Effects of global climate change on marine phytoplankton: interactions between UV radiation and elevated atmospheric carbon dioxide levels. Global climate change is one of the most significant ecological challenges for the 21st Century. Phytoplankton contribute over 45% of the planet's annual net primary production and form the basis of most aquatic food chains. Conversely, some phytoplankton are toxic and cause problems in marine and fresh waters. Climate change can potentially disrupt aquatic ....Effects of global climate change on marine phytoplankton: interactions between UV radiation and elevated atmospheric carbon dioxide levels. Global climate change is one of the most significant ecological challenges for the 21st Century. Phytoplankton contribute over 45% of the planet's annual net primary production and form the basis of most aquatic food chains. Conversely, some phytoplankton are toxic and cause problems in marine and fresh waters. Climate change can potentially disrupt aquatic foodchains by its impact on primary production by phytoplankton or stimulating growth of potentially toxic forms. Our project will investigate the combined impact of increasing carbon dioxide and ultraviolet light on phytoplankton and thereby help climate modellers assess the impact of climate change on aquatic ecosystems and particularly on the nation's and the world's fisheries.Read moreRead less
Effects of environmental factors on ecophysiological performance in the toxic cyanobacterium Nodularia. Nodularia is a toxic cyanobacterium that causes problem blooms in Australian waters and worldwide. The effects of environmental conditions on physiological processes in Nodularia are poorly understood and information on the effects on macromolecular synthesis and photosynthesis in Nodularia is limited. This project is of fundamental biological importance, making a major contribution to under ....Effects of environmental factors on ecophysiological performance in the toxic cyanobacterium Nodularia. Nodularia is a toxic cyanobacterium that causes problem blooms in Australian waters and worldwide. The effects of environmental conditions on physiological processes in Nodularia are poorly understood and information on the effects on macromolecular synthesis and photosynthesis in Nodularia is limited. This project is of fundamental biological importance, making a major contribution to understanding the impacts of environmental conditions on the physiological performance and ecology of Nodularia. The research has significance, both nationally and internationally, for the prediction of algal blooms in coastal and estuarine ecosystems, and will increase our knowledge of the factors controlling growth and toxicity of Nodularia worldwide. Read moreRead less
Characterisation of Bioadhesives from Marine diatoms. Biofouling occurs at great expense to governments and industry, adding up to 60% annually to the cost of propulsive fuel consumption in shipping. Diatoms include the most common algal biofoulers of natural and artificial surfaces (e.g. ship hulls). The structure of diatom adhesives will be elucidated in order to determine the molecular basis of their adhesive properties. As diatoms are capable of reversible adhesion, an understanding of th ....Characterisation of Bioadhesives from Marine diatoms. Biofouling occurs at great expense to governments and industry, adding up to 60% annually to the cost of propulsive fuel consumption in shipping. Diatoms include the most common algal biofoulers of natural and artificial surfaces (e.g. ship hulls). The structure of diatom adhesives will be elucidated in order to determine the molecular basis of their adhesive properties. As diatoms are capable of reversible adhesion, an understanding of this mechanism may enable development of strategies to counter adhesion in antifouling products (e.g. paints). This knowledge will contribute to development of new adhesives or strategies to modify and/or prevent adhesion.Read moreRead less