1. Extinction’s New Face: Habitat Loss & Fragmentation

2. What is the evidence of habitat loss? Deforestation…

3. Source: www.guayaki.com/index.php?p=reforestation www.guayaki.com/index.php?p=reforestation

8. Deforestation… Is it only limited to the Amazon?

10. How does species abundance relate to habitat size? Make predictions Is there likely to be a relationship? Why or why not?

12. What are the impacts of decreasing habitat size? We call this habitat fragmentation Are there likely to be any additional problems, beyond simple reduction in area?

13. Over time large blocks of forest (green) are fragmented through a variety of land use activities (after Curtis, 1956) - Cadiz Township, Wisconsin.

14. Habitat Fragmentation & Edge Effects

15. Mean alien species richness, summarized by transect position and aspect. Sample size = 7 for each combination of transect and aspect. Redrawn from Brothers and Spingarn 1992). (http://dnr.state.il.us/orep/inrin/ecosys/forests/forstres.htm )http://dnr.state.il.us/orep/inrin/ecosys/forests/forstres.htm

16. Mean frequency of sample transect segments containing alien species (bottom), summarized by transect position and aspect. Sample size = 7 for each combination of transect and aspect. Redrawn from Brothers and Spingarn (1992). (http://dnr.state.il.us/orep/inrin/ecosys/forests/forstres.htm )http://dnr.state.il.us/orep/inrin/ecosys/forests/forstres.htm