Resumen del producto

The standing crop of Sargassum beds was estimated in the east coast of Baja California Sur in 2006. In addition, the regeneration rate was evaluated in three beds: Califin, Tarabillas, and San Juan de la Costa. In every bed the surface, biomass, and size structure of species were estimated. In total 87 Sargassum beds were located and measured. The total surface calculated was 4 652 480 m² and the standing crop was 21 180 t. The standing crop per zone was of 2 821 t in La Paz bay, 1 964 t from Punta Cabeza de Mechudo to Puerto Escondido, 9 594 t in Concepción bay and 6 801 t from Mulegé to Paralelo 28°. The biomass average was 3 kg m^-2, 6 kg m^-2, 4 kg m^-2 and 9 kg m^-2, respectively. The size range of the species found increased from 9-190 cm in La Paz bay to 132-1900 cm from Mulegé to Paralelo 28°N. As for regeneration, the biomass obtained in Califin and Tarabillas beds in 2007 was higher than the one found in 2006 in both harvested and not harvested areas. In San Juan de la Costa, a lower biomass was determined only in the area that was not harvested previously. Consequently, the biomass reduction in this zone is not attributed to the effect of the harvest. The results of this study prove that in the east coast of Baja California Sur there is a potential of Sargassum algae susceptible of sustainable exploitation.

Palabras clave: Nyctiphanes simplex; Sargassum; standing crop; sustainable exploitation

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