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12 Cards in this Set
- Front
- Back
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Ecosystem services |
The benefits which people obtain from ecosystems |
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IPCC |
Intergovernmental panel of climate change |
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Four broad categories |
Provisioning Regulating Supporting Cultural |
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Provisioning services |
Food Fresh water Fuelwood Fibre Biochemicals Genetic resources |
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Regulating services |
Climate regulation Disease regulation Water regulation Water purification Pollination |
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Cultural services |
Spiritual and religious Recreation and ecotourism Aesthetic Inspirational Educational Sense of place Cultural heritage |
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Supporting services |
Soil formation Nutrient cycling Primary production |
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Trophic structure - two categories |
Bottom-up control Top-down control |
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Bottom Up Control |
Emphasises the energy inputs into the primary producers and the subsequent efficiency of energy transfer between trophic levels in determining the biomass accumulation at each trophic level |
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Top-down control |
Emphasises the importance of predation in influencing patterns of biomass accumulation at different trophic levels |
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Trophic cascade |
Top-down control where the trophic structure is influenced by the removal of a top predator (a third or fourth level consumer) |
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Trophic cascades reason |
Occur when predators limit the density of their prey and thereby enhance survival of the next lower trophic level |
