Silicate limitation in a filament.

von Bröckel, Klaus, Sellmer, Claudia and Kriest, Iris (2000) Silicate limitation in a filament. Open Access [Poster] In: Biogeochemical Cycles: German contribution to International JGOFS. , 18.-21.09.2000, Bremen, Germany . Berichte aus dem Fachbereich Geowissenschaften der Universität Bremen. ; pp. 32-33 .

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We observed variations in primary nutrients and phytoplankton biomass in an upwelling event off
Oman during the strong SW-monsoon 1997. A so called filament, originating in the coastal
upwelling, was tracked, marked with a drifter and followed for 19 days while intensive water
sampling took place. The first stations in this upwelling event showed a severe silicate limitation.
With the silicate limitation a diverse diatom community vanished. Although after a couple of
days new silicate became available, another phytoplankton community of smaller organisms
< 20 flm) with nearly no diatoms bloomed. These results raise fundamental questions about the
interactions between silicate limitation and the control of carbon export in the worlds most
productive areas. It is discussed, whether these limitation events might be typical short term
features of coastal upwelling ecosystems, not described as yet.

Document Type: Conference or Workshop Item (Poster)
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BI Biological Oceanography
Refereed: Yes
Date Deposited: 18 Feb 2008 17:24
Last Modified: 11 Sep 2019 12:24

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