Vertex: Phytoplankton/iron studies in the Gulf of Alaska

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Martin, J. H., Gordon, R. M., Fitzwater, S., & Broenkow, W. W. (1989). Vertex: Phytoplankton/iron studies in the Gulf of Alaska. Deep Sea Research Part A, Oceanographic Research Papers, 36(5), 649-680.
Metadata
TitleVertex: Phytoplankton/iron studies in the Gulf of Alaska
AuthorsH. Martin, M. Gordon, S. Fitzwater, W. Broenkow
AbstractVERTEX studies were performed in the Gulf of Alaska in order to test the hypothesis that iron deficiency was responsible for the phytoplankton's failure to remove major plant nutrients from these waters. In view of the observed Fe distributions and the results of phytoplankton Fe enrichment experiments, it was concluded that Gulf of Alaska atmospheric Fe input rates are sufficient to support moderately high rates of primary productivity; however, not enough Fe is available to support the high growth rates that would lead to normal major nutrient depletion. Enhanced Fe input does occur along the Alaska continental margin, where normal NO 3 surface depletion is observed. Coccolithophorids appear to be best able to cope with low Fe conditions; however, they cannot compete with diatoms when Fe is readily available. Iron may be more important than available N in determining global rates of phytoplankton new production. Offshore Pacific Ocean water, replete with major nutrients, appears to be infertile without supplemental iron from the atmosphere or continental margin. © 1989.
JournalDeep Sea Research Part A, Oceanographic Research Papers
Date1989
Volume36
Issue5
Start page649
End page680
ISSN01980149
Subjectscoccolithophorid, iron, phytoplankton, primary productivion, Gulf of Alaska
NoteCited By (since 1996):399

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