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Plankton distribution and abundance in the Sundays River estuary, South Africa, with comments on potential feeding interactions
Jerling, H.L.; Wooldridge, T.H. (1995). Plankton distribution and abundance in the Sundays River estuary, South Africa, with comments on potential feeding interactions. S. Afr. J. Mar. Sci./S.-Afr. Tydskr. Seewet. 15: 169-184
In: South African Journal of Marine Science = Suid-Afrikaanse Tydskrif vir Seewetenskap. Marine & Coastal Management: Cape Town. ISSN 0257-7615, more
Peer reviewed article  

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Keywords
    Algae > Diatoms
    Aquatic communities > Plankton
    Aquatic communities > Plankton > Zooplankton
    Aquatic organisms > Estuarine organisms
    Behaviour > Feeding behaviour > Grazing
    Composition > Community composition
    Estuarine environment
    Interspecific relationships
    Intraspecific relationships
    Organic compounds > Carbohydrates > Glycosides > Pigments > Photosynthetic pigments > Chlorophylls
    Periodicity > Seasonality
    Protozoa [WoRMS]
    PSW, South Africa, Cape Prov., Sundays Estuary [Marine Regions]
    Marine/Coastal; Brackish water; Fresh water

Authors  Top 
  • Jerling, H.L.
  • Wooldridge, T.H., more

Abstract
    Three mysid and three calanoid copepod species dominated the mesozooplankton in the Sundays River estuary, South Africa. Mid estuary, there was considerable overlap in the spatial and temporal distribution of species. Mesozooplankton abundance was lowest during winter. Microzooplankton, consisting of ciliates, zooflagellates and rotifers, was most abundant in the middle of the estuary. Rotifer abundance was lowest in winter and autumn. Other microzooplankton showed no seasonal variation. Phytoplankton was dominated by micro- and nanoflagellates, dinoflagellates and euglenoids, but diatoms were very abundant after a flood. Chlorophyll a concentrations were greatest in the middle and upper estuary, but there they showed no seasonal fluctuations.

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