Publications
Collection of Publications provided or contributed by SSAR programs. Selecting an item you'll find additional information and program point of contacts.
Filter Total Items: 263
Overcoming equifinality: Leveraging long time series for stream metabolism estimation Overcoming equifinality: Leveraging long time series for stream metabolism estimation
The foundational ecosystem processes of gross primary production (GPP) and ecosystem respiration (ER) cannot be measured directly but can be modeled in aquatic ecosystems from subdaily patterns of oxygen (O2) concentrations. Because rivers and streams constantly exchange O2 with the atmosphere, models must either use empirical estimates of the gas exchange rate coefficient (K600) or...
Authors
Alison Appling, Robert O. Hall, Charles Yackulic, Maite Arroita
Can data from disparate long-term fish monitoring programs be used to increase our understanding of regional and continental trends in large river assemblages? Can data from disparate long-term fish monitoring programs be used to increase our understanding of regional and continental trends in large river assemblages?
Understanding trends in the diverse resources provided by large rivers will help balance tradeoffs among stakeholders and inform strategies to mitigate the effects of landscape scale stressors such as climate change and invasive species. Absent a cohesive coordinated effort to assess trends in important large river resources, a logical starting point is to assess our ability to draw...
Authors
Timothy Counihan, Ian Waite, Andrew Casper, David Ward, Jennifer Sauer, Elise Irwin, Colin Chapman, Brian Ickes, Craig Paukert, John Kosovich, Jennifer Bayer
By
Ecosystems Mission Area, Water Resources Mission Area, Science Synthesis, Analysis, and Research Program, Cooperative Research Units, Science Analytics and Synthesis (SAS) Program, Species Management Research Program, Oregon Water Science Center, Southwest Biological Science Center, Upper Midwest Water Science Center, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Development and release of phenological data products—A case study in compliance with federal open data policy Development and release of phenological data products—A case study in compliance with federal open data policy
In Autumn 2015, USA National Phenology Network (USA-NPN) staff implemented new U.S. Geological Survey (USGS) data-management policies intended to ensure that the results of Federally funded research are made available to the public. The effort aimed both to improve USA-NPN data releases and to provide a model for similar programs within the USGS. This report provides an overview of the...
Authors
Alyssa Rosemartin, Madison Langseth, Theresa Crimmins, Jake F. Weltzin
Demography of the Pacific walrus (Odobenus rosmarus divergens) in a changing Arctic Demography of the Pacific walrus (Odobenus rosmarus divergens) in a changing Arctic
The Pacific walrus (Odobenus rosmarus divergens) is a candidate to be listed as an endangered species under United States law, in part, because of climate change‐related concerns. While the population was known to be declining in the 1980s and 1990s, its recent status has not been determined. We developed Bayesian models of walrus population dynamics to assess the population by...
Authors
Rebecca Taylor, Mark Udevitz, Chadwick Jay, John Citta, Lori Quakenbush, Patrick Lemons, Jonathan Snyder
Solving a nomenclatural conundrum: Cernosvitovia crainensis (Mršić, 1989) and Aporrectodea macvensis Šapkarev in Mršić, 1991 (Lumbricidae) Solving a nomenclatural conundrum: Cernosvitovia crainensis (Mršić, 1989) and Aporrectodea macvensis Šapkarev in Mršić, 1991 (Lumbricidae)
This contribution deals with the names and authorship of two lumbricid taxa endemic to the Balkans (see Stojanović et al., this volume). Although their validity has never been questioned, it has been unclear up to now which publication has made these two species-group names available according to the rules of the International Code of Zoological Nomenclature (Articles in "the Code," ICZN...
Authors
David Nicolson, Csaba Csuzdi
The evolution, approval and implementation of the U.S. Geological Survey Science Data Lifecycle Model The evolution, approval and implementation of the U.S. Geological Survey Science Data Lifecycle Model
This paper details how the United States Geological Survey (USGS) Community for Data Integration (CDI) Data Management Working Group developed a Science Data Lifecycle Model, and the role the Model plays in shaping agency-wide policies. Starting with an extensive literature review of existing data Lifecycle models, representatives from various backgrounds in USGS attended a two-day...
Authors
John Faundeen, Vivian Hutchison
Integrating geographically isolated wetlands into land management decisions Integrating geographically isolated wetlands into land management decisions
Wetlands across the globe provide extensive ecosystem services. However, many wetlands – especially those surrounded by uplands, often referred to as geographically isolated wetlands (GIWs) – remain poorly protected. Protection and restoration of wetlands frequently requires information on their hydrologic connectivity to other surface waters, and their cumulative watershed‐scale effects...
