Dietary fat concentrations influence fatty acid assimilation patterns in Atlantic pollock (Pollachius virens)
Suzanne M. Budge, Katherine Townsend, Santosh P Lall, Jeffrey F. Bromaghin
2020, Philosophical Transactions of the Royal Society B: Biological Sciences (375)
A key aspect in the use of fatty acids (FA) to estimate predator diets using Quantitative FA Signature Analysis (QFASA) is the ability to account for FA assimilation through the use of calibration coefficients (CC). Here, we tested the assumption that CC are independent of dietary fat concentrations by feeding...
Using a bayesian multistate occupancy model to assess seabird and shorebird status in Glacier Bay, Alaska
Steven L. Whitlock, Tania Lewis, James Peterson
2020, Wildlife Society Bulletin (44) 451-467
The U.S. Department of Interior National Park Service is charged with both monitoring avian communities and evaluating the influence of visitors to National Parks on sensitive species; however, this task is challenging considering that sampling programs often involve multiple species, each with differing behavior, habitat requirements,...
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...
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...
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...
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...
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...
Submarine landslide kinematics derived from high-resolution imaging in Port Valdez, Alaska
Emily Roland, Peter J. Haeussler, Thomas E. Parsons, Patrick E. Hart
2020, Journal of Geophysical Research - Solid Earth (125)
Submarine landslides caused by strong ground shaking during the M9.2 1964 Great Alaska earthquake generated a tsunami that destroyed much of the old town of Valdez, Alaska, and was responsible for 32 deaths at that location. We explore structural details of the 1964 landslide deposit, as well...
Major-oxide and trace-element geochemical data from rocks collected on Little Sitkin Island, from Little Sitkin Volcano, Alaska
Jessica Larsen, Christina A. Neal, Cheryl E. Cameron
2020, Raw Data File 2020-4
During the 2005 summer field season, geologists Michelle Coombs, Christina Neal, and Jessica Larsen from the University of Alaska, Fairbanks and the U.S. Geological survey, Alaska Volcano Observatory (AVO) conducted fieldwork on Little Sitkin Island in the western Aleutians of Alaska. The primary purpose of the fieldwork was to install...
U-Pb Zircon ages from bedrock samples collected in the Tanacross D-1, and parts of the D-2, C-1, and C-2 quadrangles, Alaska
Alicja Wypych, James V. Jones III, Paul B. O’Sullivan
2020, Preliminary Interpretive Reports 2020-2
This Alaska Division of Geological & Geophysical Surveys (DGGS) Preliminary Interpretive Report presents U-Pb ages of zircons from 14 sedimentary, metamorphic, and igneous samples collected during 2017 and 2018 field investigations in the northeastern Tanacross Quadrangle, Alaska. The DGGS Northeast Tanacross project is a part of multi-year effort to investigate...
Erratum: Seismic survey design and effects on maternal polar bear dens
Ryan H. Wilson, George M. Durner
2020, Journal of Wildlife Management (84) 1022-1024
Since the publication of this manuscript, readers have noted two errors in our analysis. The first is that we inadvertently stated that the forward looking infrared (FLIR) survey simulations only represented a single FLIR survey. In reality, the analysis assumed two independent FLIR surveys occurred prior to simulated...
Deglacierization of a marginal basin and implications for outburst floods, Mendenhall Glacier, Alaska
Christian Kienholz, Jamie Pierce, Eran Hood, Jason M. Amundson, Gabriel Wolken, Aaron Jacobs, Skye Hart, Katreen Wikstrom-Jones, Dina Abdel-Fattah, Crane Johnson, Jeffrey S. Conaway
2020, Frontiers in Earth Science (8)
Suicide Basin is a partly glacierized marginal basin of Mendenhall Glacier, Alaska, that has released glacier lake outburst floods (GLOFs) annually since 2011. The floods cause inundation and erosion in the Mendenhall Valley, impacting homes and other infrastructure. Here, we utilize in-situ and remote sensing data to assess the recent evolution and...
