Agent-based models for collective animal movement: Proximity-induced state switching
Andrew B. Hoegh, Frank T. van Manen, Mark A. Haroldson
2021, Journal of Agricultural, Biological and Environmental Statistics (26) 560-579
Animal movement is a complex phenomenon where individual movement patterns can be influenced by a variety of factors including the animal’s current activity, available terrain and habitat, and locations of other animals. Motivated by modeling grizzly bear movement in the Greater Yellowstone Ecosystem, this article presents...
Concentration addition and independent action assessments of the binary mixtures of four toxicants on zebra mussel (Dreissena polymorpha) mortality
Matthew T. Barbour, Justin R. Schueller, Todd J. Severson, Jeremy K. Wise, Matthew J. Meulemans, James A. Luoma, Diane L. Waller
2021, Aquatic Toxicology (238)
Researchers most often focus on individual toxicants when identifying effective chemical control agents for aquatic invasive species; however, toxicant mixtures may elicit synergistic effects. Synergistic effects may decrease required concentrations and shorten exposure durations for treatments. We investigated four toxicants (EarthTec QZ,...
Climate impacts on the Gulf of Maine ecosystem: A review of observed and expected changes in 2050 from rising temperatures
Andrew J. Pershing, Michael A. Alexander, Damian C. Brady, David Brickman, Enrique N. Curchitser, Anthony W. Diamond, Loren McClenachan, Kathy Mills, Owen Nichols, Daniel Pendleton, Nicholas Record, James Scott, Michelle Staudinger, Yanjun Wang
2021, Elementa: Science of the Anthropocene (9)
The Gulf of Maine has recently experienced its warmest 5-year period (2015–2020) in the instrumental record. This warming was associated with a decline in the signature subarctic zooplankton species, Calanus finmarchicus. The temperature changes have also led to impacts on commercial species such as Atlantic cod (Gadus morhua) and American lobster...
Groundwater quality and age of secondary bedrock aquifers in the glaciated portion of eastern Nebraska, 2016–18
Christopher M. Hobza, Amanda T. Flynn
2021, Scientific Investigations Report 2021-5055
The Eastern Nebraska Water Resources Assessment (ENWRA) project was initiated in 2006 to assist water managers by developing a hydrogeologic framework and water budget for the glaciated portion of eastern Nebraska. Within the ENWRA area, the primary groundwater sources for municipal, domestic, and irrigation water needs are provided by withdrawals...
Spatiotemporal methane emission from global reservoirs
Matthew S Johnson, E Matthews, D Bastviken, Bridget R. Deemer, Jinyang Du, V Genovese
2021, Journal of Geophysical Research: Biogeosciences (126)
Inland aquatic systems, such as reservoirs, contribute substantially to global methane (CH4) emissions; yet are among the most uncertain components of the total CH4 budget. Reservoirs have received recent attention as they may generate high CH4 fluxes. Improved quantification of these CH4 fluxes, particularly their spatiotemporal distribution, is key to...
Geometry of the décollement below eastern Bangladesh and implications for seismic hazard
Paula Burgi, Juddith Hubbard, Syed Humayun Akhter, Dana E. Peterson
2021, Journal of Geophysical Research: Solid Earth (126)
Eastern Bangladesh sits on the seismically active Chittagong-Myanmar fold and thrust belt (CMFB), a north-trending accretionary wedge on the eastern side of the India-Eurasia collision. Earthquakes on the basal décollement and associated thrusts within the CMFB present a hazard to this densely populated region. In this study,...
Effects of winter ticks and internal parasites on moose survival in Vermont, USA
Jacob Debow, Joshua Blouin, Elias Rosenblatt, Cedric Alexander, Katherina D. Gieder, Walter Cottrell, James Murdoch, Therese M. Donovan
2021, Journal of Wildlife Management (85) 1423-1439
Moose (Alces alces) have experienced considerable declines along the periphery of their range in the northeastern United States. In Vermont, the population declined 45% from 2010 to 2017 despite minimal hunter harvest and adequate habitat. Similarly, nearby populations recently experienced epizootics characterized by >50% mortality. Declines have largely been associated...
