|CWR Presents : Inflow controls on the spatial distribution and composition of phytoplankton in Marina Reservoir, Singapore
Understanding the drivers of phytoplankton composition and abundance is important for the management of water quality in reservoirs.
In the Republic of Singapore, the construction of coastal barrages in recent years has seen several low-lying estuaries converted into shallow reservoirs to secure water supply. However, research on these types of systems has been limited to date.
Marina Reservoir became operational in 2008 following the completed construction of a barrage that separates the former Marina Estuary from the Singapore Strait. Subsequent to a two year adjustment phase during which saline water from the former estuary was flushed from the reservoir, the nutrient concentrations in this shallow reservoir stabilised and the downstream waters became dominated by nitrogen fixing cyanobacteria.
However, in the upstream regions of the reservoir, which are more influenced by inflow waters, the phytoplankton composition is dominated by green algae and diatoms. The CWR field team surveyed Marina reservoir in February 2012, which was a period of low inflow. Results from these measurements will be presented to demonstrate the relationship between inflows and short-term changes in phytoplankton composition and abundance.
In particular, by using fluorescent spectral data and principal component analysis (PCA) to measure phytoplankton composition at fine spatial scales, it will be shown that the distributions of different phytoplankton assemblages in the reservoir are closely related to transitions between inflow waters and reservoir waters.
PS* This seminar is free and open to the public & no RSVP required.
Blakers Lecture Room, Ground Floor, Mathematics Building, The University of Western Australia
: 6488 7565
Wed, 18 Sep 2013 16:00
Wed, 18 Sep 2013 17:00
Askale Abebe <[email protected]>
Thu, 29 Aug 2013 14:13
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