Macrobenthic fauna assessment around of Mazandaran Wood and Paper industrial of Tajan River in Sari's area
Subject Areas : New Technologies in Aquaculture Development
Keywords: Keywords: Tajan River, Mazandaran wood and paper industrial, Macrobenthic fauna,
Abstract :
Abstract The purpose of this study is the assessment of macrobenthic fauna including diversity, density and abundance in Tajan River, around of Mazandaran Wood and Paper industrial of Tajan River in Sari's area. Sampling of macrobenthic was performed monthly in 2011-2012 in the six stations by Surber. At this study, 16 families belonging to 7 orders and 3 class’s macrobenthic were identified and counted. The Results showed that, overall, the most abundance in the all stations belonging to the family of Batidae and Hydropsychidae and least abundance in the all stations belonging to the families Limoniidae, Cordulegasteridae, Polycentropidae, Platycenmidae and Chroloperlidae. Based on results of Hilsenhoff Biotic Index (HBI), the average of the highest rates for HBI was in the station 6 (last station) in the spring and the lowest pollution was in station 4 (arrival sideway branch of Salardareh River) in winter. According to the results, the average of diversity and density increased in summer and decreased in cold seasons. Also in terms of the spatial dimension, the highest diversity and density of which belonged to station 1 that located in the upstream, and the lowest diversity and density of macrobenthic belonged to station 3 (located after entry pollution of Mazandaran Wood and Paper industrial), that it shows effect of Wood and Paper industrial wastewater on macrobenthic fauna.
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