Light had a significant effect on dark respiration and LEDR standardised to Chlorophylls a and c2 (Figure 2 d), but not per cell or per cm2 (Table 2). High light increased the rate of both respiration and net photosynthesis per µg Chlorophyll a or Chlorophyll c2. CO2 and temperature had a significant interactive effect on dark respiration standardised to µg Chlorophyll a (p=0.0484), and on dark respiration (p=0.0034) and LEDR (p=0.0058) standardised to µg Chlorophyll c2 (Figure 2e).