Investigating some of the fishery indicators from landing data in the northern waters of the Oman Sea (Sistan and Baluchestan Province)

Document Type : Scientific extension

Author

Offshore Fisheries Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Chabahar, Iran

Abstract

The fishery has direct and indirect effects on the aquatic resources and the entire ecosystem, and the structure and functioning of the food networks will change the ecosystems of the sea. The average (± standard deviation) of total catch during the 21 years of the study period was 70852 ± 131819 t with a 95% confidence level of 161,2122 t and 101515 t, with a significant increase in the trend (P 0.05 and R = 0.12). The increase in total fishing and the fishing in balance index, as well as the decrease of the trophic level index and the beginning of a reduction in the level of fishing for mollusks and cartilage fish in this province, can indicate the severe changes in the structure of aquatic species in this area. According to the above results, it can be said that in the current situation, the catch is out of optimal condition and it is recommended to reduce the exploitation or at least not increase exploitation.

Keywords


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