Estimating the impact of seep methane oxidation on ocean pH and dissolved inorganic radiocarbon along the U.S. mid‐Atlantic Bight
Fenix Garcia-Tigreros, Mihai Leonte, Carolyn D. Ruppel, Angel Ruiz-Angulo, DoongJoo Joung, Benjamin Young, John D. Kessler
2021, Journal of Geophysical Research- Biogeosciences (126)
Ongoing ocean warming can release methane (CH4) currently stored in ocean sediments as free gas and gas hydrates. Once dissolved in ocean waters, this CH4 can be oxidized to carbon dioxide (CO2). While it has been hypothesized that the CO2 produced from aerobic CH4 oxidation could enhance ocean acidification, a...
On the use of statistical analysis to understand submarine landslide processes and assess their hazard
Uri S. ten Brink, Eric L. Geist
2021, Book chapter, Understanding and reducing landslide disaster risk
Because of their inaccessibility, submarine landslides are typically studied individually and at great effort and expense to provide knowledge of the specific site conditions where these landslides occur. Statistical analysis of submarine landslide scars can offer generalized perspectives on the processes that initiate submarine landslides and can help toward hazard...
Progress and lessons learned from responses to landslide disasters
Brian D. Collins, Mark E. Reid, Jeffrey A. Coe, Jason W. Kean, Rex L. Baum, Randall W. Jibson, Jonathan W. Godt, Stephen Slaughter, Greg M. Stock
2021, Book chapter, Understanding and reducing landslide disaster risk
Landslides have the incredible power to transform landscapes and also, tragically, to cause disastrous societal impacts. Whereas the mechanics and effects of many landslide disasters have been analyzed in detail, the means by which landslide experts respond to these events has garnered much less attention. Herein, we evaluate nine landslide...
Identifying information gaps in predicting winter foraging habitat for juvenile Gulf Sturgeon
Leah L. Dale, James P. Cronin, Virginia Brink, Blair Tirpak, John M. Tirpak, William E. Pine III
2021, Transactions of the American Fisheries Society (150) 222-241
The Gulf Sturgeon Acipenser oxyrinchus desotoi is an anadromous species that inhabits Gulf of Mexico coastal waters from Louisiana to Florida and is listed as threatened under the U.S. Endangered Species Act. Seasonal cues (e.g., freshwater discharge) determine the timing of spawning and migration and may influence the...
Assessing the hydrologic and physical conditions of a drainage basin
Waite Osterkamp, Mark K. Briggs, David J. Dean, Alfredo Rodriquez
2021, Book chapter, Renewing our rivers—Stream corridor restoration in dryland regions
An assessment of a drainage basin and its stream corridor will provide the data and information needed to understand current biophysical conditions and trends. Developing an understanding of the drivers of change is the next essential step for restoration success (Osterkamp and Toy, 1997; Corenbilt et al., 2007; Briggs and...
Effect of organic matter concentration and characteristics on mercury mobilization and methylmercury production at an abandoned mine site
Chris S. Eckley, Todd P. Luxton, Brooks Stanfield, Austin K. Baldwin, JoAnn M. Holloway, John McKernan, Mark Johnson
2021, Environmental Pollution (271)
Thousands of abandoned mines throughout the western region of North America contain elevated total-mercury (THg) concentrations. Mercury is mobilized from these sites primarily due to erosion of particulate-bound Hg (THg-P). Organic matter-based soil amendments can promote vegetation growth on mine tailings, reducing erosion and...
Snowpack signals in North American tree rings
Bethany L. Coulthard, Kevin J. Anchukaitis, Gregory T. Pederson, Edward R Cook, Jeremy Littell, Dan J. Smith
2021, Environmental Research Letters (16)
Climate change has contributed to recent declines in mountain snowpack and earlier runoff, which in turn has intensified hydrological droughts in western North America. Climate model projections suggest that continued and severe snowpack reductions are expected over the 21st century, with profound consequences for ecosystems and human welfare. Yet the...
Spatial clustering of aftershocks impacts the performance of physics‐based earthquake forecasting models
Jeanne L. Hardebeck
2021, JGR Solid Earth (126)
I explore why physics‐based models of earthquake triggering rarely outperform statistical models in prospective testing, outside of limited spatial‐temporal windows. Pseudo‐prospective tests on suites of synthetic aftershock sequences show that a major factor is the level of unmodeled spatial clustering of the direct aftershocks triggered by the mainshock. The synthetic...
Sentinel coyote pathogen survey to assess declining black-footed ferret (Mustela nigripes) population in South Dakota, USA
Krysten L. Schuler, Michael Claymore, Hannah Schnitzler, Edward Dubovi, Tonie E. Rocke, Michael J. Perry, Dwight Bowman, Rachel Abbott
2021, Journal of Wildlife Diseases (57) 264-272
As part of the national recovery effort, endangered black-footed ferrets (Mustela nigripes) were reintroduced to the Cheyenne River Sioux Reservation in South Dakota, US in 2000. Despite an encouraging start, numbers of ferrets at the site have declined. In an effort to determine possible causes of the population decline, we...
