Madsen, J.D., J.W. Sutherland, J.A. Bloomfield, L.W. Eichler, and C.W. Boylen, 1991. The Decline of Native Vegetation Under Dense Eurasian Watermilfoil Canopies, US Army Corps of Engineers.

Reprinted with kind permission from Journal of Aquatic Plant Management (1991) 29: 94-99

The Decline of Native Vegetation Under Dense Eurasian Watermilfoil Canopies

Abstract
A dense bed of Eurasian watermilfoil in Northwest Bay, Lake George, NY grew consistently and expansively from 1987 through 1989, suppressing native plant species. The total number of species found within the 3 m2 grid system in the Eurasian watermilfoil beds decreased from 20 in 1987 to 9 in 1989. Average number of species per quadrat declined from 5.5 in 1987 to 2.2 in 1989. This study is possibly the first to quantitatively document the suppression of native submersed macrophyte species by Eurasian watermilfoil after its establishment at a given site.

Entire Paper
Contact: John Madsen, US Army Corps of Engineers, Waterways Experiment Station, CEWES-ES-P, 3909 Halls Ferry Road, Vicksburg, MS 39180
Key Words: Eurasian_watermilfoil, Environmental_impacts, Colonization
Product Type: Research, Impact
User Type: Resource Management