Estimation of field Biotic Index and Water Quality of streams in North west of Shiraz region,Iran using Aquatic Insect fauna
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2014, Vol 8, Issue 5
Abstract
In this paper, biotic index of streams in North West of Shiraz region using aquatic insect fauna were studied. A total of 11 families were collected and identified in four habitat codes of streams and biological parameters were calculated for the streams. Water pollution was determined using biotic index formulation of aquatic insects. Main factors in this estimation are number of specimens in taxonomic groups, the pollution tolerance and the total number of aquatic insects.Aquatic insects are given a numerical pollution tolerance score ranging from 0 to 10. Zero taxa are extremely intolerant of low dissolved oxygen; taxa with score of 2 through 9 are tolerant to varying degrees; taxa which can survive great amounts of pollution are scored 10. In this survey, biotic index of North West of Shiraz region streams were 4.5. As a result water quality in studied area was very good (possible slight organic pollution).
Authors and Affiliations
H. Bashti| Entomology Department, Islamic Azad University, Science and Research Branch, Fars, Iran, H. Ostovan| Entomology Department, Islamic Azad University, Science and Research Branch, Fars, Iran
Keywords
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