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How to solve for Shannon-Weiner function or index for general diversity, Pielous evenness index...?
simpson's index of dominance, simpsonn's diversity index, margalef's sp. richness index, index of similarity, and community dominance. im having such a hard time. :(
please, ecologists and or statictics people i need help. this is for my marine ecology lab report. i have all my data gathered already but it seems our manual does not have the right formulas because i cant seem to solve these community indexes(most of them anyway).
by the way i gathered my data on a 30 m transect line using the intercept method (for grasses, bushes, trees etc)
thanks so much in advance :)
2 Answers
- farfulLv 41 decade agoFavorite Answer
see if this helps:
http://en.wikipedia.org/wiki/Information_entropy
Edit: Okay, maybe that's not the right article to show a biologist...
Basically the diversity index is the second equation you see on the link I provided: H(X) = -sum p(x) log p(x)
where p(x) is the ratio of individuals of a species to total number of individuals overall. The log you want is log base e (aka ln) since you're a biologist, and that's what biologists like.
- 5 years ago
God has a plan, don't question it. If God wants you to know his plan you will see it. Just like Tarzan was raised by gorillas and is a heathen, God's plan to strand me in the Jungle allowed me to not only show the heathen Tarzan the love of Jesus, but to also spread his word to his gorilla kin. Now if God could only bless me with the gift of tongues so that I can speak with the gorillas. I guess I'll just have to pray hard and leave it up to the Lord.
