Biodiversity refers to the variety of life in a given habitat and can be influenced by several factors. It is measured by looking at the number of different species, the variation within each species, and how evenly individuals are distributed among the species. Ecologists have developed diversity indices like the Shannon Index and Simpson's Index to quantify biodiversity by taking into account species richness, evenness of abundance and distribution, and other variables. The choice of index depends on which aspects of diversity are most important for the situation being studied.

1. Mark McGinley Honors College and Department of Biological Sciences Texas Tech University Biodiversity

6. What about variation between groups?

44. Shannon Index Pi 0.1 ln pi -2.30259 Pi * ln pi -0.23026 0.2 -1.60944 -0.32189 0.3 -1.20397 -0.36119 0.4 -0.91629 -0.36652 0.5 -0.69315 -0.34657 0.6 -0.51083 -0.3065 0.7 -0.35667 -0.24967 0.8 -0.22314 -0.17851 0.9 -0.10536 -0.09482 1 0 0