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phytoplankton

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    Biological observation data from plankton surveys around New Zealand and the south western Pacific. This dataset records all biological specimens collected during plankton sampling including fish, larvae, and eggs. Note that this dataset does not include data from Constant Plankton Recorders.

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    Water column monitoring at the end of Stage 1 for mussel farm MPE921 (Site 8572) in April and May 2011 estimated phytoplankton concentrations from fluorescence and chlorophyll a measurements.

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    NIWA was contracted by Property and Land Management Services (PALMS) LTD to assess phytoplankton depletion due to the extension of marine farms 8431, 8432 and 8433 in East Bay, Port Underwood. This was achieved by running a hydrodynamic model over a period of 100 days (11 April to 20 July 2005) and was validated by the associated ADCP data. Results revealed that the overall depletion footprint was very similar to the existing-farms case, which was expected given the modest increase in the total effective number of mussels from the extension.