Marine distribution and foraging habitat highlight potential threats at sea for Endangered Bermuda Petrel Pterodroma cahow
André F Raine, Carina Gjerdrum, Isabeau Pratte, Jeremy Madeiros, Jonathan J. Felis, Josh Adams
2021, Endangered Species Research (45) 337-356
Marine spatial planning relies on detailed spatial information of marine areas to ensure effective conservation of species. To enhance our understanding of marine habitat use by the highly pelagic Bermuda petrel Pterodroma cahow, we deployed GPS tags on 6 chick-rearing adults in April 2019 and constructed a habitat suitability model using...
System characterization report on the China-Brazil Earth Resources Satellite-4A (CBERS–4A)
James C. Vrabel, Gregory L. Stensaas, Cody Anderson, Jon Christopherson, Minsu Kim, Seonkyung Park, Simon J. Cantrell
2021, Open-File Report 2021-1030-J
Executive SummaryThis report addresses system characterization of the China-Brazil Earth Resources Satellite-4A (CBERS–4A) multispectral remote sensing satellite and is part of a series of system characterization reports produced and delivered by the U.S. Geological Survey Earth Resources Observation and Science Cal/Val Center of Excellence in 2021. These reports present and...
Coalescent methods reconstruct contributions of natural colonization and stocking to origins of Michigan inland Cisco (Coregonus artedi)
Jared J. Homola, John D Robinson, Jeannette Kanefsky, Wendylee Stott, Gary Whelan, Kim T Scribner
2021, Journal of Great Lakes Research (47) 1781-1792
Fish population structure in previously glaciated regions is often influenced by natural colonization processes and human-mediated dispersal, including fish stocking. Endemic populations are of conservation interest because they may contain rare and unique genetic variation. While coregonines are native to certain Michigan inland lakes, some were stocked with fish from...
Discrete sample introduction module for quantitative and isotopic analysis of methane and other gases by cavity ring-down spectroscopy
John Pohlman, Michael Casso, Cedric Magen, Emile M. Bergeron
2021, Environmental Science & Technology (55) 12066-12074
Carbon dioxide (CO2) and methane (CH4) are natural and anthropogenic products that play a central role in the global carbon cycle and regulating Earth’s climate. Applications utilizing laser absorption spectroscopy, which continuously measure concentrations and stable isotope ratios of these greenhouse gases,...
Evaluation of actual evapotranspiration rates from the Operational Simplified Surface Energy Balance (SSEBop) model in Florida and parts of Alabama and Georgia, 2000–17
Nicasio Sepulveda
2021, Scientific Investigations Report 2021-5072
Evapotranspiration (ET) is the water-vapor flux transported from the surface of the Earth into the atmosphere and is the sum of surface water directly evaporated and subsurface water transpired by plants. ET rates are commonly estimated by using potential or reference ET, which might differ from actual ET rates. Actual...
Estimation of dissolved-solids concentrations using continuous water-quality monitoring and regression models at four sites in the Yuma area, Arizona and California, January 2017 through March 2019
Jay R. Cederberg, Nicholas V. Paretti, Alissa L. Coes, Edyth Hermosillo, Lucia Andrade
2021, Scientific Investigations Report 2021-5080
Multiple linear regression models were developed to estimate dissolved-solids concentrations in water at four sites in the Yuma area between Imperial Dam, Arizona and California and the southerly international boundary with Mexico at San Luis, Arizona. Continuous and discrete water-quality data were collected at gaging stations in the Colorado River...
Seasonally dynamic nutrient modeling quantifies storage lags and time-varying reactivity across large river basins
Noah Schmadel, Judson Harvey, Gregory E. Schwarz
2021, Environmental Research Letters (16)
Nutrients that have gradually accumulated in soils, groundwaters, and river sediments in the United States over the past century can remobilize and increase current downstream loading, obscuring effects of conservation practices aimed at protecting water resources. Drivers of storage accumulation and release of nutrients are poorly understood at the spatial...
