Evolution of artificial spawning sites for Atlantic salmon (Salmo salar) and sea trout (Salmo trutta): field studies and numerical modelling in Aurland, Norway
Abstract The presented study investigates the evolution of artificial gravel placements for Atlantic salmon and sea trout in Aurlandselva in Western Norway. Various monitoring methods have been applied including (i) quantifying the spatial extent and dynamics of spawning sites over the monitoring pe...
Published in: | Hydrobiologia |
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Language: | English |
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Springer Science and Business Media LLC
2020
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Online Access: | http://dx.doi.org/10.1007/s10750-019-04173-1 http://link.springer.com/content/pdf/10.1007/s10750-019-04173-1.pdf http://link.springer.com/article/10.1007/s10750-019-04173-1/fulltext.html |
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crspringernat:10.1007/s10750-019-04173-1 2023-05-15T15:31:35+02:00 Evolution of artificial spawning sites for Atlantic salmon (Salmo salar) and sea trout (Salmo trutta): field studies and numerical modelling in Aurland, Norway Hauer, C. Pulg, U. Reisinger, F. Flödl, P. Austrian Federal Ministry of Science, Research and Economy and the National Foundation of Research, Technology and Development 2020 http://dx.doi.org/10.1007/s10750-019-04173-1 http://link.springer.com/content/pdf/10.1007/s10750-019-04173-1.pdf http://link.springer.com/article/10.1007/s10750-019-04173-1/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Hydrobiologia volume 847, issue 4, page 1139-1158 ISSN 0018-8158 1573-5117 Aquatic Science journal-article 2020 crspringernat https://doi.org/10.1007/s10750-019-04173-1 2022-01-04T16:37:46Z Abstract The presented study investigates the evolution of artificial gravel placements for Atlantic salmon and sea trout in Aurlandselva in Western Norway. Various monitoring methods have been applied including (i) quantifying the spatial extent and dynamics of spawning sites over the monitoring period, (ii) grain size distributions as well as (iii) applying numerical hydraulic and sediment transport modelling with the aim to test the predictability of such numerical tools. The spawning sites were not clogged by fine sediments, but were reshaped due to scouring and sediment transport. The scouring resulted in a volume loss of the gravel banks between 32 and 95% in the monitoring period of 5 years. The application of hydrodynamic-numerical modelling, however, showed that the modelling methods were not sufficient to predict erosion of the gravel or the site. The study showed that the areas are sensitive especially to local scale micro-topographical roughness elements. The complex three-dimensional hydraulic processes and the coarse substrate in the non-fluvial river environment makes it impracticable for multi-dimensional modelling to predict dynamics of gravel. A novel sediment criterion was introduced to estimate the near-bottom turbulence by relating the d m of introduced gravel compared to the d 90 of the bed surface substrate composition. Article in Journal/Newspaper Atlantic salmon Salmo salar Springer Nature (via Crossref) Norway Hydrobiologia 847 4 1139 1158 |
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Springer Nature (via Crossref) |
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crspringernat |
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English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Hauer, C. Pulg, U. Reisinger, F. Flödl, P. Evolution of artificial spawning sites for Atlantic salmon (Salmo salar) and sea trout (Salmo trutta): field studies and numerical modelling in Aurland, Norway |
topic_facet |
Aquatic Science |
description |
Abstract The presented study investigates the evolution of artificial gravel placements for Atlantic salmon and sea trout in Aurlandselva in Western Norway. Various monitoring methods have been applied including (i) quantifying the spatial extent and dynamics of spawning sites over the monitoring period, (ii) grain size distributions as well as (iii) applying numerical hydraulic and sediment transport modelling with the aim to test the predictability of such numerical tools. The spawning sites were not clogged by fine sediments, but were reshaped due to scouring and sediment transport. The scouring resulted in a volume loss of the gravel banks between 32 and 95% in the monitoring period of 5 years. The application of hydrodynamic-numerical modelling, however, showed that the modelling methods were not sufficient to predict erosion of the gravel or the site. The study showed that the areas are sensitive especially to local scale micro-topographical roughness elements. The complex three-dimensional hydraulic processes and the coarse substrate in the non-fluvial river environment makes it impracticable for multi-dimensional modelling to predict dynamics of gravel. A novel sediment criterion was introduced to estimate the near-bottom turbulence by relating the d m of introduced gravel compared to the d 90 of the bed surface substrate composition. |
author2 |
Austrian Federal Ministry of Science, Research and Economy and the National Foundation of Research, Technology and Development |
format |
Article in Journal/Newspaper |
author |
Hauer, C. Pulg, U. Reisinger, F. Flödl, P. |
author_facet |
Hauer, C. Pulg, U. Reisinger, F. Flödl, P. |
author_sort |
Hauer, C. |
title |
Evolution of artificial spawning sites for Atlantic salmon (Salmo salar) and sea trout (Salmo trutta): field studies and numerical modelling in Aurland, Norway |
title_short |
Evolution of artificial spawning sites for Atlantic salmon (Salmo salar) and sea trout (Salmo trutta): field studies and numerical modelling in Aurland, Norway |
title_full |
Evolution of artificial spawning sites for Atlantic salmon (Salmo salar) and sea trout (Salmo trutta): field studies and numerical modelling in Aurland, Norway |
title_fullStr |
Evolution of artificial spawning sites for Atlantic salmon (Salmo salar) and sea trout (Salmo trutta): field studies and numerical modelling in Aurland, Norway |
title_full_unstemmed |
Evolution of artificial spawning sites for Atlantic salmon (Salmo salar) and sea trout (Salmo trutta): field studies and numerical modelling in Aurland, Norway |
title_sort |
evolution of artificial spawning sites for atlantic salmon (salmo salar) and sea trout (salmo trutta): field studies and numerical modelling in aurland, norway |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1007/s10750-019-04173-1 http://link.springer.com/content/pdf/10.1007/s10750-019-04173-1.pdf http://link.springer.com/article/10.1007/s10750-019-04173-1/fulltext.html |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Hydrobiologia volume 847, issue 4, page 1139-1158 ISSN 0018-8158 1573-5117 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s10750-019-04173-1 |
container_title |
Hydrobiologia |
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847 |
container_issue |
4 |
container_start_page |
1139 |
op_container_end_page |
1158 |
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1766362113924661248 |