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| Titel |
Hydrologic and landscape changes in the Middle Ebro River (NE Spain): implications for restoration and management |
| VerfasserIn |
A. Cabezas, F. A. Comín, S. Beguería, M. Trabucchi |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 13, no. 2 ; Nr. 13, no. 2 (2009-02-25), S.273-284 |
| Datensatznummer |
250011767
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| Publikation (Nr.) |
 copernicus.org/hess-13-273-2009.pdf |
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| Zusammenfassung |
| The changes of landscape (1927–2003), discharge regime and anthropic
activities with the river-floodplain of one reach at the Middle Ebro River
(NE Spain) were investigated with the objective to identify the factors that
best explain the natural ecotope succession and propose a realistic
restoration option with consideration of the landscape dynamics during the
last century and the socio-economic context. Our results indicate that
hydrological and landscape patterns have been dramatically changed during
the last century as a consequence of human alteration of the fluvial
dynamics within the studied reach. The magnitude and variability of river
discharge events have decreased at the end of the last century, and flood
protection structures have disrupted the river floodplain connectivity. As a
result, the succesional pathways of riparian ecotopes have been heavily
modified because natural rejuvenation no longer takes place, resulting in
decreased landscape diversity. It is apparent from these data that
floodplain restoration must be incorporated as a significant factor into
river management plans if a more natural functioning wants to be retrieved.
The ecotope structure and dynamics of the 1927–1957 period should be adopted
as the guiding image, whereas current hydrologic and landscape (dykes,
raised surfaces) patterns should be considered. Under the current
socio-economic context, the more realistic option seems to create a dynamic
river corridor reallocating dykes and lowering floodplain heights. The
extent of this river corridor should adapt to the restored flow regime,
although periodic economic investments could be an option if the desired
self-sustained dynamism is not reached. |
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