Friday, 1 November 2013

Geography GCSE: Coral Reefs (St Lucia)


Saint Lucia is a sovereign island country in the eastern Caribbean sea on the border with the Atlantic ocean. One of the Windward Islands and follows common British law.

What value does the Coral Reef have for the people of St Lucia?

        Direct Coral Reef related tourism accounts for 11% of GDP (US$91.6 million in 2006).
        Locals benefit as they provide accommodation, diving equipment, guides etc.
        The diving value estimated US$4.9 million due to beauty/biodiversity (248 species of coral and fish).
        Reef protects island from wave pounding and storms acting as a natural barrier in Tropical Revolving Storm prone zone.
        Goods include fishing (100 full time fisherman); Groupers and Red Snappers comprise fish stock but the Cobster accounts for 40% of the total value of fishing. Coral Reef associated fisheries are between US$437,000-600,000.
        Coral mined as it is needed for cement or sold to tourists as a souvenir.

Threats to the coastline:

        Ocean acidification: as more CO2 is let out into the atmosphere much of it is absorbed in the oceans. This stops the formation of coral reefs due the decrease in ph. It also weakens the existing coral making them more susceptible to damage.
        TRS common and coral is damaged by the storm and 3% of living coral was lost  between 1997-98.
        Siltation due to agriculture/mining decreasing visibility (light needed for photosynthesis).
        Ocean warming (due to global warming) and coral bleaching: ocean warming causes the algae necessary for 80% of the corals energy to be expelled. Therefore the coral dies and is bleached.
        Water pollution: waste causes an increase of nitrogen in the water causing algae to grow on the surface of the water blocking the sunlight. This therefore stops the coral photosynthesising causing it to die (40% of St Lucia reefs rated as threatened by marine based pollution).
        Careless tourism: This is where tourists carelessly go boating, diving, snorkeling and fishing which can also damage coral reefs. Coral reefs can also be damaged by anchors being dropped on them. (90 km2 of the St Lucia reefs are at risk due to human activity.)
        Coral mining: to make cement, road blocks and as souvenirs.

Management of Coastline:

        Soufriere Marine Management Association (SMMA) represents all the users of the coast and therefore has provided areas for the use of different groups e.g. marine reserves, fishing areas, recreational, yacht moorings and multi-use areas. SMMA uses wardens to oversee the scheme and make sure no rules are being broken.
        Scheme is sustainable as funded through visitor fees and permits not taxes (US$48,700 in total).
        SMMA carries out water quality and ecosystem health tests, and a study has shown that fish stocks overall have tripled and in fishing areas have doubled.
        The scheme has been extremely successful especially since the fisherman in 1995 opposed the zoning by 2005 they were fully supportive of the scheme.

Who are the users of the coastline?

The different users hold contrasting views to one another to do with their interaction with coral.
        Fishermen who want to protect own jobs and livelihoods.
        Researchers who want to study the coral reefs.
        Nature Preservers who want to protect coral reefs.
        Locals who believe that they should have priority over tourists.
        Tourists and people who make a living from tourism (hotels, activity organisers etc).
        Divers who want to enjoy marine biodiversity for pleasure or research.
        Yachtsmen (private owners) who want to enjoy sea for leisure)




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