Fig. (5) (a) Average river discharge (m3s-1) recorded at Oliver, British Columbia between May and October of each year. (b) Average (May-October) phytoplankton biomass recorded as mm3m-3 (which approximates µg L-1 wet weight). (c) Average (May-October) zooplankton biomass recorded as µg L-1 dry weight. (d) Average (May-October) Mysis biomass recorded as µg L-1 dry weight.