Interacting effects of CO2 partial pressure and temperature on photosynthesis and calcification in a scleractinian coral, 2003, supplement to: Reynaud, Stéphanie; Leclercq, Nicolas; Romaine-Lioud, Samantha; Ferrier-Pagès, Christine; Jaubert, Jean; Gattuso, Jean-Pierre (2003): Interacting effects of CO2 partial pressure and temperature on photosynthesis and calcification in a scleractinian coral. Global Change Biology, 9(11), 1660-1668


We show here that CO2 partial pressure (pCO2) and temperature significantly interact on coral physiology. The effects of increased pCO2 and temperature on photosynthesis, respiration and calcification rates were investigated in the scleractinian coral Stylophora pistillata. Cuttings were exposed to temperatures of 25°C or 28°C and to pCO2 values of ca. 460 or 760 muatm for 5 weeks. The contents of chlorophyll c2 and protein remained constant throughout the experiment, while the chlorophyll a content was significantly affected by temperature, and was higher under the 'high-temperature-high-pCO2' condition. The cell-specific density was higher at 'high pCO2' than at 'normal pCO2' (1.7 vs. 1.4). The net photosynthesis normalized per unit protein was affected by both temperature and pCO2, whereas respiration was not affected by the treatments. Calcification decreased by 50% when temperature and pCO2 were both elevated. Calcification under normal temperature did not change in response to an increased pCO2. This is not in agreement with numerous published papers that describe a negative relationship between marine calcification and CO2. The confounding effect of temperature has the potential to explain a large portion of the variability of the relationship between calcification and pCO2 reported in the literature, and warrants a re-evaluation of the projected decrease of marine calcification by the year 2100.

Related Identifier
Metadata Access
Creator Reynaud, Stéphanie; Leclercq, Nicolas; Ferrier-Pagès, Christine; Romaine-Lioud, Samantha; Jaubert, Jean; Gattuso, Jean-Pierre
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2003
Funding Reference Seventh Framework Programme, 211384; Sixth Framework Programme, 511106
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Language English
Resource Type Supplementary Collection of Datasets; Collection
Format application/zip
Size 2 datasets
Discipline Earth System Research
Temporal Coverage Begin 1999-02-10T00:00:00Z
Temporal Coverage End 1999-03-10T00:00:00Z