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Model-based evaluation of restoration measures efficiency in the anastomosing section of the River Narew.

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Title: Model-based evaluation of restoration measures efficiency in the anastomosing section of the River Narew.
Authors: Marcinkowski, Paweł1 (AUTHOR) p.marcinkowski@levis.sggw.pl, Kiczko, Adam1 (AUTHOR) adam_kiczko@sggw.pl, Okruszko, Tomasz1 (AUTHOR) t.okruszko@levis.sggw.pl
Source: Ecological Engineering. May2019, Vol. 130, p213-227. 15p.
Subjects: Stream restoration, Sedimentation & deposition, Flow velocity, Biotic communities, Rivers, River conservation, Sediment transport
Geographic Terms: Europe, Poland
Abstract: Multi-channel rivers support diverse and productive ecological communities, and their rareness in the developed world places a great importance on their conservation. The design of side channel restoration projects remains poorly informed by theory or empirical observations. One of the last examples of anastomosing rivers in Europe is a stretch of River Narew in Poland protected as a national park. Park Authorities face a problem of side channels extinction in last few decades and therefore a dedicated plan of protection measures (submerged weir construction, dredging and mowing of side channels) was established aimed at anastomosing system conservation. The objective of this study was an ex-ante assessment of the impact of proposed protection measures on discharge distribution, flow velocity and sediment transport potential in the anastomosing section of the river, using a hydraulic, one-dimensional model. Among the tested measures, more invasive dredging and damming were significantly more efficient than less invasive vegetation removal. Compared to other restoration projects of multi-channel rivers (Narew and Rhône cases), supported by extensive post-restoration monitoring, efficiency level was comparable reaching on maximum tenfold increase in discharge and fivefold increase in reach-averaged flow velocity in restored side channels. Post-conservation alterations of hydraulic properties in the anabranches resulted in a significant increase in sediment transport potential for measures changing channel geometry. Such change could potentially ensure the stability of restoration eliminating the main cause of channels extinction i.e. excessive sediment deposition. [ABSTRACT FROM AUTHOR]
Copyright of Ecological Engineering is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 136177324
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Model-based evaluation of restoration measures efficiency in the anastomosing section of the River Narew.
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  Data: <searchLink fieldCode="AR" term="%22Marcinkowski%2C+Paweł%22">Marcinkowski, Paweł</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> p.marcinkowski@levis.sggw.pl</i><br /><searchLink fieldCode="AR" term="%22Kiczko%2C+Adam%22">Kiczko, Adam</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> adam_kiczko@sggw.pl</i><br /><searchLink fieldCode="AR" term="%22Okruszko%2C+Tomasz%22">Okruszko, Tomasz</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> t.okruszko@levis.sggw.pl</i>
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  Data: <searchLink fieldCode="DE" term="%22Stream+restoration%22">Stream restoration</searchLink><br /><searchLink fieldCode="DE" term="%22Sedimentation+%26+deposition%22">Sedimentation & deposition</searchLink><br /><searchLink fieldCode="DE" term="%22Flow+velocity%22">Flow velocity</searchLink><br /><searchLink fieldCode="DE" term="%22Biotic+communities%22">Biotic communities</searchLink><br /><searchLink fieldCode="DE" term="%22Rivers%22">Rivers</searchLink><br /><searchLink fieldCode="DE" term="%22River+conservation%22">River conservation</searchLink><br /><searchLink fieldCode="DE" term="%22Sediment+transport%22">Sediment transport</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Europe%22">Europe</searchLink><br /><searchLink fieldCode="DE" term="%22Poland%22">Poland</searchLink>
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  Label: Abstract
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  Data: Multi-channel rivers support diverse and productive ecological communities, and their rareness in the developed world places a great importance on their conservation. The design of side channel restoration projects remains poorly informed by theory or empirical observations. One of the last examples of anastomosing rivers in Europe is a stretch of River Narew in Poland protected as a national park. Park Authorities face a problem of side channels extinction in last few decades and therefore a dedicated plan of protection measures (submerged weir construction, dredging and mowing of side channels) was established aimed at anastomosing system conservation. The objective of this study was an ex-ante assessment of the impact of proposed protection measures on discharge distribution, flow velocity and sediment transport potential in the anastomosing section of the river, using a hydraulic, one-dimensional model. Among the tested measures, more invasive dredging and damming were significantly more efficient than less invasive vegetation removal. Compared to other restoration projects of multi-channel rivers (Narew and Rhône cases), supported by extensive post-restoration monitoring, efficiency level was comparable reaching on maximum tenfold increase in discharge and fivefold increase in reach-averaged flow velocity in restored side channels. Post-conservation alterations of hydraulic properties in the anabranches resulted in a significant increase in sediment transport potential for measures changing channel geometry. Such change could potentially ensure the stability of restoration eliminating the main cause of channels extinction i.e. excessive sediment deposition. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Ecological Engineering is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.ecoleng.2019.02.022
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 15
        StartPage: 213
    Subjects:
      – SubjectFull: Stream restoration
        Type: general
      – SubjectFull: Sedimentation & deposition
        Type: general
      – SubjectFull: Flow velocity
        Type: general
      – SubjectFull: Biotic communities
        Type: general
      – SubjectFull: Rivers
        Type: general
      – SubjectFull: River conservation
        Type: general
      – SubjectFull: Sediment transport
        Type: general
      – SubjectFull: Europe
        Type: general
      – SubjectFull: Poland
        Type: general
    Titles:
      – TitleFull: Model-based evaluation of restoration measures efficiency in the anastomosing section of the River Narew.
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            NameFull: Marcinkowski, Paweł
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            NameFull: Kiczko, Adam
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            NameFull: Okruszko, Tomasz
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            – D: 01
              M: 05
              Text: May2019
              Type: published
              Y: 2019
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              Value: 130
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            – TitleFull: Ecological Engineering
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