TY  - JOUR
T1  - Density and Biomass of Phytoplankton in the Oubeira Lake (North-East Algeria)
AU - , Z. Branes AU - , M. Ounissi AU - , D. Sargos AU - , C. Amblard 
JO  - Journal of Fisheries International
VL  - 2
IS  - 3
SP  - 200
EP  - 206
PY  - 2007
DA  - 2001/08/19
SN  - 1817-3381
DO  - jfish.2007.200.206
UR  - https://makhillpublications.co/view-article.php?doi=jfish.2007.200.206
KW  - Oubeira lake
KW  -density
KW  -biomass
KW  -Phytoplankton
KW  -Algeria
AB  - The Oubeira Lake constitutes a vast extent of fresh water (5436 acre) of a maximal depth of 5m. Exploited for the irrigation, the drinking water and the extensive raising of 9 fish of which the silvery eel and the microphage species of Carps. This lake is considered as one of the biggest RAMSAR sites of Algeria (36°50`N, 8°23`E). The composition and the biomass of the phytoplankton have been analyzed monthly in three stations of the Oubeira Lake during a yearly cycle (October 2000-September 2001) in addition to the environmental parameters. The water temperature varied all along the months between 9 and 30 °C, the pH between 6.1 and 7.9, whereas the conductivity remained in the order of 1 mS. Unusually, the year 2001 was very little rainy with only 575 mm. The phytoplankton is formed mainly by the Cyanobacteria, Chlorophycea, Diatoms and in a least measures Euglenophycea. This basic population develops active densities up to 4×10<SUP>5</SUP> ind.L <SUP>1</SUP>. The monthly middle biomass is 203 µg CL<SUP> 1</SUP>. This stock is made largely of the Cyanobacteria (32.5%)  Chlorophyceae (27.1%) Diatoms (24.6%) and the Euglenophyceae (15.6%). The biomass reflects an important fertility and represents a wealth of the Oubeira
ER  -