The Impacts, Invasibility, and Restoration Ecology of an Invasive Shrub, Amur Honeysuckle (<i>Lonicera maackii</i>)
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Ohio University / OhioLINK
2005
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| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1133734744 |
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ndltd-OhioLink-oai-etd.ohiolink.edu-ohiou11337347442021-08-03T05:43:25Z The Impacts, Invasibility, and Restoration Ecology of an Invasive Shrub, Amur Honeysuckle (<i>Lonicera maackii</i>) Hartman, Kurt M. Predicting invasive species impacts exotic weed ecology dendrochronology dendroecology modeling forest succession tree seedling recruitment Ohio forestry conservation biology life history theory invasive plants non-native nonindigenous Invasive species are an environmental problem of increasing global concern. Invasives have been intentionally and accidentally transported across previously impeding barriers to new regions where they interact with native species. One invasive shrub, Amur honeysuckle (<i>Lonicera maackii</i>), was introduced into the US from Manchuria in the late 1800s for conservation and horticultural purposes. Since then, it has become ecologically problematic in open areas and forested habitats. The goals of this research were to (1) investigate the impacts of <i>L. maackii</i> on the structure and composition of native plant communities, (2) measure changes in the productivity of overstory trees at invaded sites using dendrochronological techniques, (3) study the growth and biomass allocation of <i>L. maackii</i> seedlings and generate a predictive model regarding their establishment, and (4) investigate the restoration ecology of this species in terms of its eradication and replacement with native tree species. First, using the chronosequence method, sites with various invasion times were sampled, and long-invaded sites were found to have significant reductions in species richness and have a simplified structure relative to recently invaded and non-invaded sites. Thus, successional trajectories were likely being diverted by <i>L. maackii</i>. Second, trees were cored, and annual tree-ring growth was measured. Reductions in tree growth indicate that <i>L. maackii</i> is able to successfully compete with overstory trees and significantly suppress productivity. Third, <i>L. maackii</i> seedlings were grown in various combinations of light and water and glaciated and unglaciated soils. Findings suggest that light was the most important factor influencing seedling growth. Drought conditions limited seedlings’ plastic ability to respond to increases in irradiance, and interestingly, glaciated soil was found to have greater <i>L. maackii</i> growth potential than unglaciated soil. Finally, the most effective means of restoring sites infested by <i>L. maackii</i> was investigated comparing the use of a 22-caliber herbicide injection gun and the cut-and-paint technique. Both methods were equally effective, and <i>L. maackii</i> eradication facilitated native seedling growth and survival. Overall, findings indicate that <i>L. maackii</i> is an aggressive weed with substantial negative ecological impacts on invaded forest ecosystems. Restoration practices involving prevention and removal of this shrub are recommended. 2005 English text Ohio University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1133734744 http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1133734744 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
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NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Predicting invasive species impacts exotic weed ecology dendrochronology dendroecology modeling forest succession tree seedling recruitment Ohio forestry conservation biology life history theory invasive plants non-native nonindigenous |
| spellingShingle |
Predicting invasive species impacts exotic weed ecology dendrochronology dendroecology modeling forest succession tree seedling recruitment Ohio forestry conservation biology life history theory invasive plants non-native nonindigenous Hartman, Kurt M. The Impacts, Invasibility, and Restoration Ecology of an Invasive Shrub, Amur Honeysuckle (<i>Lonicera maackii</i>) |
| author |
Hartman, Kurt M. |
| author_facet |
Hartman, Kurt M. |
| author_sort |
Hartman, Kurt M. |
| title |
The Impacts, Invasibility, and Restoration Ecology of an Invasive Shrub, Amur Honeysuckle (<i>Lonicera maackii</i>) |
| title_short |
The Impacts, Invasibility, and Restoration Ecology of an Invasive Shrub, Amur Honeysuckle (<i>Lonicera maackii</i>) |
| title_full |
The Impacts, Invasibility, and Restoration Ecology of an Invasive Shrub, Amur Honeysuckle (<i>Lonicera maackii</i>) |
| title_fullStr |
The Impacts, Invasibility, and Restoration Ecology of an Invasive Shrub, Amur Honeysuckle (<i>Lonicera maackii</i>) |
| title_full_unstemmed |
The Impacts, Invasibility, and Restoration Ecology of an Invasive Shrub, Amur Honeysuckle (<i>Lonicera maackii</i>) |
| title_sort |
impacts, invasibility, and restoration ecology of an invasive shrub, amur honeysuckle (<i>lonicera maackii</i>) |
| publisher |
Ohio University / OhioLINK |
| publishDate |
2005 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1133734744 |
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AT hartmankurtm theimpactsinvasibilityandrestorationecologyofaninvasiveshrubamurhoneysuckleiloniceramaackiii AT hartmankurtm impactsinvasibilityandrestorationecologyofaninvasiveshrubamurhoneysuckleiloniceramaackiii |
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1719424160620347392 |