A long-term geothermal observatory across subseafloor gas hydrates, IODP Hole U1364A, Cascadia accretionary prism
K. Elizabeth Becker, E. E. Davis, M. Hessemann, J. A. Collins, Jeffrey J. McGuire
2021, Frontiers in Earth Sciences (8)
We report 4 years of temperature profiles collected from May 2014 to May 2018 in Integrated Ocean Drilling Program Hole U1364A in the frontal accretionary prism of the Cascadia subduction zone. The temperature data extend to depths of nearly 300 m below seafloor (mbsf), spanning the gas hydrate stability zone at the...
Variation in black bass angler characteristics by stream size and accessibility in Oklahoma’s Ozark Highland streams
B. Chapagain, James M. Long, Andrew T. Taylor, O. Joshi
2021, North American Journal of Fisheries Management (41) 585-599
Fishing in streams and rivers is a popular outdoor recreation activity in eastern Oklahoma, where most anglers target black bass (Micropterus) species. Since the early 1990s, when the last assessment of black bass fishing in the region was conducted, broadscale factors such as harvesting behavior, state fishery regulations, and bass...
In‐situ mass balance estimates offshore Costa Rica
Joel Edwards, Jared W. Kluesner, Eli Silver, Rachel Lauer, Nathan Bangs, Brian Boston
2021, Geochemistry, Geophysics, Geosystems (22)
The Costa Rican convergent margin has been considered a type erosive margin, with erosional models suggesting average losses up to −153 km3/km/m.y. However, three‐dimensional (3D) seismic reflection and Integrated Ocean Drilling Program data collected offshore the Osa Peninsula images accretionary structures and vertical motions that conflict with the forearc basal erosion...
Canada goose survival and recovery rates in urban and rural areas of Iowa, USA
Benjamin Z. Luukkonen, Orrin E. Jones, Robert W. Klaver
2021, Journal of Wildlife Management (85) 283-292
Once extirpated from much of their North American range, temperate-breeding Canada geese (Branta canadensis maxima) have reached high abundance. As a result, focus has shifted from restoration to managing harvest and addressing human-goose conflict. Conflict persists or is increasing in urban areas throughout the Mississippi Flyway....
Survival and movement patterns of Rainbow Trout stocked in a groundwater-influenced warmwater stream
S. L. Wolf, Shannon K. Brewer
2021, North American Journal of Fisheries Management (41) 600-615
Stocking Rainbow Trout Oncorhynchus mykiss to create additional angling opportunities is common; however, the spatial and temporal dynamics of such stocking practices are unclear in groundwater-influenced, warmwater streams. Our objectives were to determine Rainbow Trout dispersal from a stocking location on Spavinaw Creek, Oklahoma and to quantify apparent survival of two cohorts...
Exploring relationships among stream health, human well-being, and demographics in Virginia, USA
Paul L. Angermeier, Marc J. Stern, Leigh Anne Krometis, Tyler L. Hemby
2021, Ecological Indicators (121)
Quantification of empirical relationships between ecosystem health and human well-being is uncommon at broad spatial scales. We used public data for Virginia (USA) counties to examine pairwise correlations among two indicators of stream health, thirteen indicators of human well-being, and four demographic metrics. Our indicators of stream health included the...
Recruitment dynamics of non-native largemouth bass within the Sacramento-San Joaquin delta
Brock Huntsman, Frederick V. Feyrer, Matthew J. Young, James A. Hobbs, Shawn Acuna, Joseph E. Kirsch, Brian Mahardja, Swee Teh
2021, Canadian Journal of Fisheries and Aquatic Sciences (78) 505-521
Largemouth bass (LMB; Micropterus salmoides) recruitment is limited by a critical developmental period during early life stages, but this mechanism may be less important within non-native habitats. We conducted boat electrofishing surveys in four tidal lakes of California’s Sacramento–San Joaquin Delta (SSJD) from 2010 to 2011 to describe introduced LMB recruitment...
Hydrogeomorphological controls on reach‐scale distributions of cichlid nest sites in a small neotropical river
Emily A. Buege, Peter C. Esselman, Sarah J. Praskievicz
2021, Ecology of Freshwater Fish (30) 244-255
The Cichlidae are among the most diversified families of fish in the Neotropics and represent an important component of aquatic biodiversity. Understanding cichlid nest‐site selection is important for assemblages facing uncertain futures due to species invasions and environmental change. This information could be used to predict how inter‐ and intraspecific...
