Fig 1.
Time course of phytoplankton biovolumes.
Open circles: warm mesocosms; grey and filled diamonds: cold mesocosms; open diamonds: mesocosms 9.
Fig 2.
Means of total phytoplankton biomass.
Means over entire experiment calculated after loge-transformation and standard deviations (vertical lines). Mesocosm is 9 shown by an open symbol. Treatment codes: WL: warm, low CO2, WH: warm, high CO2, CL: cold, low CO2, CH: cold, high CO2; codes for homogenous groups according to Tukey’s HSD: a, b.
Fig 3.
Time course of the biovolumes of dominant higher taxa.
Diatoms (olive), cryptophytes (red), and prymnesiophytes (brown), the trajectories from the aberrant mesocosm 9 are shown by dotted lines.
Table 1.
Relative biomass of higher taxa and species.
Fig 4.
Relative biomass of selected species.
Relative biomass (mean over entire duration of experiment) of the two most abundant species (Skeletonema marinoi, Teleaulax acuta) and of the most abundant species responsive to temperature (Chrysochromulina sp.) and the most abundant species responsive to CO2-enrichment (Proboscia alata). Treatment codes: WL: warm, low CO2, WH: warm, high CO2, CL: cold, low CO2, CH: cold, high CO2; codes for homogenous groups according to Tukey’s HSD: a, b.
Fig 5.
Response of community mean cell size (calculated from mean total biovolumes divided by mean cell numbers for each mesocosm) to the experimental treatments, mesocosm 9 shown by an open symbol. Treatment codes: WL: warm, low CO2, WH: warm, high CO2, CL: cold, low CO2, CH: cold, high CO2; codes for homogenous groups according to Tukey’s HSD: a, b.
Fig 6.
Cells size of selected species.
Size response of 4 selected phytoplankton species to the experimental treatments, means and standard deviations (vertical lines) based on measurements of 20 cells per mesocosms. Mesocosm 9 shown by an open symbol. Treatment codes: WL: warm, low CO2, WH: warm, high CO2, CL: cold, low CO2, CH: cold, high CO2.
Table 2.
Cell size.