The Occurrence of Zooplankton off Tema During The Period 1969 – 1992
Displacement volumes of zooplankton samples collected with the ICITA net at four stations along an oceanographic transect off Tema at approximately weekly intervals over the period, 1969 – 1992, are analysed. The pattern of inter-annual variations in zooplankton biomass over the entire 24-year period is the same though absolute values vary monthly and yearly. Underlying the fluctuations is a general trend in decline in zooplankton abundance.