Seasonal Variation of Microalgae Diversity in Lake Abaya, Ethiopia
Journal Title: International Journal of Oceanography & Aquaculture - Year 2018, Vol 2, Issue 5
Abstract
This study evaluated the seasonal variations of microalgae species diversity in relation to some physico-chemical parameters in Lake Abaya for a period of three consecutive seasons (between July 2008 and August 2009). The aim was to relate the seasonal variability in the physico-chemical parameters of the lake to the abundance and diversity of microalgae. Nine sampling sites were established in the lake, and samples were collected once every season. Transparency and pH were measured in-situ using a water quality checker Water samples for microalgae abundance and species composition were analyzed at the Ethiopian biodiversity institute. In the laboratory, pH values in the lake ranged from 7.8-8.0, 7.7-9.0, 7.3- 7.4in rainy, post rainy and dry season respectively. The preserved Microalgae samples and the fresh water samples grow on liquid media (BBM and BG-11) were examined using binocular microscope and their identification to genus or species level were made on the basis of various descriptors of Microalgae. The result indicated that generally chlamydomonas is dominant species in all season and the most diversity in general was phylum Chlorophyta and Bacillariophyta phylum respectively in Lake Abaya.
Authors and Affiliations
Damtew Etisa, Roman Nega, Woinshet Lule
Keywords
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- EP ID EP464227
- DOI 10.23880/ijoac-16000150
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