Year 10 Geography Research Report

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Cronulla is a beachside suburb in southern Sydney, it is located 34.0574° S, 151.1522° E which is 26 kilometres south of the Sydney CBD (see figure 2). It is governed by the Sutherland Shire Council. Cronulla’s coastal environment is on the Kurnell Peninsula, which is made up of a tombolo. A tombolo is a sand spit connecting a rocky outcrop or island to the mainland. So this forms a barrier between Botany Bay and Bate Bay. The two areas of study visited were Wanda Beach and the Greenhills Beach development.
A healthy dune system contains a primary and secondary dune defined by the start of vegetation as you progress from the swash and berm. The vegetation helps stabilise the landform helping to protect it from erosion, it also helps the soil in the secondary dune to become more stable and erosion resistant. The decaying plant material creates humus which makes the soil more nutrient allowing greater plant diversity.
At Wanda Beach, the tall trees and scrubs act as a windbreaker which further protects the sand formation. According to the field work results collected using the anemometer (see figure 3), the Aeolian processes at the front and the top of the primary dune is where the wind speed is highest. So it is important to plant plants such as the hairy spinifex to stabilise the sand due to its expansive root system and its ability to survive low water conditions.

Management Strategies:
The Cronulla coastal environment
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