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Article
Photoadaptive Response During the Development of a Coastal Antarctic Diatom Bloom and Relationship to Water Column Stability
Limnology and Oceanography
  • Mark A. Moline, California Polytechnic State University - San Luis Obispo
Publication Date
1-1-1998
Abstract
The ratio of the xanthophyll pigments diadinoxanthin and diatoxanthin to chlorophyll a [(DD + DT): Chl a] was used as a photoadaptive index during the development of a large Antarctic diatom bloom. This index was found to track fluctuations in the incident solar irradiance and the in situ light field over a 3-order-magnitude change in the water column biomass. Depth profiles of the (DD + DT): Chl a ratio showed that the upper mixed layer, assessed by physical data, was in fact stable over the course of the month. Diel experiments conducted over the same period showed a delayed (5-8 h) response of the DD + DT pool to the instantaneous Qpar (400-700 nm) irradiance. These time-series results illustrate the potential use of xanthophyll pigments in assessing phytoplankton light histories and the degree of water column stability.
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Publisher statement
Journal homepage: http://www.aslo.org/lo.
Citation Information
Mark A. Moline. "Photoadaptive Response During the Development of a Coastal Antarctic Diatom Bloom and Relationship to Water Column Stability" Limnology and Oceanography Vol. 43 Iss. 1 (1998) p. 146 - 153
Available at: http://works.bepress.com/mmoline/16/