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The state of the giant sequoias: Losses, risks, and opportunities The state of the giant sequoias: Losses, risks, and opportunities
Background Giant sequoias, an iconic tree found only in a narrow band along the western slope of the Sierra Nevada of California, are facing unprecedented threats. Despite being adapted to fire and resistant to both drought and insect attack, the species has exhibited signs of vulnerability to these stressors in recent years, with the most substantial impacts coming from wildfire...
Authors
Kristen L. Shive, Brianna Baker, David Nicolas Bertil Soderberg, Linnea J. Hardlund, Marc D. Meyer, P. Bryant Nagelson, Sarah M. Bisbing, Adrian Das, Nathan L. Stephenson
DNA retention in sea lamprey digestive tracts: Insights from controlled feeding experiments DNA retention in sea lamprey digestive tracts: Insights from controlled feeding experiments
The sea lamprey (Petromyzon marinus), a non-native species in the Laurentian Great Lakes, has significantly impacted native fish communities and commercial fisheries, requiring population suppression efforts. While traditional control methods such as lampricides and barriers have reduced sea lamprey population abundance, questions remain regarding sea lamprey dietary composition given...
Authors
Conor O'Kane, Nicholas S. Johnson, Kim T. Scribner, Jeannette Kanefsky, Weiming Li, Tyler Bruning, John D. Robinson
Seasonal environmental conditions and river morphology shape summer phytoplankton communities Seasonal environmental conditions and river morphology shape summer phytoplankton communities
1. Phytoplankton form the base of large river food webs but there are limited studies on the nature and drivers of communities over longer time scales. Further, climate change is projected to favor taxa associated with harmful algal blooms, but our knowledge of the timing, locations, and drivers of cyanobacteria in rivers lags that of lakes and marine environments. 2. We used a summer
Authors
Kathi Jo Jankowski, James H. Larson, John T. Manier
Relative activity of three bat species Impacted by white-nose syndrome on the Chesapeake and Ohio Canal National Historical Park Relative activity of three bat species Impacted by white-nose syndrome on the Chesapeake and Ohio Canal National Historical Park
White-nose syndrome, a disease caused by the fungal-pathogen Pseudogymnoascus destructans, has caused drastic reductions in populations of several North American hibernating species of bats including Myotis lucifugus (Little Brown Bat), Myotis septentrionalis (Northern Long-eared Bat), and Perimyotis subflavus (Tricolored Bat). Recent data indicate that populations of Little Brown Bats...
Authors
Megan L. Moran, Amber S. Litterer, Jesse L. De La Cruz, Sabrina M. Deeley, W. Mark Ford
Advances in volcano monitoring driven by the first decade of Sentinel-1 observations Advances in volcano monitoring driven by the first decade of Sentinel-1 observations
Sentinel-1 has transformed how satellite radar data (SAR and InSAR) are used in volcanology. The systematic, long-term archive and open-access policy means that volcano observatories and research organisations have invested in integrating Sentinel-1 datasets into their monitoring systems. We identify 233 high priority volcanoes and estimate that Sentinel-1 data has been used in peer...
Authors
Juliet Biggs, Nantheera Anantrasirichai, Kyle R. Anderson, Valerie Cayol, Edna W. Dualeh, Quentin Dumont, Susanna K. Ebmeier, Jean Luc Froger, Matthew Gaddes, Federico Galleto, Pablo J. Gonzales, Ian Hamling, Andrew Hooper, Milan Lazecky, Camila Novoa Lizama, Matthew E. Pritchard
Seasonal and annual survival of acoustically tagged juvenile Gulf sturgeon in the Apalachicola River, Florida, USA Seasonal and annual survival of acoustically tagged juvenile Gulf sturgeon in the Apalachicola River, Florida, USA
Gulf sturgeon Acipenser desotoi are anadromous fish that have undergone major population declines throughout their range. Habitat alteration and previous overharvest in commercial fisheries led to the species being listed as ‘threatened’ under the US Endangered Species Act in 1991. An accurate understanding of population dynamics, including survival, is necessary for monitoring...
Authors
Russell T. Wilson, Adam J. Kaeser, Stephen W. Parker, Brian J. Irwin, Martin J. Hamel, Adam G. Fox
Potential causes of shedding aggregations in prairie rattlesnakes Potential causes of shedding aggregations in prairie rattlesnakes
Aggregation is common across taxa and typically confers clear benefits to group members (e.g., allo-parenting, group defense, thermoregulation, access to resources). But aggregation can also be costly. The mechanisms that underpin aggregation—and the cues that elicit it—inform our understanding of how animals resolve tradeoffs among selection pressures. Snakes sometimes form conspicuous
Authors
Emily Martin, Courtney J. Conway
Ungulate migrations of the Western United States, volume 6 Ungulate migrations of the Western United States, volume 6
This report, volume 6 in the “Ungulate Migrations of the Western United States” report series, showcases the migrations of 23 ungulate herds in the Western United States. The report series is produced by the Corridor Mapping Team (CMT). Led by the U.S. Geological Survey, the CMT is a collaboration among 11 State agencies, as well as regional and Federal partners, and an expanding number...
