Presentation on theme: "Edexcel Geography Unit 3: Contested Planet Biodiversity Under"— Presentation transcript:
Edexcel Geography Unit 3: Contested Planet Biodiversity Under
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Valuing Ecosystems: How can you put a value on a ecosystem? Understanding the value and importance of ecosystems in terms of biodiversity and ecological resources. Examining the economic, cultural and environmental value of ecosystems
The Value of Ecosystems
Ecosystem Value Card Sort Look at the cards you have and decide if they fit in the ecological, economic or cultural / aesthetic column. Then stick them down for you to keep. These highlight the value of any ecosystem.
Ecosystem Services Ecosystem Services are the benefits that people get from ecosystems. They can be classified into 4 groups. These 4 main services have a huge impact on the well being of the people who live in these areas
Relationship between ecosystem services and wellbeing These 4 main services have a huge impact on the well being of the people who live in these areas as your hand out shows; Supporting Services Service that are necessary for the production of all other ecosystem services. Their impacts on people are indirect, or occur over a very long time. They include soil formation, photosynthesis, nutrient cycling etc. Regulating Services These are the benefits obtained from the regulation of ecosystems processes, e.g. air quality, climate, water etc. Cultural services These are the non-material benefits that people obtain from ecosystems e.g. knowledge, recreation, ecotourism, cultural heritage, spiritual and religious values Provisioning Services (goods) These are the products obtained from ecosystems, including things like food, fuel, fresh water medicines etc.
Case study 1: Daintree Rainforest (p109 Parrot)
The Daintree and Ecosystem Services 1/5 Carbon Sequestration Trees absorb carbon dioxide and give out oxygen, thus removing greenhouse gases from the air. The carbon dioxide is stored as biomass to help regulate the climate and reduce pollution
The Daintree and Ecosystem Services 2/5 Medicine 25% of drugs include products that come from rainforests. TRF have provided chemicals used to treat diabetes, malaria, heart conditions, rheumatism and arthritis. In the Daintree plants have been identified as having anti-cancer properties
The Daintree and Ecosystem Services 3. Tourism The Daintree attracts nearly half a million visitors a year. Visitors come for the scenery- coast, forest and mountains- the biodiversity and to visit the Great Barrier Reef. Daintree, Eco-Lodge The Skyrail takes tourists from nearby Cairns into the Daintree Rainforest
The Daintree and Ecosystem Services 4. People of the Rainforest Rainforest aboriginal people are the original owners of Wet Tropical rainforests. To them, the rainforest is a series of complex ‘living’ cultural landscapes. This means that the natural features of the rainforest are interwoven with people’s religion, spirituality, economic use (food and tools) and social and moral organisation.
The Daintree and Ecosystem Services 5. Logging The commercial timber industry began in the Daintree in the 1930s. During the 1980s, the Daintree rainforest was at the centre of arguments between conservationists and the timber industry. The conservationists argued the logging was unsustainable.
Case Study 2: Coral Reefs Watch the videos here about coral reefshere reefs Read ‘The Value of Coral Reefs’ p in the text book and then make notes on its different values.