L27 last lecture - BILD 3 Woodruff last lecture 1 Human...

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Unformatted text preview: BILD 3 July 30, 2010 Woodruff: last lecture 1 Human species HUMAN ATTRIBUTES Self-awareness – consciousness Biophilia Foresight Tool development Language Culture Bipedalism Hairlessness Paternal & parental care Neoteny Kin selection & nepotism Concealed ovulation Delusion Systems of behavioral codes (laws) Socially imposed monogamy (marriage) Intergroup aggression (war) Intergroup competition (play) Ancestor worship (religion) Polities of millions of families (nationalism, patriotism) LE 52-22 8000 B.C. Human population (billions) 6 5 4 3 2 1 0 4000 B.C. 3000 B.C. 2000 B.C. 1000 B.C. The Plague 0 1000 A.D. 2000 A.D. Los Angeles: 1900: 100,000 2006: 4,000,000 145 MILLION BIRTHS/YR 86 MILLION NET NEW HUMANS/YR 217,000 PER DAY 9,000 PER HOUR 16 8 1 BILLIONS 200,000 5000 BC 1 AD 2007 6 10 14 N MAX = 44B (Roger Revelle) = 60B (UNFAO) Where do you want it to level off? ECOLOGICAL BASIS OF REVOLUTIONARY CHANGE OVERSHOOT + DRAWDOWN CRASH or STABILIZATION ? BILD 3 July 30, 2010 Woodruff: last lecture 2 Living the ecological lie: ghost acreage supports an unsustainable lifestyle One species has irrupted on the planet A species that seeks to control nature The roots of the biodiversity and environmental crises lie in a traditional approach to nature called The Technological Fix Fallacy based on the Cornocopia Premise and the Cowboy Economy THIS SITUATION RESULTS FROM THE BELIEF IN THE CORNUCOPIA PARADIGM: • MAN WAS APART FROM NATURE • RESOURCES WERE INFINITE • MAN (NOT NATURE) KNOWS BEST • YOU CAN THROW THINGS AWAY • YOU CAN GET SOMETHING FOR NOTHING WHAT IS THE ECOLOGICAL FOOTPRINT OF HUMANS? Humans have altered 50–70% of terrestrial ecosystems.- Crops, pastures, grazing now take up 40% of the planet’s 133 million km 2 ice-free land. - Nearly half the world’s forests are gone or altered- Deserts have expanded by >10 million km 2- >40% of the planet’s freshwater used- Cities, towns and roads now cover 3 million km 2 Humans use more than 40% of the planet’s annual gross primary productivity. Humans ¡rst exceeded the planet’s sustainable carrying capacity in the 1980s and now extract 20% more than its regenerative capacity annually....
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This note was uploaded on 07/28/2010 for the course BIOLOGY BILD 3 taught by Professor Davidwoodruff during the Summer '10 term at San Diego.

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L27 last lecture - BILD 3 Woodruff last lecture 1 Human...

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