Figure 6

Posidonia primary productionr. Net primary production (in g dry weight shoot^-1 yr^-1) of Posidonia oceanica dedicated to rhizomes, sheaths and blades, according to the level of interaction with Caulerpa taxifolia. The method of estimation (see [21] Pergent and Pergent-Martini, 1991) does not allow calculation of a confidence interval.