Algal density in coral nubbins maintained under six environmental treatments and sampled after 48(short term) and 127 hours (long term) after the initiation of the treatments.

All treatments except dark treatments were maintained under natural dark/light cycles. Treatments include: (1) a reference irradiance treatment of 438 µmoles/meter2/second PAR peak natural irradiance using a neutral density filter (low light) at 25°C (reference temperature), (2) low light at 32°C, (3) high light (2007 µmoles/meter2/second PAR peak natural irradiance) at 25°C, (4) high light at 32°C, (5) dark at 25°C, and (6) dark at 32°C. Entries in the table give treatment means ± SE. Treatment values with different letters differed significantly at α = 0.05 using the Tukey's Honestly Signficant Difference test.