Authors
Heather Golden, Irena F. Creed, Genevieve Ali, Nandita Basu, Brian Neff, Mark Rains, Daniel McLaughlin, Laurie Alexander, Ali Ameli, Jay Christensen, Grey Evenson, Charles Jones, Charles R. Lane, Megan Lang
Landscape context and the biophysical response of rivers to dam removal in the United States Landscape context and the biophysical response of rivers to dam removal in the United States
Dams have been a fundamental part of the U.S. national agenda over the past two hundred years. Recently, however, dam removal has emerged as a strategy for addressing aging, obsolete infrastructure and more than 1,100 dams have been removed since the 1970s. However, only 130 of these removals had any ecological or geomorphic assessments, and fewer than half of those included before- and...
Authors
Melissa Foley, Francis Magilligan, Christian Torgersen, Jon Major, Chauncey Anderson, Patrick J. Connolly, Daniel Wieferich, Patrick Shafroth, James Evans, Dana Infante, Laura Craig
By
Ecosystems Mission Area, Water Resources Mission Area, Science Synthesis, Analysis, and Research Program, Science Analytics and Synthesis (SAS) Program, Forest and Rangeland Ecosystem Science Center, John Wesley Powell Center for Analysis and Synthesis, Oregon Water Science Center, Pacific Coastal and Marine Science Center
Mapping burned areas using dense time-series of Landsat data Mapping burned areas using dense time-series of Landsat data
Complete and accurate burned area data are needed to document patterns of fires, to quantify relationships between the patterns and drivers of fire occurrence, and to assess the impacts of fires on human and natural systems. Unfortunately, in many areas existing fire occurrence datasets are known to be incomplete. Consequently, the need to systematically collect burned area information...
Authors
Todd Hawbaker, Melanie Vanderhoof, Yen-Ju Beal, Joshua Takacs, Gail Schmidt, Jeff Falgout, Brad Williams, Nicole Brunner, Megan K. Caldwell, Joshua Picotte, Stephen Howard, Susan Stitt, John Dwyer
Seven recommendations to make your invasive alien species data more useful Seven recommendations to make your invasive alien species data more useful
Science-based strategies to tackle biological invasions depend on recent, accurate, well-documented, standardized and openly accessible information on alien species. Currently and historically, biodiversity data are scattered in numerous disconnected data silos that lack interoperability. The situation is no different for alien species data, and this obstructs efficient retrieval...
Authors
Quentin Groom, Tim Adriaens, Peter Desmet, Annie Simpson, Aaike De Wever, Ioannis Bazos, Ana Cardoso, Lucinda Charles, Anastasia Christopoulou, Anna Gazda, Harry Helmisaari, Donald Hobern, Melanie Josefsson, Frances Lucy, Dragana Marisavljevic, Tomasz Oszako, Jan Pergl, Olivera Petrovic-Obradovic, Celine Prevot, Hans Ravn, Gareth Richards, Alain Roques, Helen Roy, Marie-Anne Rozenberg, Riccardo Scalera, Elena Tricarico, Teodora Trichkova, Diemer Vercayie, Argyro Zenetos, Sonia Vanderhoeven
Grand challenges for integrated USGS science — A workshop report Grand challenges for integrated USGS science — A workshop report
Executive Summary The U.S. Geological Survey (USGS) has a long history of advancing the traditional Earth science disciplines and identifying opportunities to integrate USGS science across disciplines to address complex societal problems. The USGS science strategy for 2007–2017 laid out key challenges in disciplinary and interdisciplinary arenas, culminating in a call for increased focus...
Authors
Karen E. Jenni, Martin Goldhaber, Julio Betancourt, Jill Baron, Sky Bristol, Mary Cantrill, Paul Exter, Michael Focazio, John Haines, Lauren Hay, Leslie Hsu, Victor Labson, Kevin Lafferty, K. Ludwig, Paul Milly, Toni Morelli, Suzette Morman, Nedal T. Nassar, Timothy R. Newman, Andrea Ostroff, Jordan Read, Sasha Reed, Carl Shapiro, Richard Smith, Ward Sanford, Terry Sohl, Edward Stets, Adam Terando, Donald Tillitt, Michael Tischler, Patricia Toccalino, David Wald, Mark Waldrop, Anne Wein, Jake Weltzin, Christian Zimmerman
Benchmarking computational fluid dynamics models of lava flow simulation for hazard assessment, forecasting, and risk management Benchmarking computational fluid dynamics models of lava flow simulation for hazard assessment, forecasting, and risk management
Numerical simulations of lava flow emplacement are valuable for assessing lava flow hazards, forecasting active flows, designing flow mitigation measures, interpreting past eruptions, and understanding the controls on lava flow behavior. Existing lava flow models vary in simplifying assumptions, physics, dimensionality, and the degree to which they have been validated against analytical...
Authors
Hannah Dietterich, Einat Lev, Jiangzhi Chen, Jacob Richardson, Katharine V. Cashman