Keywords
Thalassia
Cahuita
Costa Rica
reef lagoon
productivity
biomass
How to Cite
Abstract
The basic ecology of seagrass beds was investigated by comparing biomass, productivity and density of Thalassia testudinum (turtle grass) at three sites: Puerto Vargas, Punta Cahuita and Río Perezoso, in Cahuita National Park, Limón, Costa Rica, over a two month period (March-April 1999). Above ground biomass, density, and productivity were highest in the Puerto Vargas site while Punta Cahuita had the least non-green above ground biomass was significantly lower in total biomass than Puerto Vargas. Punta Cahuita was distinguished by the largest grain size, a very hard substrate, and shallower water. Río Perezoso, on the other hand, had extremely fine sediment and lower salinity, while Puerto Vargas was intermediate both in sediment size and environmental conditions. It appears, therefore, that higher biomass and productivity result from a combination of moderate environmental characteristics and an intermediate sediment size.References
CARICOMP. 1994. Methods Manual: Level I. CARICOMP Data Management Center, Center fro Marine Sciences, University of the West Indies, Mona, Kingston, Jamaica.
CARICOMP. 1997a. Caribbean Coastal Marine Productivity (CARICOMP): A research and monitoring network of marine laboratories, parks, and reserves. Proc. 8th Int. Coral Reef Symp., Panamá 1: 641-646.
CARICOMP. 1997b. Variation in ecological parameters of Thalassia testudinum across the CARICOMP network. Proc. 8th Int. Coral Reef Symp., Panamá 1: 663-668.
Cortés, J. & M.J. Risk. 1985. A reef under siltation stress: Cahuita, Costa Rica. Bull. Mar. Sci. 36: 339-356.
Dawes, C.J. 1998. Biomass and photosynthetic responses to irradiance by a shallow and a deep water population of Thalassia testudinum on the west coast of Florida. Bull. Mar. Sci. 62: 89-96.
Fong, P. & M.A. Harwell. 1994. Modeling seagrass communities in tropical and subtropical bays and estuaries: A mathematical model synthesis of current hypotheses. Bull. Mar. Sci. 54: 757-780.
Littler, D.S., M.M. Littler, K.E. Bucher & J.N. Norris. 1989. Marine Plants of the Caribbean. A Field Guide from Florida to Brazil. Smithsonian Institution Press, Washington D.C. 263 p.
Tomasko, D.A. & B.E. Lapointe. 1991. Productivity and biomass of Thalassia testudinum as related to water column nutrient availability and epiphyte levels: observations and experimental studies. Mar. Ecol. Prog. Ser. 75: 9-17.
Tussenbroek, B.I. van 1994. Spatial and seasonal variability in biomass and leaf morphology of the manatee grass, Syringodium filiforme in a tropical coral reef lagoon, Mexico. Anal. Inst. Cienc. Mar Limnol., UNAM 21: 15-22.
Tussenbroek, B.I. van 1995. Thalassia testudinum leaf dynamics in a Mexican Caribbean coral reef lagoon. Mar. Biol. 122: 33-40.
Tussenbroek, B.I. van, et al. 1996. Biomass and growth of the turtle grass Thalassia testudinum (Banks ex König) in a shallow tropical lagoon system, in relation to tourist development. Carib. J. Sci. 32: 357- 364.
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