Fig 1.
Experimental schedule showing plankton inoculation, fish addition, removal and sampling days.
Days enframed with black show the sampling days. Day numbers with negative sign indicate the experimental manipulations before the experiment starts.
Fig 2.
Log10 (zooplankton total biomass) and log10 (zooplankton mean length) for different treatments (no fish, n = 4; fish, n = 6) on each sampling day.
Fish image with arrows indicate addition and removal of fish.
Fig 3.
Total abundance of zooplankton in each enclosure.
E1-8 are fish enclosures and E9-12 are no fish enclosures. Enclosures E5 and E8 were excluded because there was dead fish in E5 because of pump malfunctioning, and enclosure E8 stocked with fish became an extreme outlier in terms of total zooplankton abundance because of a massive rotifer bloom.
Table 1.
Results of linear mixed models to test for differences in zooplankton total biomass, zooplankton mean length, zooplankton:phytoplankton biomass ratio and chla:TP ratio.
Table 2.
Results for contrasts between day 8 and day 43 for each response variable.
Fig 4.
Log10(zooplankton:phytoplankton biomass) and log10(chla:TP) and ratio for different treatments (no fish, n = 4; fish, n = 6) on each sampling day.
Fish image with arrows indicate addition and removal of fish.
Fig 5.
Relative biomass of different zooplankton taxa for different treatments (no fish, n = 4; fish, n = 6) on each sampling day.
Fish image with arrows indicate addition and removal of fish.