Editorial Board

Editor-in-Chief: Petre Gastescu, Hyperion University of Bucharest (Romania)
Managing Editor: Petre Bretcan, Valahia University of Targoviste (Romania)
Volume 8(2) / 2014
ISSN: 1844-6477 (print version)
ISSN: 2284-5305 (electronic version)

 

 

  

 

PRELIMINARY SURVEY OF PHYTOPLANKTON LAKHAL LAKE DAM (SOUTHEAST OF ALGERIA) BY USING PALMER AND NYGAARD’S ALGAL INDEX

 

Fella HAMAIDI-CHERGUI 1, Mohamed Brahim ERRAHMANI 1,2, Mohand Said HAMAIDI 1, Fatouma BENOUAKLIL 1, Hichem KAIS 1

1Department of Biology, University Blida 1, BP 270, Route de Soumaâ, Blida, Algeria
2Department of Chemistry, University Blida 1, BP 270, Route de Soumaâ, Blida, Algeria, e-mail: hamaidifella@yahoo.fr

Abstract

In present investigation, algal communities which are used as indicator of organic pollution were reported from three stations of Lakhal reservoir over a two-years period (April 2006-March 2008). Total of 258 taxa have been identified, among these 117 species belonged to Chlorophyceae, 67 species to Bacillariophyceae, 38 species to Cyanophyceae, 17 species to Euglenophyceae, 9 species to Pyrrophyta, 7 species to Xanthophyta and 3 species to Rhodophyta. Chlorophyceae members constituted the dominant phytoplankton group in terms of species number. In the same time, the physico-chemical water quality of Lake was monitored in order to bridge the information on its limnology. The mean values of temperature of water, electrical conductivity (EC), pH, dissolved oxygen percent saturation (DO), nitrates, nitrites, sulfates, ammonia, inorganic phosphorous, chloride, sodium, calcium, magnesium, organic matter (Org. m.) and chlorophyll a (Chl. a) were analyzed to assess the trophic status of Lakhal reservoir. A statistical analysis was done using the Principal Component Analysis (PCA). The most pollution tolerant species of Euglena, Phacus, Phormidium, Oscillatoria, Microcystis, Scenedesmus, Eudorina, Pandorina, Pediastrum, Chlamydomonas, Closterium and Nitzschia listed. These are pollution tolerant genera and species according to Palmer (1969). The algal communities indicate that the reservoir was highly organically polluted. The Nygaard’s compound index value and composition of phytoplankton indicate that the trophic state of Lakhal Dam Lake was eutrophic.

Keywords:Lakhal Dam Lake, Algal biodiversity, water quality, Palmer index, Nygaard’s index, Algeria

  
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