Detrital zircon ages from upper Paleozoic–Triassic clastic strata on St. Lawrence Island, Alaska: An enigmatic component of the Arctic Alaska–Chukotka microplate
Jeffrey M. Amato, Julie A. Dumoulin, Eric S. Gottlieb, Thomas E. Moore
2022, Geosphere (18) 1492-1523
New lithologic and detrital zircon (DZ) U-Pb data from Devonian–Triassic strata on St. Lawrence Island in the Bering Sea and from the western Brooks Range of Alaska suggest affinities between these two areas. The Brooks Range constitutes part of the Arctic Alaska–Chukotka microplate, but the tectonic and paleogeographic affinities of...
Modeled interactions of mountain pine beetle and wildland fire under future climate and management scenarios for three western US landscapes
Robert Keane, Barbara Bentz, Lisa M. Holsinger, Victoria Saab, Rachel A. Loehman
2022, Fire Ecology (18)
Mountain pine beetle (MPB) is a native disturbance agent across most pine forests in the western US. Climate changes will directly and indirectly impact frequencies and severities of MPB outbreaks, which can then alter fuel characteristics and wildland fire dynamics via changes in stand structure and composition. To investigate the...
Interannual consistency of migration phenology is season- and breeding region-specific in North American Golden Eagles
Laurie D Maynard, Jean-François Therrien, Jérôme Lemaître, Travis L. Booms, Tricia A. Miller, Todd E. Katzner, Scott G. Somershoe, Jeff Cooper, Robert Sargent, Nicolas Lecomte
2022, Ornithology (136)
Interannual consistency (an indicator of the strength of adjustments) in migration phenology of Golden Eagles (Aquila chrysaetos) in North America is most strongly associated with the breeding region, the season, and with late-season temperature on breeding and wintering grounds. Consistency was greatest in boreal spring migration and the breeding...
Gull plumages are, and are not, what they appear to human vision
Muir D Eaton, Pilar Benites, Luke Campillo, Robert E. Wilson, Sarah A. Sonsthagen
2022, Annales Zoologici Fennici (59) 187-203
Clear correlations between human and bird visual assessments of color have been documented, and are often assumed, despite fundamental differences in human and avian visual physiology and morphology. Analyses of plumage colors with avian perceptual models have shown widespread hidden inter-sexual and inter-specific color variation among passerines perceived...
Evidence of increased mussel abundance related to the Pacific marine heatwave and sea star wasting
Sarah Beth Traiger, James L. Bodkin, Heather Coletti, Brenda Ballachey, Dean Thomas, Daniel Esler, Katrin Iken, Brenda Konar, Mandy Lindeberg, Daniel Monson, Brian H. Robinson, Robert M. Suryan, Ben Weitzman
2022, Marine Ecology (43)
Mussels occupy a key middle trophic position in nearshore food webs linking primary producers to predators. Climate-related environmental changes may synergistically combine with changes in predator abundance to affect intertidal ecosystems. We examined the influence of two major events on mussel (Mytilus trossulus) abundance in the northern Gulf of Alaska:...
Results of automated scanning electron microscope (SEM) analyses of rock and stream sediment samples from the Taurus porphyry copper deposit area, Tanacross quadrangle, eastern Alaska
Karen D. Kelley, Katharina Pfaff, Garth E. Graham
2022, Open-File Report 2022-1046
Numerous porphyry copper-molybdenum-gold and epithermal deposits define a belt that extends from Eastern Alaska to western Yukon, Canada. An orientation study conducted near the Taurus porphyry deposit was designed to test methods that require minimal sample collection, preparation, and analytical time to determine the viability of indicator mineral studies as...
Marine minerals in Alaska — A review of coastal and deep-ocean regions
Amy Gartman, Kira Mizell, Douglas C. Kreiner
2022, Professional Paper 1870
Minerals occurring in marine environments span the globe and encompass a broad range of mineral categories, forming within varied geologic and oceanographic settings. They occur in coastal regions, either from the continuation or mechanical reworking of terrestrial mineralization, as well as in the deep ocean, from diagenetic, hydrogenetic, and hydrothermal...
