Environmental Management

, Volume 2, Issue 4, pp 323–329 | Cite as

Application of the Braun-Blanquet cover-abundance scale for vegetation analysis in land development studies

  • Douglas A. Wikum
  • G. Frederick Shanholtzer


To document environmental impact predictions for land development, as required by United States government regulatory agencies, vegetation studies are conducted using a variety of methods. Density measurement (stem counts) is one method that is frequently used. However, density measurement of shrub and herbaceous vegetation is time-consuming and costly. As an alternative, the Braun-Blanquet cover-abundance scale was used to analyze vegetation in several ecological studies. Results from one of these studies show that the Braun-Blanquet method requires only one third to one fifth the field time required for the density method. Furthermore, cover-abundance ratings are better suited than density values to elucidate graphically species-environment relationships. For extensive surveys this method provides sufficiently accurate baseline data to allow environmental impact assessment as required by regulatory agencies.

Key words

Environmental impact assessment Density measurement Braun-Blanquet cover-abundance scale Vegetation analysis Biogeography 


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Copyright information

© Springer-Verlag New York Inc. 1978

Authors and Affiliations

  • Douglas A. Wikum
    • 1
  • G. Frederick Shanholtzer
    • 2
  1. 1.Stone & Webster Engineering CorporationBoston
  2. 2.Dames & MooreCranford

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