Note
Three tropical seagrass species were planted into 1.5 m2 culture tanks and grown under the same conditions for 2 years. New shoot production and vegetation growth of both Syringodium filiforme Kütz. and Halodule wrightii Aschers. resulted in complete cover in monoculture tanks within the first year. The vegetative spread of Thalassia testudinum Banks ex König was slower than that of the other species. The culture of seagrasses in open mesocosm systems was most successful when continuous current circulation was maintained, water column nutrients were kept low, and extreme high temperatures (> 36°C) were avoided. Seagrass colonized and grew equally well in Indian River mud substratum and in quartz sand.