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Mobile Mollusks on Soft Sediments (Biotic Group)

Component: Biotic

Unique Identifier: 1222

Biotic Setting Benthic/Attached Biota
Biotic Class Faunal Bed
Biotic Subclass Soft Sediment Fauna
Biotic Group Mobile Mollusks on Soft Sediments
Biotic Community Nassariid Bed
Olivella Bed
Polinices Bed
Turritellid Bed
Scaphopod Bed


Description
Definition Areas dominated by epifaunal, slow-moving, generally detritivorous, herbivorous, or omnivorous gastropods, scaphopods, or other mollusks foraging at the surface of unconsolidated sediments. These animals may be partly buried in the substrate. Predatory mobile mollusks such as moon snails, octopods, or whelks are generally preying on another Biotic Group (e.g., Clam Bed) which (as the forage base) would normally constitute the dominant percent cover. In those cases, Mobile Mollusks would be described as a Co-occurring Element, e.g., "Biotic Group: Spisula Bed with Co-occurring Element: Polinices Bed".