𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Effects of carbon dioxide concentration on coral photosynthesis

✍ Scribed by J. E. Burris; J. W. Porter; W. A. Laing

Publisher
Springer-Verlag
Year
1983
Tongue
English
Weight
387 KB
Volume
75
Category
Article
ISSN
0025-3162

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✦ Synopsis

The effects of inorganic carbon concentrations on photosynthetic oxygen evolution of isolated zooxanthellae and coral tips from the hermatypic coral Seriatopora hystrix were measured in the laboratory using an oxygen electrode. Whole coral colonies of Stylophora pistillata were examined in situ, using a bioassay respirometer. Inorganic carbon concentrations above 2.3 raM, the ambient concentration of reef water, generally did not stimulate photosynthesis. These results indicate that inorganic carbon is not limiting to coral photosynthesis and that respiratory carbon dioxide production by the coral host probably has little effect on the photosynthetic rates of its symbiotic zooxanthellae.

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