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Krill Aggregation (Biotic Group)

Component: Biotic

Unique Identifier: 441

Biotic Setting Planktonic Biota
Biotic Group Zooplankton
Biotic Subclass Crustacean Holoplankton
Biotic Group Krill Aggregation
Biotic Community Euphausia Aggregation
Thysanoessa Aggregation

Definition Water parcels in which shrimp-like krill constitute the dominant form of zooplankton. Most krill species are filter feeders, with a preference for diatoms. Biomass per square meter can be very high in krill aggregations, and they are a critical food source for many large consumers.