1 / 62

Overexploitation

Overexploitation. Tokyo Tuna Market. Commercial exploitation. Morel Mushrooms for Sale. Coral harvested for jewelry. Rhinoceros exploitation. Rhino horn Products – Dagger market in Yemen. Rhino Horn in Traditional Medicine. Wild Blueberries. Wild Salmon.

nitesh
Download Presentation

Overexploitation

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. Overexploitation Tokyo Tuna Market

  2. Commercial exploitation

  3. Morel Mushrooms for Sale

  4. Coral harvested for jewelry

  5. Rhinoceros exploitation

  6. Rhino horn Products – Dagger market in Yemen

  7. Rhino Horn in Traditional Medicine

  8. Wild Blueberries

  9. Wild Salmon

  10. Egret plumes and feathered hat

  11. Tragedy of the Commons

  12. Japanese Whaling Ships

  13. Subsistence exploitation

  14. Subsistence Hunting

  15. Recreational exploitation

  16. Hunting as Recreation

  17. Shell Collection

  18. Gordon Alcorn

  19. Photographic safari

  20. Cheetah on Land Rover

  21. Incidental exploitation

  22. Kemp’s Ridley Sea Turtle

  23. Trawling

  24. Shrimp net with TED – turtle exclusion device

  25. Indirect exploitation

  26. Domestic cats preying on small birds

  27. Pet market

  28. Tropical Fish for Aquarium Trade

  29. Cactus Market

  30. Saguaro Cactus

  31. Consequences of Overexploitation • Population Effects - Reduction in population size - Age structure - Sex ratio - Genetic structure 2. Ecosystem Effects

  32. Age Structure: A – fish in typical populationB – fish taken by fishing

  33. Sex Ratios – The Fisher

  34. Fisher Distribution

  35. Genetic Structure – Coho Salmon

  36. Genetic Structure – Coho Salmon

  37. Ecosystem Structure – Loss of Large Trees

  38. Planting Sequoias

  39. Giant Redwood

  40. Redwood Forest in the Air

  41. Ecosystem Structure – Loss of Snags

  42. Loss of Keystone Species - Sea Otter with Sea Urchin

  43. Loss of Keystone Species - Glyptodont

  44. Exotic Species

  45. Mrs. Black Horse, Cheyenne Nation, and dog travois

  46. American Chestnut

  47. Cracking From Chestnut Blight

  48. Exotic Species • Conservation biologists typically call introduced species “exotic species” - species which live outside their natural range • Botanists typically refer to exotic plants as alien species • Other terms you may see include biological invaders, introduced species, invasive species, non-indigenous species, non-native species (my preferred term)

More Related