Geology and eruptive history of Bogoslof volcano
Christopher F. Waythomas, Matthew Warren Loewen, Kristi L. Wallace, Cheryl E. Cameron, Jessica F. Larsen
2020, Bulletin of Volcanology (82)
Bogoslof volcano is a shallow submarine/subaerial volcano in the southern Bering Sea about 100 km west of the community of Dutch Harbor, Alaska. The subaerial parts of the volcano consist of two small islands, Bogoslof Island and Fire Island, that together have a total area of about...
Investigating the effects of land use and land cover on the relationship between moisture and reflectance using Landsat Time Series
Heather J. Tollerud, Jesslyn F. Brown, Thomas Loveland
2020, Remote Sensing (12)
To better understand the Earth system, it is important to investigate the interactions between precipitation, land use/land cover (LULC), and the land surface, especially vegetation. An improved understanding of these land-atmosphere interactions can aid understanding of the climate system and modeling of time series satellite data. Here, we investigate the...
Effects of barrier island salt marsh restoration on marsh bird occurrence in the Northern Gulf of Mexico
Paige A. Byerly, Hardin Waddle, Alexis R. Premeaux, Paul L. Leberg
2020, Restoration Ecology (28) 1610-1620
In the Northern Gulf of Mexico, salt marshes are threatened by sea level rise, erosion, and loss of protective barrier islands. These barrier islands provide critical habitat for wildlife, including globally significant populations of marsh and shorebirds. We investigated salt marsh restoration on two Louisiana barrier islands using presence of...
Annual adult survival drives trends in Arctic-breeding shorebirds but knowledge gaps in other vital rates remain
Emily L. Weiser, Richard B. Lanctot, Stephen C. Brown, H. River Gates, Joel Bety, Megan L. Boldenow, Rodney W. Brook, Glen S. Brown, Willow B. English, Scott A. Flemming, Samantha E. Franks, H. Grant Gilchrist, Marie-Andree Giroux, Andrew C. Johnson, Steve Kendall, Lisa V. Kennedy, Laura Koloski, Eunbi Kwon, Jean-Francois Lamarre, David B. Lank, Christopher J. Latty, Nicolas Lecomte, Joseph R. Liebezeit, Rebecca L McGuire, Laura McKinnon, Erica Nol, David C. Payer, Johanna Perz, Jennie Rausch, Martin D. Robards, Sarah T. Saalfeld, Nathan R. Senner, Paul A. Smith, Mikhail Soloviev, Diana V Solovyeva, David H. Ward, Paul F. Wood, Brett K. Sandercock
2020, The Condor (1222)
Conservation status and management priorities are often informed by population trends. Trend estimates can be derived from population surveys or models, but both methods are associated with sources of uncertainty. Many Arctic-breeding shorebirds are thought to be declining based on migration and/or overwintering population surveys, but data are lacking to...
Proposed species extinction target fails to capture the diversity in biodiversity
David O'Brien, Margaret Hunter, Martin Breed, Laura Bertola, Rob Ogden, Clarisse Palma da Silva, Ivan Paz-Vinas, Gernot Segelbacher, Sean M. Hoban, Rodolfo Jaffe
2020, Science (368) 1193-1195
We believe the 20 species extinction metric is a retrograde proposal, which does not adequately consider the lessons learnt from the 2020 Aichi Biodiversity Targets. Whilst having a single simple overarching target is appealing, we believe a positively-framed target will garner support, rather than one that aims to, at best,...
Historical museum collections and contemporary population studies implicate roads and introduced predatory bullfrogs in the decline of western pond turtles
E. Griffin Nicholson, Stephanie Manzo, Zachary Devereux, Thomas Morgan, Robert N. Fisher, Christopher W. Brown, Rosi Dagit, Peter A Scott, H. Bradley Shaffer
2020, PeerJ (8)
The western pond turtle (WPT), recently separated into two paripatrically distributed species (Emys pallida and Emys marmorata), is experiencing significant reductions in its range and population size. In addition to habitat loss, two potential causes of decline are female-biased road mortality and high juvenile mortality from non-native predatory bullfrogs (Rana catesbeiana). However,...
Model-based clustering reveals patterns in central place use of a marine top predator
Brian M. Brost, Mevin Hooten, Robert J. Small
2020, Ecosphere
Satellite telemetry data are commonly used to quantify habitat selection, examine animal movements, and delineate home ranges. These data also contain valuable information concerning dens, nests, roosts, and other central places that are often associated with important life history events and may exhibit unique characteristics; however, using satellite telemetry data...
Book review of "Tsunami Propagation in Tidal Rivers", by Elena Tolkova
Eric L. Geist
2020, Pure and Applied Geophysics (177) 3057-3058
No abstract available....
