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Upper Midwest Environmental Sciences Center
folder Long Term Resource Monitoring Program
spacer tree Vegetation Data - Graphical Vegetation Database Browser

link to about veg component pagelink to help page

Diversity Indexes

Two different diversity metrics are offered in the Vegetation Graphical Database Browser, Species Evenness and Species Richness .

Species Eveness
species evenness

Querying for species evenness allows you to see how diverse the pools vegetation species are. It allows you to query based on lifeform and a year range. The diversity index and evenness are calculated using Shannon's diversity index.

Species Richness

Species richness is a measure of the diversity within each study area. The total number of species observed each year is plotted as a time series for each study area.

species richness chart

 

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Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://umesc.usgs.gov/data_library/vegetation/graphical/diversity_metrics.html
Page Contact Information: Contacting the Upper Midwest Environmental Sciences Center
Page Last Modified: December 31, 2012