..., with an interaction where flow had less influence on respiration at low temperatures, and a much larger effect at high temperatures. Model analysis suggested that respiration is mass transfer limited under conditions of low velocity (<7.5 cm −1 ) and high temperature (20–25°C). In contrast, limitation by uptake...

... >1.8±0.9 cm s –1 at the upstream location, but O 2 flux continued to increase with velocity at the downstream location( Fig. 2B ). This linear relationship suggests that photosynthesis is mass transfer limited at the downstream location. However, O 2 flux did not vary spatially at the high CO 2...