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163 results.

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Publication Extents

Not all publications have extents, not all extents are completely accurate
A Bayesian framework for assessing extinction risk based on ordinal categories of population condition and projected landscape change
Daniel Bruce Fitzgerald, Andrew R Henderson, Kelly O. Maloney, Mary Freeman, John A. Young, Amanda E. Rosenberger, David C. Kazyak, David R. Smith
2020, Biological Conservation (253)
Many at-risk species lack standardized surveys across their range or quantitative data capable of detecting demographic trends. As a result, extinction risk assessments often rely on ordinal categories of risk based on explicit criteria or expert elicitation. This study demonstrates a...
Toxicity of carbon dioxide to freshwater fishes: Implications for aquatic invasive species management
Aaron R. Cupp, Justin Smerud, Linnea M Thomas, Diane L. Waller, David L. Smith, Richard A. Erickson, Mark P. Gaikowski
2020, Environmental Toxicology and Chemistry (ET&C) (39) 2247-2255
Carbon dioxide (CO2) has been approved by the US Environmental Protection Agency as a new aquatic pesticide to control invasive Asian carps and other aquatic nuisance species in the United States. However, limited CO2 toxicity data could make it challenging for resource managers to characterize the potential risk to nontarget species...
Estimates of groundwater discharge by evapotranspiration, Stump Spring and Hiko Springs, Clark County, southern Nevada, 2016–18
Michael T. Moreo, Susan G. Buto, David W. Smith, Nora C. Nelson
2020, Scientific Investigations Report 2020-5075
This report documents methodology and results of a study that estimated groundwater discharge by evapotranspiration (GWET) from phreatophytic vegetation in two desert riparian areas with ephemeral spring discharge in Clark County, southern Nevada. The phreatophytes consisted primarily of western honey mesquite [Prosopis glandulosa var. torreyana (L.D. Benson) M.C. Johnst.] at Stump Spring and...
Estimation of vital population rates to assess the relative health of mussel assemblages in the Upper Mississippi River
Teresa Newton, Steven J. Zigler, Patricia R. Ries, Mike Davis, David R. Smith
2020, Freshwater Biology (65) 1726-1739
Native freshwater mussels are a guild of benthic, filter feeding invertebrates that perform important ecological functions in rivers. Because of their long lifespans (30–50 years or longer), mussels are slow to respond to human‐induced alterations. Thus, development of sensitive indicators of mussel population responses to river conditions and management would...
Altitude of the potentiometric surface in the Mississippi River Valley alluvial aquifer, spring 2018
Virginia L. McGuire, Ronald C. Seanor, William H. Asquith, Anna M. Nottmeier, David C. Smith, Roland W. Tollett, Wade H. Kress, Kellan R. Strauch
2020, Scientific Investigations Map 3453
A potentiometric-surface map for spring 2018 was created for the Mississippi River Valley alluvial (MRVA) aquifer using available groundwater-altitude data from 1,126 wells completed in the MRVA aquifer and from the altitude of the top of the water surface in area rivers from 66 streamgages. Personnel from Arkansas Natural Resources...
Introduction to multi-criteria decision analysis
Sarah J. Converse
Michael C. Runge, Sarah J. Converse, John J. Lyons, David R. Smith, editor(s)
2020, Book chapter, Structured decision making: Case studies in natural resource management
No abstract available....
Introduction to structuring decisions
David R. Smith
2020, Book chapter, Structured decision making: Case studies in natural resource management
Decision structuring, also known as decision framing, provides the foundation and roadmap for analyzing a decision. For decisions that warrant a systematic approach, structuring begins with identifying the problem for analysis, which sounds simple but can be deceptively difficult because decision problems are often ill-formed at the start....
Introduction to prediction and the value of information
David R. Smith
2020, Book chapter, Structured decision making: Case studies in natural resource management
Predicting the consequences of alternative actions in terms of the objectives is central to decision making. Modeling in the broadest sense, from simple to complex and based on data or expert judgment, comprises the essential toolkit for making decision-relevant predictions. Gaps in knowledge and the resulting uncertainty can...
Strategic conservation of an imperiled freshwater mussel, the Dwarf Wedgemussel, in North Carolina
David R. Smith, Sarah E McCrae
2020, Book chapter, Structured decision making: Case studies in natural resource management
To be effective, managers of imperiled species must face the unavoidable tradeoff between conservation benefits and constrained budgets and must not be paralyzed by scientific uncertainty. Decision analysis can help meet these challenges when used to develop cost-effective strategies to recover or improve the status of species. The U.S. Fish...
