ALGAL FLORA OF AIN HELWAN II. THE SOIL ALGAE

Document Type : Original Article

Author

Botany department, Faculty of science, Cairo University

Abstract

Seasonal soil samples were collected, from soils on both sides of the spring passage, during the period of April 2004 to January 2005 and physico-chemical analyses have been performed for investigation. Isolation and identification of the different algal species were carried out. Concerning the physical soil characteristics, fluctuations of environmental temperature were seasonally recorded which ranged 15 - 44 ºC, pH values ranged from slightly acidic to moderately alkaline (6.5 – 8.6) and soil moisture content ranged 20.3- 30.6%. Seasonal fluctuations in chemical soil characteristics were recorded (anions, cations and micronutrients). The total identified algae in the soil samples were 86 genera and 165 species belonging to four algal divisions; Cyanobacteria (98 species), Chlorophyta (34 species), Bacillariophyta (32 species) and only one species belonging to Chrysophyta. Autumn soil sample recorded the maximum number of algal population followed in descending order by spring, summer, and winter soil samples. It seemed that the diversity of algal community in soil samples was mainly correlated with some physico-chemical characteristics of the soil samples.

Keywords

References

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