Effect of salinity and temperature changes from brine discharged of desalination plant on Polychaeta assemblage in Chabahar Bay

Desalination technology is growing due to population growth and water shortage. These kinds of activates can have environmental impacts where brine discharges into the sea. This study examined the effects of brine discharge from desalination plant Chabahar-Konarak on the sea environment were used to study polychata assemblage. Sediment samples were sampled from 7 stations in pre monsoon and post monsoon in year 2011 using by van veen grab (0/025m^2) samplers that 5 stations were around the discharge point and 2 station as controls. The results of the statistical analysis showed that the abundance and richness significances differences (P<0/05) between stations. The most abundance of polychaetes was occurred in station 6 with 3666.62 and 2079.92 individuals per m^2 in pre and post monsoon respectively. While the lowest values observed in station1 in pre and post monsoon periods with 306.97 and 0 numbers in m^2 .The richness, diversity and evenness results indicated that the highest and the lowest values is observed in control stations 0.94, 1.07 and 0/67 in pre monsoon and station 1, zero in post monsoon. According to results, we observed different sensitivity of polychaete to brine discharges because abundance and ecological indices were decreased in stations near the discharges area comparing to control stations far from the brine discharges zone. Results of the CCA indicated that salinity and temperature effects on polychaete structure. The most frequancy family in this study was spionidae that it showed tolerance of this family to brine discharges. With monsoon occurrence of stress added to the study area where that the lowest abundance (0) in one station in post monsoon.

Bibliographic Details

Main Authors:	Miri, M., Nabavi, S.M.B., Doustshenas, B., Safahieh, A.R., Loghmani, M.
Format:	article biblioteca
Language:	Persian
Published:	2014
Subjects:	Ecology, Iran, Brine, Desalination plant, Polychaeta assemblage, Salinity, Temperature,
Online Access:	http://hdl.handle.net/1834/39330
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