Forest development in a restored floodplain: effects of grazing, inundation and vegetation

Perry Cornelissen*, Mathieu Decuyper, Karlè Sýkora, Jan Bokdam, Frank Berendse

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

In many countries worldwide, measures have been taken in floodplains for flood prevention and nature rehabilitation. In the Netherlands, floodplains are lowered by excavating to enlarge the discharge capacity and to create opportunities for development of river habitats such as forest. As forest can obstruct the water flow through the floodplain, their development has to be controlled in some cases. In many floodplains, vegetation development is controlled by cattle and horses. We carried out an exclosure experiment over a twelve year period in a partly excavated and year-round grazed floodplain along a lowland river in the Netherlands. We focussed on the thorny shrub hawthorn (Crataegus monogyna Jacq.) as it plays an important role in the obstruction of the water flow and in the wood-pasture cycle. Most hawthorn shrubs established on the excavated part of the floodplain with low cover of tall herbs. The total number of established hawthorn was negatively related to inundation on the lower parts of the excavated sites and positively related to inundation on the higher parts of the excavated sites. The herbivores negatively affected establishment and growth of hawthorn. Although lowering the floodplain by excavation will increase discharge capacity of the floodplain in the short term, it will decrease in the long term as excavation also increases opportunities for floodplain forest. If flood prevention and nature rehabilitation are both goals to be achieved in a floodplain, hawthorn encroachment can be controlled by a clever design of the measures and grazing management is needed
Original languageEnglish
Pages (from-to)21-32
JournalEuropean Journal of Environmental Sciences
Volume9
Issue number1
DOIs
Publication statusPublished - 28 Jun 2019

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floodplain
grazing
vegetation
water flow
excavation
shrub
effect
floodplain forest
grazing management
horse
river
herb
cattle
herbivore
pasture
habitat

Cite this

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title = "Forest development in a restored floodplain: effects of grazing, inundation and vegetation",
abstract = "In many countries worldwide, measures have been taken in floodplains for flood prevention and nature rehabilitation. In the Netherlands, floodplains are lowered by excavating to enlarge the discharge capacity and to create opportunities for development of river habitats such as forest. As forest can obstruct the water flow through the floodplain, their development has to be controlled in some cases. In many floodplains, vegetation development is controlled by cattle and horses. We carried out an exclosure experiment over a twelve year period in a partly excavated and year-round grazed floodplain along a lowland river in the Netherlands. We focussed on the thorny shrub hawthorn (Crataegus monogyna Jacq.) as it plays an important role in the obstruction of the water flow and in the wood-pasture cycle. Most hawthorn shrubs established on the excavated part of the floodplain with low cover of tall herbs. The total number of established hawthorn was negatively related to inundation on the lower parts of the excavated sites and positively related to inundation on the higher parts of the excavated sites. The herbivores negatively affected establishment and growth of hawthorn. Although lowering the floodplain by excavation will increase discharge capacity of the floodplain in the short term, it will decrease in the long term as excavation also increases opportunities for floodplain forest. If flood prevention and nature rehabilitation are both goals to be achieved in a floodplain, hawthorn encroachment can be controlled by a clever design of the measures and grazing management is needed",
author = "Perry Cornelissen and Mathieu Decuyper and Karl{\`e} S{\'y}kora and Jan Bokdam and Frank Berendse",
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Forest development in a restored floodplain: effects of grazing, inundation and vegetation. / Cornelissen, Perry; Decuyper, Mathieu; Sýkora, Karlè; Bokdam, Jan; Berendse, Frank.

In: European Journal of Environmental Sciences, Vol. 9, No. 1, 28.06.2019, p. 21-32.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Bokdam, Jan

AU - Berendse, Frank

PY - 2019/6/28

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