Nonlinear shifts in infectious rust disease due to climate change
Joan Dudney, Claire Willing, Adrian Das, Andrew M. Latimer, Jonathan C B Nesmith, John J. Battles
2021, Nature Communications (12)
Range shifts of infectious plant disease are expected under climate change. As plant diseases move, emergent abiotic-biotic interactions are predicted to modify their distributions, leading to unexpected changes in disease risk. Evidence of these complex range shifts due to climate change, however, remains largely speculative. Here, we combine a long-term...
The Holocene dynamics of Ryder Glacier and ice tongue in north Greenland
Matt O’Regan, Thomas M. Cronin, Brendan Reilly, Aage K. Olsen Alstrup, Laura Gemery, Anna Golub, Larry A. Mayer, Mathieu Morlighem, Matthias Moros, Ole L. Munk, Johan Nilsson, Christof Pearce, Henrieka Detlef, Christian Stranne, Flor Vermassen, Gabriel West, Martin Jakobsson
2021, The Cryosphere (15) 4073-4097
The northern sector of the Greenland Ice Sheet is considered to be particularly susceptible to ice mass loss arising from increased glacier discharge in the coming decades. However, the past extent and dynamics of outlet glaciers in this region, and hence their vulnerability to climate change, are poorly documented. In...
Thyroid disruption and oxidative stress in American kestrels following embryonic exposure to the alternative flame retardants, EHTBB and TBPH
CHristopher Goodchild, Natalie Karouna-Renier, Paula F. P. Henry, Robert J. Letcher, Sandra L. Schultz, Catherine M. Maddox, Thomas Bean, Lisa E. Peters, Vince P. Palace, Kimberly J. Fernie
2021, Environment International (157)
Brominated flame retardant chemicals, such as 2-ethylhexyl-2,3,4,5-tetrabromobenzoate (EHTBB) (CAS #: 183658–27-7) and bis(2-ethylhexyl)-2,3,4,5-tetrabromophthalate (TBPH) (CAS #: 26040–51-7), have been detected in avian tissues and eggs from remote regions. Exposure to EHTBB and TBPH has been shown to cause oxidative stress and altered thyroid function...
Drivers of extreme water levels in a large, urban, high-energy coastal estuary – A case study of the San Francisco Bay
Cornelis M. Nederhoff, Rohin Saleh, Babak Tehranirad, Liv M. Herdman, Li H. Erikson, Patrick L. Barnard, Mick Van der Wegen
2021, Coastal Engineering (170)
Reliable and long-term hindcast data of water levels are essential in quantifying return period and values of extreme water levels. In order to inform design decisions on a local flood control district level, process-based numerical modeling has proven an essential tool...
Random variable
Ricardo A. Olea
2021, Book chapter, Encyclopedia of Mathematical Geosciences
A random variable is a function that assigns a value in a sample space to an element of an arbitrary set (James 1992; Pawlowsky-Glahn et al. 2015). It is a model for a random experiment: the arbitrary set is an abstraction of the experimental conditions, the values taken...
A ground motion model for GNSS peak ground displacement
Dara Elyse Goldberg, Diego Melgar, Gavin P. Hayes, Valerie J. Sahakian, Brendan W. Crowell
2021, Bulletin of the Seismological Society of America (111) 2393-2407
We present an updated ground‐motion model (GMM) for Mw">MwMw 6–9 earthquakes using Global Navigation Satellite Systems (GNSS) observations of the peak ground displacement (PGD). Earthquake GMMs inform a range of Earth science and...
