Browsing by Author "Peter, Nyamisi"
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Coastal upwelling and seasonal variation in phytoplankton biomass in the Pemba Channel
Kyewalyanga, Margareth S.; Peter, Nyamisi; Semba, Masumbuko; Mahongo, Shigalla B. (African Journals Online, 2021-02-11)This study was conducted in the Pemba Channel off Tanga Region in northern Tanzania to investigate physical and chemical factors that drive changes in phytoplankton biomass. Three transects off Mwaboza, Vyeru and Sahare ... -
The decline in phytoplankton biomass and prawn catches in the Rufiji-Mafia Channel, Tanzania
Semba, Masumbuko; Kimirei, Ismael; Kyewalyanga, Margareth; Peter, Nyamisi; Brendonck, Luc; Somers, Ben (African Journals Online, 2016-11-27)The world’s oceans have seen significant declines in phytoplankton-the primary food source in the marine environment. This decline in primary producers is likely to impact the food chain and functions of most coastal and ... -
The influence of physical-chemical variables on the spatial and seasonal variation of Chlorophyll-a in coastal waters of Unguja, Zanzibar, Tanzania
Peter, Nyamisi; Semba, Masumbuko; Lugomela, Charles; Kyewalyanga, Margareth S. (African Journals Online, 2018-12-11)Chlorophyll-a (Chl-a) concentrations were measured at four sites around Unguja, Zanzibar during the northeast (NE) and southeast (SE) monsoon seasons. Data for Chl-a, nitrate, phosphate, ammonia, dissolved ... -
Seasonal variability of vertical patterns in chlorophyll-a fluorescence in the coastal waters off Kimbiji, Tanzania
Peter, Nyamisi; Semba, Masumbuko; Lugomela, Charles; Kyewalyanga, Margareth (Western Indian Ocean Journal of Marine Science, 2021-09-24)A study on the vertical pattern of chlorophyll-a (Chl-a) fluorescence was undertaken in the Mafia Channel off Kimbiji, Tanzania. Data was collected during the Southeast Monsoon (SEM) and Northeast Monsoon (NEM) seasons. ...