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Particle aggregation during a diatom bloom. 2. Biological aspects
Riebesell, U. (1991). Particle aggregation during a diatom bloom. 2. Biological aspects. Mar. Ecol. Prog. Ser. 69(3): 281-291
In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630, more
Peer reviewed article  

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Keywords
    Algal blooms; Ecological succession; Flocculation; Phytoplankton; Suspended particulate matter; Bacillariophyceae [WoRMS]; ANE, North Sea [Marine Regions]; Marine

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  • Riebesell, U.

Abstract
    For a 6 wk period covering the time before, during, and after the phytoplankton spring bloom, macroscopic aggregates ( greater than or equal to 0.5 mm diameter) were repeatedly collected and water column properties simultaneously measured at a fixed station in the southern North Sea. Distinct changes in aggregate structure and composition were observed during the study. Predominantly detrital aggregates during the early phase of the study were followed by diatom-dominated algal flocs around the peak of the bloom. Mucus-rich aggregates containing both algal and detrital components and with large numbers of attached bacteria dominated the post-bloom interval. The phytoplankton succession within the aggregates closely reflected the succession in the water column with a time delay of a few days. Algal flocculation occurred as a successional aggregation of selected diatom species.

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