BIOL 119 Chapter Notes - Chapter 57: Holocene Extinction, Habitat Fragmentation, Habitat Destruction
Document Summary
Biodiversity = biological diversity. the tree of life and all the branches (lineages) and tips (species): can be measured and analyzed at different levels. Genetic diversity = total genetic information contained within all individuals within a population, species, or group of species. Measured as the number and relative frequency of all genes and their alleles present: two technical advances that allow for a better cataloguing of genetic diversity= Techniques to sequence entire genomes of multiple members of the same species. Environmental sequencing = when a sample from water/soil in a habitat is taken and sequenced for all the genes present within it. Documents genetic diversity even if the species in question is unknown. Species diversity = diversity of species present: two ways to quantify it: Species richness = how many species are in a given community. Species diversity = weighted measure that incorporates abundance levels: techniques to quantify species diversity.
