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Master Thesis

Effects of hydro-morphological restoration of Dutch lowland streams on macrophytes : relations between fine scale physical features and aquatic plants communities

Abstract : As a consequence of intense channelisation, agriculture and urbanization, 96% of Dutch streams are nowadays directly impacted by human activities, thus affecting stream biota. In response to this general stream degradation, many restoration projects were carried out over the past decades to improve stream habitat quality, but often leading to no ecological improvement. In 2010 and 2011, Dutch waterboards undertook innovative restoration measures encompassing reshaping the stream bed to make it less wide and deep, flattening the banks' slope and creating meanders. To assess the impact of these measures, macrophyte communities of restored and unrestored reaches of three streams were compared. After two years, plant diversity showed an increase in the stream edges of restored sections, but not in the channel. Growth forms responded differently to restoration, according to their habitat requirements. Moreover, the results suggest that this increased plant diversity might be more linked to the creation of more suitable habitats (i.e. shallower and narrower streams) than to the creation of meanders.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-00907303
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Submitted on : Thursday, November 21, 2013 - 10:00:41 AM
Last modification on : Monday, July 6, 2020 - 3:38:21 PM
Long-term archiving on: : Saturday, February 22, 2014 - 4:32:19 AM

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  • HAL Id : dumas-00907303, version 1

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Claire Poupin. Effects of hydro-morphological restoration of Dutch lowland streams on macrophytes : relations between fine scale physical features and aquatic plants communities. Agricultural sciences. 2013. ⟨dumas-00907303⟩

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