A circumpolar study unveils a positive non-linear effect of temperature on arctic arthropod availability that may reduce the risk of warming-induced trophic mismatch for breeding shorebirds
Aurelie Chagnon-Lafortune, Eliane Duchesne, Pierre Legagneux, Laura McKinnon, Jeroen Reneerkens, Nicolas Casajus, Kenneth F. Abraham, Elise Bolduc, Glen S. Brown, Stephen C. Brown, H. River Gates, Olivier Gilg, Marie-Andrée Giroux, Kirsty Gurney, Steve Kendall, Eunbi Kwon, Richard B. Lanctot, David B. Lank, Nicolas Lecomte, Maria Leung, Joe Liebezeit, R.I.G. Morrison, Erica Nol, David C. Payer, Donald Reid, Daniel R. Ruthrauff, Sarah T. Saalfeld, Brett K. Sandercock, Paul Smith, Niels Martin Schmidt, Ingrid Tulp, David H. Ward, Toke Thomas Hoye, Dominique Berteaux, Joel Bety
2024, Global Change Biology (30)
Seasonally abundant arthropods are a crucial food source for many migratory birds that breed in the Arctic. In cold environments, the growth and emergence of arthropods are particularly tied to temperature. Thus, the phenology of arthropods is anticipated to undergo a rapid change in response to a warming climate, potentially...
Earthquake scenario development in conjunction with the 2023 USGS National Seismic Hazard Model
Robert Edward Chase, Kishor S. Jaiswal, Mark D. Petersen
2024, Earthquake Spectra (40) 1818-1844
We present earthquake scenarios developed to accompany the release of the 2023 update to the US Geological Survey National Seismic Hazard Model (NSHM). Scenarios can serve a range of local and regional needs, from developing proactive-targeted mitigation strategies for minimizing impending risk to aiding emergency management planning. These deterministic scenarios...
Mechanisms by which marine heatwaves impact seabirds
John F. Piatt, Mayumi L. Arimitsu, Sarah Ann Thompson, Rob Suryan, Rory Wilson, Kyle Elliott, W.J. Sydeman
2024, MEPS (737) 1-8
Marine heatwaves (MHWs) are characterized by periods of extreme warming of local to basin-scale marine habitat. Effects of MHWs on some seabirds (e.g. mass die-offs) are well documented, but mechanisms by which seabirds respond to MHWs remain poorly understood. Following from a symposium at the 3rd World Seabird Conference, this Theme...
Assessing the sustainability of Pacific walrus harvest in a changing environment
Devin Johnson, Joseph Michael Eisaguirre, Rebecca L. Taylor, Erik Andersen, Joel Garlich-Miller
2024, Preprint
Harvest sustainability is a primary goal of wildlife management and conservation, and in a changing world it is increasingly important to consider environmental drivers of population dynamics alongside harvest in cohesive management plans. This is particularly pertinent for harvested species that are acutely experiencing effects of climate change. The Pacific...
Stratigraphy, paleoflora, and tectonic setting of the Paleogene Sheep Creek volcanic field, central Alaska
Timothy White, David Sunderlin, Dwight Bradley
2024, Professional Paper 1814-G
In this paper, we provide new information on the stratigraphy and paleoflora of the Sheep Creek volcanic field in the Alaska Range that bolsters our understanding of a key interval in the tectonic, paleoclimate, and paleoenvironmental history of the northern Cordillera. Although the distribution and basic stratigraphy of these rocks...
A phylogeographical study of the discontinuously distributed Harlequin Duck (Histrionicus histrionicus)
Kim T Scribner, Sandra Talbot, Barbara J. Pierson, John D Robinson, Richard B. Lanctot, Daniel Esler, Kathryn Dickson
2024, Ibis (166) 1218-1240
Species distributions are often indicative of historical biogeographical events and contemporary spatial biodiversity patterns. The Harlequin Duck Histrionicus histrionicus is a sea duck of conservation concern that has a disjunct distribution, with discrete portions of its range associated with northern Pacific and Atlantic Ocean basins. Movement...
Testing megathrust rupture models using tsunami deposits
SeanPaul La Selle, Alan R. Nelson, Robert C. Witter, Bruce E. Jaffe, Guy Gelfenbaum, Jason Scott Padgett
2024, JGR Earth Surface (129)
The 26 January 1700 CE Cascadia subduction zone earthquake ruptured much of the plate boundary and generated a tsunami that deposited sand in coastal marshes from northern California to Vancouver Island. Although the depositional record of tsunami inundation is extensive in some of these marshes, few sites...
Does the extent of glacial cover across watersheds and discharge periods affect dietary resource use of nearshore fishes in the Northern Gulf of Alaska?
Lindsey Stadler, Kristen Gorman, Vanessa R. von Biela, Andrew C. Seitz, Katrin Iken
2024, Journal of Experimental Marine Biology and Ecology (577)
Northern high-latitude glaciers impact nearshore marine ecosystems through the discharge of cold and fresh waters, including nutrients and organic matter. Fishes are important integrators of ecosystem processes and hold key positions in the transfer of energy to higher trophic positions...
