USGS - science for a changing world

Upper Midwest Environmental Sciences Center

folder Long Term Resource Monitoring Program
spacer tree Vegetation Data - Graphical Vegetation Database Browser

about ltrmp vegetation componenthelp page

Query Percent Cover

 

Stratum

Species / Life Form

Year Range   to



table of pools and the strata they contain


Note: Pool 4, 2003 data does not include backwater isolated and Lake Pepin strata

Percent cover measures the amount of area rooted floating leaf and emergent species cover based on a cover rating. It is calculated using the following formula:

Percent Cover Formula

Where L j is the cover rating at individual sites and A is the midpoint of the corresponding percent cover, and M is the total number of sites in the stratum.


Graphical Vegetation Home Page | About the LTRMP Veg Component | Help Page
Frequency | Abundance Index | Percent Cover | Distribution maps | Species List
Community Composition | Vegetation Species Information | Community Similarity | Diversity Index

Accessibility FOIA Privacy Policies and Notices

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