Author/Authors :
Mohammadi Roozbahani، Maryam نويسنده Department of Environmental Science, Graduate School of the Environment, Science and Research Branch, Islamic Azad University, Khouzestan, Iran , , Hosseini Alhashemi، Azamalsadat نويسنده Department of Environmental Science, Graduate School of the Environment, Science and Research Branch, Islamic Azad University, Khouzestan, Iran , , Harirforoush، Amir نويسنده Department of Environmental Science, Graduate School of the Environment, Science and Research Branch, Islamic Azad University, Khouzestan, Iran ,
Abstract :
Polycheates are one of the most important groups of macroinverteberates that reflect to the environmental pollutions and disturbances. We can use of these organisms for assessing the marine ecosystems. For this propose, 6 sampling stations with 4 replicates in two transect has been selected from January 2011 to June 2012 in the Northwest of Persian Gulf. Also physiochemical parameters of water, grain size analysis and percentage total organic matter (TOM) of sediment were determined. The diversity of Polycheates were calculated. The correlation coefficients of all above parameters were calculated. 17 families of Polycheates have been identified that located in ecological groups ?, ??, ???, ?V and V. The highest abundance was belong to winter (1019.87 ± 152.42) N/m2 and the lowest was belong to spring (584.33 ± 68.45) N/m2. The highest diversity was obtained in winter (Simpson index: 0.13 ± 0.01, H´: 2.27 ± 0.12) and the lowest diversity was obtained in spring (Simpson index: 0.16 ± 0.01, H´:1.77 ± 0.20).. Among stations, the stations that located near to the beach had lower diversity .In all stations, the diversity indices showed moderate pollution (H´: 1 - 3) due to the anthropogenic activities and disturbance such as fishing activities related to wharf.