Development of genetic baseline information to support the conservation and management of wild Brook Trout in North Carolina
David C. Kazyak, Barbara A. Lubinski, Jacob M Rash, Thomas C Johnson, Timothy L. King
2021, North American Journal of Fisheries Management (41) 626-638
Following centuries of declines, there is growing interest in conserving extant wild populations and reintroducing Brook Trout (Salvelinus fontinalis) populations of native ancestry. A population genetic baseline can enhance conservation outcomes and promote restoration success. Consequently, it is important to document existing patterns of genetic variation across the landscape and...
A global perspective on the influence of the COVID-19 pandemic on freshwater fish biodiversity
Steve J. Cooke, William M. Twardek, Abigail J. Lynch, Ian G. Cowx, Julian D. Olden, Simon Funge-Smith, Kai Lorenzen, Robert Arlinghaus, Yushen Chen, Olaf L. F. Weyl, Elizabeth A. Nyboer, Paulo S. Pompeu, Stephanie M. Carlson, John D. Koehn, Adrian C. Pinder, Rajeev Raghavan, Sui C. Phang, Aaron A. Koning, William W. Taylor, Devin M. Bartley, J. Robert Britton
2021, Biological Conservation (253) 108932
The COVID-19 global pandemic and resulting effects on the economy and society (e.g., sheltering-in-place, alterations in transportation, changes in consumer behaviour, loss of employment) have yielded some benefits and risks to biodiversity. Here, we considered the ways the COVID-19 pandemic has influenced (or may influence) freshwater fish biodiversity (e.g., richness,...
Effects of increased temperature on arctic slimy sculpin Cottus cognatus is mediated by food availability: Implications for climate change
Casey A. Pennock, Phaedra E. Budy, Carla Atkinson, Nick Barrett
2021, Freshwater Biology (66) 549-561
Lakes are vulnerable to climate change, and warming rates in the Arctic are faster than anywhere on Earth. Fishes are sensitive to changing temperatures, which directly control physiological processes. Food availability should partly dictate responses to climate change because energetic demands change with temperature, but few studies have simultaneously...
Strategic habitat conservation for beach mice: Estimating management scenario efficiencies
James P. Cronin, Blair Tirpak, Leah L. Dale, Virginia L. Robenski, John M. Tirpak, Bruce G. Marcot
2021, Journal of Wildlife Management (85) 324-339
The Perdido Key beach mouse (Peromyscus polionotus trissyllepsis), Choctawhatchee beach mouse (P. p. allophrys), and St. Andrew beach mouse (P. p. peninsularis) are 3 federally endangered subspecies that inhabit coastal dunes of Alabama and Florida, USA. Conservation opportunities for these subspecies are limited and costly. Consequently, well‐targeted efforts are required...
Evidence for continental-scale dispersal of antimicrobial resistant bacteria by landfill-foraging gulls
Christina Ahlstrom, Marielle L. van Toor, Hanna Woksepp, Jeffrey C Chandler, John Reed, Andrew B. Reeves, Jonas Waldenström, Alan B. Franklin, David C. Douglas, Jonas Bonnedahl, Andrew M. Ramey
2021, Article
Anthropogenic inputs into the environment may serve as sources of antimicrobial resistant bacteria and alter the ecology and population dynamics of synanthropic wild animals by providing supplemental forage. In this study, we used a combination of phenotypic and genomic approaches to characterize antimicrobial resistant indicator bacteria, animal telemetry to describe...
Identification of seasonal streamflow regimes and streamflow drivers for daily and peak flows in Alaska
Janet H. Curran, Frances E. Biles
2021, Water Resources Research (57)
Alaska is among northern high‐latitude regions where accelerated climate change is expected to impact streamflow properties, including seasonality and primary flow drivers. Evaluating changes to streamflow, including flood characteristics, across this large and diverse environment can be improved by identifying the distribution and influence of flow drivers. Using metrics of...
Characterizing physical properties of streambed interface sediments using in situ complex electrical conductivity measurements
Cheng-Hui Wang, Martin A. Briggs, Frederick Day-Lewis, L. Slater
2021, Water Resources Research (57)
Streambed sediment physical properties such as surface area, are difficult to quantify in situ but exert a high‐level control on a wide range of biogeochemical processes and sorption of contaminants. We introduce the use of complex electrical conductivity (CC) methods (also known as spectral induced polarization (SIP))...
Tungsten skarn mineral resource assessment of the Great Basin region of western Nevada and eastern California
Graham W. Lederer, Federico Solano, Joshua Aaron Coyan, Kevin Denton, Kathryn E. Watts, Celestine N. Mercer, Damon Bickerstaff, Matthew Granitto
2021, Journal of Geochemical Exploration (223)
A new quantitative mineral resource assessment for tungsten, a critical mineral commodity with highly concentrated production and a moderate risk of global supply disruption, was conducted for the Great Basin region of western Nevada and eastern California. This assessment was part of a larger effort focusing on three regions in...
