Hello Jayson, if you are looking for an appropriate index to quantify and compare floral diversity in the tropics, I suggest you use the exponent z from species–area relationships (as in Leithead et al. 2012 JVS)
Noted Maam. By the way, how about the species richness and species endemism? My dean assigned me to conduct a study in Mt. Payaopao found in the Philippines about the floral diversity, species richness and endemism. It is too difficult to learn in this field but I challenge myself to learn in the field of Ecology because my interest is here. Lack of ecology field activity when I am studying in College, that is the reason why it is hard to me to learn for the application in the field.
Richness and endemism are also very important measures. I suggest you to read the book "Measuring biological diversity" written by Anne Magurran (2004). There you will find many ways to answer to your question
In the case of studying floral diversity, indices such as shannon-diversity index, Important Value Index (IVI) of plant species, percentage evergreenness and percentage endemism are what I would suggest. The % of evergreenness and endemism play a key role in deciphering the condition of the forest and play important role in developing conservation strategies.
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