1 / 7

Chapter 58 Conservation Biology

Chapter 58 Conservation Biology. Biology 101 Tri-County Technical College Pendleton, SC. Human Impact. Accelerating pace of human-caused extinctions raises serious questions about future of biological diversity on Earth

thais
Télécharger la présentation

Chapter 58 Conservation Biology

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 58 Conservation Biology Biology 101 Tri-County Technical College Pendleton, SC

  2. Human Impact • Accelerating pace of human-caused extinctions raises serious questions about future of biological diversity on Earth • Conservation biology is scientific study of how to preserve diversity of life • Estimated extinctions range from 10% to 50% by 2050 • Hawaii, New Zealand, North America, Australia, and on and on

  3. Extinctions • Over 50% of all medicines contain natural plant or animal product • Extinctions deprive us of opportunity to study ecological relationships among organisms • Aesthetic pleasure • Continents versus islands • Rare species versus common species

  4. Most Important Factor • Habitat loss most important contributing factor to extinctions in U.S. • Traditional versus “sun-grown” coffee plantations • Introduced pests, predators, and competitors have eliminated many species • Overexploitation driven many to extinction • passenger pigeon; Steller’s sea lion

  5. News not getting any better… • Elephants and rhinoceroses • Orchids, parrots, reptiles, and tropical reef fishes • Loss of mutualists threaten some species • Plants and pollinators • Global warming threatens some species • > of only 1oC will shift temperature range 150 km north

  6. Warning…warning • Estimates are for a 2-5 degree C shift • Care to move 300-750 km north? • New climates will appear and old climates will disappear • We can make a difference but we must choose NOW!! • Design recovery plans

  7. Better to light a candle… • Captive propagation • Establishing parks and preserves • Restoring degraded ecosystems • Use less, reuse, recycle, and reclaim • Markets and conservation • Biodiversity from scientific, economic, and ethical point of view • We lose just one…any one…and we all suffer

More Related