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Table 1 Classification of habitat types according to live zebra mussel biomass and dry weight of shell deposits

From: Habitat engineering by the invasive zebra mussel Dreissena polymorpha (Pallas) in a boreal coastal lagoon: impact on biodiversity

Shell deposits (DWg/m2)

Zebra mussel biomass (WWg/m2)

0–200

>200

0–1,000

Bare sediments

Zebra mussel bed

>1,000

Shell deposits