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Showing 2 results for Shakoori
- Mehdi Naderi Jolodar, - Mohammad Ali Afraei Bandpei, - Hassan Nasrollahzadeh Saravi, - Reza Safari, - Asieh Makhlough, - Matin Shakoori,
Volume 10, Issue 3 (Autumn 2022)
Abstract
The current research was conducted in 2021 in 5 stations in order to investigate the quality of water before the operation of Javeh Dam in Kurdistan Province. Sampling of fish and Macrobenthos was done using an electrofishing device and Surber sampler, respectively. A total of 13 fish species were identified, which belonged to 3 families: Cyprinidae, Mastacembelidae and Nemachielidae. Out of the total of 2003 fish caught in all the stations, more than 96.6% belonged to the Cyprinidae family. The highest relative frequency of 32.4% belonged to Capoeta damascina species. In addition, 2 exotic species, Carrasius auratus and Carrasius gibelio had an abundance percentage of 1.4. The diversity of fish species decreased from station 1 (upstream) to stations 2 and 3, which was probably influenced by human activities such as various types of pollution, but in station 5 of It had the maximum amount, which is due to the change in habitat conditions, such as the increase in flow rate and water depth. The results showed that the species diversity of fish had changes in different seasons, so that its minimum was estimated at 0.91 in winter and its maximum at 1.29 in summer. Macrobenthos included 10 families Chironomidae, Lumbriculidae, Simulidae, Baetidae, Hydropsychidae, Erpobdelidae, Glosiphonidae, Gamphidae, :union:idae and Potamidae. The classification of water quality based on the Karr ecological integrity showed that stations 1 and 4 were placed in the good quality class with a numerical value of 40 and 42, respectively, and stations 3 and 5 were placed in the very low and medium water quality classes with a numerical value of 9 and 34, respectively. In this way, it is necessary to manage and organize all sources of point and non-point pollutants in Gheshlagh and Gavehroud tributaries.
Dr Mehdi Naderi Jolodar, Dr Nima Pourang, Dr Mohammad Ali Afraei Bandpei, Dr Abdolhamid Azari, Dr Rahime Rahmati, Dr Matin Shakoori,
Volume 11, Issue 3 (Autumn 2023)
Abstract
The purpose of this study is to identify the Zooplankton and Macrobenthic communities and to determine the water quality using the Saproby and Hilsenhoff indices in the downstream of Tajan River with the aim of investigating the place of release fish fry. In this research, 7 stations were selected along the Tajan River from the downstream of Tajan Bridge to the mouth of the river and sampling was done monthly from May to October 2022. In Zooplankton sampling, 100 liters of water were filtered by a plankton cone net. Sampling of Macrobenthoz was done by Grab device (225 cm2) and Sorber sampler (1600 cm2) with 3 repetitions in each station. A total of 25 Zooplankton species were identified during one-year sampling in different stations from Holoplankton and Zoobenthoz groups. During this survey, 8 families including Chironomidae, Simuliidae, Baetidae, Hydropsychidae, Gammaridae, Lumbriculidae, Spionidae and Erpobdellidae were identified. The results showed that all the stations are on average in the β-mesosaprobity quality class with relatively polluted water. Based on Hilsenhoff biological index, the degree of organic pollution and water quality in different stations range from the high quality class (no pollution) in stations 6 and 7 (at a distance of 1 km from the coastline and the estuary) to the medium class with relatively significant pollution in station 1 and 2 (after Tajan Bridge and 15 km below Tajan Bridge). According to the results, it can be said that these indicators are suitable for evaluating the water quality of Tajan River and more suitable indicators should be used for stations 6 and 7. Station 4 at a distance of 7 km from the sea coast (Soteh) had the best water quality conditions with little pollution, thus it seems that the best place to release fish fry in terms of water quality conditions is in Soteh. Due to the proximity of the water quality distance in the study area, habitat parameters should be taken into account to determine the exact location of the release of fish fry.
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