Interactions among invading species: transient hybridisation and rates of replacement

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Habitats are often invaded sequentially by multiple species. Interactions between these invaders can potentially alter their rates of spread and eventual distributions. This project will combine experimental research and modelling to test specific hypotheses about the processes occurring as one species arrives in a region already containing a close relative and proceeds to replace it. It will use two sea rockets (Cakile sp.) currently invading Australia’s coastline is its focus. By determining the importance of such species interactions, the research will contribute to the development of better estimates of invasive species impacts, thereby improving decisions on their management.