Water Quality and Species Diversity of Intertidal Macroalgae.
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Date
2003
Métadonnées
Afficher la notice complèteAbstract
Spatial and temporal changes in species diversity, abundance and composition of macroalgae in the intertidal zones at Kanamai and Da Gama Point along the Kenyan north coast were studied from March to September 1999 to investigate their relationship with water quality. A total of 63 species of macroalgae were collected, 23 belong to Chlorophyta, 23 to Rhodophyta and 17 to phaeophyta. There was an increase in the coliform number per 100ml of water from 60 to >1600 and from 90 to 1600 at Kanamai and Da Gama Point respectively. Phosphate levels showed an increase from 0.56 to 1.025 and from 1.420 to 1.750 mu g atoms P/litre for Kanamai and Da Gama Point respectively. Ammonia also incleased from 1.350 to 1.540 and from 3.800 to 4.250 mu g atom N/litre for Kanamai and Da Gama Point respectively. At Da Gama point there was a tendency towards dominance by fewer species. Pollution by sewage and elevated nutrient levels is evident. Kanamai is less nutrient-rich resulting in the higher species diversity, composition and eveness in distribution.Page Range
pp.65-79Title of Parent Book or Report
Recent advances in coastal ecology: studies from Kenya.Publisher or University
African Studies CentreSeries : Nr
Research Report African Studies Centre;70Resource/Dataset Location
http://asc.leidenuniv.nlCollections