The Study on macrobenthoses community to estimate the production potential in Gorgan Bay

Present study carried out between 20 Apr. and 22 Feb. 2016 in 19 sampling sites in order to investigate the productivity, and natural dominant living conditions With emphasis on macrobenthoses in the Gorgan Bay. According to the provided maps from the shoreline, depth, and sediment, the total area and volume of Gorgan Bay is 466 square meters and 905.33 million cubic meters respectively. As a result, the study of Gorgan Bay infested communities (macrobenthes) was identified as the 3 phyla (Annelidae, Mollusca and Arthropoda) and 6 classes (Crustacea, Insecta, Bivalvia, Oligochaeta, Gastropoda and Polychaeta) and 12 orders and 12 families. , The Annelidae phylum had the maximum, minimum and mean biomass of 2.35 in April, 0.01 in February and 0.69±.63 gr/m2 , respectively. The Arthropoda phyla had maximum, minimum and mean biomass of 0.07 In March, March 23rd, April 23rd and 2.11±1.24 gr/ m2 , the Mollusca phylahad a maximum, minimum and average biomass of 31.62 in December, 14.10 in June and 22.81±6.09 gr/m2 Was determined. The most abundance was 130 kg/ha in july.and the most Production capacity was 3.59 kg/ha.