Evidence for large Holocene earthquakes along the Denali fault in southwest Yukon, Canada
Andree Blais-Stevens, J.J. Clague, J. Brahney, P. Lipovsky, Peter J. Haeussler, B. Menounos
2020, Environmental and Engineering Geoscience (26) 149-166
The Yukon–Alaska Highway corridor in southern Yukon is subject to geohazards ranging from landslides to floods and earthquakes on faults in the St. Elias Mountains and Shakwak Valley. Here we discuss the late Holocene seismic history of the Denali fault, located at the eastern front of the St. Elias Mountains...
Evaluation of the analytical methods used to determine the elemental concentrations found in the stream geochemical dataset compiled for Alaska
Bronwen Wang, Karl J. Ellefsen, Matthew Granitto, Karen D. Kelley, Susan M. Karl, George N.D. Case, Douglas C. Kreiner, Courtney L. Amundson
2020, Open-File Report 2020-1038
A recent U.S. Geological Survey data compilation of stream-sediment geochemistry for Alaska contains decades of analyses collected under numerous Federal and State programs. The compiled data were determined by various analytical methods. Some samples were reanalyzed by a different analytical method than the original, resulting in some elements having concentrations...
The influence of snow cover, air temperature, and groundwater flow on the active-layer thermal regime of Arctic hillslopes drained by water tracks
Caitlin R Rushlow, Audrey H Sawyer, Clifford I. Voss, Sarah E Godsey
2020, Hydrogeology Journal (28) 2057-2069
Permafrost in Arctic watersheds limits soil biological activity to a thin, seasonally thawed active layer that contributes water to streams. In many hillslopes, relatively wet drainage features called water tracks have distinct freeze-thaw patterns that affect groundwater flow and storage, and thus the export of heat...
Linking subsurface to surface using gas emission and melt inclusion data at Mount Cleveland volcano, Alaska
Cynthia Werner, Daniel J. Rasmussen, Terry Plank, Peter J. Kelly, Christoph Kern, Taryn Lopez, Jonas Gliss, John Power, Diana Roman, Pavel Izbekov, John J. Lyons
2020, Geochemistry, Geophysics, Geosystems (21)
Mount Cleveland is one of Alaska's most active volcanoes, yet little is known about the magmatic system driving persistent and dynamic volcanic activity. Volcanic gas and melt inclusion (MI) data from 2016 were combined to investigate shallow magmatic processes. SO2 emission rates were between 166 and 324 t/day and the H2O/SO2 was 600 ± 53,...
Sediments and the sea floor of the continental shelves and coastal waters of the United States—About the usSEABED integrated sea-floor-characterization database, built with the dbSEABED processing system
Brian J. Buczkowski, Jane A. Reid, Chris J. Jenkins
2020, Open-File Report 2020-1046
Since the second half of the 20th century, there has been an increase in scientific interest, research effort, and information gathered on the geologic sedimentary character of the continental margins of the United States. Data and information from thousands of sources have increased our scientific understanding of the character of...
At the end of the road: Lessons learned from comparing model- and design-based approaches to estimate population sizes of boreal birds in Alberta, Canada
Peter Solymos, Judith D Toms, Steven M. Matsuoka, Steven G. Cumming, Nicole K. S. Barker, Wayne E. Thogmartin, Diana Stralberg, Andrew D. Crosby, Francisco V Denes, Samuel Hache, C Lisa Mahon, Fiona K A Schmiegelow, Erin M. Bayne
2020, The Condor (122)
Estimating population abundance is a challenging task complicated by the amount, type, and quality of available data. Conservationists have relied on design-based estimates from Partners in Flight (PIF), which primarily uses roadside data from the North American Breeding Bird Survey (BBS) to estimate populations sizes. However, the BBS was not...
