Mesozooplankton abundance and Delta Smelt foraging.

<p>Grey is freshwater (mean salinity <0.55 psu), black is brackish habitat (≥0.55 psu), and error bars are ±SE. (A) mesozooplankton abundance by survey (collected concurrently with Delta Smelt), (B) mean weight (mg) of prey items in Delta Smelt stomachs by survey, (C) mean number of prey items by survey in Delta Smelt stomachs, and (D) the number of prey items in Delta Smelt stomachs per mesozooplankton m^-3 by survey. STN is the Summer Townet survey (summer), FMWT is the Fall Midwater Trawl survey (fall/winter), and SKT is the Spring Kodiak Trawl survey (winter/spring).