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Diatom Aggregation (Biotic Group)

Component: Biotic

Unique Identifier: 483

Biotic Setting Planktonic Biota
Biotic Class Phytoplankton
Biotic Subclass Diatom Phytoplankton
Biotic Group Diatom Aggregation
Biotic Community Thalassiosira Aggregation

Definition Waters dominated by diatoms that aggregate passively during blooms or via exudation of sticky polymers that act as glue to bind cells together. (Bacteria may play an important role in the binding process.) Diatom aggregations play an important role in the marine carbon budget, and since aggregations sink more rapidly than single cells, they transport carbon to lower waters and the benthos.