Seeing the Forest and the Stream: Assessing the Influence of Riparian Invasion by the Exotic Shrub Amur Honeysuckle (<i>Lonicera maackii</i>) on Terrestrial-to-Aquatic Linkages
| Main Author: | |
|---|---|
| Language: | English |
| Published: |
University of Dayton / OhioLINK
2017
|
| Subjects: | |
| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=dayton1511907835465838 |
| id |
ndltd-OhioLink-oai-etd.ohiolink.edu-dayton1511907835465838 |
|---|---|
| record_format |
oai_dc |
| spelling |
ndltd-OhioLink-oai-etd.ohiolink.edu-dayton15119078354658382021-08-03T07:04:45Z Seeing the Forest and the Stream: Assessing the Influence of Riparian Invasion by the Exotic Shrub Amur Honeysuckle (<i>Lonicera maackii</i>) on Terrestrial-to-Aquatic Linkages Rowekamp, Erin Catherine Ecology Biology Lonicera maackii Amur honeysuckle invasive species terrestrial-to-aquatic linkages invasion ecology Terrestrial-to-aquatic linkages are an important vector for the transfer of nutrients from one habitat to another. Therefore, the biology of headwater streams is strongly influenced by the surrounding terrestrial riparian vegetation. Amur honeysuckle (<i>Lonicera maackii</i>) is an invasive shrub that thrives in disrupted habitats including stream riparian zones. Although, extensive research has shown the detrimental effects of <i>L. maackii</i> on terrestrial systems, little research has been done on how cross boundary subsidies such as leaves and woody debris are impacted by the dense and often overarching <i>L. maackii</i> invasion in headwater stream riparian zones. Therefore, the aim of this study is to understand the influence of a gradient of <i>L. maackii</i> density in riparian habitats on the contribution of organic subsidies in stream systems in Southwestern Ohio. Across the established gradient of <i>L. maackii</i> invasion leaf litter biomass, fruit biomass, falling twig biomass, terrestrial and aquatic fine woody debris (0.5-9.9 cm diameter) volume and count, and terrestrial and aquatic coarse woody debris (>9.9cm diameter) volume were accessed. We hypothesized that sites with a higher density of <i>L. maackii</i> would have a decreased total leaf litter biomass deposition due to the dense overarching riparian <i>L. maackii</i> over the stream increasing the potential of litter getting caught in the canopy. Additionally, based on the intentionally established gradient of sites we also expected <i>L. maackii</i> leaf biomass to increase as invasion intensity increased. Lastly, we hypothesized that woody biomass in the form of both fine and coarse woody debris would decrease along the invasion gradient due to the dense shrub architecture. The only significant treatment effects in regards to site were found for <i>L. maackii</i> only leaf litter biomass (p = <0.0001), count of aquatic fine woody debris (p = 0.03292), and fruit biomass (p = 0.00597). In all cases the observed treatment effect did not follow our hypotheses. The results of overall biomass and fruit biomass suggest that impact along the <i>L. maackii</i> gradient was not strong enough to overcome the impact of the riparian zone species heterogeneity and spatial differences. Additionally, the unique physiology of <i>L. maackii</i> appears to have strong potential influences on the biomass of leaf litter created by <i>L. maackii</i> as well as on the amount of fine woody debris generated that is also greater than the impact of the unique dense <i>L. maackii</i> canopy architecture. Despite the lack of support for our hypotheses of increasing loss of subsidies as <i>L. maackii</i> riparian density in the form of an overarching architecture increases, the increased presence of <i>L. maackii</i> in aquatic stream systems still has a myriad of negative consequences including potential bottom up effects. 2017-12-20 English text University of Dayton / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=dayton1511907835465838 http://rave.ohiolink.edu/etdc/view?acc_num=dayton1511907835465838 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. |
| collection |
NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Ecology Biology Lonicera maackii Amur honeysuckle invasive species terrestrial-to-aquatic linkages invasion ecology |
| spellingShingle |
Ecology Biology Lonicera maackii Amur honeysuckle invasive species terrestrial-to-aquatic linkages invasion ecology Rowekamp, Erin Catherine Seeing the Forest and the Stream: Assessing the Influence of Riparian Invasion by the Exotic Shrub Amur Honeysuckle (<i>Lonicera maackii</i>) on Terrestrial-to-Aquatic Linkages |
| author |
Rowekamp, Erin Catherine |
| author_facet |
Rowekamp, Erin Catherine |
| author_sort |
Rowekamp, Erin Catherine |
| title |
Seeing the Forest and the Stream: Assessing the Influence of Riparian Invasion by the Exotic Shrub Amur Honeysuckle (<i>Lonicera maackii</i>) on Terrestrial-to-Aquatic Linkages |
| title_short |
Seeing the Forest and the Stream: Assessing the Influence of Riparian Invasion by the Exotic Shrub Amur Honeysuckle (<i>Lonicera maackii</i>) on Terrestrial-to-Aquatic Linkages |
| title_full |
Seeing the Forest and the Stream: Assessing the Influence of Riparian Invasion by the Exotic Shrub Amur Honeysuckle (<i>Lonicera maackii</i>) on Terrestrial-to-Aquatic Linkages |
| title_fullStr |
Seeing the Forest and the Stream: Assessing the Influence of Riparian Invasion by the Exotic Shrub Amur Honeysuckle (<i>Lonicera maackii</i>) on Terrestrial-to-Aquatic Linkages |
| title_full_unstemmed |
Seeing the Forest and the Stream: Assessing the Influence of Riparian Invasion by the Exotic Shrub Amur Honeysuckle (<i>Lonicera maackii</i>) on Terrestrial-to-Aquatic Linkages |
| title_sort |
seeing the forest and the stream: assessing the influence of riparian invasion by the exotic shrub amur honeysuckle (<i>lonicera maackii</i>) on terrestrial-to-aquatic linkages |
| publisher |
University of Dayton / OhioLINK |
| publishDate |
2017 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1511907835465838 |
| work_keys_str_mv |
AT rowekamperincatherine seeingtheforestandthestreamassessingtheinfluenceofriparianinvasionbytheexoticshrubamurhoneysuckleiloniceramaackiiionterrestrialtoaquaticlinkages |
| _version_ |
1719453050938064896 |