Is there tree senescence? The fecundity evidence
Tong Qiu, Marie-Claire Aavena Acuna, Robert A. Andrus, Davide Ascoli, Yves Bergeron, Roberta Berretti, Michal Bogdziewicz, Thomas Boivin, Raul Bonal, Thomas Caignard, Rafael Calama, Julio Camarero, Connie Clark, Benoit Courbaud, Sylvain Delzon, Sergio Donoso Calderon, William Farfan-Rios, Catherine A. Gehring, Gregory S. Gilbert, Cathryn H. Greenberg, Qinfeng Guo, Janneke Hille Ris Lambers, Hoshi Hoshizaki, Ines Ibanez, Valentin Journé, Christopher L. Kilner, Richard Kobe, WD Koenig, Georges Kunstler, Jalene M. LaMontagne, Mateusz Ledwon, James A. Lutz, Renzo Motta, Jonathan A. Myers, Thomas A. Nagel, Kyotaro Noguchi, Chase Nunez, Ian S. Pearse, Carlos Perez-Izquierdo, Lukasz Piechnik, John Poulson, Renata Poulton-Kamakura, Miranda D. Redmond, Chantal D. Reid, Kyle C. Rodman, C. Lane Scher, Harald Schmidt Van Marle, Barbara Seget, Shubhi Sharma, Miles Silman, Jennifer J. Swenson, Margaret Swift, Maria Uriarte, Giorgio Vacchiano, Renato Valencia, Andrew Vander Yacht, Thomas T. Veblen, Amy V. Whipple, Thomas G. Whitham, Andreas Wion, Joseph Wright, Kai Zhu, Jess K. Zimmerman, Magdalena Zywiec, James S. Clark
2021, Proceedings of the National Academy of Sciences (118)
Despite its importance for forest regeneration, food webs, and human economies, changes in tree fecundity with tree size and age remain largely unknown. The allometric increase with tree diameter assumed in ecological models would substantially overestimate seed contributions from large trees if fecundity eventually declines with...
Linking demographic rates to local environmental conditions: Empirical data to support climate adaptation strategies for Eleutherodactylus frogs
A.C. Rivera-Burgos, Jaime A. Collazo, Adam Terando, Krishna Pacifici
2021, Global Ecology and Conservation (28)
Conducting managed species translocations and establishing climate change refugia are adaptation strategies to cope with projected consequences of global warming, but successful implementation requires on-the-ground validation of demographic responses to transient climate conditions. Here we estimated the effect of nine...
Identifying the ecological and management implications of mangrove migration in the northern Gulf of Mexico
Michael Osland
2021, Report
Climate change is transforming ecosystems and affecting ecosystem goods and services. Along the Gulf of Mexico and Atlantic coasts of the southeastern United States, the frequency and intensity of extreme freeze events greatly influences whether coastal wetlands are dominated by freeze-sensitive woody plants (mangrove forests) or freeze-tolerant grass-like plants (salt...
Disruption of the Francisella noatunensis orientalis pdpA gene results in virulence attenuation and protection in zebrafish
John D. Hansen, Karina Ray, Po-Jui Chen, Susan Yun, Diane G. Elliott, Carla M. Conway, Michael Culcutt, Maureen K. Purcell, Timothy J Welch, John Patrick Bellah, Ellie Maureen Dalsky, Justin Blaine Greer, Esteban Soto
2021, Infection and Immunity (89)
Several Francisella spp. including F. noatunensis are regarded as important emerging pathogens of wild and farmed fish. However, very few studies have investigated the virulence factors that allow these bacterial species to be pathogenic in fish. The Francisella Pathogenicity Island (FPI) is a well-described, gene-dense region encoding major virulence factors for the...
Amphibian population responses to mitigation: Relative importance of wetland age and design
Emily Bea Oja, Leah S Swartz, Erin L. Muths, Blake R. Hossack
2021, Ecological Indicators (131)
Wetland creation is a common practice to mitigate for the loss of natural wetlands. However, there is still uncertainty about how effectively created wetlands replace habitat provided by natural wetlands. This uncertainty is due in part because post-construction monitoring of biological...
Physics-guided recurrent graph model for predicting flow and temperature in river networks
Xiaowei Jia, Jacob Aaron Zwart, Jeffrey Michael Sadler, Alison P. Appling, Samantha K. Oliver, Steven L. Markstrom, Jared Willard, Shaoming Xu, Michael Steinbach, Jordan Read, Vipin Kumar
2021, Conference Paper, Proceedings of the 2021 SIAM International Conference on Data Mining (SDM)
This paper proposes a physics-guided machine learning approach that combines machine learning models and physics-based models to improve the prediction of water flow and temperature in river networks. We first build a recurrent graph network model to capture the interactions among multiple segments in the river network....