Prioritizing uncertainties to improve management of a reintroduction program
Sarah J. Converse
Michael C. Runge, Sarah J. Converse, James E. Lyons, David R. Smith, editor(s)
2020, Book chapter, Structured decision making: Case studies in natural resource management
The success of wildlife reintroduction efforts rests on the demographic performance of released animals. Whooping Cranes in the eastern migratory population—reintroduced beginning in 2001—demonstrate adequate survival but poor reproduction. Managers and scientists have used an iterative process of learning and management to respond to this management challenge, but by 2015,...
Reserve network design for prairie-dependent taxa in South Puget Sound
Sarah J. Converse, Beth Gardner, Steve Morey
Michael C. Runge, Sarah J. Converse, James E. Lyons, David R. Smith, editor(s)
2020, Book chapter, Structured decision making: Case studies in natural resource management
Conserving species requires managing threats, including habitat loss. One approach to managing habitat loss is to identify and protect habitat in networks of reserves. Reserve network design is a type of resource allocation problem: how can we choose the most effective reserve network design given available resources? We undertook development...
A decision framework to analyze tide-gate options for restoration of the Herring River Estuary, Massachusetts
David R. Smith, Mitchell J. Eaton, Jill J. Gannon, Timothy P. Smith, Eric L. Derleth, Jonathan Katz, Kirk F. Bosma, Elise Leduc
2020, Open-File Report 2019-1115
The collective set of decisions involved with the restoration of degraded wetlands is often more complex than considering only ecological responses and outcomes. Restoration is commonly driven by a complex interaction of social, economic, and ecological factors representing the mandate of resource stewards and the values of stakeholders. The authors...
Geographic-specific capture-recapture models reveal contrasting migration and survival rates of adult horseshoe crabs (Limulus polyphemus)
Justin J. Bopp, Matthew Sclafani, David R. Smith, Kim McKown, Rachel Sysak, Robert Cerrato
2019, Estuaries and Coasts (42) 1570-1585
American horseshoe crabs (Limulus polyphemus) have varied migration patterns and harvesting pressure throughout their range, potentially leading to regional differences in population dynamics. Here, a multi-state mark–recapture model was used to estimate annual survival and exchange rates of adult horseshoe crabs across three geographic regions in Long Island, NY (South...
Science questions and knowledge gaps to study microbial transport and survival in Asian and African dust plumes reaching North America
Andrew C. Schuerger, David J. Smith, Dale W. Griffin, Daniel A. Jaffe, B. Wawrik, Susannah M. Burrows, Brent Christner, Cristina Gonzalez-Martin, Erin K. Lipp, David G. Schmale III, Hongbin Yu
2019, Aerobiologia (34) 425-435
The Sahara in North Africa and the Gobi and Taklamakan deserts in Asia are the primary sources of mobilized dust in the atmosphere, with regional or global airborne transport estimated at 2 to 5 billion tonnes per year. Annual Asian dust plumes take about 7 to 10 d to cross the...
Virus-like particle production in atmospheric eubacteria isolates
Nuria Teigell-Perez, Cristina Gonzalez-Martin, Basilio Valladares, David J. Smith, Dale W. Griffin
2019, Atmosphere (10)
Culturable eubacterial isolates were collected at various altitudes in Earth’s atmosphere to include ~1.5 m above ground in Tallahassee, Florida, USA, ~10.0 m above sea level over the mid-Atlantic ridge (~15oN), ~ 20 km above ground over the continental United States, ~20 km above sea level over the Pacific Ocean...
Geochemical and mineralogical maps, with interpretation, for soils of the conterminous United States
David B. Smith, Federico Solano, Laurel G. Woodruff, William F. Cannon, Karl J. Ellefsen
2019, Scientific Investigations Report 2017-5118
Between 2007 and 2013, the U.S. Geological Survey conducted a low-density (1 site per 1,600 square kilometers, 4,857 sites) geochemical and mineralogical survey of soils in the conterminous United States. The sampling protocol for the national-scale survey included, at each site, a sample from a depth of 0 to 5...
