Unformatted text preview: Conservation Action Today's questions: I. II. III. IV. How can we design effective protected areas? How can we mitigate threats? How can we restore damaged ecosystems? How can we lower our "ecological footprints?" I. How can we design effective protected areas? A. Efficiency issue: protecting the largest number of species in the smallest possible areas Areas with high #s endemic plants; high level of threat B. Earlier approach: What to do when data are lacking? l h h d h d l k ? Jared Diamond's recommendations for national park system in Irian Jaya (Indonesian New Guinea) system in Irian Jaya (Indonesian New Guinea) Irian Jaya Papua New Guinea Red areas have high numbers of endemic birds. C. Establishing wildlife corridors Experiment with connected v unconnected patches in Experiment with connected v unconnected patches in longleaf pine woodlands (se USA)
Connected S Species r richness Unconnected d 0 1 2 3 4 5 Time (year after experimental plots established) Time (year after experimental plots established) New issue: How do wildlife corridors relate to climate change? Is "assisted migration" a good idea or a bad idea? E.g. Torreya g g g y taxifolia from Florida to North Carolina, Georgia II. How can we reduce threats? From yesterday: overexploitation, habitat loss, invasives From yesterday: overexploitation habitat loss invasives A. "Think globally, act locally." As a biologist, what would you advocate? would you advocate? Overexploitation Habitat loss Local National l Global B. Controlling invasives Purple loosestrife, imported from Europe, was taking over large expanses of marshes in North America A researcher found two species of beetle that feed ONLY on purple loosestrife; cultivated large populations purple loosestrife cultivated large populations Purple loosestrife is now controlled in areas where the P l l t if i t ll d i h th beetles have been released III. How can we restore damaged ecosystems? Wangari Maathai and the Green Belt Movement and the Green Belt Movement Started in 1977, this NGO has now organized the planting of over 40 million trees in Africa h l i f illi i fi Local examples of restoration projects: IV. How can we lower our "ecological footprints?" See http://www.myfootprint.org/ See http://www myfootprint org/ http://www.footprintnetwork.org/en/index.php/GFN/ page/calculators/ A "footprint" is an estimate of how many hectares of productive land it takes to support your lifestyle. l k lf l Usually assess food, transportation, shelter, goods/services U ll f d t t ti h lt d/ i Other action to lower your ecological footprint: Food: Transportation: a spo tat o Goods/services: ...
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- Fall '07
- Biology, New Guinea, Green Belt Movement, Irian Jaya, Indonesian New Guinea, overexploitation habitat loss