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Iron availability, nitrate uptake, and exportable new production in the subarctic PacificThis paper presents a critique of experimental data and papers by Martin et al. (1989, 1990), who suggested that the phytoplankton growth is iron-limited and that, small additions of iron to large subarctic ocean areas might be a way of removing significant amounts of atmospheric CO2 by increasing phytoplancton growth. Data are presented to show that, in the summer of 1987, the phytoplankton assemblage as a whole was not iron limited, as measured by the bulk removal of nitrate or by the increase of chlorophyll. It is suggested that grazing normally prevents the phytoplankton from reaching concentrations that reduce the iron (and nitrate) to levels that depress division rates drastically.
Document ID
19910038093
Document Type
Reprint (Version printed in journal)
Authors
Banse, Karl (Washington, University Seattle, United States)
Date Acquired
August 15, 2013
Publication Date
January 15, 1991
Publication Information
Publication: Journal of Geophysical Research
Volume: 96
ISSN: 0148-0227
Subject Category
OCEANOGRAPHY
Funding Number(s)
CONTRACT_GRANT: NAGW-1007
Distribution Limits
Public
Copyright
Other