Regional patterns in hydrologic response, a new three-component metric for hydrograph analysis and implications for ecohydrology, Northwest Volcanic Aquifer Study Area, USA
Jennifer A. Curtis, Erick R. Burns, Roy Sando
2020, Journal of Hydrology: Regional Studies (30)
Study RegionOregon, California, Idaho, Nevada and UtahStudy FocusSpatial patterns of hydrologic response were examined for the Northwest Volcanic Aquifer Study Area (NVASA). The utility of established hydrograph-separation methods for assessing hydrologic response in permeable volcanic terranes was assessed...
Statewide assessment of karst aquifers in New York with an inventory of closed-depression and focused-recharge features
William M. Kappel, James E. Reddy, Jonathan Casey Root
2020, Scientific Investigations Report 2020-5030
Karst is a landscape formed from the dissolution of soluble rock or rock containing minerals that are easily dissolved from within the rock. The landscape is characterized by sinkholes, caves, losing streams, springs, and underground drainage systems, which rapidly move water through the karst. The two forms of karst in...
Hydraulic fracturing induced seismicity
Ryan Schultz, Robert Skoumal, Michael R. Brudzinski, David Eaton, Brian Baptie, William L. Ellsworth
2020, Reviews of Geophysics (3)
Hydraulic fracturing (HF) is a technique that is used for extracting petroleum resources from impermeable host rocks. In this process, fluid injected under high pressure causes fractures to propagate. This technique has been transformative for the hydrocarbon industry, unlocking otherwise stranded resources; however, environmental concerns make HF...
Measuring channel planform change from image time series: A generalizable, spatially distributed, probabilistic method for quantifying uncertainty
Christina Leonard, Carl J. Legleiter, Devin M. Lea, John C. Schmidt
2020, Earth Surface Processes and Landforms (45) 2727-2744
Channels change in response to natural or anthropogenic fluctuations in streamflow and/or sediment supply and measurements of channel change are critical to many river management applications. Whereas repeated field surveys are costly and time‐consuming, remote sensing can be used to detect channel change at multiple temporal and spatial scales. Repeat...
Influence of hydropower outflow characteristics affecting riverbank stability: The lower Osage River case (Missouri, USA)
Wesam Mohammed-Ali, Cesar Mendoza, Robert R. Holmes Jr.
2020, Hydrological Sciences Journal (65) 1784-1793
This research examined the influences of outflow characteristics affecting riverbank stability. The 130 km stretch of the lower Osage River downstream from Bagnell Dam (Missouri, USA) provided an excellent case study for this purpose. The integrated BSTEM model with the HEC-RAS model was accurately calibrated and validated with data from...
Assessment of fire fuel load dynamics in shrubland ecosystems in the western United States using MODIS products
Zhen Li, Hua Shi, James Vogelmann, Todd Hawbaker, Birgit Peterson
2020, Remote Sensing (12)
Assessing fire behavior in shrubland/grassland ecosystems of the western United States has proven especially problematic, in part due to the complex nature of the vegetation and its relationships with prior fire history events. Our goals in this study were (1) to determine if we can effectively leverage...
Selected geologic maps of the Kodiak batholith and other Paleocene intrusive rocks, Kodiak Island, Alaska
David W. Farris, Peter J. Haeussler
2020, Scientific Investigations Map 3441
Kodiak Island in southern Alaska is one of the premier examples globally for the study of forearc magmatism. This location contains two Paleocene intrusive belts that formed due to the subduction of a migrating spreading ridge and slab-window: the Kodiak batholith and the trenchward magmatic belt. These magmatic rocks are...
Improved understanding and prediction of freshwater fish communities through the use of joint species distribution models
Tyler Wagner, Gretchen J.A. Hansen, Erin Schliep, Bethany Bethke, Andrew Honsey, Peter Jacobson, Benjamen C. Kline, Shannon L. White
2020, Canadian Journal of Fisheries and Aquatic Sciences (77) 1540-1551
Two primary goals in fisheries research are to (i) understand how habitat and environmental conditions influence the distribution of fishes across the landscape and (ii) make predictions about how fish communities will respond to environmental and anthropogenic change. In inland, freshwater ecosystems, quantitative approaches traditionally used to accomplish these goals...
Yellowstone Lake ecosystem restoration: A case study for invasive fish management
Todd M. Koel, Jeffrey L. Arnold, Patricia E. Bigelow, Travis O. Brenden, Jeffery D. Davis, Colleen R. Detjens, Philip D. Doepke, Brian D. Ertel, Hayley C. Glassic, Robert E. Gresswell, Christopher S Guy, Drew J. MacDonald, Michael E. Ruhl, Todd J. Stuth, David P. Sweet, John M. Syslo, Nathan A. Thomas, Lusha M. Tronstad, Patrick J. White, Alexander V. Zale
2020, Fishes (5)
Invasive predatory lake trout Salvelinus namaycush were discovered in Yellowstone Lake in 1994 and caused a precipitous decrease in abundance of native Yellowstone cutthroat trout Oncorhynchus clarkii bouvieri. Suppression efforts (primarily gillnetting) initiated in 1995 did not curtail lake trout population growth or lakewide expansion. An adaptive management strategy was developed in...
