[صفحه اصلی ]   [Archive]  
:: صفحه اصلي :: درباره نشريه :: آخرين شماره :: تمام شماره‌ها :: جستجو :: ثبت نام :: ارسال مقاله :: تماس با ما ::
:: دوره 16، شماره 3 - ( 4-1396 ) ::
جلد 16 شماره 3 صفحات 1085-1097 برگشت به فهرست نسخه ها
The effects of Oncorhynchus mykiss culture on the limnological conditions of Hanna Reservoir, Isfahan, Iran
چکیده:   (472 مشاهده)
This study was conducted at the Hanna Reservoir located in the southwest of Isfahan Province. According to this study, chemical analyses were conducted to evaluate the magnitude and variations of COD, BOD5, O2, NH3+ and NO2-concentrations in the Hanna Reservoir. In the headwaters the magnitude values of BOD5, COD and early morning oxygen minima were quite identical to the recommended optimum levels. However the concentrations of :::union:::ized ammonia in winter and spring and the concentration of nitrite in summer and autumn exceeded the allowable levels cited in different literature and might have exerted some growth retarding or lethal effects on the fish population. Water quality, zooplankton, benthos and sediments were monitored at sites of 20 m depths to determine the effects of rainbow trout cage culture on the lake environment. Oxygen depletion occurred in the vicinity of the farms due to respiration of the farmed fish. Zooplankton had stronger nutritional value in all six ecosystems of the Hanna Reservoir, and in seasons during which fish feed on these nutritional sources, breeding occurs with higher efficiency. Benthic invertebrates were rare at all six sites of the lake. The sediments below the cages had a pH and organic matter comparable to areas of the lake receiving the natural input of allochthonous material.
 
متن کامل [PDF 749 kb]   (263 دریافت)    

دریافت: ۱۳۹۶/۵/۲۱ | پذیرش: ۱۳۹۶/۵/۲۱ | انتشار: ۱۳۹۶/۵/۲۱
ارسال نظر درباره این مقاله
نام کاربری یا پست الکترونیک شما:

کد امنیتی را در کادر بنویسید >



XML   English Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Daniali S, Soltani M, Kamali A, Shamsaei M. The effects of Oncorhynchus mykiss culture on the limnological conditions of Hanna Reservoir, Isfahan, Iran . IJFS. 2017; 16 (3) :1085-1097
URL: http://jifro.ir/article-1-2879-fa.html
The effects of Oncorhynchus mykiss culture on the limnological conditions of Hanna Reservoir, Isfahan, Iran . مجله علوم شیلاتی ایران. 1396; 16 (3) :1085-1097

URL: http://jifro.ir/article-1-2879-fa.html

دوره 16، شماره 3 - ( 4-1396 ) برگشت به فهرست نسخه ها
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
Persian site map - English site map - Created in 0.048 seconds with 798 queries by yektaweb 3535