Establishment of a microsatellite genetic baseline for North American Atlantic sturgeon (Acipenser o. oxyrhinchus) and range-wide analysis of population genetics
Shannon L. White, David C. Kazyak, Tanya L. Darden, Daniel J. Farrae, Barbara A. Lubinski, Robin L. Johnson, Michael S. Eackles, M Balazik, Hal Brundage, Adam G Fox, Dewayne A. Fox, Chris H Hager, Jason E Kahn, Isaac I Wirgin
2021, Conservation Genetics (22) 977-992
Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) is a long-lived, anadromous species that is broadly distributed along the Atlantic coast of North America. Historic overharvest and habitat degradation resulted in significant declines to Atlantic sturgeon populations and, following decades of limited recovery, the species was listed under the Endangered Species Act of...
Pore pressure threshold and fault slip potential for induced earthquakes in the Dallas-Fort Worth area of north central Texas
Peter H. Hennings, J.P. Nicot, Rebecca S. Gao, Heather R. DeShon, Jens-Erik Lundstern, Alan P. Morris, Michael R. Brudzinski, Elizabeth A. Horne, Caroline Breton
2021, Geophysical Research Letters (48)
Earthquakes were induced in the Fort Worth Basin from 2008 through 2020 by increase in pore pressure from injection of oilfield wastewater (SWD). In this region and elsewhere, a missing link in understanding the mechanics of causation has been a lack of comprehensive models of pore pressure...
Projected changes of regional lake hydrologic characteristics in response to 21st century climate change
Zachary J. Hanson, Jacob Aaron Zwart, Stuart E. Jones, Alan F. Hamlet, Diogo Bolster
2021, Inland Waters (11) 335-350
Inland lakes are socially and ecologically important components of many regional landscapes. Exploring lake responses to plausible future climate scenarios can provide important information needed to inform stakeholders of likely effects of hydrologic changes on these waterbodies in coming decades. To assess potential climate effects on lake...
Research, monitoring, and evaluation of emerging issues and measures to recover the Snake River Fall Chinook salmon ESU
Kenneth Tiffan, Peter H. Barry, Dalton Hance, John M. Plumb, Brad Bickford, Tobyn Rhodes, Dalton Dirk Lebeda, Kenneth G. King, Rulon J. Hemingway, John Hargrove
Kenneth F. Tiffan, Russell Perry, editor(s)
2021, Report
The portion of the Snake River fall Chinook salmon Oncorhynchus tshawytscha evolutionary significant unit (ESU) that spawns upstream of Lower Granite Dam transitioned from low to high abundance during 1992–2020 in response to U.S. Endangered Species Act recovery efforts and other federally mandated actions. This annual report focuses on changes...
Physics-guided machine learning for scientific discovery: An application in simulating lake temperature profiles
Xiaowei Jia, Jared Willard, Anuj Karpatne, Jordan Read, Jacob Aaron Zwart, Michael Steinbach, Vipin Kumar
2021, ACM/IMS Transactions on Data Science (2)
Physics-based models are often used to study engineering and environmental systems. The ability to model these systems is the key to achieving our future environmental sustainability and improving the quality of human life. This article focuses on simulating lake water temperature, which is critical for understanding the impact of changing...
Modeling at-sea density of marine birds to support renewable energy planning on the Pacific outer continental shelf of the contiguous United States
Jeffery Leirness, Josh Adams, Lisa T Ballance, Michael Coyne, Jonathan J. Felis, Trevor Joyce, David M. Pereksta, Arliss J Winship, Christopher F G Jeffrey, David G. Ainley, Donald Croll, Joseph R. Evenson, Jaime Jahncke, William McIver, Peter I Miller, Scott Pearson, Craig Strong, William J. Sydeman, Jeannette E Waddell, Jeannette E. Zamon, John D. Christensen
2021, OCS Study BOEM 2021-014
This report describes the at-sea spatial distributions of marine birds in Pacific OCS waters off the contiguous U.S. (Figure 1.1) to inform marine spatial planning in the region. The goal was to estimate long-term average spatial distributions for marine bird species using all available science-quality transect survey data and numerous...
Simulating the effort necessary to detect changes in northern spotted owl (Strix occidentalis caurina) populations using passive acoustic monitoring
Damon B. Lesmeister, Cara L. Appel, Raymond J. Davis, Charles B. Yackulic, Zachary J. Ruff
2021, Research Paper PNW-RP-618
Passive acoustic monitoring is a promising method for monitoring rare and nocturnal species, and for tracking changes in forest wildlife biodiversity. We conducted simulations to compare and evaluate various passive acoustic sampling designs effectiveness for monitoring spotted owl (Strix occidentalis caurina) population trends. We found that each design was effective...