Increased drought severity tracks warming in the United States’ largest river basin
Justin Martin, Gregory T. Pederson, Connie A. Woodhouse, Edward R. Cook, Gregory J. McCabe, Kevin J. Anchukaitis, Erika K. Wise, Patrick Erger, Larry S. Dolan, Marketa McGuire, Subhrendu Gangopadhyay, Katherine J. Chase, Jeremy Littell, Stephen Gray, Scott St. George, Jonathan M. Friedman, David J. Sauchyn, Jeannine-Marie St. Jacques, John C. King
2020, PNAS (117) 11328-11336
Across the Upper Missouri River Basin, the recent drought of 2000 to 2010, known as the “turn-of-the-century drought,” was likely more severe than any in the instrumental record including the Dust Bowl drought. However, until now, adequate proxy records needed to better understand this event with regard to long-term variability...
Juvenile Lost River and shortnose sucker year-class formation, survival, and growth in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2018 monitoring report
Ryan J. Bart, Summer M. Burdick, Marshal S. Hoy, Carl O. Ostberg
2020, Open-File Report 2020-1064
Executive SummaryPopulations of federally endangered Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir (hereinafter Clear Lake), California, are experiencing long-term decreases in abundance. Upper Klamath Lake populations are decreasing not only because of adult mortality, which is relatively low, but...
The ocean's impact on slow slip events
Joan S. Gomberg, Peter J. Baxter, Euan G. C. Smith, Keisuke Ariyoshi, Steve Chiswell
2020, Geophysical Research Letters (47)
We test the hypothesis that ocean seafloor pressures impart stresses that alter the initiation or termination of transient slow slip events (SSEs) on shallow submarine and near-coastal faults, using simulated seafloor pressures and a new catalog of SSEs in the Hikurangi subduction zone. We show that seafloor pressures may be...
Drought reshuffles plant phenology and reduces the foraging benefit of green-wave surfing for a migratory ungulate
Ellen O. Aikens, Kevin L. Monteith, Jerod A. Merkle, Samantha P. H. Dwinnell, Gary L. Fralick, Matthew Kauffman
2020, Global Change Biology (26) 4215-4225
To increase resource gain, many herbivores pace their migration with the flush of nutritious plant green-up that progresses across the landscape (termed “green-wave surfing”). Despite concerns about the effects of climate change on migratory species and the critical role of plant phenology in mediating the ability...
Asymmetric benefits of a heterospecific breeding association vary with habitat, conspecific abundance and breeding stage
Rose J. Swift, Michael J. Anteau, Erin A. Roche, Mark H. Sherfy, Dustin L. Toy, Megan M. Ring
2020, Oikos (10) 1504-1520
Heterospecific breeding associations may benefit individuals by mitigating predation risk but may also create costs if they increase competition for resources or are more easily detectable by predators. Our understanding of the interactions among hetero‐ and conspecifics is often lacking in mixed species colonies. Here, we...
Purpose and benefits of U.S. Geological Survey Trusted Digital Repositories
Natalie Latysh, Keith G. Kirk, John Faundeen
2020, Fact Sheet 2020-3032
Federal mandates and U.S. Geological Survey (USGS, also known as the Bureau) Fundamental Science Practices (FSP) policies require that publicly funded scientific data, publications, and derivative works be openly accessible to researchers and the public. Open access helps to leverage the public investment by making the acquired data and published...
Quantifying the contribution of habitats and pathways to a spatially structured population facing environmental change
Christine Sample, Joanna A. Bieri, Benjamin L. Allen, Yulia Dementieva, Alyssa Carson, Connor Higgins, Sadie Piatt, Shirley Qiu, Summer Stafford, Brady J. Mattsson, Darius J. Semmens, James E. Diffendorfer, Wayne E. Thogmartin
2020, American Naturalist (196) 157-168
The consequences of environmental disturbance and management are difficult to quantify for spatially structured populations because changes in one location carry through to other areas as a result of species movement. We develop a metric, G, for measuring the contribution of a habitat or pathway to network-wide population...
Geochronologic and Hf-isotope framework of Proterozoic rocks from central New Mexico, USA: Formation of the Mazatzal crustal province in an extended continental margin arc
Mark E. Holland, Tyler A. Grambling, Karl E. Karlstrom, James V. Jones III, Kimberly N. Nagotko, Christopher G. Daniel
2020, Precambrian Research (347)
The growth of southern Laurentia has been attributed to the accretion of juvenile arc terranes during the successive 1.74-1.68 Ga Yavapai and 1.65-1.60 Ga Mazatzal orogenies. However, in light of the increasing importance of the ca. 1.49-1.40 Ga Mesoproterozoic Picuris orogeny, the tectonic setting in which the Mazatzal crustal province...
