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...
A typology of drought decision making: Synthesizing across cases to understand drought preparedness and response actions
Amanda E. Cravens, Jennifer Henderson, Jack Friedman, Nina Burkardt, Ashley E. Cooper, Tonya Haigh, Michael Hayes, Jamie McEvoy, Stephanie Paladino, Adam Wilke, Hailey Wilmer
2021, Weather and Climate Extremes (33)
Drought is an inescapable reality in many regions, including much of the western United States. With climate change, droughts are predicted to intensify and occur more frequently, making the imperative for drought management even greater. Many diverse actors – including private landowners, business...
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...
Land surface temperature differences between natural and artificial turf sports fields as estimated from satellite: Examples from the United States and Europe
Vasco M. Mantas, George Z. Xian
2021, Conference Paper
An increasing number of sports fields around the world are equipped with artificial turf. This solution has been endorsed by numerous sports federations, despite concerns about the potential for injuries and higher surface temperatures. In this work we analyzed land surface temperature in 4 pairs of...
Got acetylene: A personal research retrospective
Ronald S. Oremland
2021, FEMS Microbes (2)
In research, sometimes sheer happenstance and serendipity make for an unexpected discovery. Once revealed and if interesting enough, such a finding and its follow-up investigations can lead to advances by others that leave its originators ‘scooped’ and mulling about what next to do with their unpublished data, specifically what...
Colored shaded-relief bathymetry, acoustic backscatter, and selected perspective views of the northern part of the California Continental Borderland, southern California
Peter Dartnell, Emily C. Roland, Nicole A. Raineault, Christopher M. Castillo, James E. Conrad, Renato Kane, Daniel S. Brothers, Jared W. Kluesner, Maureen A. L. Walton
2021, Scientific Investigations Map 3473
The California Continental Borderland is the complex continental margin in southern California that extends from Point Conception southward into northern Baja California (Fisher and others, 2009). This colored shaded-relief bathymetry map of the northern continental borderland in southern California was generated primarily from multibeam-echosounder data collected by the University of...
Why study geysers?
Shaul Hurwitz, Michael Manga, Kathleen Campbell, Carolina Munoz-Saez, Eva Eibl
2021, Eos, American Geophysical Union (102)
Scientific research for more than two centuries has improved our understanding of Earth’s geysers. This knowledge provides insights into volcanic processes, the origin and environmental limits of life on Earth and potentially Mars, and on geysers on icy outer solar system satellites. Continued scientific research will help us understand and...
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...
Ontogenetic trait shifts: Seedlings display high trait variability during early stages of development
Caroline Ann Havrilla, Seth M. Munson, Charles Yackulic, Bradley J. Butterfield
2021, Functional Ecology (35) 2409-2423
Characterizing variation in plant functional traits is often key to understanding community-level processes and predicting ecosystem responses to environmental change. Trait-based ecology has focused on interspecific trait variation, but sources and consequences of within-species ontogenetic trait variation, particularly during early stages of development, remain understudied.Using a manipulative greenhouse experiment,...
Approach for quantifying rare Earth elements at low keV
Heather A. Lowers
2021, Microscopy and Microanalysis (27) 1864-1866
The challenges of analyzing bastnaesite (REECO3F) and hydroxylbastnaesite (REECO3OH) include beam sensitivity, quantification of light elements in a heavy element matrix, the presence of elements that cannot be analyzed with EPMA (H), and the use of x-ray lines whose physical constants are not well known. To overcome some of these...
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...
Storm-scale and seasonal dynamics of carbon export from a nested subarctic watershed underlain by permafrost
Joshua C. Koch, Mark Dornblaser, Rob Striegl
2021, Journal of Geophysical Research Biogeosciences (126)
Subarctic catchments underlain by permafrost sequester a major stock of frozen organic carbon (C), which may be mobilized as the Arctic warms. Warming can impact C export from thawing soils by altering the depth and timing of runoff related to changing storm and fire regimes and altered soil thaw depths....
Post-release survival of California brown pelicans (Pelecanus Occidentalis Californicus) following oiling and rehabilitation after the Refugio oil spill
C. V. Fiorello, Patrick G.R. Jodice, J. S. Lamb, Y. G. Satgé, K. Mills, M. Ziccardi
2021, Journal of Wildlife Diseases (57) 590-600
Oil spills represent a continued threat to marine wildlife. Although the public expects, and the State of California, US requires, oiled animals to be rescued for rehabilitation and release, scientists have questioned the welfare and conservation value of capture and rehabilitation of oiled wildlife, based on poor postrelease survival documented...
