Bio36_07_Restoration - 1 2 1 2 Overview Ch. 7: Use &...

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1 Overview – Ecosystem Capital – Conservation, Preservation, Restoration – Protected Lands Ecosystem Capital • Land ecosystems – Croplands – Wetlands • Oceanic ecosystems – Coral reefs – Open ocean • Natural goods – Food, fuel, etc. • Natural services – E.g., climate regulation Ecosystem Capital • Natural resources vs. ecosystem capital – Economic value vs. services in natural state • Valuing – Private vs. public lands •Sustainable exploitation maintains services – Domesticated nature •Grasslands & forests b – Future pressures Living Beyond Our Means: Natural Assets and Human Well-Being • Conservation vs. preservation – Regulate use vs. ensure continuity • Human use of ecosystems – All have potential for sustainable or unsustainable use • Consumptive use •90% of world’s poorest • Productive use • Property rights (tenure) – Private ownership – Communal ownership – State ownership (regulated use) – Open access Human Use of Ecosystems • Maximum sustainable yield – Optimal population •½ carrying capcity – Precautionary principle 1 2 1 2 3 4 5 1 2 6 1
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2 • Using the commons – Tragedy of the commons •Open access, no regulation – Limiting freedom •Private ownership •Regulate access – Public policy •Principles Public Policy Principles Ecosystem Restoration • Everglades restoration – Water controlled •Diverted for sugar cane – Water release – Land buyout – Task force goals •Correct water flow • Pending restorations – California Bay Delta – Chesapeake Bay – Platte River Basin – Mississippi Delta – Galápagos Islands Ecosystems under Pressure • Forest ecosystems
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Bio36_07_Restoration - 1 2 1 2 Overview Ch. 7: Use &...

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