Volume 55

Comunidades Inter-mareales de la Costa Rocosa de la Reserva de la Biosfera de Sian Ka’an


Authors
Torruco, D.; González, M.A.
Download PDF Open PDF in Browser

Other Information


Date: 2004


Pages: 642-653


Event: Proceedings of the Fifty Fifth Annual Gulf and Caribbean Fisheries Institute


City: Xel Ha


Country: Mexico

Abstract

Considering that the prediction of the especies distribution is important element in the biological conservation and in the especies management, we were carried out an investigation of field of the intertidal communities in two sites with different wave exposition in the Sian Ka'an RB, Osho Oasis and Boca Paila. The samplings were carried out based on three transectos by each site with a biannual periodicity collecting the organisms bounded to a square of 900 cm2. Any significant tempormy difference was not presented (p=0.05). The results show that the main component of these cornmunities was as much in biomass as in abundance, the gasterópodos and the macroalgas in the middle intertidal areas. The space tendencies show an almost exclusive distribution of mollusks in the low intertidal areas. Some significant negative correlations are shown among sites detected among the density of some functional groups and among some environmental parameters. The density variation of the most abundant functional groups with each tide level was in most cases abrupt, what could indicate a change in the environmental or biological micro-conditions, although any pattem of evident zonación doesn't exist. The changes under the environmental conditions can be the main cause of landscape heterogeneity to middle (dozens of meters) and small scale (centimeters to meters). The patterns of similarity distribution of assemblings in the sites were not significantly different among the sectors of each one. The present work would serve as the beginning toward investigations of the consistency of space patterns in different hierargical scales.

PDF Preview