Fisheries Department, Faculty of Natural Resources, University of Guilan, Sowmeh-sara, Iran
Abstract
In this study health status of Shahroud River located in Qazvin Province was examined. Macroinvertebrate samples were collected by Surber sampler (area of 0.16 m2 with 100 micron mesh size) in 95 km river length at 9 sampling stations with 3 replicates in each station. Samples were taken in 45 day intervals from 11th Nov. 2011 to 9th Sept. 2012. The collected samples were preserved in 4% formalin solution and transported to the laboratory for identification and further analyses. Total abundance, EPT diversity, percentage EPT and EPT to CHIR ratio were calculated. Species diversity, richness and evenness were determined according to Shannon- Weiner, Margalev and Pielou indexes. Minimum abundance of macroinvertebrates were observed in summer and maximum in spring. The lowest and highest Shannon– Weiner values were 0.93 and 2.24, Margalev index 0.33 and 1.64 were observed in summer and spring at station 1 (upstream) and stations 8 and 9 (downstream) respectivelyThe lowest and highest Hilsenhoff Biotic index (HFBI) values were 3.29 and 6.37, were observed in winter and summer at station 1 (upstream) and stations 9 (downstream) respectively. The study showed that biotic and population indexes are capable of providing useful assessment of health quality in running water ecosystems.
Mahmoudi Fard, A., Iman Pour, J., Allaf Novirian, H., & Gholami Dashtaki, K. (2016). Use of Macroinvertebrate based Biotic and Population indexes to assess ecological status of Shahroud River- Qazvin. Journal of Animal Environment, 8(3), 145-158.
MLA
Abbas Mahmoudi Fard; Javid Iman Pour; Hamid Allaf Novirian; Kamyab Gholami Dashtaki. "Use of Macroinvertebrate based Biotic and Population indexes to assess ecological status of Shahroud River- Qazvin". Journal of Animal Environment, 8, 3, 2016, 145-158.
HARVARD
Mahmoudi Fard, A., Iman Pour, J., Allaf Novirian, H., Gholami Dashtaki, K. (2016). 'Use of Macroinvertebrate based Biotic and Population indexes to assess ecological status of Shahroud River- Qazvin', Journal of Animal Environment, 8(3), pp. 145-158.
VANCOUVER
Mahmoudi Fard, A., Iman Pour, J., Allaf Novirian, H., Gholami Dashtaki, K. Use of Macroinvertebrate based Biotic and Population indexes to assess ecological status of Shahroud River- Qazvin. Journal of Animal Environment, 2016; 8(3): 145-158.
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