BIOL 111 Lecture Notes - Genetic Diversity, Archaea, Prokaryote

• School: McGill University
• Department: Biology (Sci)
• Course: BIOL 111
• Professor: Irene Gregory- Eaves

Document Summary

Biology lecture 3 diversity of life and prokaryotes 9/8/2011 6:25:00 am. Degree of differences in: genetic variation, species composition, interactions within and between ecosystems. Species diversity: this is commonly reserved for indices that measure both the number of species in a habitat as well as their relative abundances in a defined area. More diverse environments are even healthier, which provides certain services for humans i. e. they purify water make toxic not toxic. About 1. 5 million species are already named. About 13,000 new species named each year. But 3000 of those are synonyms they"ve already been described in literature but there"s so much that it"s difficult to keep track of them all (duplicated species) Terry erwin 1983: tree fogging (suplimental reading in my courses) In one species of tropical tree found 160 beetle species unique to that tree species, about. 50000 tropical tree species, beetles are about 2/5 of insects which are about all species.