A Study of phytoplankton as Bioindication in the waters of The Al-Kabir Al-Shamali River under the influence of some environmental factors in Lattakia.

Abstract

   This research aims to study phytoplankton as bioindicators of the waters of the Al-Kabir Al-Shamali River. Species of diatoms and green algae were identified in sites far from pollution sourves, where they can be considered as bio-indicators indicating that the water is clean. Some species of dinoflagellates and blue algae were also identified in sites affected by pollution from organic liquid waste, whether domestic or industrial. Six different locations in the river were selected in November, during which water samples were collected to determine chlorophyll a concentrations, phytoplankton abundance and specific composition. The recorded chlorophyll (a) concentration ranged between (2.8-1.6 mg\m³) abundance values ​​ranged between (9321-5374 cell/L), Field measurements were also made of some physical and chemical factors (temperature, salinity, dissolved oxygen (DO), pH ,NO₃^-, PO₄^-3, SiO₄^-4) for the studied river sites.(85) phytoplankton species were identified, distributed as follows: (43) species belong Diatomophyceae,(14)species belonging Diatomophyceae,(16)species belonging to Chlorophyceae,(8)species belonging Cyanophycean,(4) species belonging Euglenophyceae.