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RBT5443
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ojs
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RBT54432022-06-06T18:20:04Z Phytoplankton assemblage of a small, shallow, tropical African reservoir Phytoplankton assemblage of a small, shallow, tropical African reservoir K. Mustapha, Moshood Embalse de agua dulce hidrología conjunto de fitoplancton nutrientes calidad de agua Freshwater reservoir hydrology phytoplankton assemblage nutrients water quality I 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. Universidad de Costa Rica 2009-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article Text application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/5443 10.15517/rbt.v57i4.5443 Revista de Biología Tropical; Vol. 57 No. 4 (2009): Volume 57 – Regular number 4 – December 2009; 1009–1025 Revista de Biología Tropical; Vol. 57 Núm. 4 (2009): Volumen 57 – Número regular 4 – Diciembre 2009; 1009–1025 Revista Biología Tropical; Vol. 57 N.º 4 (2009): Volume 57 – Regular number 4 – December 2009; 1009–1025 2215-2075 0034-7744 10.15517/rbt.v57i4 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/5443/5189 Copyright (c) 2009 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0
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| institution |
Universidad de Costa Rica
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| collection |
Revista de Biología Tropical
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| language |
eng
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| format |
Online
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| author |
K. Mustapha, Moshood
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| spellingShingle |
K. Mustapha, Moshood
Phytoplankton assemblage of a small, shallow, tropical African reservoir
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| author_facet |
K. Mustapha, Moshood
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| author_sort |
K. Mustapha, Moshood
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| title |
Phytoplankton assemblage of a small, shallow, tropical African reservoir
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| title_short |
Phytoplankton assemblage of a small, shallow, tropical African reservoir
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| title_full |
Phytoplankton assemblage of a small, shallow, tropical African reservoir
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| title_fullStr |
Phytoplankton assemblage of a small, shallow, tropical African reservoir
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| title_full_unstemmed |
Phytoplankton assemblage of a small, shallow, tropical African reservoir
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| title_sort |
phytoplankton assemblage of a small, shallow, tropical african reservoir
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| title_alt |
Phytoplankton assemblage of a small, shallow, tropical African reservoir
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| publisher |
Universidad de Costa Rica
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| publishDate |
2009
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| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/5443
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| work_keys_str_mv |
AT kmustaphamoshood phytoplanktonassemblageofasmallshallowtropicalafricanreservoir
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| _version_ |
1810114540543672320
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