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Nitrogen uptake by phytoplankton in the Huon Estuary : with special reference to the physiology of the toxic dinoflagellate Gymnodinium catenatum

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Armstrong, Paul Benjamin (2010) Nitrogen uptake by phytoplankton in the Huon Estuary : with special reference to the physiology of the toxic dinoflagellate Gymnodinium catenatum. Research Master thesis, University of Tasmania.

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Abstract

The Huon Estuary is a micro-tidal estuary in south-east Tasmania that is an important
area for salmon aquaculture. In 2008 the salmon aquaculture industry in Australia is
worth $260M (AUD) per year. Salmon aquaculture began in the Huon Estuary in the
1980's and production has since increased significantly. The Huon Estuary is
nitrogen (N) limited and salmon farming is a significant input of N to this ecosystem.
Both industry and government regulators are alert to the potential for eutrophication
and increased harmful algal blooms if the assimilative capacity for N of the estuary is
exceeded. As part of a larger project on the ecology of the Huon Estuary, this PhD
research has two main objectives; firstly to determine whether phytoplankton in the
Huon Estuary are using nitrogen that had, primarily, an oceanic source (e.g. nitrate)
or was more locally supplied or regenerated (e.g. ammonium and urea) and secondly
to examine the physiology of G. catenatum a toxic dinoflagellate that dominates the
summer and autumn Huon Estuary phytoplankton biomass in many years.

Item Type: Thesis (Research Master)
Keywords: Toxic marine algae, Algal blooms, Dinoflagellate blooms, Salmon industry
Copyright Holders: The Author
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Copyright 2010 the Author - The University is continuing to endeavour to trace the copyright
owner(s) and in the meantime this item has been reproduced here in good faith. We
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Additional Information:

Available for use in the Library but NOT for copying until November 2012. After that date, available for use in the Library and copying in accordance with the Copyright Act 1968, as amended. Thesis (MAppScAqua)--University of Tasmania, 2010. Includes bibliographical references. 1. Introduction -- 2. Nitrogen uptake by phytoplankton in the Huon Estuary, south-east Tasmania, Australia -- 3. Effect of temperature and irradiance on the growth and biochemical composition of the toxic dinoflagellate Gymnodinium catenatum from south-east Tasmania, Australia -- 4. Nitrogen preference and uptake by Gymnodinium catenatum in culture -- 5. Nitrogen uptake during a Gymnodinium catenatum bloom at Southpost, south-east Tasmania, Australia -- 6. Summary

Date Deposited: 25 Nov 2014 00:59
Last Modified: 07 Jun 2016 05:04
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