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   Impact of olive oil industry on benthic macroinvertebrates in the Kabylia region  
   
نویسنده merabet h. ,mouni l. ,zouggaghe f.
منبع journal of materials and environmental science - 2018 - دوره : 9 - شماره : 9 - صفحه:2753 -2767
چکیده    To study the effect of olive mill wastewaters on benthic macroinvertebrates, we opted to carry out a biological and physicochimical study in three rivers in the kabylia region . a series of water and wildlife was affected over three periods for two years ; from october 2015 to may 2017. the results relating to aquatic fauna during the olive period show a total disappearance of all taxa downstream from the point of discharge in thewadi bougdoura. as well as a decrease in the number of taxa at the point of discharge with a high number of pollu- resistant taxa such as diptera, at the point of discharge and down-stream in the wadi arkham during the olive period. we have also seen a disappearance of taxa sensitive to pollution such as trichoptera at the point of discharge and down-stream after the olive period. in the wadi bousselam, thermal and industrial pollution leads to a low number of all taxa at the point of discharge and downstream throughout the study period.the physicochemical study revealed a drop in dissolved oxygen up to 3.10 mg/l downstream discharge point and important mineralization at stations at the point of discharge and downstream where discharged olive mill wastewater, during the olive period. high concentrations of sulphates (265mg/l to 1012.5mg/l), chlorides (201.1 mg/l to 6922.5 mg/l), salinity (0.72 psu to 6.83 psu) and electrical conductivity (1.737 ms/cm to 14.92 ms/cm). nutritional salt (nitrate and nitrite) levels remain low in all study stations, ranging from 0.49 mg/l to 2.39 mg/l for no3⁻, and from 0.03 mg/l to 1.66 mg/l for no2⁻ .
کلیدواژه Olive mill wastewaters ,Water courses ,Benthic macroinvertebrates ,Physicochemical ,Kabylia
آدرس university of bejaia, faculty of nature and life sciences, department of environmental biological sciences, laboratory of management and valorisation of natural ressources and quality assurances, Algeria, university of bouira, laboratory of management and valorisation of natural ressources and quality assurances, Algeria, university of bouira, laboratory of management and valorisation of natural ressources and quality assurances, Algeria
 
     
   
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