Spatiotemporal Dispersal and Deposition of Fish Farm Wastes: A Model Study from Central Norway
A spatially explicit coupled hydrodynamic-mass transport model system was used to simulate dispersal of particulate organic matter from Atlantic salmon (Salmo salar) farming in central Norway. Model setups of 32 m horizontal resolution were run for periods of up to 650 days for 3 sites of different...
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ftdoajarticles:oai:doaj.org/article:41ebb7648bc343a494d909dc03754805 2023-05-15T15:32:45+02:00 Spatiotemporal Dispersal and Deposition of Fish Farm Wastes: A Model Study from Central Norway Ole J. Broch Ragnhild L. Daae Ingrid H. Ellingsen Raymond Nepstad Eldar Å. Bendiksen Jenny L. Reed Gunnar Senneset 2017-06-01T00:00:00Z https://doi.org/10.3389/fmars.2017.00199 https://doaj.org/article/41ebb7648bc343a494d909dc03754805 EN eng Frontiers Media S.A. http://journal.frontiersin.org/article/10.3389/fmars.2017.00199/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2017.00199 https://doaj.org/article/41ebb7648bc343a494d909dc03754805 Frontiers in Marine Science, Vol 4 (2017) aquaculture effects hydrodynamic modeling fish farm wastes environmental effects depositional model aquaculture dispersal model Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2017 ftdoajarticles https://doi.org/10.3389/fmars.2017.00199 2022-12-31T01:30:18Z A spatially explicit coupled hydrodynamic-mass transport model system was used to simulate dispersal of particulate organic matter from Atlantic salmon (Salmo salar) farming in central Norway. Model setups of 32 m horizontal resolution were run for periods of up to 650 days for 3 sites of different oceanographic characteristics: one fjord location, one medium-exposed location influenced by fjord water, and one coastal location. Records on feed used for each cage at each location were converted to feces released based on a published mass balance model. The results from the simulations were compared with scores from corresponding mandatory benthic surveys (MOM-B) of the sediment layer beneath the farms. The correspondence between simulated and measured thickness of the sediment layer was good, and improved with the inclusion of resuspension processes. At all sites the distribution of organic matter in the bottom layer was non-homogeneous, with significant temporal variation and transport and settling of matter up to at least 0.5 km away from one of the farms. Our results indicate that the monitoring practice used in Norway until now, with a few sediment grab samples taken mainly within the fish farm, may not adequately determine the areal impacts of all salmon farming operations. The patchy distribution of organic matter and the correspondence between simulation and survey results is attributed to the use of full 3D current fields of a high spatiotemporal resolution and a good model for resuspension processes that some previous model studies have failed to properly account for. Article in Journal/Newspaper Atlantic salmon Salmo salar Directory of Open Access Journals: DOAJ Articles Norway Frontiers in Marine Science 4 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
aquaculture effects hydrodynamic modeling fish farm wastes environmental effects depositional model aquaculture dispersal model Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
aquaculture effects hydrodynamic modeling fish farm wastes environmental effects depositional model aquaculture dispersal model Science Q General. Including nature conservation geographical distribution QH1-199.5 Ole J. Broch Ragnhild L. Daae Ingrid H. Ellingsen Raymond Nepstad Eldar Å. Bendiksen Jenny L. Reed Gunnar Senneset Spatiotemporal Dispersal and Deposition of Fish Farm Wastes: A Model Study from Central Norway |
topic_facet |
aquaculture effects hydrodynamic modeling fish farm wastes environmental effects depositional model aquaculture dispersal model Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
A spatially explicit coupled hydrodynamic-mass transport model system was used to simulate dispersal of particulate organic matter from Atlantic salmon (Salmo salar) farming in central Norway. Model setups of 32 m horizontal resolution were run for periods of up to 650 days for 3 sites of different oceanographic characteristics: one fjord location, one medium-exposed location influenced by fjord water, and one coastal location. Records on feed used for each cage at each location were converted to feces released based on a published mass balance model. The results from the simulations were compared with scores from corresponding mandatory benthic surveys (MOM-B) of the sediment layer beneath the farms. The correspondence between simulated and measured thickness of the sediment layer was good, and improved with the inclusion of resuspension processes. At all sites the distribution of organic matter in the bottom layer was non-homogeneous, with significant temporal variation and transport and settling of matter up to at least 0.5 km away from one of the farms. Our results indicate that the monitoring practice used in Norway until now, with a few sediment grab samples taken mainly within the fish farm, may not adequately determine the areal impacts of all salmon farming operations. The patchy distribution of organic matter and the correspondence between simulation and survey results is attributed to the use of full 3D current fields of a high spatiotemporal resolution and a good model for resuspension processes that some previous model studies have failed to properly account for. |
format |
Article in Journal/Newspaper |
author |
Ole J. Broch Ragnhild L. Daae Ingrid H. Ellingsen Raymond Nepstad Eldar Å. Bendiksen Jenny L. Reed Gunnar Senneset |
author_facet |
Ole J. Broch Ragnhild L. Daae Ingrid H. Ellingsen Raymond Nepstad Eldar Å. Bendiksen Jenny L. Reed Gunnar Senneset |
author_sort |
Ole J. Broch |
title |
Spatiotemporal Dispersal and Deposition of Fish Farm Wastes: A Model Study from Central Norway |
title_short |
Spatiotemporal Dispersal and Deposition of Fish Farm Wastes: A Model Study from Central Norway |
title_full |
Spatiotemporal Dispersal and Deposition of Fish Farm Wastes: A Model Study from Central Norway |
title_fullStr |
Spatiotemporal Dispersal and Deposition of Fish Farm Wastes: A Model Study from Central Norway |
title_full_unstemmed |
Spatiotemporal Dispersal and Deposition of Fish Farm Wastes: A Model Study from Central Norway |
title_sort |
spatiotemporal dispersal and deposition of fish farm wastes: a model study from central norway |
publisher |
Frontiers Media S.A. |
publishDate |
2017 |
url |
https://doi.org/10.3389/fmars.2017.00199 https://doaj.org/article/41ebb7648bc343a494d909dc03754805 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Frontiers in Marine Science, Vol 4 (2017) |
op_relation |
http://journal.frontiersin.org/article/10.3389/fmars.2017.00199/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2017.00199 https://doaj.org/article/41ebb7648bc343a494d909dc03754805 |
op_doi |
https://doi.org/10.3389/fmars.2017.00199 |
container_title |
Frontiers in Marine Science |
container_volume |
4 |
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1766363234859745280 |