Temporal dynamics of marine zooplankton in the Gulf of Guinea Large Marine Ecosystem

Temporal dynamics of marine zooplankton in the Gulf of Guinea Large Marine Ecosystem Impact of climate change on long- term zooplankton biomass in the Gulf of Guinea upwelling region Format BackgroWuniadfe, G. [...] (University of Liverpool) of Ghana Conclusion & speculation(s) 4th Zooplankton Symposium, Hiroshima, JAPAN (May/June, 2007) Central Eastern Atlantic Highly productive system due to upwelling systems Fishery potential 7.8 million tons/year - (FAO) Gulf of Guinea Upwelling system (Cote d’Ivoire, Ghana; ~ new areas Benin, Nigeria) 4th Zooplankton Symposium, Hiroshima, JAPAN (May/June, 2007) Gulf of G. [...] Ghana, Cote d’Ivoire, Nigeria The zooplankton of the Gulf of Guinea (Bainbridge, 1972); Zooplankton in the upwelling zones of the African Atlantic littoral (Thiriot, 1977); Neritic zooplankton of the seasonal upwelling areas in the Gulf of Guinea (Binet, 1983); First CPR analysis (Wiafe, 2002) Long term monitoring Generally inconsistent Only MFRD, Ghana has 35 years data (1961 – 1995) BUT informat. [...] 4th Zooplankton Symposium, Hiroshima, JAPAN (May/June, 2007) Discussion Seasonal migration of Calanoides carinatus 4th Zooplankton Symposium, Hiroshima, JAPAN (May/June, 2007) Seasonal Community structure S292 S291 S191 MU192 S192 Temporal pattern in community structure (MDS plot). [...] S199 Major upwelling characterized by CPR data distinct community S297 S197 Possible consequence MU297 MU197 Warming waters will influence this intergrity MU299 4th Zooplankton Symposium, Hiroshima, JAPAN (May/June, 2007) Conclusion Description of long term biomass of zooplankton (1969 – 1992) High abundance during major upwelling; general decline in trend; pronounced for the upwelling season Prov.