Ask the Experts
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Ask the Experts Dr Anjana K. Ford answers questions on the Jurassic Coast 1. What is the Jurassic coast and why is it called this? The Dorset and East Devon Coast World Heritage Site which is more popularly known as the ‘Jurassic Coast’ is England’s first and only natural geological World Heritage Site. The Site is a 95 mile stretch of the south coast from Exmouth in East Devon to Studland in Dorset. The name “Jurassic Coast” comes from the best known of the geological periods found within it, but in fact the Site includes rocks from the Triassic, Jurassic and Cretaceous periods. The different rocks tell a fascinating story from ancient deserts to tropical seas throughout the Mesozoic era, between 250 million and 65 million years ago. 2. What is so special about the Jurassic Coast – why is it worthy of World heritage site status? The Jurassic Coast is the only place on Earth where 185 million years of the Earth’s history are sequentially exposed in dramatic cliffs, secluded coves, coastal stacks and barrier beaches. The ‘tilt’ of the rocks creates a unique ‘walk through time’ from 250 million to 65 million years ago, through the Triassic, Jurassic and Cretaceous periods as you walk eastwards along the Site. It was awarded World Heritage Site status in December 2001 by UNESCO (United Nations Educational, Scientific and Cultural Organisation) because of its outstanding Earth Science interest. 3. What makes a World Heritage Site (what are the criteria)? UNESCO (United Nations Education, Scientific and Cultural Organisation) is responsible for managing the World Heritage Programme. Every year the World Heritage Committee meets to discuss new applications from countries applying for their special places to receive World Heritage Site status. There are 10 Criteria against which new applications are judged (of which 4 are specific for Natural sites). These criteria range from showcasing exceptional architecture that illustrates a significant stage in human history to areas of exceptional natural beauty. For new applications, the proposing country must demonstrate that their Ask the Experts property contains an element of cultural and/or natural heritage that has been deemed to be of exceptional value to present and future generations of all humanity. In addition the Committee also reviews the state of conservation of World Heritage Sites on the UNESCO Danger list and decides whether to allocate funds to assist with conservation efforts. 4. What impact has the World Heritage Site status had on the Jurassic Coast? The biggest single impact of the WHS status has been the emergence of a clear identity for a stretch of coastline that previously had no unifying sense of identity. In addition, prior to the emergence of the ‘Jurassic Coast’ brand, the coastline was marketed under a variety of labels. Evidence now suggests that the ‘Jurassic Coast World Heritage Site’ is now emerging as a national brand. The WHS status has also been a stimulus for developing better services for local people and visitors, through the regeneration of existing visitor centres, the development of a Jurassic Coast Arts Programme and enhanced educational offers for local schools. Since 2001, the Jurassic Coast has managed a partnership through a variety of stakeholders across Dorset and East Devon to deliver sustainable tourism initiatives such as ‘Jurassic Coast’ branded buses, trains and enhanced access to the South West Coast Path. 5. What interesting geographical features can I find along the Jurassic coast? The Jurassic Coast has some of the most spectacular and varied coastal geomorphological features anywhere in the world. In East Devon, the coastline is characterised by steep cliffs composed of Triassic red sandstone. At Budleigh Salterton, the shingle beach is famous for its red Budleigh pebbles which fall out of the gravel cliffs there. Further along the coast at Ladram Bay, the cliffs have been eroded into a series of spectacular red sandstone stacks which are home to a variety of nesting sea birds. Landslips are commonly seen along the coast, but the most dramatic slips and cliff falls are seen in the area of coastline between Lyme Regis and Charmouth. The weak beds of Jurassic clays and shales give rise to one of the largest coastal landslides in Europe called Black Ven. Ask the Experts Further eastwards, Chesil Beach is regarded as one of the finest barrier beaches in the world and it stretches for 29km (18 miles) from Burton Bradstock to Portland. Behind the beach itself is The Fleet which is an intertidal lagoon internationally recognised as RAMSAR site for its ecology and biodiversity. The impact of coastal erosion of geology can be seen to great effect at Lulworth Cove. Here, waves have cut through the resistant Portland Stone and eroded into the softer sands and clays behind to form a perfect horseshoe-shaped cove. Durdle Door, a natural coastal arch carved out of Portland Limestone can also been seen here. At the eastern end of the Jurassic Coast towards Studland Bay, the chalk cliffs have been dramatically eroded into a series of stacks and pinnacles called Old Harry Rocks. 