HE002
Biogeochemical Fluxes and Ecological Processes in the Rapidly Changing Coastal Arctic
Session ID#: 85374
Session Description:
The Arctic of today is a new environment, warming faster and changing more rapidly than any other region on the planet; its ice is melting, its permafrost is thawing, its ocean is acidifying. Yet, estimates of the biogeochemical interactions and exchanges between interconnected Arctic systems—the land and the ocean—are poorly constrained.
This session will bring together modelers, observationalists, and stakeholders to exchange information and improve understanding on the current ‘state-of-knowledge’, gaps, and challenges in observing and modeling biogeochemical fluxes and ecological processes in the rapidly changing coastal Arctic. Specific topics may include synthesis of activities across coastal Arctic systems and integration of observations across scales (from the molecular to the ecosystem level) using in-situ and remote sensing observations from different platforms. Submissions are also encouraged on the development and application of coupled land-ocean-ice models to best capture ecosystem biogeochemical and physical control points, ecological shifts, and seasonal transitions along the continuum of Arctic rivers, coastal lagoons, erosion sites, and the ocean. Benefits of this session will include improved coordination of current monitoring and ecosystem modeling efforts in the coastal Arctic, promoting data sharing, and providing updates on planned field activities over the next decade.
Index Terms:
1630 Impacts of global change [GLOBAL CHANGE]
1640 Remote sensing [GLOBAL CHANGE]
4815 Ecosystems, structure, dynamics, and modeling [OCEANOGRAPHY: BIOLOGICAL]
9315 Arctic region [GEOGRAPHIC LOCATION]
Primary Chair: Maria Tzortziou, CUNY City College of New York, Earth and Atmospheric Sciences, New York, NY, United States
Co-chairs: Atsushi Matsuoka, Universite Laval, Department of Biology, Québec, QC, Canada and Blake Clark, NASA Goddard Space Flight Center & USRA, Greenbelt, MD, United States
Primary Liaison: Maria Tzortziou, CUNY City College of New York, Earth and Atmospheric Sciences, New York, NY, United States
High organic carbon mineralization rates in sediments of the Ryder and Petermann fjords – effects of subglacial meltwater runoff from the northern Greenland icesheet? (635267)
Volker Bruchert1, Jonas Fredriksson2, Adam Ulfsbo3, Christian Stranne4, Johan Nilsson5, Alan C Mix6, Brendan T Reilly7, Larry A Mayer8 and Martin Jakobsson4, (1)Stockholm University, Geological Sciences and Bolin Centre for Climate Research, Stockholm, Sweden, (2)Stockholm University, Geological Sciences, Stockholm, Sweden, (3)University of Gothenburg, Gothenburg, Sweden, (4)Stockholm University, Department of Geological Sciences, Stockholm, Sweden, (5)Stockholm University, Department of meteorology, Stockholm, Sweden, (6)CEOAS, Oregon State University, Corvallis, OR, United States, (7)CEOAS, Corvallis, OR, United States, (8)Univ of New Hampshire, Durham, NH, United States
Radiocarbon and stable carbon isotopes to discern age and migration pathways of methane (CH4) from lakes in the Mackenzie River Delta, Northwest Territories, Canada (643094)
Hadley McIntosh Marcek, University of Maryland (UMCES CBL), Solomons, MD, United States, Ann P McNichol, Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States, Scott Dallimore, Geological Survey of Canada Pacific, Sidney, BC, Canada, Lance Lesack, Simon Fraser University, Burnaby, BC, Canada, Beth Orcutt, Bigelow Laboratory for Ocean Science, East Boothbay, ME, United States, Charles Geoffrey Wheat, NURP/ Univ Alaska, Moss Landing, CA, United States, Jeff Chanton, Florida State University, Tallahassee, FL, United States and Laura Lapham, UMCES, Chesapeake Bio. Lab, Solomons, MD, United States
The radium isotope quartet as tracers of sediment-water interaction and cross-shelf transport in the Chukchi and Beaufort Seas during autumn freeze-up (644277)
Jessica S Dabrowski1, Matthew A Charette2 and Robert S Pickart1, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States
Silicon Cycling in Greenlandic fjords: Comparison of Marine and Land-Terminating Glaciers (645728)
Jade Hatton1, Hong Chin Ng2, Alexander Beaton3, Lorenz Meire4 and Katharine R Hendry2, (1)University of Bristol, Bristol, United Kingdom, (2)University of Bristol, School of Earth Sciences, Bristol, United Kingdom, (3)National Oceanography Centre, Ocean Technology and Engineering Group, Southampton, United Kingdom, (4)Greenland Institute of Natural Resources, Nuuk, Greenland
Variability and degradation of colored dissolved organic matter along the Yukon River-plume-coastal ocean continuum (646261)
Brice Grunert1, Maria Tzortziou1, Alana Menendez2, Patrick Neale3, Peter J Hernes4, Antonio Mannino5 and Robert G Spencer6, (1)CUNY City College of New York, Earth and Atmospheric Sciences, New York, NY, United States, (2)CUNY City College of New York, New York, NY, United States, (3)Smithsonian Environmental Research Center Edgewater, Edgewater, MD, United States, (4)University of California Davis, Davis, CA, United States, (5)NASA Goddard Space Flight Center, Ocean Ecology Laboratory, Greenbelt, United States, (6)Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States
Directly Measuring Physical and Biogeochemical Proxies of the Kuparuk and Sagavanirktok Rivers during the Spring Freshet, in Adjacent Ice-covered Coastal Arctic Waters (646352)
