Silver and zinc accumulation or depuration in
parts per million dry weight (ppm) in three transplanted
bivalve species for ten sampling periods from 1993ยจ1997.
Initial (T-0) concentrations are subtracted from
tissue concentrations after retrieval to give concentrations
accumulated or depurated (negative value) during
deployment in the Estuary. Bars indicate the range
of values of all stations where species were deployed.
Note different y-axis scales.