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Impact of hydrodynamic changes on the zonation of helophytes

Impact of hydrodynamic changes on the zonation of helophytes Water movement has a strong impact on the development and persistence of helophyte stands along large water bodies. The decline ofScirpus andPhragmites stands in the Rhine-Meuse estuary (The Netherlands), due to changed hydrodynamic conditions (reduced tidal action, increased shoreline erosion), illustrates the effects of large-scale hydrological regulation. Hydrodynamic factors partly explain the distribution and composition of helophyte vegetation bordering the open water. A vertical zonation emerges during the stages of dispersal, germination, seedling establishment and adult growth of the plants. Differences between species may result in the occupation of different water-depth zones. Additionally, gradients of wave exposure result in a horizontal zonation along water bodies. Restrictions to helophyte development due to the hydrological regime and wave attack should be taken into account in wetland restoration studies. Water-level management, instead of a strict control of water levels, should be one of the key elements of water management in the future. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aquatic Ecology Springer Journals

Impact of hydrodynamic changes on the zonation of helophytes

Aquatic Ecology , Volume 30 (3) – Nov 15, 2005

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References (45)

Publisher
Springer Journals
Copyright
Copyright
Subject
Life Sciences; Freshwater & Marine Ecology; Ecosystems
ISSN
1386-2588
eISSN
1573-5125
DOI
10.1007/BF02272236
Publisher site
See Article on Publisher Site

Abstract

Water movement has a strong impact on the development and persistence of helophyte stands along large water bodies. The decline ofScirpus andPhragmites stands in the Rhine-Meuse estuary (The Netherlands), due to changed hydrodynamic conditions (reduced tidal action, increased shoreline erosion), illustrates the effects of large-scale hydrological regulation. Hydrodynamic factors partly explain the distribution and composition of helophyte vegetation bordering the open water. A vertical zonation emerges during the stages of dispersal, germination, seedling establishment and adult growth of the plants. Differences between species may result in the occupation of different water-depth zones. Additionally, gradients of wave exposure result in a horizontal zonation along water bodies. Restrictions to helophyte development due to the hydrological regime and wave attack should be taken into account in wetland restoration studies. Water-level management, instead of a strict control of water levels, should be one of the key elements of water management in the future.

Journal

Aquatic EcologySpringer Journals

Published: Nov 15, 2005

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