| Registro completo |
| Provedor de dados: |
OceanDocs
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| País: |
Belgium
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| Título: |
Influence of environmental variables on planktonic and phytobenthic communities in earthen ponds at Makoba, Zanzibar
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| Autores: |
Kyewalyanga, M.S.
Mwandya, A.W.
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| Data: |
2006-01-24
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| Ano: |
2004
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| Palavras-chave: |
Pseudonitzschia
Schizothrix
Microcoleus
Oscillatoria
Environmental variables
Planktonic organisms Environmental conditions Salinity Temperature Fish ponds Algal mats Environmental conditions Salinity Temperature http://aims.fao.org/aos/agrovoc/c_32980 http://aims.fao.org/aos/agrovoc/c_6751 http://aims.fao.org/aos/agrovoc/c_7657
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| Resumo: |
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.
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| Tipo: |
Journal Contribution
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| Idioma: |
Inglês
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| Identificador: |
Western Indian Ocean Journal of Marine Science, 3 (2), p. 123-133
0856-860X
http://hdl.handle.net/1834/1109
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| Editor: |
WIOMSA
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| Formato: |
155660 bytes
application/pdf
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