4/15/14 1 Biogeography Prof. J. Hicke 1 Lomolino et al., 2006 Historical Human-Caused Extinctions • Why the earlier extinctions on islands? • Why the decline in extinctions in more recent years? Biogeography Prof. J. Hicke 2 Chapin et al., 2000; Pimm et al., 1995 Species Threatened with Extinction Biogeography Prof. J. Hicke Bill Marsh, NY Times, 2012