Using growth rates to estimate the minimum age and size at sexual maturity in a captive population of the critically endangered Central American river turtle Dermatemys mawii
Nichole D. Bishop, Rick Hudson, Jacob Marlin, Thomas Pop, Thomas R. Rainwater, Shane M. Boylan, Benjamin K. Atkinson, Raymond Carthy
2021, Journal of Zoo and Aquarium Research (9) 150-156
The Central American river turtle Dermatemys mawii is a critically endangered species that has incurred substantial losses over the last several decades due to overhunting. This species is now being considered for head-starting programs (i.e. captive breeding of turtles for wild release). However, relatively little is known about their life...
Physiological consequences of consuming low-energy foods: Herbivory coincides with a stress response in Yellowstone bears.
David A Christianson, Tyler H Coleman, Quint Doan, Mark A. Haroldson
2021, Conservation Physiology (9)
Meat, fruit, seeds and other high-energy bear foods are often highly localized and briefly available and understanding which factors influence bear consumption of these foods is a common focus of bear conservation and ecology. However, the most common bear foods, graminoids and forbs, are more widespread but of lower...
Multiple in-stream stressors degrade biological assemblages in five U.S. regions
Ian R. Waite, Peter C. Van Metre, Patrick W. Moran, Christopher P. Konrad, Lisa H. Nowell, Michael R. Meador, Mark D. Munn, Travis S. Schmidt, Allen C. Gellis, Daren M. Carlisle, Paul M. Bradley, Barbara Mahler
2021, Science of the Total Environment (800)
Biological assemblages in streams are affected by a wide variety of physical and chemical stressors associated with land-use development, yet the importance of combinations of different types of stressors is not well known. From 2013 to 2017, the U.S. Geological Survey completed multi-stressor/multi-assemblage stream ecological assessments in five regions of...
Establishing conservation units to promote recovery of two threatened freshwater mussel species (Bivalvia: Unionida: Potamilus)
Chase H. Smith, Nathan Johnson, Clinton R. Robertson, Robert D. Doyle, Charles R. Randklev
2021, Ecology and Evolution (11) 11102-11122
Population genomics has significantly increased our ability to make inferences about microevolutionary processes and demographic histories, which have the potential to improve protection and recovery of imperiled species. Freshwater mussels (Bivalvia: Unionida) represent one of the most imperiled groups of organisms globally. Despite systemic decline of...
How do lizard niches conserve, diverge or converge? Further exploration of saurian evolutionary ecology
Nicolas Pelegrin, Kirk O. Winemiller, Laurie J. Vitt, Daniel Bruce Fitzgerald, Eric R. Pianka
2021, BMC Ecology and Evolution (21)
Environmental conditions on Earth are repeated in non-random patterns that often coincide with species from different regions and time periods having consistent combinations of morphological, physiological and behavioral traits. Observation of repeated trait combinations among species confronting similar environmental conditions suggest that adaptive trait combinations are constrained by functional tradeoffs...
Multiple climate change-driven tipping points for coastal systems
Patrick L. Barnard, Jenifer Dugan, Henry M. Page, Nathan J. Wood, Juliette A. Finzi Hart, Daniel Cayan, Li H. Erikson, David A. Hubbard, Monique Myers, John M. Melack, Samuel F. Iacobellis
2021, Nature--Scientific Reports (11)
As the climate evolves over the next century, the interaction of accelerating sea level rise (SLR) and storms, combined with confining development and infrastructure, will place greater stresses on physical, ecological, and human systems along the ocean-land margin. Many of these valued coastal systems could reach...
A seasonally dynamic model of light at the stream surface
Philip Savoy, Emily. S Bernhardt, Lily Kirk, Matthew J. Cohen, James B. Heffernan
2021, Freshwater Science (40) 286-301
Light is a primary constraint on primary production and drives many ecological processes in stream ecosystems, yet light regimes have received considerably less attention than other factors of the stream environment, such as hydrology or nutrient cycling. Light received by streams can be highly heterogeneous in both...
