HE41A:
Ecosystem Structure and Processes in a Changing Arctic I

Session ID#: 92325

Session Description:
The rate of atmospheric warming in the Arctic is outpacing that of other regions, and is associated with sea ice loss, warming ocean temperatures, changes in the hydrological cycle, and impacted ecosystems. Temperature-growth relations, nutrient cycling dynamics, altered seasonality, changing freshwater balances, expanded and contracted species range extensions, and new trophic pathways may each affect biodiversity, the population status of key species, and relations between humans and marine resources. As environmental change continues, can we anticipate how future Arctic ecosystems will compare to those of the past and present? Will the effects of a changing climate be the same across various Arctic regions? Organizers welcome presentations from all regions of the Arctic examining the drivers, rates, processes, and mechanistic controls that impart structure on any aspect of the high-latitude marine ecosystem.
Co-Sponsor(s):
  • ME - Marine Ecology and Biodiversity
  • OB - Ocean Biology and Biogeochemistry
  • PI - Physical-Biological Interactions
Index Terms:
Primary Chair:  Seth L Danielson, University of Alaska Fairbanks, College of Fisheries and Ocean Sciences, Fairbanks, AK, United States
Co-chairs:  Lee Cooper, Univ MD Center Enviro Science, Solomons, MD, United States, Jacqueline M. Grebmeier, University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States and Katrin Iken, University of Alaska Fairbanks, College of Fisheries and Ocean Sciences, Fairbanks, AK, United States
Primary Liaison:  Seth L Danielson, UAF, College of Fisheries and Ocean Sciences, Fairbanks, AK, United States
Moderators:  Lee Cooper, Univ MD Center Enviro Science, Solomons, MD, United States, Jacqueline M. Grebmeier, University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States and Seth L Danielson, UAF, College of Fisheries and Ocean Sciences, Fairbanks, AK, United States
Student Paper Review Liaison:  Jacqueline M. Grebmeier, University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States

Abstracts Submitted to this Session:

Impacts of unprecedented loss of sea ice on multiple trophic levels and ecosystem structure in the Chukchi and Beaufort Seas (655646)
Esther Diane Goldstein1, Kristin Cieciel2, Dan Cooper1, Janet Duffy-Anderson1, Lisa B Eisner3, Ed Farley4, David Kimmel5, Kathy Kuletz6, Carol A Ladd7, Elizabeth Logerwell8, Calvin W. Mordy9, Adam H Spear10 and Phyllis J Stabeno11, (1)NOAA Fisheries, Alaska Fisheries Science Center, Seattle, WA, United States, (2)NOAA Fisheries, Alaska Fisheries Science Center, Auke Bay Laboratories, Juneau, AK, United States, (3)NOAA - Alaska Fisheries Science Center, Seattle, WA, United States, (4)NOAA Fisheries, Auke Bay Laboratory, Juneau, United States, (5)NOAA, Alaska Fisheries Science Center, Seattle, WA, United States, (6)US Fish and Wildlife Service, Migratory Bird Management, Anchorage, AK, United States, (7)NOAA/PMEL, Seattle, WA, United States, (8)NOAA/NMFS/Alaska Fisheries Science Center, Resource Assessment and Conservation Engineering Division, Seattle, WA, United States, (9)Joint Institute for the Study of the Atmosphere and Ocean, Seattle, WA, United States, (10)NOAA, Alaska Fisheries Science Center, Seattle, United States, (11)NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States
Flow Patterns over the Chukchi Continental Shelf : 2010-2019 (656095)
Phyllis J Stabeno1, Shaun W Bell1, Ryan M McCabe2, Carol A Ladd3 and Kevin R Wood1, (1)NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States, (2)University of Washington, Joint Institute for the Study of the Atmosphere and Ocean, Seattle, WA, United States, (3)NOAA/PMEL, Seattle, WA, United States
Beaufort Sea Upwelling and Corresponding Shifts in the Eukaryotic Community (653469)
Sveinn V Einarsson1, Dreux Chappell2, Kimberly Powell3, Kate E Lowry4, Robert S Pickart4 and Carin J Ashjian5, (1)Old Dominion University, Ocean, Earth, and Atmospheric Sciences, Norfolk, VA, United States, (2)Old Dominion University, Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States, (3)Old Dominion University, Ocean, Earth & Atmospheric Sciences, Norfolk, VA, United States, (4)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (5)Woods Hole Oceaonographic Institution, Woods Hole, MA, United States
Higher Phytoplankton Biomass Drives Recent Increases in Arctic Production (648357)
Kevin R Arrigo, Katelyn Lewis and Gert van Dijken, Stanford University, Earth System Science, Stanford, CA, United States
Arctic zooplankton and the Lightscape of Fear: Behavioural Responses to Light Buffer Diel and Seasonal Changes in Visual Predation Risk (650416)
Laura Hobbs1,2, Neil Banas2, Jonathan Cohen3 and Øystein Varpe4, (1)Scottish Association for Marine Science, Oban, United Kingdom, (2)University of Strathclyde, Glasgow, United Kingdom, (3)University of Delaware, School of Marine Science and Policy, Lewes, DE, United States, (4)University Centre in Svalbard, Longyearbyen, Norway
Morphological traits of zooplankton reveal ecological patterns along ice melt dynamics in the Arctic (645753)
Laure Vilgrain, Laboratoire d'Océanographie de Villefranche-sur-Mer, Villefranche-sur-Mer, France, Jean-Olivier Irisson, University Pierre and Marie Curie Paris VI, Lab. d'oceanographie, Villefranche, France, Sakina-Dorothée Ayata, LOV UPMC/CNRS, Villefranche sur mer Cedex, France, Marc Picheral, CNRS, Laboratoire d'Océanographie de Villefranche sur Mer, Paris Cedex 16, France, Marcel Babin, Takuvik Joint International Laboratory, Université Laval & CNRS, Québec, QC, Canada and Frederic Maps, Université Laval, Quebec, QC, Canada
Year-round Microbial Community Dynamics in the Arctic Ocean (Fram Strait; LTER Hausgarten) (636015)
Matthias Wietz1,2, Katja Metfies3, Wilken-Jon von Appen4, Sinhue Torres-Valdes2, Magda Cardozo5, Christina Bienhold6 and Antje Boetius2, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Bremerhaven, Germany, (2)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (3)Jacobs University, Germany, (4)Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany, (5)Max Planck Institute for Marine Microbiology, Bremen, Germany, (6)Max Planck Institute for Marine Microbiology, HGF-MPG Group for Deep Sea Ecology and Technology, Bremen, Germany
Utilization and Importance of Sea Ice Derived Organic Carbon to Benthic Communities of the Chukchi Sea: Evidence from Highly Branched Isoprenoid Biomarkers (639089)
Chelsea Wegner1, Thomas A Brown2, Catherine Lalande3, Jacqueline M. Grebmeier1 and Lee W Cooper1, (1)University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States, (2)Scottish Association for Marine Science, Oban, United Kingdom, (3)Laval University, Biology Department, Quebec City, QC, Canada