Valley plugs, land use, and phytogeomorphic response: Chapter 14

By:  and 
Edited by: John F. Shroder

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Abstract

Anthropogenic alteration of fluvial systems can disrupt functional processes that provide valuable ecosystem services. Channelization alters fluvial parameters and the connectivity of river channels to their floodplains which is critical for productivity, nutrient cycling, flood control, and biodiversity. The effects of channelization can be exacerbated by local geology and land-use activities, resulting in dramatic geomorphic readjustments including the formation of valley plugs. Considerable variation in the response of abiotic processes, including surface hydrology, subsurface hydrology, and sedimentation dynamics, to channelization and the formation of valley plugs. Altered abiotic processes associated with these geomorphic features and readjustments influence biotic processes including species composition, abundance, and successional processes. Considerable interest exists for restoring altered fluvial systems and their floodplains because of their social and ecological importance. Understanding abiotic and biotic responses of channelization and valley-plug formation within the context of the watershed is essential to successful restoration. This chapter focuses on the primary causes of valley-plug formation, resulting fluvial-geomorphic responses, vegetation responses, and restoration and research needs for these systems.

Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Valley plugs, land use, and phytogeomorphic response: Chapter 14
Chapter 14
DOI 10.1016/B978-0-12-374739-6.00330-4
Volume 12
Year Published 2013
Language English
Publisher Elsevier
Contributing office(s) Coop Res Unit Atlanta
Description 15 p.
Larger Work Type Book
Larger Work Title Treatise on Geomorphology: Ecogeomorphology
First page 221
Last page 235
Online Only (Y/N) N
Additional Online Files (Y/N) N