Essex Marshes Casestudy 4.5 / 5 based on 4 ratings ? GeographyCase studiesCoastal environmentsASAQA Created by: SophieCreated on: 15-01-14 19:50 Key Facts Essex has one of the lowest-lying coastal landscapes in Britain, which is mostly saltmarshes. dddassssss Sea-levels rising make defence and conservation of the coastline urgent. dddssssssaaaddd This is because saltmarshes support wildlife, but they can act as buffer and protect the inland area. 1 of 3 Problems Coastal realignment allows for managed retreat and surrenders parts of the coast, so it will act as a natural buffer, however this is controversial. cdcdcdcd It is controversial because farming land will be lost to the sea, which was once protected by the old sea wall. ffddfsdss Along the Essex coast, the sea level is rising 6mm per year. djdkdkd It has been estimated that 40% of Essex saltmarshes has been lost to the sea over the past 25 years. 2 of 3 Solutions One solution being employed in Essex is managed coastal retreat, this is a form of soft engineering. dkdkdkdkd The first experiment for managed retreat is at Northey Island in the upper Blackwater Estuary. dkdkdkdkdk New sea defences have been built 75 metres inland from the previously damaged sea wall. fjfjfjfjfjf These defences were built in 1991, this cost £22,000, this has allowed more saltmarshes to develop further inland. kdkdkd This scheme was better because repairing the old sea wall would have cost between £30,000 and £55,000. 3 of 3
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