BIOL 111 Study Guide - Final Guide: Malaria, Biocapacity, Ecosystem Services

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Document Summary

Millennium ecosystem assessment (called for by the un in 2000) findings: ecosystem changes in the last 50 years. Humans have changed ecosystems more rapidly than in any other period of time. This has resulted in irreversible loss in biodiversity on earth: gains and losses from ecosystem changes. Gain: economic development (prices declined, population and use of resources doubled, etc). Loss: 60% of ecosystem services are degraded (fresh water, pollination, wood fuel, etc). Loss: increased nonlinear change (eg, atlantic cod stocks depleted and never recovered). Loss: poverty (low income, water scarcity, no sanitation, malnutrition, etc). Loss: dryland is 41% of earth (90% in developing countries), & 2 billion people inhabit them: reversing ecosystem degradation: the challenge can be partially met.