Skjern River Valley, Northern Europe’s most expensive wetland restoration project: benefits to breeding waterbirds
After circa 35 years of drainage and intensive arable tillage, the lower Skjern River, Den-mark was re-engineered to its original meanders and flooding regime, creating 22 km2 of lakes, shallow wetlands and seasonally flooded grazed wet grassland costing €38 million. The primary motivation was to re...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.664.1332 2023-05-15T15:32:38+02:00 Skjern River Valley, Northern Europe’s most expensive wetland restoration project: benefits to breeding waterbirds Thomas Bregnballe Ole Amstrup Thomas E. Holm Preben Clausen Anthony D. Fox The Pennsylvania State University CiteSeerX Archives 2013 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.1332 http://ornisfennica.org/pdf/latest/414Bregnballe.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.1332 http://ornisfennica.org/pdf/latest/414Bregnballe.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://ornisfennica.org/pdf/latest/414Bregnballe.pdf text 2013 ftciteseerx 2016-01-08T17:00:43Z After circa 35 years of drainage and intensive arable tillage, the lower Skjern River, Den-mark was re-engineered to its original meanders and flooding regime, creating 22 km2 of lakes, shallow wetlands and seasonally flooded grazed wet grassland costing €38 million. The primary motivation was to restore the sediment/nutrient retention capacity of the river valley to reduce eutrophication of Ringkøbing Fjord at its efflux. Secondary objec-tives were to (i) restore breeding and staging bird habitat, (ii) enhance the self-sustaining Atlantic Salmon Salmo salar population and (iii) improve recreational and tourist activi-ties. Despite lack of specific success criteria, breeding waterbird numbers increased from 134 ± 22.9 SE (n = 3) pairs before to 1,744 ± 153 SE (n = 5) after restoration (although on average 1,004 of these were Black-headed Gulls Chroicocephalus ridibundus), species richness and diversity also increased. Twenty-nine waterbird species returned to breed, 10 of national or international significance (Danish Red List/European Union Birds Direc-tive Annex 1 species) now ranking Skjern River amongst the top 10 most important bree-ding waterbird sites in Denmark. Currently, agriculture supports cost-neutral manage-ment of the restoration area, but whilst most expected wet meadow and marsh species had returned, lack of goal-orientated management targets resulted in some additional rare and threatened species remaining absent. Breeding pair density and diversity of other species could have been greatly improved by prior planning and management intervention but at additional cost. 1. Text Atlantic salmon Salmo salar Chroicocephalus ridibundus Unknown Bree ENVELOPE(9.466,9.466,62.617,62.617) Tive ENVELOPE(12.480,12.480,65.107,65.107) |
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Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
After circa 35 years of drainage and intensive arable tillage, the lower Skjern River, Den-mark was re-engineered to its original meanders and flooding regime, creating 22 km2 of lakes, shallow wetlands and seasonally flooded grazed wet grassland costing €38 million. The primary motivation was to restore the sediment/nutrient retention capacity of the river valley to reduce eutrophication of Ringkøbing Fjord at its efflux. Secondary objec-tives were to (i) restore breeding and staging bird habitat, (ii) enhance the self-sustaining Atlantic Salmon Salmo salar population and (iii) improve recreational and tourist activi-ties. Despite lack of specific success criteria, breeding waterbird numbers increased from 134 ± 22.9 SE (n = 3) pairs before to 1,744 ± 153 SE (n = 5) after restoration (although on average 1,004 of these were Black-headed Gulls Chroicocephalus ridibundus), species richness and diversity also increased. Twenty-nine waterbird species returned to breed, 10 of national or international significance (Danish Red List/European Union Birds Direc-tive Annex 1 species) now ranking Skjern River amongst the top 10 most important bree-ding waterbird sites in Denmark. Currently, agriculture supports cost-neutral manage-ment of the restoration area, but whilst most expected wet meadow and marsh species had returned, lack of goal-orientated management targets resulted in some additional rare and threatened species remaining absent. Breeding pair density and diversity of other species could have been greatly improved by prior planning and management intervention but at additional cost. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Thomas Bregnballe Ole Amstrup Thomas E. Holm Preben Clausen Anthony D. Fox |
spellingShingle |
Thomas Bregnballe Ole Amstrup Thomas E. Holm Preben Clausen Anthony D. Fox Skjern River Valley, Northern Europe’s most expensive wetland restoration project: benefits to breeding waterbirds |
author_facet |
Thomas Bregnballe Ole Amstrup Thomas E. Holm Preben Clausen Anthony D. Fox |
author_sort |
Thomas Bregnballe |
title |
Skjern River Valley, Northern Europe’s most expensive wetland restoration project: benefits to breeding waterbirds |
title_short |
Skjern River Valley, Northern Europe’s most expensive wetland restoration project: benefits to breeding waterbirds |
title_full |
Skjern River Valley, Northern Europe’s most expensive wetland restoration project: benefits to breeding waterbirds |
title_fullStr |
Skjern River Valley, Northern Europe’s most expensive wetland restoration project: benefits to breeding waterbirds |
title_full_unstemmed |
Skjern River Valley, Northern Europe’s most expensive wetland restoration project: benefits to breeding waterbirds |
title_sort |
skjern river valley, northern europe’s most expensive wetland restoration project: benefits to breeding waterbirds |
publishDate |
2013 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.1332 http://ornisfennica.org/pdf/latest/414Bregnballe.pdf |
long_lat |
ENVELOPE(9.466,9.466,62.617,62.617) ENVELOPE(12.480,12.480,65.107,65.107) |
geographic |
Bree Tive |
geographic_facet |
Bree Tive |
genre |
Atlantic salmon Salmo salar Chroicocephalus ridibundus |
genre_facet |
Atlantic salmon Salmo salar Chroicocephalus ridibundus |
op_source |
http://ornisfennica.org/pdf/latest/414Bregnballe.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.1332 http://ornisfennica.org/pdf/latest/414Bregnballe.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766363126938206208 |