Wetland selection by female Ring-Necked Ducks (Aythya collaris) in the Southern Atlantic Flyway
Tori D. Mezebish, Richard B. Chandler, Glenn H. Olsen, Michele Goodman, Frank C. Rohwer, Nicholas J. Meng
2021, Wetlands (41)
On the wintering grounds, wetland selection by waterfowl is influenced by spatiotemporal resource distribution. The ring-necked duck (Aythya collaris) winters in the southeastern United States where a disproportionate amount of Atlantic Flyway ring-necked duck harvest occurs. We quantified female ring-necked duck selection for wetland characteristics during and after the 2017-2018...
Structured decision making and optimal bird monitoring in the northern Gulf of Mexico
Auriel Fournier, R. Randy Wilson, James E. Lyons, Jeffrey S. Gleason, Evan M. Adams, Laurel M. Barnhill, Janell M. Brush, Robert J. Cooper, Stephen J. DeMaso, Melanie J.L. Driscoll, Mitchell J. Eaton, Peter C. Frederick, Michael G. Just, Michael A. Seymour, John M. Tirpak, Mark S. Woodrey
2021, Open-File Report 2020-1122
The avian conservation community struggles to design and implement large scale, long-term coordinated bird monitoring programs within the northern Gulf of Mexico due to the complexity of the conservation enterprise in the region; this complexity arises from the diverse stakeholders, multiple jurisdictions, complex ecological processes, myriad habitats, and over 500...
Evaluating the state-of-the-art in remote volcanic eruption characterization Part II: Ulawun volcano, Papua New Guinea
Kathleen McKee, Cassandra Marie Smith, Kevin Reath, Eveanjelene Snee, Sean Maher, Robin S. Matoza, Simon A Carn, Diana Roman, Larry G. Mastin, Kyle R. Anderson, David Damby, Ima Itikarai, Kila Mulina, Steve Saunders, Jelle D. Assink, Rodrigo de Negri Levia, Anna Perttu
2021, Journal of Geophysical Research (420)
Retrospective eruption characterization is valuable for advancing our understanding of volcanic systems and evaluating our observational capabilities, especially with remote technologies (defined here as a space-borne system or non-local, ground-based instrumentation which include regional and remote infrasound sensors). In June 2019, the open-system Ulawun volcano, Papua New Guinea, produced a VEI 4...
Cohesive sediment modeling in a shallow estuary: Model and environmental implications of sediment parameter variation
Rachel Allen, Jessica R. Lacy, Andrew W. Stevens
2021, Journal of Geophysical Research--Oceans (126)
Numerical models of sediment transport in estuarine systems rely on parameter values that are often poorly constrained and can vary on timescales relevant to model processes. The selection of parameter values can affect the accuracy of model predictions, while environmental variation of these parameters can impact the...
Historical floods and geomorphic change in the lower Little Colorado River during the late 19th to early 21st centuries
Joel A. Unema, David J. Topping, Keith Kohl, Michael J. Pillow, Joshua J. Caster
2021, Scientific Investigations Report 2021-5049
The Little Colorado River is a major tributary to the Colorado River with a confluence at the boundary between Marble and Grand Canyons within Grand Canyon National Park, Arizona. The bedrock gorge of the lower Little Colorado River is home to the largest known population of Gila cypha (humpback chub),...
Oyster model inventory: Identifying critical data and modeling approaches to support restoration of oyster reefs in coastal U.S. Gulf of Mexico waters
Megan K. La Peyre, Danielle A. Marshall, Shaye E. Sable
2021, Open-File Report 2021-1063
Executive SummaryAlong the coast of the U.S. Gulf of Mexico, the eastern oyster (Crassostrea virginica) plays important ecological and economic roles. Commercial landings from this region account for more than 50 percent of all U.S. landings; these oyster reefs also provide varied ecosystem services, including nursery habitat for many fish...
