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MODIFICATIONS OF PHYTOPLANKTON STRUCTURE IN THE CIRIC LAKE DETERMINED BY ALGAL BLOOM


MIHAI COSTICĂ, NAELA COSTICĂ

Issue:

SCSB, Volume XI

Section:

Ecology, Limnology

Abstract:

Algal bloom takes place in the eutriphized waters and represents the expression of industrial development and ecological perturbation in the context of a negligence concerning the environment protection. The waters bloom is followed by the degradation of the water quality and the impossibility of using it for drinking, agriculture and amusement. Some species of blue-green algae produce toxins (Collins 1978, Codd 2000) and require strict control of the phenomenon of algal bloom.

In order to have control on the phenomenon of algal bloom, it is necessary to understand the mechanism that leads to this phenomenon. An explanation is that among the species of the phytoplankton there is competition for light and nutrients realized by biochemical, physiological and morphological mechanisms (Legrand Catherine 2003). It was noticed that Microcystis produces blooming more often in stagnant waters than in running waters (Pearl 1988). Thus, blooming is naturally controlled by water conditions and phytoplankton composition, and this implies classifying the existent species in phytoplankton before and after algal bloom (the objective of this study).

Keywords:

phytoplankton structure, algal bloom, Microcystis.

Code [ID]:

SCSB200611V11S03A0005 [0002507]


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