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Mobile Crustaceans on Soft Sediments (Biotic Group)

Component: Biotic

Unique Identifier: 526

Biotic Setting Benthic/Attached Biota
Biotic Class Faunal Bed
Biotic Subclass Soft Sediment Fauna
Biotic Group Mobile Crustaceans on Soft Sediments
Biotic Community Caprellid Bed
Pagurus Bed
Haustoriid Bed
Emerita Bed
Mysid Bed


Description
Definition Areas where the epifaunal or surface community is dominated by slow-moving crustaceans. This group is limited to the relatively non-motile, epifaunal, crustacean taxa (e.g., hermit crabs, mole crabs, amphipods, mysids, isopods) and does not include the more mobile arthropod forms (e.g., swimming crabs, horseshoe crabs, penaied shrimps) which can leave the classified area in less than one day and are defined as Associated Taxa. Larger mobile crustacean forms that construct a semi-permanent home (lobsters, burrowing shrimps, etc.) are classified as Tunneling Megafauna. Small burrowing crustaceans with a body measuring < 2 mm in the smallest dimension are classified as Small Surface-Burrowing Fauna.