Research Article: Trophic status index and natural fisheries potential of some Iranian reservoirs

  • سال انتشار: 1399
  • محل انتشار: مجله علوم شیلات ایران، دوره: 19، شماره: 6
  • کد COI اختصاصی: JR_JIFRO-19-6_001
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 227
دانلود فایل این مقاله

نویسندگان

A.R. Mirzajani

Inland water Aquaculture Research Center, Iranian Fisheries Science Research Institute, Agricultural Research Education and Extension Organization (AREEO)

Sh. Abdolmalaki

Inland water Aquaculture Research Center, Iranian Fisheries Science Research Institute, Agricultural Research Education and Extension Organization (AREEO)

J. Daghigh Roohi

Inland water Aquaculture Research Center, Iranian Fisheries Science Research Institute, Agricultural Research Education and Extension Organization (AREEO)

H. Babaei

Inland water Aquaculture Research Center, Iranian Fisheries Science Research Institute, Agricultural Research Education and Extension Organization (AREEO)

A. Abedini

Inland water Aquaculture Research Center, Iranian Fisheries Science Research Institute, Agricultural Research Education and Extension Organization (AREEO)

M. Sayad Borani

Inland water Aquaculture Research Center, Iranian Fisheries Science Research Institute, Agricultural Research Education and Extension Organization (AREEO)

چکیده

The Iran Water Resources Management Company constructs many dams to control surface water that provide a new potential for aquaculture activities. Trophic status index and natural potential for fish production were investigated in nine small dam reservoirs from northwest of Iran. Prediction of fish productivity was calculated based on phytoplankton biomass (using chlorophyll a concentration in water; PChl-a) and benthic macro invertebrate biomass (PBMI). Average PChl-a and PBMI of reservoirs were estimated as ۲۳۳.۹±۴۷۹.۴ kg ha-۱yr-۱ and ۱۴.۷۶±۱۹.۱۸ kg ha-۱yr-۱ respectively. Concentrations of total phosphorus and total nitrogen varied between ۰.۰۲۳-۰.۳۴۵ and ۰.۴۲-۳.۵۸ mgl-۱, respectively. According to Carlson's transformed model (TSIPN) the mesotrophic status was dominant in reservoirs in which TSIPN varied between ۳۸.۷ and ۵۱.۲. The eutrophication trend seems to be very fast in these reservoirs because of high nutrient input by aquacultures activities. The usage of fertilizers and amounts of food for aquaculture proposes and expansions of exotic species decline the natural fisheries potential of these reservoirs. Maintenance of water quality and investigation of native species should be planned to preserve sustainable fisheries activities in these reservoirs.

کلیدواژه ها

Natural potential, Trophic status index, Reservoirs, Iran

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.