Figure 2.

Environmental conditions before, during, and after measurements were made (shaded regions) of reef flat community metabolism at Lizard Island. (A) Rainfall on Lizard Island between January 1, 1996, and April 1, 1996 (15). (B) Measured seawater surface temperatures and salinities in the lagoon located between Lizard Island, South Island, and Palfrey Island (see Fig. 1) between June 1, 1993 and June 1, 1996 (16); values shown during the experimental period were obtained on March 18, 1996, 4 days after measurements began and 3 days before measurements were completed. A salinity of 32‰ was recorded on March 13, 1996 (11).