Characterization of groundwater recharge and flow in California's San Joaquin Valley from InSAR-observed surface deformation
W.R. Neely, A.A. Borsa, J.A. Burney, M.C. Levy, F. Silverii, Michelle Sneed
2021, Water Resources Research (57)
Surface deformation in California's Central Valley (CV) has long been linked to changes in groundwater storage. Recent advances in remote sensing have enabled the mapping of CV deformation and associated changes in groundwater resources at increasingly higher spatiotemporal resolution. Here, we use interferometric synthetic aperture radar...
The enigma of the Předmostí protodogs. A comment on Prassack et al. 2020
Luc A. A. Janssens, Myriam Boudadi-Maligne, L. David Mech, Dennis Lawler
2021, Journal of Archaeological Science (126)
Prassack et al. (2020) analyzed dental microwear in a sample of canids from the Gravettian site of Předmostí that had been identified as either Paleolithic dogs or Pleistocene wolves (n = 10 in each group), accepting that the morphological differences between the groups validly distinguished the (self-domesticating) protodogs from wolves. The authors then...
Greenhouse gas emissions from an arid-zone reservoir and their environmental policy significance: Results from existing global models and an exploratory dataset
Sarah Waldo, Bridget Deemer, Lucas S. Bair, Jake J. Beaulieu
2021, Environmental Science and Policy (120) 53-62
Reservoirs in arid regions often provide critical water storage but little is known about their greenhouse gas (GHG) footprint. While there is growing appreciation of the role reservoirs play as GHG sources, there is a lack of understanding of GHG emission dynamics from reservoirs in...
The tide turns: Episodic and localized cross-contamination of a California coastline with cyanotoxins
Avery O. Tatters, Jayme Smith, Raphael M. Kudela, Kendra Hayashi, Meredith D. A. Howard, Ariel Donovan, Keith A. Loftin, David A. Caron
2021, Harmful Algae (103)
The contamination of coastal ecosystems from a variety of toxins of marine algal origin is a common and well-documented situation along the coasts of the United States and globally. The occurrence of toxins originating from cyanobacteria along marine coastlines is much less...
Extent, configuration and diversity of burned and forested areas predict bat richness in a fire-maintained forest
R. V. Blakey, Elisabeth B. Webb, D. C. Kesler, R. B. Siegel, D. Corcoran, J. S. Cole, Matthew Johnson
2021, Landscape Ecology (36) 1101-1115
ContextFire transforms, fragments and sometimes maintains forests, creating mosaics of burned and unburned patches. Highly mobile animals respond to resources in the landscape at a variety of spatial scales, yet we know little about their landscape-scale relationships with fire.ObjectivesWe aimed to identify drivers of bat richness...
Evidence of economical territory selection in a cooperative carnivore
Sarah N. Sells, Michael S. Mitchell, Kevin M. Podruzny, Justin A. Gude, Allison Keever, Diane K. Boyd, T.D. Smucker, Abigail A. Nelson, Tyler W. Parks, Nathan J. Lance, Michael S. Ross, Robert M. Inman
2021, Proceedings of the Royal Society B: Biological Sciences (288)
As an outcome of natural selection, animals are probably adapted to select territories economically by maximizing benefits and minimizing costs of territory ownership. Theory and empirical precedent indicate that a primary benefit of many territories is exclusive access to food resources, and primary costs of defending and using space are...
Preconditioning by sediment accumulation can produce powerful turbidity currents without major external triggers
Lewis Bailey, Michael Clare, Kurt J. Rosenberger, Matthieu J.B. Cartigny, Peter J. Talling, Charles K. Paull, Roberto Gwiazda, Daniel Parsons, Stephen Simmons, Jingping Xu, Ivan Haigh, Katherine L. Maier, Mary McGann, Eve M. Lundsten
2021, Earth and Planetary Science Letters (562)
Turbidity currents dominate sediment transfer into the deep ocean, and can damage critical seabed infrastructure. It is commonly inferred that powerful turbidity currents are triggered by major external events, such as storms, river floods, or earthquakes. However, basic models for turbidity current...
