HE52B:
Variability in Southern Ocean Productivity over Different Timescales II
HE52B:
Variability in Southern Ocean Productivity over Different Timescales II
Variability in Southern Ocean Productivity over Different Timescales II
Session ID#: 11382
Session Description:
Southern Ocean productivity plays an important role in regulating marine resources, ocean biogeochemistry and the global carbon cycle. Canonically, variations in iron supply and demand are thought to regulate the variations in phytoplankton productivity. However, via the actions of ocean physics, the Southern Ocean also encounters substantial fluctuations across space and time in temperature, sea ice and glacial ice dynamics and the availability of light and/or macro- and micro-nutrients. How these regulatory factors act individually and in combination to shape the dynamics of biological activity across food webs in different Southern Ocean regions and different timescales is not well understood. This hampers our ability to project with confidence how future environmental change will affect this important ecosystem. In particular we lack an understanding of how variations in the physical and/or biogeochemical environment are underpinned and connected to the broader picture of ecosystem structure, as well as wider biogeochemical feedbacks. We invite presentations from field, laboratory, remote sensing, modelling and paleo studies that seek to unravel the dynamics of the Southern Ocean marine ecosystem from a seasonal or decadal or millenial scale viewpoint. Efforts to combine insights across disciplines and scales from physics to biogeochemistry to ecosystems are actively encouraged.
Primary Chair: Alessandro Tagliabue, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom
Chairs: Philip W Boyd, IMAS, ACE-CRC, University of Tasmania, Hobart, Australia, Eugene W Domack, University of South Florida St. Petersburg, College of Marine Science, St Petersburg, FL, United States, Amy Leventer, Colgate University, Geology, Hamilton, NY, United States and Alessandro Tagliabue, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom
Moderators: Alessandro Tagliabue, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom, Philip W Boyd, IMAS, ACE-CRC, University of Tasmania, Hobart, Australia, Eugene W Domack, University of South Florida St. Petersburg, College of Marine Science, St Petersburg, FL, United States and Amy Leventer, Colgate University, Geology, Hamilton, NY, United States
Student Paper Review Liaison: Amy Leventer, Colgate University, Geology, Hamilton, NY, United States
Index Terms:
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4817 Food webs, structure, and dynamics [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4875 Trace elements [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
- B - Biogeochemistry and Nutrients
- CT - Chemical Tracers, DOM and Trace Metals
- ME - Marine Ecosystems
- PP - Phytoplankton and Primary Production
Abstracts Submitted to this Session:
Detailed Spatial Analysis of Trends in Primary Productivity in the Ross Sea, Antarctica (1997-2013) (93866)
A Glacial Isostatic Model for Early- mid Holocene Iron Fertilization of Antarctic Peninsula Shelf Waters (92549)
Environmental factors controlling phytoplankton productivity and phenology in the Southern Ocean (87872)
Connectivity Between Surface and Subsurface Phytoplankton Blooms from High-Resolution Ocean Glider Transects in Southern Drake Passage (90258)
An Integrative Approach to Understand a Rich Ecosystem in the Southern Ocean From Carbon to Top Predators (88377)
See more of: High Latitude Environments