Vegetation pattern on channel features in the Passage Creek Gorge, Virginia

Castanea
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Abstract

Persistent distribution patterns of woody vegetation within the bottomland forest of Passage Creek, Virginia, were related to fluvial landforms, channel geometry, streamflow characteristics, and sediment-size characteristics. Vegetation patterns were determined from species presence as observed in transects and traverses on landforms developed along the stream. Distinct species distributional patterns were found on four common fluvial geomorphic landforms: depositional bar, active-channel shelf, floodplain, and terrace. Independent hydrologic characteristics (flow duration and flood frequency) were determined for each of the landforms. Vegetation data were analyzed by binary discriminant analysis, principal components analysis, and detrended correspondence analysis. Results and related field observations suggest that certain species are significantly associated with specific fluvial landforms. Vegetation patterns appear to develop more as a result of hydrologic processes associated with each fluvial landform rather than from sediment-size characteristics. Flood disturbance may be an important factor in maintaining the vegetation patterns, which may therefore be used as indicators for particular hydrogeomorphic site conditions.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Vegetation pattern on channel features in the Passage Creek Gorge, Virginia
Series title Castanea
DOI 10.2307/1940528
Volume 48
Issue 2
Language English
Publisher Wiley
Contributing office(s) WMA - Earth System Processes Division
Description 11 p.
First page 62
Last page 72
Country United States
State Virginia
Other Geospatial Passage Creek