Diminished Plant Richness and Abundance Below Lonicera maackii, an Invasive Shrub

The Asian shrub Lonicera maackii (Amur honeysuckle) is now common in many secondary forests in southwestern Ohio and adjacent states. We found lower species richness and abundance in plots (0.5 m2) placed below crowns of L. maackii than in plots placed away: all species (53% lower richness and 63% l...

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Bibliographic Details
Published in:The American midland naturalist 2002-01, Vol.147 (1), p.60-71
Main Authors: COLLIER, MATTHEW H, VANKAT, JOHN L, HUGHES, MICHAEL R
Format: Article
Language:English
Subjects:
Biological invasions
Contents
Deciduous forests
Ecological invasion
Environmental impact
Forests
Habitats
Herbs
Nonnative species
Plants
Seedlings
Shrubs
Summer
Taxa
Trees
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Summary:The Asian shrub Lonicera maackii (Amur honeysuckle) is now common in many secondary forests in southwestern Ohio and adjacent states. We found lower species richness and abundance in plots (0.5 m2) placed below crowns of L. maackii than in plots placed away: all species (53% lower richness and 63% lower cover), tree seedlings with canopy potential (−41% richness and −68% density) and seed + bud bank (−34% richness and −33% density). Moreover, most individual taxa had lower abundance below L. maackii: 86% of herbs, 100% of trees and 56% of seed + bud bank taxa. In addition, richness of all species and richness and density of tree seedlings decreased in forests with longer residence time of L. maackii.
ISSN:0003-0031
1938-4238
DOI:10.1674/0003-0031(2002)147[0060:DPRAAB]2.0.CO;2