Hydro Biologycal Study Of Laft and Khamir (Khooran Estuaries)
2004
Khodadadi Jokar, Kazem | Seddigh, Mohammad Sedigh | Ebrahimi, Mahmood | Akbar Zadeh,Gholam Ali
Coastal area with a complex ecosystem such as estuaries, lagoons, creeks and …, are special for nurssery grounds, developing area for short time of larva of most marine organisms with high potential rate. Khooran estuaries are of high ecological importance in Hormozgan waters. In this study, fluctuations some biological and hydrological factors were monitored from Apr, 1999 to Apr, 2000 monthly, in khooran estuaries. Thirty-nine groups of fishes, 23 families of ichthyoplanktons, 6 groups of macrobenthoses and 54 genera of phytoplanktons were identified. Frequency and weight of sampled fishes was high during Oct, Nov, May and July respectively . density of ichthyoplanktons were higher in west branch, of estuary. The most frequency of ichthyoplanktone were related to Clupeidae, Gubiidae, Scianidae. Amongst phytoplanktons diatom,s density were higher than dinoflagellates and cyanophycea. Nematoda, Gastropode and Bivalva had the most density of macrobenthos in west branch and Bivalva, polychaeta and Crustacea were the most frequent groups at macrobenthos in the east branch estuaries. Chlorophyl a, nutrients (No3-No2-Po4- Sio2), Poc, Oc, Do, pH, Salinity and Temprature were measured from 12 sampling stations. Results showed that photosynthesis and photosynthesis plus detritus are the main resources of Poc in east and west branches respectively (P0.05). Sediment composition were made mostly of fine sand in mouth of estuarine branches and of silt and clay in other parts. Oxidized carbon rate showed a direct relationship with silt (r
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