Stationary hydroacoustics demonstrates vessel avoidance biases during mobile hydroacoustic surveys of alewife in Lake Ontario
Conner Elliot, Jeremy Holden, Michael Connerton, Brian Weidel, Bruce Tufts
2021, Journal of Great Lakes Research 514-521
Mobile hydroacoustic surveys are routinely used to estimate pelagic fish abundance. In the Great Lakes, alewife are commonly surveyed with mobile hydroacoustics, however, their behavior often has them associated with epilimnetic habitats which increases the potential for vessel avoidance to bias hydroacoustic observations. Abundance...
When introduced prey violates trophic hierarchy: Conservation of an endangered predator
Richard Kim, Brian J. Halstead, Eric J. Routman, Julie Anderson
2021, Biological Conservation (256)
Introduced species often disrupt established food webs, but some native predators can come to rely on introduced prey. Understanding the net effects of the non-natives on imperiled predators is crucial for planning conservation measures. The invasive American bullfrog (Lithobates catesbeianus) can be prey,...
Organic petrographic evaluation of carbonaceous material in sediments of the Kinnickinnic River, Milwaukee, WI, U.S.A.
Brett J. Valentine, John H Krahling, Stephen D. Mueller
2021, Science of the Total Environment (782)
This study examines the use of organic petrology techniques to quantify the amount of coal and carbonaceous combustion by-products (i.e., coke, coal tar/pitch, cenospheres) in sediments taken from the Kinnickinnic River adjacent to the former site of the Milwaukee Solvay Coke and Gas Company....
Automated telemetry reveals post-reintroduction exploratory behavior and movement patterns of an endangered corvid, ʻAlalā (Corvus hawaiiensis) in Hawaiʻi, USA
Jennifer R Smetzer, Alison L Greggor, Kristina L. Paxton, Bryce Masuda, Eben H. Paxton
2021, Global Ecology and Conservation (26)
Continuous movement monitoring is a powerful tool for evaluating reintroduction techniques and assessing how well reintroduced animals are adjusting to the wild. However, to date, continuous monitoring has only occurred for large-bodied species capable of carrying heavy tracking devices. In this study we used...
Causes of delayed outbreak responses and their impacts on epidemic spread
Y Tao, William J. M. Probert, Katriona Shea, Michael C. Runge, Kevin D. Lafferty, Michael J. Tildesley, Matthew J. Ferrari
2021, Journal of the Royal Society Interface (18)
Livestock diseases have devastating consequences economically, socially and politically across the globe. In certain systems, pathogens remain viable after host death, which enables residual transmissions from infected carcasses. Rapid culling and carcass disposal are well-established strategies for stamping out an outbreak and limiting its impact; however, wait-times...
Weather and distance to fire refugia limit landscape‐level occurrence of fungal disease in an exotic annual grass
Cara Applestein, Allison Barbara Simler-Williamson, Matthew J. Germino
2021, Journal of Ecology (109) 2247-2260
The enemy release hypothesis proposes that invasion by exotic plant species is driven by their release from natural enemies (i.e. herbivores and pathogens) in their introduced ranges. However, in many cases, natural enemies, which may be introduced or managed to regulate invasive species, may fail to impact target host...