Alaska focus area definition for data acquisition for potential domestic sources of critical minerals in Alaska for antimony, barite, beryllium, chromium, fluorspar, hafnium, magnesium, manganese, uranium, vanadium, and zirconium
Douglas C. Kreiner, James V. Jones III, George N. Case
2022, Open-File Report 2019-1023-E
Phase 3 of the Earth Mapping Resources Initiative (Earth MRI) focuses on geologic belts that are favorable for hosting mineral systems that could contain the critical minerals antimony, barite, beryllium, chromium, fluorspar, hafnium, magnesium, manganese, uranium, vanadium, and zirconium. Prior phases of the Earth MRI program in Alaska focused...
Focus areas for data acquisition for potential domestic resources of 13 critical minerals in the conterminous United States and Puerto Rico — Antimony, barite, beryllium, chromium, fluorspar, hafnium, helium, magnesium, manganese, potash, uranium, vanadium, and zirconium
Jane M. Hammarstrom, Connie L. Dicken, Laurel G. Woodruff, Allen K. Andersen, Sean T. Brennan, Warren C. Day, Benjamin J. Drenth, Nora K. Foley, Susan Hall, Albert H. Hofstra, Anne E. McCafferty, Anjana K. Shah, David A. Ponce
2022, Open-File Report 2019-1023-D
The Earth Mapping Resources Initiative (Earth MRI) is conducted in phases to identify areas for acquiring new geologic framework data to identify potential domestic resources of the 35 mineral materials designated as critical minerals for the United States. This report describes the data sources and summary results for 13 critical...
Upper-plate structure and tsunamigenic faults near the Kodiak Islands, Alaska, USA
Marlon D. Ramos, Lee M Liberty, Peter J. Haeussler, Robert John Humphreys
2022, Geosphere (18) 1474-1491
The Kodiak Islands lie near the southern terminus of the 1964 Great Alaska earthquake rupture area and within the Kodiak subduction zone segment. Both local and trans-Pacific tsunamis were generated during this devastating megathrust event, but the local tsunami source region and the causative faults are poorly understood. We provide...
Virtual special issue of recent advances on gas hydrates scientific drilling in Alaska
Ray Boswell, Koji Yamamoto, Timothy S. Collett, Norihiro Okinaka
2022, Journal of Energy & Fuels (36) 7921-7924
Gas hydrate refers to a non-stoichiometric clathrate that forms spontaneously in the natural environment whenever sufficient quantities of gases of appropriate size (most commonly methane) interact with abundant water under specific conditions of temperature and pressure. (1,2) Such...
Revisiting the 1899 earthquake series using integrative geophysical analysis in Yakutat Bay, Alaska
Maureen A. L. Walton, Sean P.S. Gulick, Peter J. Haeussler
2022, Geosphere (18) 1453-1473
A series of large earthquakes in 1899 affected southeastern Alaska near Yakutat and Disenchantment Bays. The largest of the series, a MW 8.2 event on 10 September 1899, generated an ~12-m-high tsunami and as much as 14.4 m of coseismic uplift in Yakutat Bay, the...
African penguins and localized fisheries management: Response to Butterworth and Ross-Gillespie
Bill Sydeman, Gene Hunt, E.K. Pikitch, J. Parrish, John F. Piatt, D. Boersma, L. Kaufman, D. L. Anderson, S. Thompson, Richard B. Sherley
2022, ICES Journal of Marine Science
We present a response to Butterworth and Ross-Gillespie's (2022) comment on our perspectives on how forage fish fisheries are impacting the endangered African penguin (Sphenicus demersus), and corresponding management options. Butterworth and Ross-Gillespie overstate model uncertainties and downplay the clear ecological and conservation significance of the fisheries closure experiment....
