Marine Phytoplankton
Marine phytoplankton are microscopic photosynthesizing organisms with poor locomotors ability, which can either be autotrophic or holotrophic (Chandy et al. 1991). They have an important role in marine ecosystems (Fu et al. 2009) since they are at the base of food chains (Gameiro et al. 2007) and they are the primary producers in the seas (Ananthan et al. 2008). Secondary and tertiary consumers are dependent on phytoplankton as a source of food and energy supply (Chandy et al. 1991). The productivity of phytoplankton, especially diatoms, determines the fertility of the sea and 95% of total production in marine environment comes from phytoplankton production (Sithik et al. 2009). Their role as bio-indicators is crucial since they can detect …show more content…
Sampling was done only in March and results could differ at different periods of the year. Seasonal variation and the effect of tides on phytoplankton were not documented and this would have provided a more comprehensive set of data on variation in composition and distribution of phytoplankton in the lagoonal waters. In addition, the effects of environmental factors, such heavy rainfall, on phytoplankton have yet to be thoroughly conducted in the Mauritian waters. All these may provide important information on the occurrence and behaviour of phytoplankton, including micro-algal blooms, towards environmental factors. These data can ultimately be used to predict the impact of environmental changes on phytoplankton and thus on the marine ecosystem as a whole since alteration in the population dynamic of phytoplankton may result in the collapse of the whole ecosystem. Also, the use of conversion of bio-volume to biomass is another method of quantifying phytoplankton that requires future attention. Furthermore, the current study has focused on identification of phytoplankton based on morphological features but genetic analysis using recent molecular tools may reveal higher diversity and even new species. Thus, these factors can be taken into consideration in future studies. If we have to thoroughly understand phytoplankton dynamics in the coastal waters around Mauritius Island, studies on the above limitations are
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