BIO 227 Lecture Notes - Lecture 4: California Floristic Province, Tropical Rainforest, Kelp Forest
Document Summary
Review: where is density? (sail) structural complexity, area, isolation, latitude. Rapoport"s rule : as latitude decreases, the geographic ranges of individual species shrink steadily: species at higher latitudes tend to extend across greater geographic area. Species near the tropics tend to be more highly localized: richness works in an opposing way to range. 0 latitude 70: topical biodiversity is highly diverse and also highly localized, tropical areas have high alpha, beta, and gamma diversity. Double area 10 % increase in the number of species. 10 x increase in area 2 x increase in the number of species. Allows for different habitats: marine kelp forest, coral reefs, tropical rain forest. Isolation reduces richness (# species) but increases endemism (# unique species) 25 global hot spots of richness, endemism, and threat: madagascar: biodiversity hot spot, endemism especially despite it being an island o ex.