Steppe eagle Aquila nipalensis
Michael J. McGrady, Evgeny A. Bragin, Igor Karyakin, Nyambayar Batbayar, Todd E. Katzner
2021, Book chapter, Migration strategies of birds of prey in sestern Palearctic
The steppe eagle (Aquila nipalensis) is a globally endangered, full migrant raptor that breeds in the southern temperate zone from European Russia in the west to eastern Mongolia, Dauria and adjacent north-eastern China in the east. It winters in Africa, the Middle East and Southern and South-Eastern Asia, and migrations...
Diplotriaena obtusa (Nematoda: Diplotriaenidae) from barn swallows (Hirundo rustica) and cliff swallows (Petrochelidon pyrrhonota) collected during mortality events in the Upper Midwest, USA
Michelle Michalski, Emily Kadolph, Constance Roderick, Julia S. Lankton, Rebecca A. Cole
2021, Journal of Parasitology (107) 593-599
Several mortality events involving barn swallows (Hirundo rustica) and cliff swallows (Petrochelidon pyrrhonota) were reported in the Upper Midwestern states in 2017 and 2018. Barn swallow mortality followed unseasonal cold snaps, with the primary cause of death being emaciation with concurrent air sac nematodiasis. Lesions in cliff swallows were consistent...
Using the DRCOG 2018 pilot land use land cover data to predict urban air temperature in the Denver metro area
Peter Christian Ibsen
2021, Newsletter
No abstract available....
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...
Past abrupt changes, tipping points and cascading impacts in the Earth system
V. Brovkin, Edward J. Brook, J. Williams, S. Bathiany, T. Lenton, M. Barton, R. DeConto, J. Donges, A. Ganopolski, J. McManus, Summer K. Praetorius, A. de Vernal, A. Abe-Ouchi, H. Cheng, M Claussen, M. Crucifix, Virginia Iglesias, Darrell S. Kaufman, T. Kleinen, Fabrice Lambert, Sander van der Leeuw, Hannah Liddy, Marie-France Loutre, David McGee, Kira Rehfeld, Rachael H. Rhodes, Alistair W.R. Seddon, Lilian Vanderveken, Zicheng Yu
2021, Nature Geoscience (14) 550-558
The geological record shows that abrupt changes in the Earth system can occur on timescales short enough to challenge the capacity of human societies to adapt to environmental pressures. In many cases, abrupt changes arise from slow changes in one component of the Earth system that...
Eastern Imperial Eagle Aquila heliaca
Evgeny Bragin, Marton Horvath, Sharon A. Poessel, Todd E. Katzner
2021, Book chapter, Migration strategies of birds of prey in sestern Palearctic
Eastern imperial eagles are a short-, medium-distance, partially-migratory, or even non-migratory, raptor that breeds at the forest-steppe interface in Eurasia and winters in Northern Africa, the Middle East or South Asia. Migratory strategies of imperial eagles are diverse. Eagles breeding in Central and Southeast Europe and south of the Black...
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...
Adult sockeye salmon responses to transplanting upstream of an impassable dam
Tobias Kock, Scott D. Evans, Brian P. Saluskin, Andrew P. Matala, Richard Visser, Mark.V. Johnston, Peter F. Galbreath, Adam Pope
2021, North American Journal of Fisheries Management (41) 1640-1651
The Yakama Nation manages a program for reintroducing Sockeye Salmon Oncorhynchus nerka upstream of Cle Elum Dam in the Yakima River basin. The program involves transplanting of a mix of adult Sockeye Salmon from two middle Columbia River donor stocks,...
Pervasive changes in stream intermittency across the United States
Samuel Zipper, John C. Hammond, Margaret Shanafield, Margaret Zimmer, Thibault Datry, C. Nathan Jones, Kendra E. Kaiser, Sarah Godsey, Ryan Burrow, Joanna Blaszczak, Michelle Busch, Adam N. Price, Kate Boersma, Adam Ward, Katie Costigan, George Allen, Corey Krabbenhoft, Walter Dodds, Meryl C. Mims, Julian Olden, Stephanie K. Kampf, Amy J. Burgin, Daniel Allen
2021, Environmental Research Letters (16)
Non-perennial streams are widespread, critical to ecosystems and society, and the subject of ongoing policy debate. Prior large-scale research on stream intermittency has been based on long-term averages, generally using annually aggregated data to characterize a highly variable process. As a result, it is not well understood...
Stratigraphic cross sections of the Mowry Shale and associated strata in the Wind River Basin, Wyoming
Thomas M. Finn
2021, Scientific Investigations Map 3476
The Wind River Basin in Wyoming is one of many structural and sedimentary basins that formed in the Rocky Mountain foreland during the Laramide orogeny in the latest Cretaceous through the early Eocene. The basin (bounded by the Washakie, Owl Creek, and Bighorn uplifts on the north, the Casper arch...
