Role of marine biology in glacial-interglacial CO cycles

Kohfeld, K.E., Le Quéré, C. ORCID: https://orcid.org/0000-0003-2319-0452, Harrison, S.P. and Anderson, R.F. (2005) Role of marine biology in glacial-interglacial CO cycles. Science, 308 (5718). pp. 74-78. ISSN 0036-8075

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Abstract

It has been hypothesized that changes in the marine biological pump caused a major portion of the glacial reduction of atmospheric carbon dioxide by 80 to 100 parts per million through increased iron fertilization of marine plankton, increased ocean nutrient content or utilization, or shifts in dominant plankton types. We analyze sedimentary records of marine productivity at the peak and the middle of the last glacial cycle and show that neither changes in nutrient utilization in the Southern Ocean nor shifts in plankton dominance explain the CO drawdown. Iron fertilization and associated mechanisms can be responsible for no more than half the observed drawdown.

Item Type: Article
Uncontrolled Keywords: sdg 14 - life below water ,/dk/atira/pure/sustainabledevelopmentgoals/life_below_water
Faculty \ School: Faculty of Arts and Humanities > School of History

Faculty of Medicine and Health Sciences > Norwich Medical School
University of East Anglia > Faculty of Science > Research Centres > Tyndall Centre for Climate Change Research
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Depositing User: Pure Connector
Date Deposited: 03 Feb 2014 11:26
Last Modified: 19 Sep 2022 04:57
URI: https://ueaeprints.uea.ac.uk/id/eprint/47468
DOI: 10.1126/science.1105375

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