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Surface Film (Biogeochemical Feature)

Component: Biogeochemical Feature

Unique Identifier: 1351

Biogeochemical Feature Surface Film

Definition Thin layer of materials and biota that exist on the surface of the water, often only a few microns thick. The surface film can contain a rich microbial community that consumes the material that concentrated in the film. Dissolved Organic Carbon (DOC) is concentrated up to five times in the surface microlayer. These films are often aggregated and concentrated at frontal convergences of two water masses and can lead to formation of a rich community that feeds on the material.