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Please use this identifier to cite or link to this item: http://hdl.handle.net/1834/1109

Title: Influence of environmental variables on planktonic and phytobenthic communities in earthen ponds at Makoba, Zanzibar
Authors: Kyewalyanga, M.S.
Mwandya, A.W.
ASFA Terms: Environmental conditions
Fish ponds
Algal mats
Issue Date: 2004
Publisher: WIOMSA
Citation: Western Indian Ocean Journal of Marine Science, 3 (2), p. 123-133
Abstract: A study was conducted between July 2002 and June 2003 to assess the role of salinity, temperature, pH and dissolved oxygen on the abundance of planktonic (phyto- and zooplankton) and phytobenthic (algal mats) communities in shallow (40 cm depth) earthen ponds at Makoba, Zanzibar. Among the zooplankton, rotifer abundance peaked during the rainy period (salinity of 27–42‰) while protozoa and copepods were most abundant during the dry period (max salinity of 70‰). However, no season effects were seen on the phytobenthos. The most abundant genera were Pseudonitzschia sp., Schizothrix sp., Microcoleus sp. and Oscillatoria sp. and in general, algal mats were available throughout the year. Other variables such as temperature, pH and oxygen concentration did not show significant fluctuations over the study period.
URI: http://hdl.handle.net/1834/1109
ISSN: 0856-860X
Appears in Collections:Western Indian Ocean Journal of Marine Science - Archive

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