Earthquake relocations delineate discrete a fault network and deformation corridor throughout Southeast Alaska and Southwest Yukon
Katherine M. Biegel, Jeremy M. Gosselin, Jan Dettmer, Maurice Colpron, Eva Enkelmann, Jonathan Saul Caine
2024, Tectonics (43)
Deformation in southeastern Alaska and southwest Yukon is governed by the subduction and translation of the Pacific-Yakutat plates relative to the North American plate in the St. Elias region. Despite notable historical seismicity and major regional faults, studies of the region between the Fairweather and Denali faults are complicated by glacial...
Why do avian responses to change in Arctic green-up vary?
Eveling A. Tavera, David B. Lank, David C. Douglas, Brett K. Sandercock, Richard B. Lanctot, Niels M. Schmidt, Jeroen Reneerkens, David H. Ward, Joel Bety, Eunbi Kwon, Nicolas Lecomte, Cheri L Gratto-Trevor, Paul A. Smith, Willow B. English, Sarah T. Saalfeld, Stephen C. Brown, H. River Gates, Erica Nol, Joseph R. Liebezeit, Rebecca L. McGuire, Laura McKinnon, Steve Kendall, Martin D. Robards, Megan Boldenow, David C. Payer, Jennie Rausch, Mikhail Soloviev, Diana V. Solovyeva, Steve Zack, Jordyn Stalwick, Kirsty E. B. Gurney
2024, Article
Global climate change has altered the timing of seasonal events (i.e., phenology) for a diverse range of biota. Within and among species, however, the degree to which alterations in phenology match climate variability differ substantially. To better understand factors driving these differences, we evaluated...
Repeated coseismic uplift of coastal lagoons above the Patton Bay Splay Fault System, Montague Island, Alaska, USA
Jessica DePaolis, Tina Dura, Robert C. Witter, Peter J. Haeussler, Adrian Bender, Janet H. Curran, D. Reide Corbett
2024, JGR Solid Earth (129)
Coseismic slip on the Patton Bay splay fault system during the 1964 Mw 9.2 Great Alaska Earthquake contributed to local tsunami generation and vertically uplifted shorelines as much as 11 m on Montague Island in Prince William Sound (PWS). Sudden uplift of 3.7–4.3 m caused coastal lagoons along the island's northwestern coast to...
The dominance and growth of shallow groundwater resources in continuous permafrost environments
Joshua C. Koch, Craig T. Connolly, Carson Baughman, Marisa Repasch, Heather Best, Andrew G. Hunt
2024, Proceedings of the National Academy of Sciences (121)
Water is a limited resource in Arctic watersheds with continuous permafrost because freezing conditions in winter and the impermeability of permafrost limit storage and connectivity between surface water and deep groundwater. However, groundwater can still be an important source of surface water in such settings, feeding springs...
Metal mobilization from thawing permafrost to aquatic ecosystems is driving rusting of Arctic streams
Jonathan A. O’Donnell, Michael P. Carey, Joshua C. Koch, Carson Baughman, Kenneth Hill, Christian E. Zimmerman, Patrick F. Sullivan, Roman J. Dial, Timothy J. Lyons, David J. Cooper, Brett A. Poulin
2024, Communications Earth and Environment (5)
Climate change in the Arctic is altering watershed hydrologic processes and biogeochemistry. Here, we present an emergent threat to Arctic watersheds based on observations from 75 streams in Alaska’s Brooks Range that recently turned orange, reflecting increased loading of iron and toxic metals. Using remote sensing,...
Infectivity of wild-bird origin Influenza A viruses in Minnesota wetlands across seasons
Rebecca L. Poulson, Andrew B. Reeves, Christina Ahlstrom, Laura Celeste Scott, Laura E. Hubbard, Alinde Fojtik, Deborah L. Carter, David E. Stallknecht, Andrew M. Ramey
2024, Pathogens (13)
The environmental tenacity of influenza A viruses (IAVs) in the environment likely plays a role in their transmission; IAVs are able to remain infectious in aquatic habitats and may have the capacity to seed outbreaks when susceptible wild bird hosts utilize these same environments months or even seasons later....
Earthquake-triggered ground-failure inventory associated with the M7.1 2018 Southcentral Alaska earthquake
Sabrina N. Martinez, Kate E. Allstadt, Eric M. Thompson, Sonia Ellison, Lauren N. Schaefer, Kelli Wadsworth Baxstrom
2024, Earthquake Spectra (40) 2161-2178
The 30 November 2018, magnitude (Mw) 7.1 earthquake in Southcentral Alaska triggered substantial landslides, liquefaction, and ground cracking throughout the region, resulting in widespread geotechnical damage to buildings and infrastructure. Despite a challenging reconnaissance and remote-sensing environment, we constructed a detailed digital inventory of ground failure associated...
Local environmental conditions structured discrete fish assemblages in Arctic lagoons
Sarah M. Laske, Vanessa R. von Biela, Ashley E. Stanek, Kenneth H. Dunton
2024, Polar Biology (47) 551-568
Rapid changes in sea ice extent and changes in freshwater inputs from land are rapidly changing the nature of Arctic estuarine ecosystems. In the Beaufort Sea, these nearshore habitats are known for their high productivity and mix of marine resident and diadromous fishes that have great...