A red knot as a black swan: How a single bird shows navigational abilities during repeat crossings of the Greenland Icecap
Eva Kok, T. Lee Tibbitts, David C. Douglas, Paul Howey, Anne Dekinga, Benjamin Gnep, Theunis Piersma
2020, Journal of Avian Biology (51)
Despite the wealth of studies on seasonal movements of birds between southern nonbreeding locations and High Arctic breeding locations, the key mechanisms of navigation during these migrations remain elusive. A flight along the shortest possible route between pairs of points on a sphere (‘orthodrome’) requires a bird to be able...
U.S. Geological Survey 2018 Kīlauea Volcano eruption response in Hawai'i—After-action review
Dee M. Williams, Vic F. Avery, Michelle L. Coombs, Dale A. Cox, Lief R. Horwitz, Sara K. McBride, Ryan J. McClymont, Seth C. Moran
2020, Open-File Report 2020-1041
The 2018 Kīlauea Volcano eruption lasted 107 days, and now ranks as the most destructive event at Kilauea since 1790, and as one of the most costly volcanic disasters in U.S. history. Multiple simultaneous hazard events unfolded, including sustained seismic activity leading to collapse at the summit of Halema'uma'u crater...
Ground failure triggered by shaking during the November 30, 2018, magnitude 7.1 Anchorage, Alaska, earthquake
Alex R. Grant, Randall W. Jibson, Robert C. Witter, Kate E. Allstadt, Eric M. Thompson, Adrian M. Bender
2020, Open-File Report 2020-1043
We developed an initial inventory of ground failure features from the November 30, 2018, magnitude 7.1 Anchorage earthquake. This inventory of 153 features is from ground-based observations soon after the earthquake (December 5–10) that include the presence or absence of liquefaction, landslides, and individual crack traces of lateral spreads...
Further information on the avifauna of St. Matthew and Hall Islands, Bering Sea, Alaska
Bryce W. Robinson, Jack J. Withrow, Rachel M. Richardson, Steven M. Matsuoka, Robert E. Gill Jr., Andrew S. Johnson, Irby J. Lovette, James A. Johnson, Anthony R. DeGange, Marc D. Romano
2020, Western Birds (51) 78-91
In June and July 2018 and July 2019 we surveyed birds on St. Matthew and Hall islands, isolated in the central Bering Sea. Our surveys were focused on the McKay’s Bunting (Plectrophenax hyperboreus), Rock Sandpiper (Calidris ptilocnemis ptilocnemis), and Pelagic Cormorant (Phalacrocorax pelagicus) but encompassed all birds and yielded 13 species and four subspecies...
Geometric and material variability influences stress states relevant to coastal permafrost bluff failure
Matthew A. Thomas, Alejandro Mota, Benjamin M. Jones, R. Charles Choens, Jennifer M. Frederick, Diana L. Bull
2020, Frontiers in Earth Science (143) 1-13
Scientific knowledge and engineering tools for predicting coastal erosion are largely confined to temperate climate zones that are dominated by non-cohesive sediments. The pattern of erosion exhibited by the ice-bonded permafrost bluffs in Arctic Alaska, however, is not well explained by these tools. Investigation of the oceanographic, thermal, and mechanical...
A review of pathogens, diseases, and contaminants of muskrats (Ondatra zibethicus) in North America
Laken S Ganoe, W. David Walter, Justin D. Brown, Michael J. Yabsley, Matthew J Lovallo
2020, Frontiers in Veterinary Science (7)
Over the last 50 years, significant muskrat (Ondatra zibethicus) harvest declines have been observed throughout North America. Several theories for the decline have been proposed, including increased parasite infections and disease within muskrat populations. No existing wholistic review of muskrat exposure to pathogens, contaminants, and diseases exists. To address this...
Does habitat partitioning by sympatric plovers affect nest survival?
Kelly S Overduijn, Colleen M. Handel, Abby Powell
2020, The Auk (137)
The vertical structure and composition of vegetation can influence the quantity and quality of potential nesting sites for birds. Interspecific competition for high-quality nesting habitat may force some individuals into suboptimal habitat and lead to reduced reproductive success, eventually leading to changes in distribution or abundance. Large climate-mediated shifts in...