The North American tree-ring fire-scar network
Ellis Margolis, Christopher H. Guiterman, Raphael Chavardès, Jonathan D. Coop, Kelsey Copes-Gerbitz, Denyse A. Dawe, Donald A. Falk, James D. Johnston, Evan Larson, Hangkyo Lim, Joseph M. Marschall, Cameron E. Naficy, Adam T. Naito, Marc-André Parisien, Sean A. Parks, Jeanne Portier, Helen M. Poulos, Kevin M. Robertson, James H. Speer, Michael C. Stambaugh, Thomas W. Swetnam, Alan J. Tepley, Ichchha Thapa, Craig D. Allen, Yves Bergeron, Lori D. Daniels, Peter Z. Fulé, David Gervais, Martin P. Girardin, Grant L. Harley, Jill E. Harvey, Kira M. Hoffman, Jean M. Huffman, Matthew D. Hurteau, Lane B. Johnson, Charles W. Lafon, Manuel K. Lopez, R. Stockton Maxwell, Jed Meunier, Malcolm North, Monica T. Rother, Micah R. Schmidt, Rosemary L. Sherriff, Lauren A. Stachowiak, Alan H. Taylor, Erana J. Taylor, Valerie Trouet, Miguel L. Villarreal, Larissa L. Yocom, Karen B. Arabas, Alexis H. Arizpe, Dominique Arseneault, Alicia Azpeleta Tarancón, Christopher H. Baisan, Erica Bigio, Franco Biondi, Gabriel D. Cahalan, Anthony C. Caprio, Julián Cerano-Paredes, Brandon M. Collins, Daniel C. Dey, Igor Drobyshev, Calvin A. Farris, M. Adele Fenwick, William T. Flatley, M. Lisa Floyd, Ze'ev Gedalof, Andres Holz, Lauren F. Howard, David W. Huffman, Jose Iniguez, Kurt F. Kipfmueller, Stanley G Kitchen, Keith Lombardo, Donald McKenzie, Andrew G. Merschel, Kerry L. Metlen, Jesse Minor, Christopher D. O'Connor, Laura Platt, William J. Platt, Thomas Saladyga, Amanda B. Stan, Scott L. Stephens, Colleen Sutheimer, Ramzi Touchan, Peter J. Weisberg
2022, Ecosphere (13)
Fire regimes in North American forests are diverse and modern fire records are often too short to capture important patterns, trends, feedbacks, and drivers of variability. Tree-ring fire scars provide valuable perspectives on fire regimes, including centuries-long records of fire year, season, frequency, severity, and size....
Paralytic shellfish toxins associated with Arctic Tern mortalities in Alaska
Caroline R. Van Hemert, John Harley, Gwen Baluss, Matthew M. Smith, Robert J. Dusek, Julia S. Lankton, D. Ransom Hardison, Sarah K. Schoen, Robert Kaler
2022, Harmful Algae (117)
Harmful algal blooms produce biotoxins that can injure or kill fish, wildlife, and humans. These blooms occur naturally but have intensified in many locations globally due to recent climatic changes, including ocean warming. Such changes are especially pronounced in northern regions, where...
Comparisons of Coupled Model Intercomparison Project Phase 5 (CMIP5) and Coupled Model Intercomparison Project Phase 6 (CMIP6) sea-ice projections in polar bear (Ursus maritimus) ecoregions during the 21st century
David C. Douglas, Todd C. Atwood
2022, Open-File Report 2022-1062
Climate model projections are commonly used to assess potential impacts of global warming on a breadth of social, economic, and environmental topics. Modeling centers throughout the world coordinate to apply a consistent suite of radiative forcing experiments so that all model outputs can be collectively analyzed and compared. Three...
Antibiotic resistance in free-ranging wildlife
Andrew M. Ramey, Christina Ahlstrom
2022, Book chapter, Fowler’s zoo and wild animal medicine: Current therapy, Vol 10
In this chapter, we provide an overview of antimicrobial resistant (AMR) bacteria in wildlife through the presentation of general trends of occurrence among both captive and free-ranging wild animal populations, discussion of importance to human health and wildlife conservation, and identification of priority areas for future research and monitoring efforts....
A model of the spatiotemporal dynamics of soil carbon following coastal wetland loss applied to a Louisiana salt marsh in the Mississippi River Deltaic Plain
Donald R. Schoolmaster Jr., Camille Stagg, Courtney Creamer, Claudia Laurenzano, Eric Ward, Mark Waldrop, Melissa M. Baustian, Tiong Aw, Sergio Merino, Rachel Katherine Villani, Laura Scott
2022, Journal of Geophysical Research: Biogeosciences (127)
The potential for carbon sequestration in coastal wetlands is high due to protection of carbon (C) in flooded soils. However, excessive flooding can result in the conversion of the vegetated wetland to open water. This transition results in the loss of wetland habitat in addition to the potential loss of...
