![Population dynamics ,[object Object],[object Object],[object Object],[object Object],population time](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recomendados
Mais conteúdo relacionado
Mais procurados
Mais procurados (19)
Destaque
Destaque (11)
Semelhante a Ecology 1
Semelhante a Ecology 1 (17)
Último
Último (20)
Ecology 1
- 1. Ecosystems
- 11. Ecosystems make population growth curves complicated, as species #’s depend on each other
- 18. Mass Extinctions Vertical axis - percentage extinction of genera, horizontal axis - millions of years ago; from Wikipedia
- 19. Mass Extinctions: 5 Vertical axis - percentage extinction of genera, horizontal axis - millions of years ago; from Wikipedia
- 20. Mass Extinctions: 5 Vertical axis - percentage extinction of genera, horizontal axis - millions of years ago; from Wikipedia
- 21. Mass Extinctions: 5 Vertical axis - percentage extinction of genera, horizontal axis - millions of years ago; from Wikipedia
- 22. Mass Extinctions: 5 Vertical axis - percentage extinction of genera, horizontal axis - millions of years ago; from Wikipedia
- 23. Arrival of Homo Sapiens is bad for the locals:
- 26. 6 th Extinction? “ The current extinction rate is between 1,000 and 10,000 times higher than the natural rate.” (International Union for Conservation of Nature, IUCN)
- 27. 6 th Extinction? “ The current extinction rate is between 1,000 and 10,000 times higher than the natural rate.” (International Union for Conservation of Nature, IUCN) Wikipedia
- 28. 6 th Extinction? “ The current extinction rate is between 1,000 and 10,000 times higher than the natural rate.” (International Union for Conservation of Nature, IUCN) Not a number from science: We don’t really know
- 29. 6 th Extinction? Mammals, have an average species "lifespan" from origination to extinction of about 1 million years. !
- 30. 6 th Extinction? Mammals, have an average species "lifespan" from origination to extinction of about 1 million years. So: 5,000 mammal species extant: in the last 400 years, predict ~2 extinctions. !
- 31. 6 th Extinction? Mammals, have an average species "lifespan" from origination to extinction of about 1 million years. So: 5,000 mammal species extant: in the last 400 years, predict ~2 extinctions. Actually had 89; ~50 times background. !
- 32. Habitat loss: forests http://www.the-environmentalist.org/2008/10/cost-of-forest-loss-exceeds-current.html
- 34. Current World forests NASA http://www.nasa.gov/topics/earth/features/forest-height-map.html
- 35. Forest loss: are things improving? Millions of hectares change per year Losses slowing, some reforestation
- 36. Amazon Forest
- 39. Forest loss: the damage has already been done From William B. Greeley's, The Relation of Geography to Timber Supply, Economic Geography, 1925