Species Diversity. Classification. In order to understand how diverse this world is we as humans needed to group up all the organisms on earth. Classification is the process of grouping. Using similarities and differences in physical characteristics to sort all things.
Dichotomous keys are used to group organisms.
An estimated quantitative measurement of how diverse a species is or the abundance of species within an ecosystem.
Simpson’s diversity index:
Measures both species richness (number of…) and species evenness (abundance)
D = N(N-1)
N = total number of organisms of all species.
n = total number of organisms of one species.
D = 1 lowest diversity, D = <1higher the diversity
remember the “environments” from predator/prey simulation?
Let’s look at them again.
We are explores to a new area. We want to know how many species we will be in contact with and how many there is of them. (species richness and evenness).
K-T stands for Cretaceous-Tertiary. Occurring during the Cretaceous and Tertiary Geological periods of time.