Studies on Soil Algal Flora in Kafr El-Sheikh Governorate, Egypt

Abstract

In this study, soil samples were collected from ten different regions comprising the main ten cities of Kafr El-Sheikh Governorate during 2002. The Physico-chemical characteristics of the soil were investigated. The results showed remarkable differences among various sites. Twenty six genera including 40 species of algae were isolated and identified from the soil samples. They were 11 genera including 25 species of cyanobacteria and 15 genera including 15 species of green algae. The physico-chemical characteristics of soils in relation to algal distribution have also been considered.

Isolation and Identification of Dominant N2 Fixing Cyanobacterial Strains from Different Locations

“…Isolation and purification of cyanobacteria dominated in the soil samples collected from different sites in Kafr El-Sheikh, and El-Dkahlia governorates (El-Gamal et al ., 2008) ,isolates were successfully obtained as bacterial free cyanobacteria. They were identified cyanobacteria was carried out using the following: Thallus color, thallus morphology and dimension, size of heterocyst, vegetative and reproductive cells.…”

“…The following methods were applied on air-dried soil samples collected from different sites in Kafr El-Sheikh and El-Dakahlia governorates (El-Gamal et al, 2008), BG11 medium (Staub, 1961) and modified Watanabe medium (El-Nawawy et al, 1958) for isolation and culturing of cyanobacteria. Semi-solid medium as described by El-Ayouty and Ayyad (1972) were applied.…”

Characterization of Cyanobacterial Strains Isolated from Soils Polluted with Insecticides

“…Twelve cyanobacterial isolates were obtained from a soil sample polluted with insecticides in Kafr El-Sheikh as described by El-Gamal et al (2008). These twelve isolates were found to be belonging to four genera (Anabaena, Nostoc, Oscillatoria and Chroococcus).…”