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The Design of Nature Preserves and other Protected Areas

The Design of Nature Preserves and other Protected Areas. The Design of Nature Preserves and other Protected Areas. Remember: in our section on fragmentation of habitat there were important size and shape concerns. Six Fundamental Design Features for Preserves.

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The Design of Nature Preserves and other Protected Areas

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  1. The Design of Nature Preserves and other Protected Areas

  2. The Design of Nature Preserves and other Protected Areas Remember: in our section on fragmentation of habitat there were important size and shape concerns

  3. Six Fundamental Design Features for Preserves 1. A large preserve will hold more species than a small preserve. Why? Pygmy Marmoset Remember- species area effect from Chapter 5

  4. A. Larger preserves tend to contain a wider range of environmental conditions B. Large preserves are more secure than small reserves for 3 reasons 1.) they have relatively larger populations that are less likely to go extinct 2.) they have a relatively shorter edge than small preserves 3.) they are less vulnerable to a catastrophic event

  5. 2. A single large preserve is preferable to several small reserves of equal total area. Why? Blue Poison Frog

  6. 68 ha Original area = 100 ha 62 ha 28 ha 28 ha Original area = 2 plots of 50 ha each Original area= 100 ha Interior Zones: given an edge width of 100 m

  7. 3. If it is necessary to have multiple small preserves, they should be as close together as possible. Why? Elk Remember the concept of a metapopulation from chapter 3

  8. 4. Arranging small preserves in a cluster is preferable to a linear fashion Why?

  9. 5. Connecting the preserves with corridors will make dispersal easier for many species. Why? Duh

  10. 100 ha Edge= 3545 m 50 ha 50 ha 100 ha Total Edge = 5013 m Edge = 4243 m 6. By making preserves as circular as possible, dispersal within the preserve will be enhanced and the negative effects of edge will be minimized

  11. Not as Good Good

  12. Not as Good Good

  13. Good Not as Good

  14. Good Not as Good

  15. Good Not as Good

  16. Not as Good Good

  17. National Parks- Conserving Wildlife? Bryce Canyon National Park

  18. Mammal Extinctions in our National Parks Park Name Established Extinct Mammals Bryce Canyon 1923 White-tail Jack Rabbit Red Fox Spotted Skunk Lassen Volcanic 1907 Nuttal’s Cottontail Spotted Skunk Fisher River Otter Ringtail Mount Ranier 1899 Gray Wolf Fisher Striped Skunk Lynx

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