Fairweather transform boundary Oligocene to present orogenesis: Fairweather Range vertical extrusion and rotation of the Yakutat microplate at ca. 3 Ma
Jeff Benowitz, Richard O. Lease, Peter J. Haeussler, Terry Pavlis, Michael Mann
2024, Tectonophysics (880)
Oblique-slip along transform fault boundaries is often partitioned between a strike-slip system and thrust faults that accommodate contraction. However, topography along the Yakutat-North American transform (Fairweather fault), is asymmetric with low-terrain above active thrusts on the western, Yakutat side of the...
A great tsunami earthquake component of the 1957 Aleutian Islands earthquake
Yoshiki Yamazaki, Thorne Lay, Kwok Fai Cheung, Robert C. Witter, SeanPaul La Selle, Bruce E. Jaffe
2024, Earth and Planetary Science Letters (637)
The great 1957 Aleutian Islands earthquake ruptured ∼1200 km of the plate boundary along the Aleutian subduction zone and produced a destructive tsunami across Hawaiʻi. Early seismic and tsunami analyses indicated that large megathrust fault slip was concentrated in the western Aleutian Islands, but tsunami...
Deep-water first occurrences of Ediacara biota prior to the Shuram carbon isotope excursion in the Wernecke Mountains, Yukon, Canada
Thomas H. Boag, James F. Busch, Jared T. Gooley, Justin Strauss, Erik A Sperling
2024, Geobiology (22)
Ediacara-type macrofossils appear as early as ~575 Ma in deep-water facies of the Drook Formation of the Avalon Peninsula, Newfoundland, and the Nadaleen Formation of Yukon and Northwest Territories, Canada. Our ability to assess whether a deep-water origination of the Ediacara biota is a...
Annual review 2023: Critical minerals
Graham W. Lederer, James V. Jones III, Darcy McPhee, Jeffrey L. Mauk, Robert R. Seal, II, Kate M. Campbell, Jane M. Hammarstrom, Paul A. Bedrosian, Patricia Grace Macqueen, Garth E. Graham, Federico Solano, George N.D. Case, David George Pineault
2024, Mining Engineering (76) 29-42
No abstract available....
Drought, fire, and archeology in the Jemez Mountains, New Mexico
Anastasia Steffen, Jamie Civitello, Rachel A. Loehman, Robert Parmenter
2024, Intermountain Park Science (2)
In the Jemez Mountains of New Mexico, cultural resources and traditional cultural landscapes are vulnerable to compounded impacts of changing climate and wildfires. Here, we discuss impacts to archeological resources observed in recent, high-severity fires, including at Bandelier National Monument and Valles Caldera National Preserve, and describe an interdisciplinary effort...
Snow avalanches are a primary climate-linked driver of mountain ungulate populations
Kevin White, Eran Hood, Gabriel Wolken, Erich H. Peitzsch, Yves Buhler, Katreen Wikstrom Jones, Chris Darimont
2024, Nature Communications Biology (7)
Snow is a major, climate-sensitive feature of the Earth’s surface and catalyst of fundamentally important ecosystem processes. Understanding how snow influences sentinel species in rapidly changing mountain ecosystems is particularly critical. Whereas effects of snow on food availability, energy expenditure, and predation are well documented, we...
Automatic identification and quantification of volcanic hotspots in Alaska using HotLINK: The hotspot learning and identification network
Pablo Saunders-Shultz, Taryn Lopez, Hannah R. Dietterich, Tarsilo Girona
2024, Frontiers in Earth Science (12)
An increase in volcanic thermal emissions can indicate subsurface and surface processes that precede, or coincide with, volcanic eruptions. Space-borne infrared sensors can detect hotspots—defined here as localized volcanic thermal emissions—in near-real-time. However, automatic hotspot detection systems are needed to efficiently analyze the large quantities of data produced....
Detrital zircons and the magmatic history of Viti Levu, Fiji
Allen Stork, James B Gill, Erin Todd, Elizabeth Kathleen Drewes-Todd
2024, Australian Journal of Earth Sciences (71) 600-614
We integrate the existing detrital zircon data from multiple modern river sediment samples on Viti Levu, Fiji, with the most current available geological and topographic mapping of the respective river drainage basins to compare detrital populations with potential bedrock sources. The temporal and spatial variations in zircon geochemistry supplement what...
Where east meets west: Phylogeography of the high Arctic North American brant goose
Robert Wilson, Sean Boyd, Sarah A. Sonsthagen, David H. Ward, Preben Clausen, Kathryn Dickson, Bartwolt Ebbinge, Gudmundur Gudmundsson, George Sage, Jolene Rearick, Dirk V. Derksen, Sandra Talbot
2024, Ecology and Evolution (14)
Genetic variation in Arctic species is often influenced by vicariance during the Pleistocene, as ice sheets fragmented the landscape and displaced populations to low- and high-latitude refugia. The formation of secondary contact or suture zones during periods of ice sheet retraction has important consequences...
