PCB-4674 Lecture Notes - Lecture 6: Pesticide, Chloroquine, Macroevolution
Document Summary
This is the study of the spatial locations of species. One key to finding species is the ecological niche that they can occupy. Ecological niche: the set of conditions in which a species or population can persist. Rise of mountain range, changing course of ricer, climate change, continental drift: cladogenesis: species split in two, allopatric speciation: the speciation occurs in physically separated populations of the species, extinction: species go extinct. Most often results in permanent loss of species. Evolution predicts that descendent species should be found near where their ancestors lived. Present-day organisms tend to be found in the same area as their fossilized ancestors. Convergence: the tendency for unrelated groups of organisms to find similar solutions to the same ecological problems. (groups that live in different areas, look similar) It is difficult for dispersal to reach a distant island, so there are usually few taxa on each one.