2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/23/2019 | 9:30 AM - 9:45 AM | RIPARIAN FOREST RESTORATION TRANSFORMS STREAM CHANNEL GEOMORPHOLOGY: TIMESCALES AND MECHANISMS OF BIOGEOMORPHIC CHANGE | 251 DE
RIPARIAN FOREST RESTORATION TRANSFORMS STREAM CHANNEL GEOMORPHOLOGY: TIMESCALES AND MECHANISMS OF BIOGEOMORPHIC CHANGE
Plants act as effective river ecosystem engineers across spatial scales from individual plants to entire watersheds, through time as biomass changes within the annual growth cycles, over longer?term growth and senescence trajectories, and in response to external climatic, hydrological and geomorphological fluctuations and extreme events. Riparian and in-channel vegetation management is increasingly utilized as a tool in stream restoration and management, yet little is known regarding the timescales of river response to vegetation manipulation. The purpose of this paper is to review the utility of plants as river restoration engineers and present the results of a 40 year riparian reforestation experiment as a case study illustration of the dramatic in-channel geomorphological changes induces by conversion from grass to forest dominated riparian vegetation. Experimental results show widening and shallowing of channel geometry and overall coarsening of the substrate. Channel change accelerates upon delivery of in-channel wood from the maturing riparian forest, suggesting that the engineering potential of vegetation may not be maximized until structural maturity and complex age structures are achieved.
- Riparian
- Landuse
- Restoration
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Presenters/Authors
Melinda Daniels
(), Stroud Water Research Center, mdaniels@stroudcenter.org;
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