FLUXNET-CH4: A global, multi-ecosystem database and analysis of methane seasonality from freshwater wetlands
Kyle B. Delwiche, Sarah Knox, Avni Malhotra, Etienne Fluet-Chouinard, Gavin McNicol, Sarah Feron, Zutao Ouyang, Dario Papale, Carlo Trotta, Eleonora Canfora, You-Wei Cheah, Danielle Christianson, Ma. Carmelita R. Alberto, Pavel Alekseychik, Mika Aurela, Dennis Baldocchi, Sheel Bansal, David P. Billesbach, Gil Bohrer, Rosvel Bracho, Nina Buchmann, David I. Campbell, Gerardo Celis, Weinan Chen, Jiquan Chen, Housen Chu, Higo J Dalmagro, Sigrid Dengel, Ankur R. Desai, Matteo Detto, Han Dolman, Elke Eichelmann, Eugenie S. Euskirchen, Daniela Famulari, Kathrin Fuchs, Mathias Goeckede, Sébastien Gogo, Mangaliso J Gondwe, Jordan P. Goodrich, Pia Gottschalk, Scott L. Graham, Martin Heimann, Manuel Helbig, Carole Helfter, Kyle S. Hemes, Takashi Hirano, David Hollinger, Lukas Hortnagl, Hiroki Iwata, Adrien Jacotot, Joachim Jansen, Gerald Jurasinski, Minseok Kang, Kuno Kasak, John King, Janina Klatt, Franziska Koebsch, Ken Krauss, Derrick Y.F. Lai, Annalea Lohila, Ivan Mammarella, Luca B Marchesini, Giovanni Manca, Jaclyn H Matthes, Trofim Maximov, Lutz Merbold, Bhaskar Mitra, Timothy H. Morin, Eiko Nemitz, Mats B. Nilsson, Shuli Niu, Walter C. Oechel, Patricia Y. Oikawa, Keisuke Ono, Matthias Peichl, Olli Peltola, Michele L. Reba, Andrew D. Richardson, William Riley, Benjamin RK Runkle, Youngryel Ryu, Torsten Sachs, Ayaka Sakabe, Camilo Rey Sanchez, Edward A. Schuur, Karina VR Schafer, Oliver Sonnentag, Jed P. Sparks, Ellen Stuart-Haëntjens, Cove Sturtevant, Ryan C. Sullivan, Daphne J. Szutu, Jonathan E Thom, Margaret S. Torn, Eeva-Stiina Tuittila, Jessica Turner, Masahito Ueyama, Alex C. Valach, Rodrigo Vargas, Andrej Varlagin, Alma Vazquez-Lule, Joseph G. Verfaillie, Timo Vesala, George L Vourlitis, Eric Ward, Christian Wille, Georg Wohlfahrt, Guan Xhuan Wong, Zhen Zhang, Donatella Zona, Lisamarie Windham-Myers, Benjamin Poulter, Robert B. Jackson
2021, Earth System Science Data (13) 3607-3689
Methane (CH4) emissions from natural landscapes constitute roughly half of global CH4 contributions to the atmosphere, yet large uncertainties remain in the absolute magnitude and the seasonality of emission quantities and drivers. Eddy covariance (EC) measurements of CH4 flux are ideal for constraining ecosystem-scale CH4 emissions due to quasi-continuous...
Highly pathogenic avian influenza virus H5N2 (Clade 2.3.4.4) challenge of mallards age appropriate to the 2015 midwestern poultry outbreak
Jeffrey S. Hall, Daniel A. Grear, Scott Krauss, Patrick Seiler, Robert J. Dusek, Sean Nashold, Robert G. Webster
2021, Influenza and Other Respiratory Viruses (15) 767-777
BackgroundThe 2015 highly pathogenic avian influenza virus (HPAIV) H5N2 clade 2.3.4.4 outbreak in upper midwestern U.S. poultry operations was not detected in wild birds to any great degree during the outbreak, despite wild waterfowl being implicated in the introduction, reassortment, and movement of the virus into North...
Late Holocene slip rate of the Mojave section of the San Andreas Fault near Palmdale, California
Elaine Young, Eric Cowgill, Katherine M. Scharer, Emery Anderson-Merritt, Amanda Keen-Zebert, Ray J. Weldon
2021, Bulletin of the Seismological Society of America (111) 3204-3225
The geologic slip rate on the Mojave section of the San Andreas fault is poorly constrained, despite its importance for understanding earthquake hazard, apparent discrepancies between geologic and geodetic slip rates along this fault section, and long‐term fault interactions in southern California. Here, we...
The Everglades vulnerability analysis—Integrating ecological models and addressing uncertainty
Laura E. D’Acunto, Stephanie S. Romanach, Saira M. Haider, Caitlin E. Hackett, Jennifer H. Nestler, Dilip Shinde, Leonard G. Pearlstine
2021, Fact Sheet 2021-3033
The Everglades vulnerability analysis (EVA) is a project led by the U.S. Geological Survey in cooperation with the National Park Service and U.S. Army Corps of Engineers to accomplish one of the science goals of Restoration Coordination & Verification (RECOVER), a multiagency group responsible for providing scientific and technical...
