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Cindy Dasilva

Dynamics of Picoplankton and the importance of the photosynthetic eukaryotic component in the North Atlantic Ocean

Cindy Dasilva
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I studied biology in Laval University and moved to Nova Scotia on CCGS Hudson for sampling. I'm interested by the relation between diversity of picophytoplankton and climate changes.

Connie Lovejoy, W.K.W. Li

Oceanography, Laval University


Marine Biodiversity, MB-10: Microbial diversity and functions

Marine picoplankton (cells <3um) contribute significantly to the biomass and primary productivity in all aquatic environments and play an important role in global mineral cycles. This community structure can be influenced by shifts in circulation patterns and changing hydrographic conditions. Our study area, the Scotian Shelf(Nova Scotia) is a region where different water masses meet and a range of conditions may be encountered over relatively short geographical distances. This thesis focus on the photosynthetic picoeukaryotes main responsible for primary production and to investigate the taxonomy diversity in relation to the physical properties of the water column in the goal to predict changes in primary production (base of the food web) according to climate changes.

The specific project/thesis aims project are:

  1. Seasonal variations of the picoplankton communities of the North Atlantic Ocean
  2. Composition and genetic diversity of picoeukaryotes as revealed by 454 pyrosequencing
  3. Activity of photosynthetic picoeukaryotes as revealed by psbA analyses






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