Old field Vegetation Height and the Dispersal Pattern of Bird-Disseminated Woody Plants
DOI: 10.2307/2996227
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摘要: McDONNELL, M. J. (Department of Biological Sciences, Rutgers University, P.O. Box 1059, Piscataway, NJ 08854). Old field vegetation height and the dispersal pattern bird-disseminated woody plants. Bull. Torrey Bot. Club 113:6-11. 1986.-To determine influence old-field on plants, white ash (Fraxinus americana) saplings, similar size shape, were cut placed stakes at various heights (0.5-3.0 m) in a 1 ha central New Jersey. From August 9 to December 30, 1981 total 1247 seeds was collected from under saplings trap surface 36 m2. The most abundant Toxicodendron radicans, Rosa multiflora, Phytolacca americana, Juniperus virginiana. Seed input increased proportionally with sapling height. tallest class (3 received greatest seed input, while shortest (0.5 no input. Saplings became attractive perches served as recruitment foci for bird-dispersed when they projected over existing matrix herbaceous vegetation. Existing influences effectiveness both living (e.g., plants) non-living rocks, fence posts, etc.) structures
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