BI111 Chapter Notes - Chapter 185: Transpiration, Biodiversity Hotspot, Insular Biogeography
Document Summary
Chapter 185: large-scale biogeographical factors and community diversity. Features of habitat influence # & types of resident species. Measuring biodiversity to help prioritize land use. One comm = 5 species, other 10 species 2nd has twice diversity than 1. H" value doesn"t help compare, b/c second comm h value = 2. 302 which is greater than comm 1 (1. 609), yet, 2nd more diverse. Thus, take exp(h: species richness & effective number of species are same when species have same relative abundance. Biogeography: study of distribution of species in geographic regions over time. Biodiversity results from balance b/w immigration & extinction: island area and isolation influence biodiversity; island = less species than continent of same size of island. Equilibrium theory of island biogeography: predicts # of species on island that will result from a balance b/w immigration & extinction. Imm high, and ext. low = # species will be high (vice versa: imm.
