ISSN:
1573-5125
Schlagwort(e):
helophytes
;
Phragmites
;
Scirpus
;
water level
;
wave exposure
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
Notizen:
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.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF02272236
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