Water Quality in the Integrated Mariculture Pond Systems (IMPS) at Makoba Bay, Zanzibar, Tanzania
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The Makoba integrated mariculture pond system project (IMPS) has been on-going since 1998. Except for a period from mid 1999 to 2001, various water quality parameters, namely temperature, salinity, pH, dissolved inorganic nutrients and dissolved oxygen concentration and saturation, have been monitored continuously. In 2002, measurement of sediment oxygen demand (SOD) and consumption of oxygen by sediments was initiated. Dissolved oxygen concentration varied from the highest monthly average of 7.16 mg/l in October 1998, to 2.2 mg/l in March 2000 (r = –0.69). Nutrient concentrations remained moreor- less constant, except in the finfish ponds, where slight variations were recorded. The lowest concentration of ammonium-nitrogen (3.02 mg-at N/l) was recorded in the Kiwani creek in December 2001, and the highest (18.02 mg-at N/l), in the finfish ponds in December 1998. In 2002 the concentrations became much lower and the overall regression from 1998 to 2002 was negative. Dissolved.....
JournalWestern Indian Ocean Journal Of Marine Science
Spatial CoverageZanzibar, Tanzania
CitationWestern Indian Ocean J. Mar. Sci., 2 (1), p. 15-23
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