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Upper Midwest Environmental Sciences Center

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spacer tree Vegetation Data - Graphical Vegetation Database Browser

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Query Percent Cover

 

Stratum

Species / Life Form

Year Range   to



table of pools and the strata they contain


  • Pool 4 2003 does not include backwater isolated or Lake Pepin Stratum.
  • Poolwide analysis was not calculated because no data were collected for the isolated backwater and Lake Pepin strata in 2003, Pool 4.
  • Sampling in Pool 26 and La Grange was only conducted from 1998 to 2004.

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

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URL: http://www.umesc.usgs.gov/data_library/vegetation/graphical/percent_cover_query.shtml
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Page Last Modified: March 7, 2011