List of Articles Gahar Lake

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  1 - Identification and community structure of macro-benthose in Gahar Lake (Lorestan Province)
  R. Mousavi Nadushan M.R. Fatemi N. Hasani
  Lake Gahar is located in southwest of Iran, in East Lorestan province and at 2350m above sea level. There is little information and few studies on limnology of this lake . This tectonic lake is known to have a unique macro- invertebrate fauna. In order to perform a comp More

  Lake Gahar is located in southwest of Iran, in East Lorestan province and at 2350m above sea level. There is little information and few studies on limnology of this lake . This tectonic lake is known to have a unique macro- invertebrate fauna. In order to perform a complete research on the zoo-benthic community of the lake, the present study was conducted during a period of seven months from April 2011 to December 2011 with the exception of 5 months during very cold seasons when the lake was covered by ice. The benthic assemblage was sampled monthly from 3 sites in profundal zone. In total 6 genera and species and 5 families were found  from which 1 species is unique in Iran. In this research, the dominant species of the lake are Quistadrilus multisetasus , Stylodrilus  herngianusof class Oligochaets and Pisidium casertanum of class Bivalvia. Their abundance  percentage determined  in respect of total distribution were %69, %13 and %6, respectively. The maximum abundance of total population of macro- benthos in Gahar lake was 11617.78±4910.379 individual per square meter in May and the minimum was 1436.32±671/87 individual per square meter in April. Manuscript profile
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  2 - Assessment of Gahar Lake Trophic Status using TLI Index
  M. Ghiyas Abadi R. Mousavi Nadushan M.R. Fatemi A. Jozi
  Gahar Lake is an unique high-mountain lake, "Paternoster" form with glacial origin. There isn’t any research on the ecology of the lake, so in order to assess trophic status of small and great Gahar lake for the first time using TLI, the present study was conducte More

  Gahar Lake is an unique high-mountain lake, "Paternoster" form with glacial origin. There isn’t any research on the ecology of the lake, so in order to assess trophic status of small and great Gahar lake for the first time using TLI, the present study was conducted during a period of 1 year (except 3 months of ice period) from May 1389 to May 1390. Trophical parameters, Secchi depth (SD, transparency), chlorophyll a concentration and nutrients including Total Nitrates (TN) and Total Phosphorus (TP) was sampled monthly and zooplankton assemblage was measured. For statistical analysis of data in this study, we used the SPSS and Excel softwares. Based on the study of small Gahar lake, mean concentration of chlorophyll was 2.96µg.l-1, TN 801µg.l-1 and TP 25.3µg.l-1. In great Gahar lake, mean concentration of chlorophyll was 1.6µg.l-1, TN 976.5µg.l-1, TP 24.2µg.l-1 and mean value of secchi depth was 6.8m. According to TLI, the great Gahar Lake belongs to status of Mesotrophic level and the small Gahar Lake to Eutrophic level of the trophic scale. Manuscript profile