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Project Plan – NSW DPI 代寫

         Project Plan – NSW DPI
    Investigation of the rate of spread and growth of the noxious alga Caulerpa taxifolia in south eastern Australian lakes and lagoons
                                     Liyan ZHANG 3363634        Waqas Ahmad 3282463
    Introduction and Brief Literature Search
    Project Plan – NSW DPI  代寫
    The green algae Caulerpa taxifolia is a strain on the natural environment it inhabits. The alga grows extremely rapidly, reproduces easily and can even survive on land for short periods of time. [3]
    These properties have aided it’s global dispersal from tropical waters in Australia’s North, around Europe and even some heavy colonisations in Californian waterways. Human impact is too at fault - the Caulerpa is commonly used in fish tanks, likely contributing to its spread [4].
    Although native to Northern Australia, Caulerpa (or “killer algae”) has caused much damage to marine ecosystems found in New South Wales [2].
    Modelling it’s growth using cellular automata is a useful way to predict the impact Caulerpa will have at any given point in time. A handful of models have been developed on the algae, including one around the Lake Conjola site in NSW.
    These models utilise the known properties of the weed to try and better understand what encourages it’s growth
    Aquatic pests, including Caulerpa are usually extremely difficult to eliminate once they have become established in the wild. It is also important to prevent noxious species such as Caulerpa from entering new waterways.
    Data was collected by the NSW fisheries in 2003 by field mapping known infestations of C. taxifolia when it was highly infectious. This was done in the summer of March 2003, March 2004 and again after winter decay in August 2003 and September 2004. Lynne McArthur et. al. [2]
    Once this data was collected and complied, it was sent to RMIT University where it was modelled into a Cellular Automata Model using Matlab, by Lynne McArthur, and subsequently emailed to us as a part of our project.
    This model was not used to accurately model the growth and spread of C. taxifolia but to get an indication of the drivers of growth and spread of the patterns of this weed. Primarily, Matlab will be used as our environmental analysis and reporting tool.
    As we are trying to analyse the attitudes and behaviours of such a temperamental biological sample, it will be beneficial to analyse indicators required for model improvement. This will include analysing the ways in which the model might be affected. These factors include the growth and spread of seagrass in regards to C. taxifolia, the effect of seasonal events such as wind, rain, hail, etc; the effect of season biomass fluctuations, Fragment recruitment from neighbouring cells, depth limitations on growth, anthropogenic influences on distribution.
    This model is designed to inform resource managers and government bodies of the most effective methods of eradication. [2]
     Project Plan – NSW DPI  代寫
    Aims and Research Questions
    The primary aim of this project is to investigate and analyse the seaweed Caulerpa taxifolia and create a suitable (CA) model for NSW DPI. Our aim is to develop an algorithm and results for a stylised model of Caulerpa taxifolia growth and spread in Lake Conjola. The model algorithm used information on prevailing weather conditions, seagrass distribution and some depth assumptions.
    Some research questions include:
    (1) What external factors will affect the growth and spread of Caulerpa taxifolia?
    (2) How will the modified CA model assist in helping the NSW DPI?
    (3) Where and how will the data be collected?
    (4) How reliable could the resource management actions be based on the results?
    (5) What the interaction with seagrasses and herbivores?
    (6) Given level of simplicity does simulation results could be used for practical prediction of the C.taxifolia biomass?
    (7) Asexual Reproduction: fragmentation and stolon extension
    .Project Plan – NSW DPI  代寫
    2008, Pergent et al, ‘Competition between the invasive macrophyte Caulerpa taxifolia and the seagrass Posidonia oceanica: contrasting strategies’,
    2013, Lynne C. McArthur, ‘Modelling the spread and growth of Caulerpa taxifolia in closed waterways in southern Australia using cellular automata’, School of Mathematical and Geospatial Sciences RMIT University
    1992, Guerriero, A., Meinesz, A., D'Ambrosio, M., & Pietra, F, ‘Isolation of Toxic and Potentially Toxic Sesqui-and Monoterpenes from the Tropical Green Seaweed Caulerpa taxifolia Which Has Invaded the Region of Cap Martin and Monaco’, Helvetica Chimica Acta, 75(3), 689-695.
    2011, NSW Department of Primary Industries, ‘Caulerpa Taxifolia’, viewed 10/04/13


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