List of Articles Hilsenhoff index

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  1 - Benthic population of Jajrood River branches in Tehran province
  R. Mousavi Nadushan S. Raeisi
  In the present study macroinvertebrate community of Jajrood River branches was studied. Sampling from branches of Abnik, Zayegan, Lalan and Ahar was conducted in spring and summer of 1393. Benthic invertebrate were collected by Surber sampler (35 × 35 cm) and fixe More

  In the present study macroinvertebrate community of Jajrood River branches was studied. Sampling from branches of Abnik, Zayegan, Lalan and Ahar was conducted in spring and summer of 1393. Benthic invertebrate were collected by Surber sampler (35 × 35 cm) and fixed in 10% formalin. Benthos samples were separated in the laboratory by lifting loop and were identified at genus level. To assess the ecological condition and water quality Hilsenhoff and EPT indices were used. In general, 28 genus and 3 phyla, 5 classes, 9 orders and 24 families were identified in macroinvertebrate community of these rivers. The highest density of benthos was seen in Lalan branch (842 per square meter), in spring and summer. Among the genera found in all branches, except in Ahaar branch, maximum density was seen for Epeorus genus in summer and Baetis genus in spring. Based on analysis of variance (ANOVA) and post hoc LSD test, significnat difference was only seen when benthos population of Ahaar was compared with the other branches (P <0.05). Manuscript profile
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  2 - Macro invertebrate benthos of Kalarood River as water quality index
  M. Shapoori A. Vosooghi M. Babazade S. Vatandoost
  In this research, water quality of Kalarood River of Babol was studied by identification of Macro invertebrate benthos. The result of this study was compared by ratio of EPT to Chironomidae and HFBI index. Six stations were selected and sampling was done seasonally for More

  In this research, water quality of Kalarood River of Babol was studied by identification of Macro invertebrate benthos. The result of this study was compared by ratio of EPT to Chironomidae and HFBI index. Six stations were selected and sampling was done seasonally for one year. Arthropoda and platy worm are the main branch of invertebrate benthos; in four class, eight order and eleven families. Maximum and minimum of diversity and density was observed in spring and summer in all stations, respectively. Also maximum and minimum of diversity was measured in station one and six, respectively. The relationship between physical and hydrological parameters were significant (p<0.05) in different season but it was not significant in different stations (p>0.05). HFBI index showed that minimum, maximum and average of this index was 3.99 in fall, 4.62 in spring and 4.33 respectively. The result of this study indicated that the water quality in the upstream was in normal range (good to medium condition) but in the other hand downstream and middle stream was in good condition. Manuscript profile