Study Table, pick one of the vital ecosystem services listed there, and investigate the reasons why it is placed where it is by the Millennium Ecosystem Assessment.
TABLE The Global Status of Ecosystem Services. Human use has degraded almost two-thirds of these identified services; 20% are mixed, meaning they are degraded in some areas and enhanced in others; and 17% have been enhanced by human use.
Ecosystem Services | Degraded | Mixed | Enhanced |
Provisioning (goods obtained from ecosystems) | Capture fisheries Wild foods Wood fuel Genetic resources Biochemicals Fresh water | Timber Fiber | Crops Livestock Aquaculture |
Regulating (services obtained from the regulation of ecosystem processes) | Air quality regulation Regional and local climate regulation Erosion regulation Water purification Pest regulation Pollination Natural hazard regulation | Water regulation (flood protection, aquifer recharge) Disease regulation | Carbon sequestration (trapping atmospheric carbon in trees, etc |
Cultural (nonmaterial benefits from ecosystems) | Spiritual and religious values Aesthetic values | Recreation and ecotourism |
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Source: Millennium Ecosystem Assessment, Ecosystems and Human Well-Being: Synthesis. Washington, DC: Island Press., 2005. | |||
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