Demonstration Restoration Measures in Tributaries of the Vindel River Catchment
Some ecological restoration projects include elements of trial and error where new measures are repeatedly tried, evaluated, and modified until satisfactory results are achieved. Thereafter, the resulting methods may be applied on larger scales. A difficult step is judging whether developed "be...
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Resilience Alliance
2013
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ftdoajarticles:oai:doaj.org/article:8829ab73f4814b24aff89dd897394bc3 2023-05-15T17:45:07+02:00 Demonstration Restoration Measures in Tributaries of the Vindel River Catchment Johanna Gardeström Daniel Holmqvist Lina E. Polvi Christer Nilsson 2013-09-01T00:00:00Z https://doi.org/10.5751/ES-05609-180308 https://doaj.org/article/8829ab73f4814b24aff89dd897394bc3 EN eng Resilience Alliance http://www.ecologyandsociety.org/vol18/iss3/art8/ https://doaj.org/toc/1708-3087 1708-3087 doi:10.5751/ES-05609-180308 https://doaj.org/article/8829ab73f4814b24aff89dd897394bc3 Ecology and Society, Vol 18, Iss 3, p 8 (2013) boulders large wood northern Sweden restoration river stream timber floating Biology (General) QH301-705.5 Ecology QH540-549.5 article 2013 ftdoajarticles https://doi.org/10.5751/ES-05609-180308 2022-12-31T07:17:36Z Some ecological restoration projects include elements of trial and error where new measures are repeatedly tried, evaluated, and modified until satisfactory results are achieved. Thereafter, the resulting methods may be applied on larger scales. A difficult step is judging whether developed "best-practice" methods have become reasonably ecologically functional or whether further experimentation "demonstration" methods can lead to yet better results. Here, we use a stream restoration project as a case study for evaluating methods and abiotic effects and outlining stakeholder support for demonstration restoration measures, rather than only using best-practice methods. Our work was located in the Vindel River system, a free-flowing river that is part of the Natura 2000 network. The river was exploited for timber floating from 1850-1976, and rapids in the main channel and tributaries below timberline were channelized to increase timber transport capacity. Several side channels in multi-channeled rapids were blocked and the flow was concentrated to a single channel from which boulders and large wood were removed. Hence, previously heterogeneous environments were replaced by more homogeneous systems with limited habitat for riverine species. The restoration project strives to alleviate the effects of fragmentation and channelization in affected rapids by returning coarse sediment from channel margins to the main channel. However, only smaller, angular sediment is available given blasting of large boulders, and large (old-growth) wood is largely absent; therefore, original levels of large boulders and large wood in channels cannot be achieved with standard restoration practices. In 10 demonstration sites, we compensated for this by adding large boulders and large wood (i.e., entire trees) from adjacent upland areas to previously best-practice restored reaches and compared their hydraulic characteristics with 10 other best-practice sites. The demonstration sites exhibited significantly reduced and more variable current ... Article in Journal/Newspaper Northern Sweden Directory of Open Access Journals: DOAJ Articles Ecology and Society 18 3 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
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language |
English |
topic |
boulders large wood northern Sweden restoration river stream timber floating Biology (General) QH301-705.5 Ecology QH540-549.5 |
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boulders large wood northern Sweden restoration river stream timber floating Biology (General) QH301-705.5 Ecology QH540-549.5 Johanna Gardeström Daniel Holmqvist Lina E. Polvi Christer Nilsson Demonstration Restoration Measures in Tributaries of the Vindel River Catchment |
topic_facet |
boulders large wood northern Sweden restoration river stream timber floating Biology (General) QH301-705.5 Ecology QH540-549.5 |
description |
Some ecological restoration projects include elements of trial and error where new measures are repeatedly tried, evaluated, and modified until satisfactory results are achieved. Thereafter, the resulting methods may be applied on larger scales. A difficult step is judging whether developed "best-practice" methods have become reasonably ecologically functional or whether further experimentation "demonstration" methods can lead to yet better results. Here, we use a stream restoration project as a case study for evaluating methods and abiotic effects and outlining stakeholder support for demonstration restoration measures, rather than only using best-practice methods. Our work was located in the Vindel River system, a free-flowing river that is part of the Natura 2000 network. The river was exploited for timber floating from 1850-1976, and rapids in the main channel and tributaries below timberline were channelized to increase timber transport capacity. Several side channels in multi-channeled rapids were blocked and the flow was concentrated to a single channel from which boulders and large wood were removed. Hence, previously heterogeneous environments were replaced by more homogeneous systems with limited habitat for riverine species. The restoration project strives to alleviate the effects of fragmentation and channelization in affected rapids by returning coarse sediment from channel margins to the main channel. However, only smaller, angular sediment is available given blasting of large boulders, and large (old-growth) wood is largely absent; therefore, original levels of large boulders and large wood in channels cannot be achieved with standard restoration practices. In 10 demonstration sites, we compensated for this by adding large boulders and large wood (i.e., entire trees) from adjacent upland areas to previously best-practice restored reaches and compared their hydraulic characteristics with 10 other best-practice sites. The demonstration sites exhibited significantly reduced and more variable current ... |
format |
Article in Journal/Newspaper |
author |
Johanna Gardeström Daniel Holmqvist Lina E. Polvi Christer Nilsson |
author_facet |
Johanna Gardeström Daniel Holmqvist Lina E. Polvi Christer Nilsson |
author_sort |
Johanna Gardeström |
title |
Demonstration Restoration Measures in Tributaries of the Vindel River Catchment |
title_short |
Demonstration Restoration Measures in Tributaries of the Vindel River Catchment |
title_full |
Demonstration Restoration Measures in Tributaries of the Vindel River Catchment |
title_fullStr |
Demonstration Restoration Measures in Tributaries of the Vindel River Catchment |
title_full_unstemmed |
Demonstration Restoration Measures in Tributaries of the Vindel River Catchment |
title_sort |
demonstration restoration measures in tributaries of the vindel river catchment |
publisher |
Resilience Alliance |
publishDate |
2013 |
url |
https://doi.org/10.5751/ES-05609-180308 https://doaj.org/article/8829ab73f4814b24aff89dd897394bc3 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
Ecology and Society, Vol 18, Iss 3, p 8 (2013) |
op_relation |
http://www.ecologyandsociety.org/vol18/iss3/art8/ https://doaj.org/toc/1708-3087 1708-3087 doi:10.5751/ES-05609-180308 https://doaj.org/article/8829ab73f4814b24aff89dd897394bc3 |
op_doi |
https://doi.org/10.5751/ES-05609-180308 |
container_title |
Ecology and Society |
container_volume |
18 |
container_issue |
3 |
_version_ |
1766147875397435392 |