The DDT-induced decline influenced genetic diversity in naturally-recovered peregrine falcons (Falco peregrinus) nesting within the Alaska Arctic and eastern Interior
Sarah A. Sonsthagen, Ted Swem, Skip Ambrose, Melanie J. Flamme, Clayton M White, George K Sage, Sandra L Talbot
2022, Ibis (164) 1265-1272
We assessed the influence of the severe mid-20th century population decline on genetic diversity in non-augmented peregrine falcon (Falco peregrinus) populations nesting within Alaska Arctic and eastern Interior. Microsatellite and mitochondrial DNA (mtDNA) data were analyzed for peregrine falcons sampled from three periods: pre-decline, decline, and post-decline....
Using in situ/ex situ research collaborations to support polar bear conservation
Randi Meyerson, Todd C. Atwood
Eric Miller, Nadine Lamberski, Paul Calle, editor(s)
2022, Book chapter, Fowler's zoo and wild animal medicine current therapy
A warming Arctic threatens the long-term persistence of polar bears (Ursus maritimus) in the wild. Historically, little collaboration existed between the in situ and ex situ polar bear scientific communities. However, for the past decade, zoo professionals, government agencies, and non-governmental organizations (NGO’s) have partnered to leverage resources and expertise...
The ice don’t lie
Todd C. Atwood
2022, The Wildlife Professional 39-41
No abstract available....
Evaluating the efficacy of aerial infrared surveys to detect artificial polar bear dens
Susannah P. Woodruff, Justin J Blank, Sheyna S Wisdom, Ryan H. Wilson, George M. Durner, Todd C. Atwood, Craig J Perham, Christina HM Pohl
2022, Wildlife Society Bulletin (46)
The need to balance economic development with impacts to Arctic wildlife has been a prominent subject since petroleum exploration began on the North Slope of Alaska, USA, in the late 1950s. The North Slope region includes polar bears (Ursus maritimus) of the southern Beaufort Sea subpopulation,...
Late Paleoproterozoic to early Mesoproterozoic deposition of quartz arenites across southern Laurentia
L. Gordon Medaris Jr., Christopher G. Daniel, Michael F. Doe, James V. Jones III, Joshua J. Schwartz
Steven J. Whitmeyer, Michael L. Williams, Dawn A. Kellett, Basil Tikoff, editor(s)
2022, Book chapter, Laurentia: Turning points in the evolution of a continent
Supermature siliciclastic sequences were deposited between 1.64 Ga and 1.59 Ga over a broad swath of southern Laurentia in the Archean, Penokean, Yavapai, and Mazatzal Provinces. These siliciclastic sequences are notable for their extreme mineralogical and chemical maturity, being devoid of detrital feldspar and ferromagnesian minerals, containing the clay mineral...
Prioritizing habitats based on abundance and distribution of molting waterfowl in the Teshekpuk Lake Special Area of the National Petroleum Reserve, Alaska
Paul L. Flint, Vijay P. Patil, Bradley Shults, Sarah J. Thompson
2022, Global Ecology and Conservation (38)
The National Petroleum Reserve in Alaska (NPR-A) encompasses more than 9.5 million hectares of federally managed land on the Arctic Coastal Plain of northern Alaska, where it supports a diversity of wildlife, including millions of migratory birds. Within the NPR-A, Teshekpuk Lake and the surrounding area provide important habitat for...
Evaluating the paleoenvironmental significance of sediment grain size in Bering Sea sediments during Marine Isotope Stage 11
Natalie Thompson, Beth Elaine Caissie
2022, Stratigraphy (19) 119-139
Grain size is an important textural property of sediments and is widely used in paleoenvironmental studies as a means to infer changes in the sedimentary environment. However, grain size parameters are not always easy to interpret without a full understanding of the factors that influence grain size. Here, we measure...