6. What are the main threats affecting this coastline? As a World Heritage Site, the Jurassic Coast is internationally recognised for its rocks, fossils and landforms. The boundary of the World Heritage Site begins at the top of the cliffs and continues down to the low water mark on the beach. In addition areas of the coastline where the natural cliffs are not visible (such as esplanades) are not part of the World Heritage Site designation. For the geological and geomorphological features to be maintained, natural processes such as erosion must be allowed to continue and shape the cliffs and beaches. The main threat to the continuation of these natural processes is the construction of coastal defences such as sea walls, rock armour and gabions. These engineering structures disrupt the natural coastal processes of erosion and deposition and serve to stabilise the cliffs, promoting vegetation growth which then obscures the geology and fossils. If this were to happen along the coast, the World Heritage Site status would be threatened. Other threats to the coastline include marine and beach litter and also shipping traffic. In December 2006, the container ship MSC Napoli became grounded on Branscombe Beach spilling over 100 containers containing cars, motorbikes, nappies, biscuits, dog food and shampoo onto the beaches. The clean up operation took 2 Ask the Experts years and litter from buried containers are still being washed up on the beaches of the Jurassic Coast today. 7. The coastline stretches over two counties and several local council areas. Does this affect how the coast is managed? Managing the Jurassic Coast World Heritage Site, is not a straightforward task. The Site is a long thin strip of cliffs and beaches, owned by many different landowners, and protected through a variety of UK conservation and planning laws. The Site is also a very popular destination for tourists and local residents alike, and the ten towns that provide the gateways to the Site all receive large numbers of visitors throughout the year. Moreover, management is not just about conservation or protection. The World Heritage Convention talks of making World Heritage a ‘function in the life of the community’, and of promoting awareness and understanding of World Heritage, and the heritage of each specific Site. The approach taken for the Jurassic Coast is one that is "firmly based in a locally led partnership which coordinates activity, facilitating partners to achieve mutually supportive aims, and providing specialist advice where necessary. The partnership is led by the local authorities, particularly Dorset and Devon county councils, but also comprises local, national and international agencies, as well as technical specialists. Local management means that not only are local issues able to be resolved e!ectively, but that the voice of the local community can be heard and play a part in the management of the Site. 8. What strategies are in place to manage the coastline? The Dorset and East Devon Coast World Heritage Site Management Plan is the key document that sets out the vision, aims and policies for how the site should be managed. The Plan was put together after extensive consultation with stakeholders and the general public, a review of progress against the last Plan (2003 -2008), and from an analysis of the key issues affecting the Site; such as coastal erosion, climate change, fossil collecting and visitor management. Embedded within the Plan are other key strategies that set out how Science and Conservation, Visitor Management, Education and the Arts should be delivered. It is important to know that World Heritage Site status is not statutory in UK planning law. This means that although the status can influence planning decisions like where to site a coastal defence, it cannot be used exclusively to refuse planning decisions. However, the World Heritage Site is covered in its entirety by one or more conservation designations, made either for geological, wildlife or landscape value. These include designations set out under international and UK law, such as Sites of Special Scientific Interest (SSSIs), Areas of Outstanding Natural Beauty (AONBs), National Nature Reserve (NNR), Special Areas of Ask the Experts Conservation (SACs), Special Protection Areas (SPAs) and others that have no legal statute, but carry varying degrees of weight in the planning system. 9. Will the proposed wind farm off the coast have any detrimental effect on the Jurassic coast? The proposed Wind Farm will have no detrimental effect on the "Outstanding Universal Value" of the Jurassic Coast World Heritage Site, because it is considered globally important due to the geology, fossils and coastal landforms, none of which would be in any way affected by an offshore wind farm.