitchell A. McAdoo, Karl B. Haase
Structural equation modeling Structural equation modeling
This chapter introduces background and historical information on how structural equation modeling (SEM) came to be developed. Then, the main differences between SEM and earlier multivariate methods are explained. The chapter describes three main applications of SEM: path analysis, factor analysis, and hybrid models. Some computer programs are recommended for these applications. The step...
Authors
Matt Miller, Ivana Tasic, Torrey Lyons, Reid Ewing, James B. Grace
Intrinsic prey preference and selection of the giant gartersnake: A threatened predator in a nonnative prey-dominated community Intrinsic prey preference and selection of the giant gartersnake: A threatened predator in a nonnative prey-dominated community
The introduction of exotic species into an environment can introduce great change in the trophic dynamics of native species. This is of even greater concern if the native species is of conservation concern. The giant gartersnake, Thamnophis gigas, an endemic predator of the Central Valley of California and a species of conservation concern at the state and federal levels, has declined as...
Authors
Julia Ersan, Brian J. Halstead, Erica L Wildy, Michael L. Casazza, Glenn D. Wylie
Louisiana Adaptive Management Status and Improvement Report: Vision and Recommendations Louisiana Adaptive Management Status and Improvement Report: Vision and Recommendations
As part of the process to increase implementation of adaptive management for ecosystem-based coastal restoration within Louisiana, we aim for this report to be broadly applicable across planning processes as well as funding and implementing entities. It compiles technical knowledge and guidance summarized as key findings through the text which lead to eight priority recommendations to...
Authors
Bill Boshart, Morgan Crutcher, Angelina Freeman, Edward Haywood, Syed M. Khalil, Summer Langlois, Darin L. Lee, David Lindquist, Tommy E. McGinnis, James Pahl, Carol Parsons-Richards, Erin Plitsch, Rick Raynie, Robert Routon, Leigh Anne Sharp, John Troutman, Chuck Villarrubia, Todd Folse, Alyson Graugnard, Anne Hawes, Russ Joffrion, Wes Leblanc, Brian Lezina, Jim Pahl, Jody White, Craig Conzelmann, Ann Hijuelos, Sarai Piazza, Kathryn A. Spear, Gregory D. Steyer, Nanciann Regalado, John M. Tirpak, Courtney Schupp, Melissa Carle, Jaclyn Daly, Nicolas Eckhardt, Christy Fellas, Erin M. Fougeres, Stephen Heverly, Stacey Horstman, Jason Kroll, Mel Landry, Barbara A. Schroeder, Eric Weissberger, Sara Wissman, Treda Grayson, Patricia Taylor, Danny Wiegand, Mark Defley, Paulina Kolic, Harris Bienn, Tim J. B. Carruthers, Alyssa Dausman, Alaina Grace, Scott Hemmerling, Andrea Jerabek, Eric White, Ryan Clark, Coleen McHugh, Leland C Moss, Cyndhia Ramatchandirane, Amy Wold
Antibiotic resistance in marine microbial communities proximal to a Florida sewage outfall system Antibiotic resistance in marine microbial communities proximal to a Florida sewage outfall system
Water samples were collected at several wastewater treatment plants in southeast Florida, and water and sediment samples were collected along and around one outfall pipe, as well as along several transects extending both north and south of the respective outfall outlet. Two sets of samples were collected to address potential seasonal differences, including 38 in the wet season (June 2018...
Authors
Dale W. Griffin, Kenneth Banks, Kurtis Gregg, Sarah Shedler, Brian Walker