Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Julie S. Denslow; R. Flint Hughes
    Date: 2004
    Source: Weed Technology, Vol. 18: 1283-1287
    Publication Series: Miscellaneous Publication
    PDF: Download Publication  (440 KB)


    Dominant species have long been appreciated for their role in determining ecosystem attributes such as vegetation structure, successional patterns, soil characteristics, hydrology, and productivity. Exotic species may reach such high densities that they become community dominants, and it is in this role that exotics pose the greatest threat to native ecosystems. Four commonly observed patterns related to species dominance and their implications for understanding exotic invasions are discussed: the importance of scale in relationships between dominance and diversity, the positive correlation between local abundance and geographic range, the effects of dominants on ecosystem processes, and the mass effect of seed production in determining dominance. Understanding determinants of dominance will help us to better understand community invasibility.

    Publication Notes

    • You may send email to to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.


    Denslow, Julie S.; Hughes, R. Flint. 2004. Exotic plants as ecosystem dominants. Weed Technology, Vol. 18: 1283-1287


    diversity, ecosystem effects, geographic range, mass effect

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page