Zooplankton Diversity in the Bay of Tabounssou: The Case of Faban Estuary, Guinea
On the Guinean coast, about 218 planktonic species are encountered among which, 184 species of zooplankton belonging to 60 families have been identified and copepods alone represent 63%. In the Faban estuary, fish larvae are the only group generally exploited. Fishing is carried out by men using the hawk net with small meshes. Women are the most involved in this activity, they ensure the processing and marketing of the products.
A total of twenty-seven (27) zooplankton and water samples were collected and analyzed. The various field observations and laboratory analyses revealed 21 taxa, fourteen (14) of which belonged to the Crustacean phylum, two (2) to the Chaetognathes phylum, one (1) to the Cnidaria phylum and four (4) to the Vertebrate phylum. In terms of abundance, copepods are the most represented (57%) followed by Zoes (20%) and jellyfish (10%). The zooplankton population is unevenly distributed across the stations and this distribution is governed by environmental parameters.
The analysis of water samples taken has identified variations in certain environmental parameters. In contrast to salinity, which averaged 14.23 g/l, temperature and turbidity decreased from upstream to downstream, with averages of 26.86°C and 33.47 NTU respectively, while the highest values for pH (7.92) and dissolved oxygen (6.71) were observed in September at Stations 2 and 3, respectively.
Keywords: Zooplankton Diversity, Bay of Tabounssou, environmental parameters, pH, dissolved oxygen
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