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Phytoplankton assemblage of a small, shallow, tropical African reservoir

dc.creatorMustapha, Moshood K.
dc.date2008-12-15
dc.date.accessioned2016-05-03T15:35:52Z
dc.date.available2016-05-03T15:35:52Z
dc.identifierhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/5443
dc.identifier10.15517/rbt.v57i4.5443
dc.identifier.urihttp://hdl.handle.net/10669/27624
dc.descriptionI measured physico-chemical properties and phytoplankton in the small, shallow tropical reservoir of Oyun (Offa, Nigeria) between January 2002 and December 2003. I identified 25 phytoplankton genera in three sampling stations. Bacillariophyceae dominated (75.3%), followed by Chlorophyceae (12.2%), Cyanobacteria (11.1%) and Desmidiaceae (0.73%). The high amount of nutrients (e.g. nitrate, phosphate, sulphate and silica) explain phytoplankton heterogeneity (p < 0.05). Phytoplankton was abundant during the rainy season, but the transition period had the richest assemblage and abundance. Fluctuations in phytoplankton density were a result of seasonal changes in concentration of nutrients, grazing pressure and reservoir hydrology. The reservoir is eutrophic with excellent water quality and a diverse phytoplankton assemblage: fish production would be high. These conditions resulted from strategies such as watershed best management practices (BMPs) to control eutrophication and sedimentation, and priorities for water usage established through legislation. Additional measures are recommended to prevent oligotrophy, hypereutrophy, excessive phytoplankton bloom, toxic cyanobacteria, and run-off of organic waste and salts.en-US
dc.formatapplication/pdf
dc.languageeng
dc.publisherUniversidad de Costa Ricaen-US
dc.rightsCopyright (c) 2014 International Journal of Tropical Biology and Conservationen-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 57 (4) December 2009en-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 57 (4) December 2009es-ES
dc.sourceRevista Biología Tropical; Vol. 57 (4) December 2009pt-PT
dc.source2215-2075
dc.source0034-7744
dc.source10.15517/rbt.v57i4
dc.titlePhytoplankton assemblage of a small, shallow, tropical African reservoiren-US
dc.titlePhytoplankton assemblage of a small, shallow, tropical African reservoires-ES
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.coverageCRCen-US


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