Nothing Essay

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Ecosystems at Risk Essay - Question 25 Ecosystems are systems through which incoming solar energy is captured and channeled through a hierarchy of life forms. Each ecosystem has its own characteristics that are determined by the biophysical interactions of the biosphere, lithosphere, atmosphere and hydrosphere. In the case of Cullendulla intertidal wetlands and Kosciuszko Alpine Area, humans play a role in maintaining or disturbing the dynamic equilibrium of any ecosystem. We can remove unwanted species, both plants and animals and other species are provided with a favourable, more suitable environment for their survival by human intervention. Ecosystems are constantly changing and developing in response to stress induced changes. Human stresses such as the damming of a river, the draining of a wetland or the cleaning of vast tracts of natural vegetation for agriculture are sudden and drastic changes that may result in loss of habitat and devastation of a species. There are a number of human induced stresses that are present in Cullendulla. Toxic storm water is a major problem and it is managed in cullendulla by diverting storm water drains away from the wetland. Humans can maximise the area of healthy, functioning intertidal wetlands by minimising their impacts and by developing management strategies that protect, and where possible rehabilitate these ecosystems at risk. There are many positive ways of trying to protect or rehabilitate intertidal wetlands. Education campaigns have helped to change public perceptions and foster public support for the wetlands. Management plans focus on the rehabilitation of the site and the removal of human-induced stresses. For example, with the removal of unnatural pests such as foxes and rabbits. Kosciuszko alpine area is an extremely fragile ecosystem as within the alpine area, each vegetation community poses it's

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