Organic chelators: Factors affecting primary production in the cromwell current upwelling
Water upwelling out of the subsurface Cromwell Current at the equator in the eastern Pacific Ocean was found to be high in inorganic nutrients, relatively low in dissolved organic carbon, and supported less phytoplankton growth than water to the north or south. One degree north and south of the equa...
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Veröffentlicht in: | Journal of experimental marine biology and ecology 1969, Vol.3 (2), p.191-199 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Water upwelling out of the subsurface Cromwell Current at the equator in the eastern Pacific Ocean was found to be high in inorganic nutrients, relatively low in dissolved organic carbon, and supported less phytoplankton growth than water to the north or south. One degree north and south of the equator the dissolved organic carbon concentrations were higher and phytoplankton growth was increased. Enrichment experiments showed that only the addition of a strong chelator or an undefined Zooplankton extract could improve phytoplankton growth in the nutrient-rich, newly upwelled water. We suggest that natural organic chelators, released by organisms as the water ages at the surface, may be partly responsible for the increased phytoplankton growth north and south of the equator. |
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ISSN: | 0022-0981 1879-1697 |
DOI: | 10.1016/0022-0981(69)90017-3 |