Biomass variations due to oyster tables in the Eastern MOB mudflat. The macrofaunal biomass is reduced under oyster
tables. The contributions of bivalves, gastropods, annelids and arthropods (given in parentheses) vary under the tables to the
benefit of annelids and arthropods at the expense of the bivalves (Sauriau et al. 1989). The meiofaunal biomass is enhanced under
oyster tables (Castel et al. 1989). The third column gives the weighted average: (1 – % area in culture) × biomass outside oyster
tables + % area in culture × biomass under oyster tables. These data were used to calculate the biomasses under oyster tables
from the knowledge of the biomasses outside them