| Abstract: | The chlorophyll a:b ratios measured in several species of Caulerpa and in Bryopsia plumosa (Hudson) C. Ag. gave values close to 2.00 or below. Values obtained for Ulva lactuca L. taken from the same site gave a higher value of 2.44, and the sea-grass Heterozostera tasmanica (Martens ex Aschers) den Hartog a value of 2.98. Although there were changes in a:b ratios observed when Caulerpa plants were, stored for up to 10 days in dim light, the values did not suggest that chlorophyll a:b ratios were directly controlled by light intensity. It is conducted that the a:b ratios described in this paper, are a characteristic of the species themselves and are not a result of their growth in extremely shaded situations. |
