HE42A:
Ecosystem Structure and Processes in a Changing Arctic II

Session ID#: 92329

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:  Jacqueline M. Grebmeier, University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States, Lee Cooper, Univ MD Center Enviro Science, 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:

Rates and pathways of sediment organic-matter processing across the northern Bering and southern Chukchi Sea shelf (656228)
Sarah M Hardy1, Andrew Thurber2, Brittany R Jones1 and Sarah Seabrook3, (1)University of Alaska Fairbanks, Fairbanks, AK, United States, (2)Oregon State University, Corvallis, OR, United States, (3)Oregon State University, CEOAS, Corvallis, OR, United States
Sediment oxygen consumption in the Pacific Arctic: Impacts of increased temperature and food supply on the benthic community and individual dominant organisms (646250)
Christina Goethel, University of Maryland (UMCES CBL), Solomons, MD, United States, Jacqueline M. Grebmeier, University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States, Lee Cooper, Univ MD Center Enviro Science, Solomons, MD, United States and Christopher Rowe, Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Solomons, United States
Benthic community response to seasonal variations in the pelagic-benthic coupling: In situ high-resolution studies of the benthic oxygen uptake in Arctic deep-sea sediments (636042)
Frank Wenzhofer, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany, Eva-Maria Nothig, Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany, Autun Purser, Alfred-Wegener-Institute Helmholtz-Centrum for Polar and Marine Research, Germany, Melanie Bergmann, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany and Thomas Soltwedel, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Bremerhaven, Germany
Environmental change in the Arctic is reflected in the decadal trend of stable nitrogen isotopes in harp seal teeth over the past 60 years. (639186)
Camille De La Vega1, Rachel Jeffreys2, Joanna Kershaw3, David J Yurkowski4, Anne Kirstine Frie5, Steve Ferguson4, Garry B Stenson6, Martin Biuw7, Sophie Smout8 and Claire Mahaffey1, (1)University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom, (2)University of Liverpool, Earth, Ocean and Ecological Sciences, United Kingdom, (3)University of St Andrews, St Andrews, Fife, KY16 8LB, UK, United Kingdom, (4)Freshwater Institute, Fisheries and Oceans Canada, Winnipeg, MB R3T 2N6, Canada, MB, Canada, (5)Institute of marine research, Nordnes NO-5817 Bergen, Norway, Norway, (6)Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada, St. John's, NF, Canada, (7)Norwegian Polar Institute, Polar Environmental Centre, Tromsø, Norway, Norway, (8)University of St Andrews, United Kingdom
Multifaceted biodiversity distributions in the Eastern Bering Sea over the recent decades, 1990-2018 (644978)
Irene D. Alabia1, Jorge García Molinos1, Sei-ichi Saitoh1, Takafumi Hirata1, Toru Hirawake2 and Franz J Mueter3, (1)Hokkaido University, Arctic Research Center, Sapporo, Japan, (2)Hokkaido University, Faculty of Fisheries Sciences, Hakodate, Japan, (3)UAF, College of Fisheries and Ocean Sciences, Juneau, AK, United States
A new framework for interregional comparisons of biogeochemical models across the Arctic Marginal Ice Zone (651952)
Fabian Grosse, University of Strathclyde, Mathematics and Statistics, Glasgow, United Kingdom, Neil Banas, University of Strathclyde, Glasgow, United Kingdom, Trevor Martin Sloughter, University of Strathclyde, Department of Mathematics & Statistics, Glasgow, United Kingdom, Marie Porter, Scottish Association for Marine Science, Oban, United Kingdom, Jinlun Zhang, University of Washington, Seattle, WA, United States and Ingrid Ellingsen, SINTEF Ocean, Trondheim, Norway
Acceleration of the hydrological cycle with climate warming disrupts marine ecosystem function in the Arctic Ocean (646701)
Weiwei Fu1, Jefferson Keith Moore2, Francois Primeau2 and James Tremper Randerson3, (1)University of California Irvine, Department of Earth System Science, Irvine, CA, United States, (2)University of California Irvine, Earth System Science, Irvine, CA, United States, (3)University of California Irvine, Department of Earth System Science, Irvine, United States
Winners and Losers in a Warming Arctic: Potential Habitat Gain and Loss for Epibenthic Invertebrates of the Chukchi and Bering Seas (519783)
Elizabeth Logerwell, NOAA/NMFS/Alaska Fisheries Science Center, Resource Assessment and Conservation Engineering Division, Seattle, WA, United States, Muyin Wang, University of Washington, Cooperative Institute for Climate, Ocean, and Ecosystem Studies, Seattle, WA, United States, Lis Lindal Jorgensen, Institute of Marine Research, Tromso, Norway and Kimberly Rand, NOAA Alaska Fisheries Science Center, Seattle, WA, United States