BIOL 2060 Lecture Notes - Lecture 31: Coral Reef, Tropical Andes, Indo-Pacific
19 Apr 2016
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Document Summary
Local vs. regional diversity: regional diversity is the upper bound for local diversity. Local diversity cannot be higher than regional diversity: model i: local diversity increases with regional, model ii: local processes limit niche space and cause species exclusion, indo-pacific corals. More species on slope and less species on flats in all 5 regions: varying local diversity, but all three local diversities follow a linear relationship. Hotspot concept: conserve areas with many species first. Among those, focus on areas with many endemic species. Endemic species are species found nowhere else only in one area: among those, focus on the most threatened species, areas of high richness may not always capture rare or threatened species. Present on the poles very low richness: hotspots of endemism and threat. Each holds at least 1500 endemic species: each species has lost at least 70% of its original habitat. 86% of hotspot" habitat destroyed: hotspots used to cover 15. 7% of land surface.