Long-term population dynamics of dreissenid mussels (Dreissena polymorpha and D. rostriformis): A cross-system analysis
David L. Strayer, Boris V. Adamovich, Rita Adrian, David C. Aldridge, Csilla Balogh, Lyubov E. Burlakova, Hannah Fried-Petersen, László G.-Tóth, Amy L. Hetherington, Thomas S. Jones, Alexander Y. Karatayev, Jacqueline B. Madill, Oleg A. Makarevich, J. Ellen Marsden, André L. Martel, Dan Minchin, Thomas F. Nalepa, Ruurd Noordhuis, Timothy J. Robinson, Lars G. Rudstam, Astrid N. Schwalb, David R. Smith, Alan D. Steinman, Jonathan M. Jeschke
2019, Ecosphere (10)
Dreissenid mussels (including the zebra mussel Dreissena polymorpha and the quagga mussel D. rostriformis) are among the world's most notorious invasive species, with large and widespread ecological and economic effects. However, their long‐term population dynamics are poorly known, even though these dynamics are critical to determining impacts and effective management. We gathered and analyzed...
Pesticides and pollinators: A socioecological synthesis
Douglas B. Sponsler, Christina M. Grozinger, Claudia Hitaj, Maj Rundlof, Cristina Botias, Aimee Code, Eric V. Lonsdorf, Andony P. Melthapoulos, David J. Smith, Sainath Suryanarayanan, Wayne E. Thogmartin, Neal M. Williams, Minghua Zhang, Margaret R. Douglas
2019, Science of the Total Environment (662) 1012-1027
The relationship between pesticides and pollinators, while attracting no shortage of attention from scientists, regulators, and the public, has proven resistant to scientific synthesis and fractious in matters of policy and public opinion. This is in part because the issue has been approached in a compartmentalized and intradisciplinary way, such that...
The Missouri groundwater-level observation network
David C. Smith
2019, Fact Sheet 2019-3009
The Missouri groundwater-level observation well network is a series of wells across the State of Missouri in which groundwater levels are monitored in real time and periodically. The wells monitor the water levels in multiple key aquifers, such as the Ozark aquifer in the Salem and Springfield Plateaus and the...
Linkages between hydrology and seasonal variations of nutrients and periphyton in a large oligotrophic subalpine lake
Ramon C. Naranjo, Richard G. Niswonger, David Smith, Donald O. Rosenberry, Sudeep Chandra
Richard G. Niswonger, David Smith, Donald O. Rosenberry, Sudeep Chandra, editor(s)
2019, Journal of Hydrology (568) 877-890
Periphyton is important to lake ecosystems, contributing to primary production, nutrient cycling, and benthic metabolism. Increases in periphyton growth in lakes can be indicative of changes in water quality, shifts in ecosystem structure, and increases in nutrient fluxes. In oligotrophic lakes, conservationists are interested in characterizing the influence of hydrological...
Airborne bacteria in Earth’s lower stratosphere resemble taxa detected in the troposphere: results from a new NASA aircraft bioaerosol collector (ABC)
David J. Smith, Jayamary D. Ravichandar, Sunit Jain, Dale W. Griffin, Hongbin Yu, Qian Tan, James Thissen, Terry Lusby, Patrick Nicoll, Sarah Shedler, P. Martinez, Alejandro Osorio, Jason Lechniak, Samuel Choi, Kayleen Sabino, Kathryn Iverson, Luisa Chan, Crystal Jaing, John McGrath
2019, Frontiers in Microbiology (9)
Airborne microorganisms in the upper troposphere and lower stratosphere remain elusive due to a lack of reliable sample collection systems. To address this problem, we designed, installed, and flight-validated a novel Aircraft Bioaerosol Collector (ABC) for NASA's C-20A that can make collections for microbiological research investigations up to altitudes of...
Distribution of mining-related trace elements in streambed and flood-plain sediment along the middle Big River and tributaries in the Southeast Missouri Barite District, 2012–15
David C. Smith, John G. Schumacher
2018, Scientific Investigations Report 2018-5103
Lead mining first began in the Big River watershed during the 1700s. Lead was the primary metal mined throughout most of the 1700s and early 1800s and it continued to be mined until the mid-1900s. Barite mining began in the middle part of the watershed in the mid- to late...
Investigating the mixing efficiencies of liquid-to-liquid chemical injection manifolds for aquatic invasive species management
Thomas J. Zolper, Aaron R. Cupp, David L. Smith
2018, Journal of Fluids Engineering (141) 1-14
Aquatic invasive species (AIS) have spread throughout the United States via major rivers and tributaries. Locks and dams positioned along affected waterways, specifically lock chambers, are being evaluated as potential management sites to prevent further expansion into new areas. Recent research has shown that infusion of chemicals (e.g., carbon dioxide)...