Global political responsibility for the conservation of albatrosses and large petrels
Martin Beal, Maria P. Dias, Richard A. Phillips, Steffen Oppel, Carolina Hazin, Elizabeth J. Pearmin, Josh Adams, David J Anderson, Michelle Antolos, Javier A Arata, Jose Manuel Arcos, John P. Y. Arnould, Jill Awkerman, Elizabeth Bell, Mike Bell, Mark Carey, Ryan Carle, Thomas A Clay, Jaimie Cleeland, Valentina Colodro, Melinda G. Conners, Marta Cruz-Flores, Richard Cuthbert, Karine Delord, Lorna Deppe, Ben J Dilley, Herculano A. Dinis, Graeme Elliot, Fernanda de Felipe, Jonathan J. Felis, Manuela G. Forero, Amanda Freeman, Akira Fukuda, Jacob Gonzalez-Solis, Jose Pedro Granadeiro, April Hedd, Peter Hodum, Jose Manuel Igual, Audrey Jaeger, Todd J Landers, Le Corre Matthieu, Azwianewi Makhado, Benjamin Metzger, Teresa Militao, William A Montevecchi, Virginia Morera-Pujol, Leia Navarro-Herrero, Deon Nel, David Nicholls, Daniel Oro, Ridha Ouni, Kiyoaki Ozaki, Flavio Quintana, Raul Ramos, Tim Reid, Jose Manuel Reyes-Gonzalez, Christopher Robertson, Graham Robertson, Mohamed Salah Romdhane, Peter G. Ryan, Paul Sagar, Fumio Sato, Stefan Schoombie, R. Paul Scofield, Scott A. Shaffer, Nirmal Jivan Shah, Kim L Stevens, Christopher Surman, Robert M. Suryan, Akinori Takahashi, Vikash Tatayah, Graeme Taylor, David R. Thompson, Leigh Torres, Kath Walker, Ross M. Wanless, Susan M. Waugh, Henri Weimerskirch, Takashi Yamamoto, Zuzana Zajkova, Laura Zango, Paulo Catry
2021, Science Advances (7)
Migratory marine species cross political borders and enter the high seas, where the lack of an effective global management framework for biodiversity leaves them vulnerable to threats. Here, we combine 10,108 tracks from 5775 individual birds at 87 sites with data on breeding population sizes to estimate the relative year-round...
The smell of success: Reproductive success related to rub behavior in brown bears
Andrea T. Morehouse, Anne E. Loosen, Tabitha A. Graves, Mark S. Boyce
2021, PLoSOne (16)
Several species of bears are known to rub deliberately against trees and other objects, but little is known about why bears rub. Patterns in rubbing behavior of male and female brown bears (Ursus arctos) suggest that scent marking via rubbing functions to communicate among potential mates or competitors. Using DNA...
Groundwater management process simulations using an updated version of the three-dimensional numerical model of groundwater flow in northern Utah Valley, Utah County, Utah
Bernard J. Stolp, Lynette E. Brooks
2021, Scientific Investigations Report 2021-5010
Groundwater is a primary source of drinking water in northern Utah County. The groundwater system is recharged mainly from precipitation in the adjacent Wasatch Mountains and infiltration of streamflow. In 2004, groundwater withdrawals were estimated to be roughly 44,500 acre-feet per year. In 2016, groundwater withdrawals were estimated to be...
An increase in the slope of the concentration-discharge relation for total organic carbon in major rivers in New England, 1973 to 2019
Thomas G. Huntington, Michael Wieczorek
2021, Science of the Total Environment (778)
The mobilization and transport of organic carbon (OC) in rivers and delivery to the near-coastal ocean are important processes in the carbon cycle that are affected by both climate and anthropogenic activities. Riverine OC transport can affect carbon sequestration,...
Spatial variation in population dynamics of northern Great Plains piping plovers
Rose J. Swift, Michael J. Anteau, Kristen S. Ellis, Megan M. Ring, Mark H. Sherfy, Dustin L. Toy, David N. Koons
2021, Open-File Report 2020-1152
Metapopulation dynamics are determined not only by within-patch birth and death processes but also by between-patch movements of individuals (emigration and immigration). To conserve and manage a species that has a metapopulation structure, defined by local populations that are distributed among patches of suitable habitat, we need to understand each...
