BIS 2B Lecture Notes - Lecture 2: Penicillium, Species Evenness, Antibiotics

• School: UC-Davis
• Department: Biological Sciences
• Course: BIS 2B
• Professor: Schmitt Johanna

Document Summary

Biodiversity occurs at many levels > variation in characteristics due to: More sampling yields more species> use rarefaction curves/plots. You find less and less because we"ve found so many species. Signs of saturation with mammals but not with arachnida (there"s more to discover) Use data from part of earth and make assumptions aka sampling. How to estimate the total of n species. Find a relatively understudied area reppin earth"s biodiversity and a rep group for organisms for which you know there are k known species worldwide. Determine total number of n of species in sample and k known species in the sample. Equate ratios of n/k and n/k to solve for n cross. Multiply ex) 1690 true bug species which of 625 known, How many eukaryotic species how many insect species. N= # insects species k= 1,000,000 n= 1690 insects k= 625. Multiply by two bc you know half of the eukaryote species are insects.