Ellwood Michael

Tracing the iron cycle in the Southern Ocean

Project Number: 15
Project Type: Research_Project
Project Duration: 01/01/2016 - 12/31/2018
Funding Source: EPFL, SPI ,
Project Leader: Dr. Michael Ellwood
Research School of Earth Sciences
Australian National University
Bldg 47, Daley Raod
Canberra, ACT 0200
Australia
Phone: +61 (0)2 6125 8322
e-Mail: michael.ellwood(at)anu.edu.au
http://www.ems.anu.edu.au/

related to this project.


Research Areas:
Arctic
Antarctic
High Altitude

Keywords:
Iron, limitation, Chromium, Trace elements, Isotopic signature

Abstract:
Incubation and mesoscale enrichment experiments have demonstrated that iron is a key micronutrient limiting the growth of phytoplankton in Southern Ocean waters and through this influence the Southern Ocean’s role in mediating atmospheric carbon dioxide. It is the bioavailable iron pool that shapes phytoplankton communities and growth in iron-limited regions. In this project we will focus on iron and how it cycles in Southern Ocean waters to elucidate its influence in regulating algal production and carbon export. We will use an array of field observations (biology, chemistry, stable isotopes), coupled to a shipboard and laboratory-based experimental approach to investigate the major factors that control Southern Ocean biogeochemistry. Our goal is to arrive at a mechanistic understanding of both photic zones processes in the Southern Ocean itself, as well as the bio- and isotope geochemistry of water masses exported from there in the global ocean circulation.


Last update: 4/28/17
Source of data: ProClim- Research InfoSystem (1993-2018)
Update the data of project: CH-6034

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