Chapter A6.4. Measurement of pH
U. S. Geological Survey
2021, Techniques and Methods 9-A6.4
The “National Field Manual for the Collection of Water-Quality Data” (NFM) provides guidelines and procedures for U.S. Geological Survey (USGS) personnel who collect data used to assess the quality of the Nation’s surface-water and groundwater resources. This chapter, NFM A6.4, provides guidance and protocols for the measurement of pH of...
The role of the Next Generation Lunar Scientists and Engineers (NextGen) group in lunar science and exploration
Ryan Watkins, Lillian R. Ostrach, Sarah Valencia, Amanda Stadermann, Lora Bleacher, Noah E. Petro, Tess Caswell, Amy Fagan, Erica Jawin, Heather Meyer, Deanna Phillips, Hannah O’Brien, Next Generation Lunar Scientists and Engineers Group
2021, Bulletin of the AAS (53)
Founded in 2008, the Next Generation Lunar Scientists and Engineers (NextGen) is a group of students and early career professionals who have a vision and passion for lunar science and exploration. NextGen organizes professional development opportunities through workshops and networking events that are designed to provide...
Procedures for field data collection, processing, quality assurance and quality control, and archiving of relative- and absolute-gravity surveys
Jeffrey R. Kennedy, Donald R. Pool, Robert L. Carruth
2021, Techniques and Methods 2-D4
Repeat microgravity surveys carried out using relative- and absolute-gravity meters are useful for identifying changes in subsurface mass, such as the volume of water stored in an aquifer. These surveys require careful field procedures to achieve the part-per-billion accuracy required to measure the small changes in gravity relevant for hydrologic...
Exploring biophysical linkages between coastal forestry management practices and aquatic bivalve contaminant exposure
Kaegan Scully-Engelmeyer, Elise F. Granek, Max Nielsen-Pincus, Andy Lanier, Steven S Rumrill, Patrick W. Moran, Elena Nilsen, Michelle L. Hladik, Lori Pillsbury
2021, Toxics (9)
Terrestrial land use activities present cross-ecosystem threats to riverine and marine species and processes. Specifically, pesticide runoff can disrupt hormonal, reproductive, and developmental processes in aquatic organisms, yet non-point source pollution is difficult to trace and quantify. In Oregon, U.S.A., state and federal forestry pesticide regulations, designed...
Genomic comparison of carbapenem-resistant Enterobacteriaceae from humans and gulls in Alaska
Christina Ahlstrom, Anna Frick, Catherine Pongratz, Kimberly Spink, Catherine Xavier, Jonas Bonnedahl, Andrew M. Ramey
2021, Journal of Global Antimicrobial Resistance (25) 23-25
ObjectivesWildlife may harbor clinically important antimicrobial resistant (AMR) bacteria, but the role of wildlife in the epidemiology of AMR bacterial infections in humans is largely unknown. In this study, we aimed to assess dissemination of theblaKPC carbapenemase gene among humans and gulls in Alaska.<h3...
Why is tree drought mortality so hard to predict?
Anna T Trugman, Leander D.L. Anderegg, William RL Anderegg, Adrian Das, Nathan L. Stephenson
2021, Trends in Ecology and Evolution (36) 520-523
Widespread tree mortality following droughts has emerged as an environmentally and economically devastating ‘ecological surprise’. It is well established that tree physiology is important in understanding drought-driven mortality; however, the accuracy of predictions based on physiology alone has been limited. We...
Beach placer mineral deposits along localized paleoshorelines of the western Interior Seaway, upper cretaceous Fox Hills sandstone, eastern Denver Basin, Colorado
Michael K O’Keeffe, Marieke Dechesne, Matthew J. Morgan, Stephen M Keller, Katherina Pfaff, Asha Mahatma, Alexander I Peretyatko
2021, Report
Beach placers deposited within the Fox Hills Sandstone along the eastern flank of the Denver Basin contain minerals deemed critical in 2018 by the U.S. Department of the Interior. These marine beach placers, or paleoplacers, were deposited in the Late Cretaceous along...
