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Initial Establishment of Riparian Vegetation after Disturbance by Debris Flows in Oregon
J. Leslie Gecy and Mark V. Wilson
The American Midland Naturalist
Vol. 123, No. 2 (Apr., 1990), pp. 282-291
Published by: The University of Notre Dame
Stable URL: http://www.jstor.org/stable/2426556
Page Count: 10
You can always find the topics here!Topics: Seedlings, Vegetation, Sprouts, Revegetation, Regrowth, Zeolites, Riparian forests, Ecological succession, Gravel, Riparian soils
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Three debris flows in the western Oregon Cascades were sampled near the end of the first growing season following disturbance. Vegetative regrowth accounted for 77% of the initial re-establishment of cover, but 67% of the individuals were seedlings. Surface deposit characteristics and intensity of scour were the most important influences on debris flow revegetation. Total cover (15%) and vegetative regrowth (14% cover, 28 shoots/m2) were highest on light intensity scour. Seedling establishment was highest on gravel and fine deposits (2-3% cover, 37-46 seedlings/m2). In contrast to previous studies which high-lighted the role of seedlings, revegetation patterns in these debris flows were determined by the response of both vegetative sprouts and seedlings.
The American Midland Naturalist © 1990 The University of Notre Dame