However, the growth performance among species was significantly different. The mean daily growth rate and mean productivity of U. fasciata and G. birdiae (4.5 ± 2.5% day-1; 3.5 ± 1.9 g m-2 day-1) were superior to those obtained for U. flexuosa (-13.6 ± 7.7% day-1; -6.24 ± 2.8 g m-2 day-1; P