Samuel R Laney, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Stephen R Okkonen, University of Alaska Fairbanks, Institute of Marine Science, Fairbanks, AK, United States, Krista Longnecker, Woods Hole Oceanographic Inst, Woods Hole, MA, United States and Luka Anthony Catipovic, Woods Hole Oceanographic Institution, Department of Applied Ocean Physics & Engineering, Woods Hole, MA, United States
Coastal ocean inorganic carbon cycling is influenced by cycles and seasonal variations in inland waters: a case study from Cambridge Bay (Iqaluktuuttiaq), Nunavut, Canada (646792)
Samantha Jones1, Patrick Duke2, Araleigh Cranch1, Mohamed Mabrouk Mahmoud Ahmed1, Shawn Marriott3, Francis Emingak3 and Brent Else1, (1)University of Calgary, Department of Geography, Calgary, AB, Canada, (2)University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada, (3)University of Calgary, Cambridge Bay, NU, Canada
Linking Organic Carbon Sources with Meiobenthic Abundance and Diversity Across the Coastal Shelf of the Mackenzie Delta (647034)
Rachel Mcmahon, Old Dominion University, Ocean Earth and Atmospheric Sciences, Norfolk, VA, United States, Zaynab Taveras, State University of New York, Environmental Sciences and Forestry Management, Syracuse, NY, United States, Pam Neubert, Stantec Consulting Ltd, Woodshole, MA, United States and H. Rodger Harvey, Old Dominion University, Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States
Delivery of terrigenous nutrients from rivers and coastal erosion sustain up to one third of Arctic Ocean Net Primary Production (652493)
Ronny Lauerwald1,2, Jens Terhaar1,2, Pierre A. G. Regnier3, Nicolas Gruber4 and Laurent Bopp5, (1)Université Libre de Bruxelles, Department of Earth and Environmental Sciences, Brussels, Belgium, (2)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (3)Université Libre de Bruxelles, Brussels, Belgium, (4)ETH Zurich, Environmental Physics, Zurich, Switzerland, (5)Ecole normale supérieure (ENS), Département de Géosciences, Paris, France
Quantifying the fate of organic matter produced during an under-ice bloom using a 1-D Ecosystem model (652704)
Courtney Payne1, Laura Bianucci2, Gert van Dijken1 and Kevin R Arrigo1, (1)Stanford University, Earth System Science, Stanford, CA, United States, (2)Fisheries and Oceans Canada, Institute of Ocean Sciences, Victoria, BC, Canada
Carbon Dynamics and Quality along the Elson Lagoon coastline in Arctic Alaska (652726)
Maria Tzortziou1, Brice Grunert2, Craig E. Tweedie3, Alana Menendez4, Stephen Michael Escarzaga3, Joaquim I Goes5, Peter J Hernes6, Robert G Spencer7 and Antonio Mannino8, (1)CUNY City College, NASA Goddard Space Flight Center, New York, NY, United States, (2)City College of New York, Department of Earth and Atmospheric Sciences, New York, United States, (3)University of Texas at El Paso, El Paso, TX, United States, (4)CUNY City College of New York, New York, NY, United States, (5)Lamont Doherty Earth Obs, Palisades, NY, United States, (6)University of California Davis, Davis, CA, United States, (7)Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States, (8)NASA Goddard Space Flight Center, Ocean Ecology Laboratory, Greenbelt, United States
Biodegradation of Yukon River delta dissolved organic matter is marginally enhanced by nutrient enrichment (652788)
Blake Clark, NASA Goddard Space Flight Center, Ocean Ecology Laboratory, Greenbelt, MD, United States; Universities Space Research Association Greenbelt, Greenbelt, MD, United States and Antonio Mannino, NASA Goddard Space Flight Center, Ocean Ecology Laboratory, Greenbelt, United States
The Physical Ocean Environment as a Predictor of Brine Volume and Sea Ice Biogeochemistry (652963)
Araleigh Cranch1, Brent Else1, Laura A Dalman2, Richard Peter Sims3, Becky Segal4 and Samantha Jones1, (1)University of Calgary, Department of Geography, Calgary, AB, Canada, (2)University of Manitoba, Centre for Earth Observation Science, Winnipeg, MB, Canada, (3)University of Calgary, Geography, Calgary, AB, Canada, (4)University of Victoria, Victoria, BC, Canada
Dissolved Organic Matter in Alaskan Coastal Waters: Dynamics of Riverine Discharge Effects on the Quantity and Quality of CDOM and DOC (655256)
Michael G Novak, NASA Goddard Space Flight Center, Greenbelt, MD, United States, Peter Hernes, University of California - Davis, Davis, CA, United States, Antonio Mannino, NASA Goddard Space Flight Center, Ocean Ecology Laboratory, Greenbelt, United States, Robert G Spencer, Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States and Maria Tzortziou, City College of New York, NY, United States
Arctic Biogeochemical and Optical Properties of Suspended Particles from River Deltas to Coastal Seas (657345)
Antonio Mannino1, Michael Novak1, Scott A Freeman2, Blake Clark3, Peter J Hernes4, Robert G Spencer5, Maria Tzortziou6 and James W McClelland7, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)NASA, (3)NASA Goddard Space Flight Center & USRA, Greenbelt, MD, United States, (4)University of California Davis, Davis, CA, United States, (5)Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States, (6)CUNY City College of New York, Earth and Atmospheric Sciences, New York, NY, United States, (7)University of Texas Marine Science Institute, Port Aransas, TX, United States
