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Okemwa, E.N. (1989). Analysis of six 24 hours series of zooplankton sampling across a tropical creek, the Port Reitz, Mombasa, Kenya. Tropical Zoology 2:123-138.
105929
10.1080/03946975.1989.10539433 [view]
Okemwa, E.N.
1989
Analysis of six 24 hours series of zooplankton sampling across a tropical creek, the Port Reitz, Mombasa, Kenya.
Tropical Zoology
2:123-138.
Publication
Season fluctuation in zooplankton abundance are described from six 24 hour series taken from the Likoni Ferry, using Clarke Bumpus net of 180 um mesh size. Two samples every 2 hours were taken at 2 months intervals from April 1985, to February 1986 inclusive. Salinities were consistently above 30%o and surface water temperature varied between 24.0 and 28.9°C. Fifty-one taxa of zooplanktonic organisms were recorded in the samples. The mean total zooplankton abundance was 236m-3. The density of zooplankton was highest during the 24 hour series of the North-East monsoon season. Actual mean abundance of plankton was relatively low during the 24 hour seires taken in South-East monsoon in April, June, August and October. Holoplanktonic forms dominated the fauna, averaging 71% of the total plankton, copepods numbered 69% of the total fauna. The most numerous taxa amongst holoplanktonic forms were (in order of abundance): copepods, chaetognaths and appendicularia. The most numerous amongst meroplanktonic forms were: molluscan larvae, fish eggs and brachyuran zoeae. The total zooplankton density for the night-time samples was higher than the day-time ones. KEYWORDS: zooplankton, tropical creek, Port Reitz, occurrence, season, day, night, Kenya.
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Diphyes Cuvier, 1817 (additional source)
Euconchoecia Müller, 1890 (additional source)
Oithona simplex Farran, 1913 represented as Oithona simplex simplex Farran, 1913 (additional source)
Pyrocypris Müller, 1890 accepted as Cypridina Milne Edwards, 1840 (basis of record)
Travisiopsis lanceolata Southern, 1910 (additional source)
Kenya for Euconchoecia Müller, 1890 
Kenya for Pyrocypris Müller, 1890 
Kenyan Exclusive Economic Zone for Acartia danae Giesbrecht, 1889 
Kenyan Exclusive Economic Zone for Acrocalanus longicornis Giesbrecht, 1888 
Kenyan Exclusive Economic Zone for Canthocalanus pauper (Giesbrecht, 1888) 
Kenyan Exclusive Economic Zone for Centropages orsinii Giesbrecht, 1889 
Kenyan Exclusive Economic Zone for Clausocalanus farrani Sewell, 1929 
Kenyan Exclusive Economic Zone for Copilia mirabilis Dana, 1849-1852 
Kenyan Exclusive Economic Zone for Corycaeus speciosus Dana, 1849-1852 
Kenyan Exclusive Economic Zone for Euchaeta marina (Prestandrea, 1833) 
Kenyan Exclusive Economic Zone for Euterpina acutifrons (Dana, 1848) 
Kenyan Exclusive Economic Zone for Evadne tergestina Claus, 1864 
Kenyan Exclusive Economic Zone for Liriope tetraphylla (Chamisso & Eysenhardt, 1821) 
Kenyan Exclusive Economic Zone for Macrosetella gracilis (Dana, 1848) 
Kenyan Exclusive Economic Zone for Microsetella rosea (Dana, 1847) 
Kenyan Exclusive Economic Zone for Oithona plumifera Baird, 1843 
Kenyan Exclusive Economic Zone for Oithona setigera Dana, 1853-1855 
Kenyan Exclusive Economic Zone for Oithona simplex Farran, 1913 
Kenyan Exclusive Economic Zone for Oncaea venusta Philippi, 1843 
Kenyan Exclusive Economic Zone for Paracalanus aculeatus Giesbrecht, 1888 
Kenyan Exclusive Economic Zone for Paracandacia simplex (Giesbrecht, 1889) 
Kenyan Exclusive Economic Zone for Sapphirina lactens Giesbrecht, 1893 
Kenyan Exclusive Economic Zone for Temora turbinata (Dana, 1849-1852) 
Kenyan Exclusive Economic Zone for Travisiopsis lanceolata Southern, 1910 
Kenyan Exclusive Economic Zone for Undinula vulgaris (Dana, 1849-1852) 
Kenyan Exclusive Economic Zone for Vanadis minuta Treadwell, 1906