Threats to Biodiversity - Conservation Biology - Lecture Slides, Slides of Theory of Evolution

Download Threats to Biodiversity - Conservation Biology - Lecture Slides and more Slides Theory of Evolution in PDF only on Docsity! Threats to Biodiversity Photo of a forest fragment, surrounded by newly created cattle pasture in Amazonas, Brazil; Photo of a sign on St. Lucia (provided by John Battista, LSU – taken by one of his former students) Image from Wikipedia K/T (Cretaceous-Tertiary) Mass Extinction ~ 65 m.y.a.; Ended the reign of the dinosaurs P/Tr (Permain-Triassic) Mass Extinction ~ 251 m.y.a.; ~ 96% of all marine species & ~ 70% of all terrestrial species Current mass extinction could result in ~ 50% of species going extinct in 100 years (Wilson 2002) ? Extinction Photo from Wikipedia; For more information on HIPPO, see: E. O. Wilson (2002) The Future of Life Habitat destruction E. O. Wilson (b. 1929) Invasive species Pollution Human Population Overexploitation HIPPO Photos of forest destruction in Brazil & Malaysia HIPPO Habitat Destruction & Degradation Image from Discover Magazine, Jan-Feb 2010 Special Issue, “Top 100 Stories of 2009” – “#92: Nowhere to Hide from the Buzz of Civilization HIPPO Habitat Destruction & Degradation “An ever-expanding network of roads, railways, rivers, and shipping lanes means that only 10 percent of the earth‟s surface is now remote, defined as being at least 48 hours away from a major city. More than half of the world„s population lives within an hour of a major city…” NASA image from May 24, 2010 posted on Wikipedia HIPPO Pollution A.D. 2000 A.D. 1000 A.D. 1 1000 B.C. 2000 B.C. 3000 B.C. 4000 B.C. 5000 B.C. 6000 B.C. 7000 B.C. 1+ million years 8 7 6 5 2 1 4 3 Old Stone Age New Stone Age Bronze Age Iron Age Middle Ages Modern Age Black Death — The Plague 9 10 11 12 A.D. 3000 A.D. 4000 A.D. 5000 1800 1900 1950 1975 2000 2100 ? Future Billions of People Image from the Population Reference Bureau © 2006 HIPPO Human Population “More people means more of all the other HIPPO effects” (Wilson, 2002) Atlantic Cod HIPPO Overexploitation