Authors
Matthew J. Kauffman, Blake Lowrey, Jennifer L. McKee, Chloe J. Beaupre, Jeffrey Beck, Jon P. Beckmann, Scott Bergen, Joel Berger, Regan Berkley, Nathan Borg, Peyton Carl, Michelle Cowardin, Sarah Dewey, Katie M. Dugger, Amy Ehrhart, Jessica Fort, Eric Freeman, Ian Freeman, Emily R. Gelzer, David German, Jacob Gray, Evan Greenspan, Zach Gregory, Emily Hagler, Makeda Hanson, Valerie D. Hinojoza-Rood, Pat Hnilicka, Nick Jaffe, Andrew F. Jakes, Aran Johnson, Jaron T. Kolek, Art Lawson, Zach Lockyer, Daryl Lutz, Cody McKee, Jane McKeever, Jerod A. Merkle, Matthew A. Mumma, Dennis Newman, Erika Peckham, Jill E. Randall, Tempe Regan, Adele K. Reinking, Robert Ritson, William J. Rudd, Brianna M. Russo, Hall Sawyer, Cody Schroeder, Brandon Scurlock, Jeff Short, Bret Stansberry, Erik Steiner, Alethea Steingisser, Tom Stephenson, Eric VanNatta, Cody F. Wallace, Brad Weinmeister, Don Whittaker, Tatjana Woody, Sean Yancey
Valuing socio-economic and ecological attributes of forested watershed restoration to reduce wildfire risk in the southwestern U.S. Valuing socio-economic and ecological attributes of forested watershed restoration to reduce wildfire risk in the southwestern U.S.
Forest restoration in a watershed can provide numerous ecological improvements and social benefits, including reducing the risk of extreme wildfire. Understanding the values of the accrued benefits can be used to evaluate the use of funds to support restoration. The Rio Grande watershed is a vast watershed covering approximately 335,000 mile2 (867,646 km2). The Rio Grande watershed...
Authors
Mohammad Mashiur Rahman, James R. Meldrum, Julie M. Mueller, Christopher Huber
Seasons and seasonality in lakes: Synthesis amid global change Seasons and seasonality in lakes: Synthesis amid global change
Seasonality in environmental conditions plays a fundamental role in shaping lake ecosystems. However, patterns of seasonality vary worldwide, and these patterns are shifting over time amid global change. Thus, it is increasingly important to evaluate how seasons and seasonality are represented in lake ecosystem research. Here, we used a literature review and global data analysis to...
Authors
Abigail S. Lewis, David C. Richardson, Dexter W. Howard, Cayelan C. Carey, Benjamin M. Kraemer, Yael Amitai, Sheel Bansal, Elvira Eyto, Hans-Peter Grossart, Kathryn K. Hoffman, Rachel A. Hovel, Lesley B. Knoll, Isabella Oleksy, Arianto Santoso, Martin Schmid, Robert Schwefel, Dietmar Straile, Xinyu Sun, Gesa A. Weyhenmeyer, Whitney M. Woelmer, Sabine Wollrab, Petr Znachor
Controlling invasive carp ichthyoplankton dispersion using a streamwise-oriented bubble screen: A proof-of-concept validation in a laboratory flume Controlling invasive carp ichthyoplankton dispersion using a streamwise-oriented bubble screen: A proof-of-concept validation in a laboratory flume
Recent evidence of invasive grass carp (Ctenopharyngodon idella) reproducing in tributaries to the Laurentian Great Lakes has highlighted the need for control efforts targeting multiple life stages. Initial attempts to control dispersal of downstream-drifting invasive carp ichthyoplankton (i.e., eggs and larvae) using an oblique bubble screen (OBS) revealed that nearly neutrally buoyant...
Authors
Vindhyawasini Prasad, Henry F. Doyle, Cory Suski, P. Ryan Jackson, Amy E. George, Jesse Robert Fischer, Benjamin H. Stahlschmidt, Anne Marie Herndon, Rafael O. Tinoco
The Python Energy Balance model for Snow and Ice (PEBSI): Application and tradeoff analysis on Gulkana Glacier, Alaska The Python Energy Balance model for Snow and Ice (PEBSI): Application and tradeoff analysis on Gulkana Glacier, Alaska
Glacier energy-balance models offer mechanistic insights into glacier mass balance under a changing climate, yet their considerable data requirements hinder large-scale applications. Here we present the open-source Python Energy Balance model for Snow and Ice (PEBSI), which includes physically based albedo evolution using the Snow, Ice and Aerosol Radiative (SNICAR) model. PEBSI is...
Authors
Claire V. Wilson, David R. Rounce, Louis Sass, Albin Wells, Emily H. Baker, Mark Flanner, S. Mackenzie Skiles