Bio36_08_HumanPop - 1 2 1 2 Overview Ch. 8: The Human...

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1 Overview • Ch. 8: The Human Population – Human population ecology – Consequences of human population growth – Future populations Human Population Ecology • Demography – Information about human populations – Global population • Carrying capacity (K) with innovations – Depends on standard of living – Maybe 7.7 billion? •Expected to be greatly exceeded by 2050 r- or K- strategists? – Exponential growth (r-) – High parental care & late reproduction (K-) Human Population History • Neolithic Revolution – Agriculture b • Industrial Revolution – Powered by fossil fuels • Medical Revolution – Vaccinations, sanitation, antibiotics ↓↓ mortality •Exponential growth • The Green Revolution – Industrialized agriculture crop yields •Chemical pesticides, irrigation, fertilizers – Costs: ground water, soil, pest resistance • An environmental revolution? – Efficient technologies, urban planning, policies Development of Nations • World Bank economic categories – High-income •Highly developed, industrialized countries
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Bio36_08_HumanPop - 1 2 1 2 Overview Ch. 8: The Human...

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