Mean effective quantum yield (Y (II)) of rapid light response curves (RLCs) of <i>U. prolifera</i> and <i>U. intestinalis</i>, obtained from short-term (24 h) culture to each, measured under different culture treatments: <i>pre-bloom</i>, <i>bloom</i>,and <i>post-bloom</i>.

<p>Values are means ± SD (n = 5). Different letters above bars indicate significantly different values (post-hoc, <i>P</i><0.05).