Figure 4

Microphytobenthos RLC parameters under control and elevated CO ₂ and temperature. Changes in relative maximum electron transport rate (rETR _max, A), light utilization coefficient (α, B) and light saturation parameter (E _k, C) (mean ± standard error, n = 4) of an intertidal sediment after 0, 6 and 11 days under different temperatures and pH. T 18°C, pH 8.0: Temperature = 18°C, pH = 8.0; T 24°C, pH 8.0.Temperature = 24°C, pH = 8.0; T 18°C, pH 7.4.Temperature = 18°C, pH = 7.4; T 24°C, pH 7.4: Temperature = 24°C, pH = 7.4.