Fig. 6. Riftia pachyptila (A) CO₂, (B) H₂S and (C) O₂ uptake rates (µmol g^-1 h^-1) as a function of temperature (°C). The above data represent the results of two separate experiments (5 to 20°C experiment during the HOT 96 expedition, and a 20 to 35°C experiment during the HOT 98 experiment; Data from the HOT 96 expedition are in boldface). Values are means ± s.e.m. (N=4). During these experiments, pH was maintained at 6.0 and all other substrates were held at `typical' concentrations (see Materials and methods).