✦ LIBER ✦

Modelling flow resistance in vegetated streams: review and development of new theory

✍ Scribed by Dr Julian C. Green

Book ID: 102264585
Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 148 KB
Volume: 19
Category: Article
ISSN: 0885-6087
DOI: 10.1002/hyp.5564

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Aquatic macrophytes are often the dominant factor influencing flow conditions within the channels they occupy. Existing knowledge of how stream plants affect the flow is outlined, and the different scales at which vegetation resistance operates are proposed. Resistance is shown to be a function of the size of the plants, their structural properties, location in the channel, and the local flow conditions. Current models to calculate this composite resistance effect are assessed in the light of theoretical considerations of the nature of vegetation resistance. New theory is also presented, which demonstrates the non‐linear relationship between channel resistance and the proportion of the channel occupied by vegetation. Copyright © 2004 John Wiley & Sons, Ltd.

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