TY - JOUR
T1 - Dynamic Densities and Specific Cyanobacteria Biomass of Oubeira Lake (National Parc of Elkala, Algeria)
AU - Zidane, Branes AU - Akila, Abdi AU - Ounissi, Makhlouf AU - Christian, Amblard
JO - Environmental Research Journal
VL - 7
IS - 1
SP - 9
EP - 14
PY - 2013
DA - 2001/08/19
SN - 1994-5396
DO - erj.2013.9.14
UR - https://makhillpublications.co/view-article.php?doi=erj.2013.9.14
KW - Biomass
KW -cyanobacteria
KW -density
KW -Oubeira Lake (EL-Kala
KW - Algeria)
KW -North
AB - Oubeira is an endorheic freshwater lake rich in organic substances
and therefore it is considered as an ecosystem very favorable to the proliferation
of potentially toxic cyanobacteria. The aim of the present study is to investigate
the specific dynamics of cyanobacteria with an estimated production of biomass.
The obtained results showed that Oubeira is highly favorable for the development
and growth of cyanobacteria. Such class is dominated by species Aphanizomenon
flos-aquae in the station North and center station with densities of 14x105
and 107 cell mL-1, respectively. They are relatively high
compared to other species of cyanobacteria. At the South station, the densities
seem unaffected by the season’s variations and remain constant at about
106 cell mL-1. The species Microcystis aeruginosa,
Chroococcus turgid, Oscillatoria rubescens and Anabaenopsis
elenkini displayed similar densities at whole station with a slight dominance
of Anabaenopsis elenkini. The contribution of cyanobacteria seems under
the domination of Microcystis aeruginosa where its biomass is much higher
than the other species. The maximum production was observed in the Southern
station during July with 120 μgC L-1. Whereas the biomass is
much lower in the North and center stations where they reach 70 μgC L-1.
Moreover, the genus of cyanobacteria that dominate the Oubeira Lake are Microcystis,
Aphanizomenon and to a lesser extent Anabaenopsis.
ER -