عنوان مقاله [English]
This study carried out in Chabahar Zone in Sistan and Baluchistan province monthly from April 2005 to March 2006 about one year. At first, based on tide tables the maximum of tide in month was signified. Then Seaweed growth area in intertidal zones determind by measuring and recording of geographical position by meter and GPS (Gegraphical Position Sistem) and with the help of GIS (Gegraphical Information Systems) and Satellite maps. In this area, 15 transects with equal distance were obtaind and monthly sampling was done randomly by quaderate 50×50 cm. The samples were transfered to the lab and the weight of species was measuerd after cleaning and separating. The biomass of each was obtained per area unit and in the total area after determing the average weight of them. Also, the seaweed species were reconized according to the present references. During this research, 3 species Medical Brown algae were recognized, including: Padina australis, Sargassum ilicifolium and Spatoglosum. Total biomass in the area of Chabahar Coasts was 296111.2 Kg. and monthly average was obtained 24675.9 Kg. The maximum biomass (30%) was obtained in March which was 61784.7Kg (342 g/m2) and minimum biomass (5.7%) was obtained in September which was 11706.6 kg (64.8 g/m2). Maximum species biomass was for Padina australis (79.8%) and minimum species biomass was for Spatoglosum asperum (0.2 %).