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نویسندگان مقالات پربازدید :
هشتمین همایش بین المللی سواحل، بنادر و سازه های دریایی
جزئیات رویداد
اینستاگرام تی پی بین
همایش ، رویداد ، ژورنال
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  • an investigation on the environmental effects of the mond shrimp culture

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    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1387/01/01
    • تاریخ انتشار در تی پی بین: 1387/01/01
    • تعداد بازدید: 794
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the aim of this survey was the investigation on the probable effects of aquaculture effluents on the ecosystem, specially on microbenthose communities. physico-chemical factors, such as, nitrate, nitrite, phosphate, ph, salinity, dissolved oxygen, grain size, and also abundance of macro benthoses were measured in water and sediment during the aquaculture period , the measurements showed that the concentration of the ammonia , phosphate, nitrate, and nitrite in out flow were varied in the range of 0.014-0.456, 0.04-0.028, 0.27-0.132, and 0.006-0.016 ppm, respectively. the range of the salinity was 38-45 ppt, dissolve oxygen was 5.39-7.41ppm, and bod5 was from 7.9 to 8.42. the sediment texture was varied from lighter groups (i.e.sandy) to semi heavier groups (i.e loamy). the acidity of the sediment was in the range of 7.8-8.32, and tom was in the range of 0.213-0.470%. the abundance of the benthoses affected as follows: in the station no.1(in flow canal) crustaceans, polychatea, and bivalvia were more abundant than the others. in station no.2 (the out flow canal) the bivalves, and the polychataes; in station no.3 (marine station) the gastropoda, and foraminofera were more abundant than the other groups, approximately during the sampling period. these changes were more due to aquaculture effluents, especially in the out flow canal (station no.2). comparing the measured factors with the others investigations, and the standards showed that the activity of this complex has not threatened the environment yet, although monitoring studies is recommended.

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