Spatio-temporal dynamics in the dissolved nutrient waste plume from Norwegian salmon cage aquaculture
The aim of this study was to define the waste plume dynamics around a salmon farm in Norway. Systematic water sampling and numerical modeling were implemented to define nutrient concentrations in the upper water column at long-term (seasonal) and short-term (between and within days) time scales. Nut...
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ftsintef:oai:sintef.brage.unit.no:11250/2568094 2023-05-15T15:32:46+02:00 Spatio-temporal dynamics in the dissolved nutrient waste plume from Norwegian salmon cage aquaculture Jansen, Henrice M Broch, Ole Jacob Bannister, Raymond Cranford, Peter J. Handå, Aleksander Husa, Vivian Jiang, Zengjie Strohmeier, Tore Strand, Øivind 2018-09-27 application/pdf http://hdl.handle.net/11250/2568094 https://doi.org/10.3354/aei00276 eng eng Notur/NorStore: NN2967k Aquaculture Environment Interactions. 2018, 10 385-399. urn:issn:1869-215X http://hdl.handle.net/11250/2568094 https://doi.org/10.3354/aei00276 cristin:1620286 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © The authors 2018. Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are un - restricted. Authors and original publication must be credited. CC-BY 385-399 10 Aquaculture Environment Interactions Atlantic salmon Farm scale Nutrients Nitrogen Integrated multi-trophic aquaculture IMTA Pelagic Environmental impact Journal article Peer reviewed 2018 ftsintef https://doi.org/10.3354/aei00276 2021-08-04T12:00:44Z The aim of this study was to define the waste plume dynamics around a salmon farm in Norway. Systematic water sampling and numerical modeling were implemented to define nutrient concentrations in the upper water column at long-term (seasonal) and short-term (between and within days) time scales. Nutrient enhancement was observed for ammonium only, while the concentrations of orthophosphate and organic wastes were never higher than the background values. The spatial magnitude of cage effluent dispersion was limited. Empirical results detected enhanced concentrations up to 100 m down-current of the farm when fish biomass was high. Model results showed that the zone of influence could occasionally reach to >1000 m. In the first year of production, when fish biomass was low, no enhancement was detected, and in April and September of the following year, average ammonium concentrations were respectively 0.2 and 0.8 μM above the background concentrations. Taking the ambient seasonal variability into account, this resulted in 1.6 times higher concentrations for both sampling months. The measured short-term temporal variability in nutrient concentrations near the cages varied up to 2 times from day to day and were 3.5 times higher in the evening compared to the morning. As seasonal investigations were performed in the morning, maximum enhancement was likely underestimated. The rapid decrease in nutrient concentrations with increasing distance from the cages suggests that the farm studied here is currently not causing significant degradation of surface water quality. Results of this study contribute to evaluating the potential for ecological mitigation of waste nutrients and provide directions for design of optimized integrated multi-trophic aquaculture facilities. publishedVersion Article in Journal/Newspaper Atlantic salmon SINTEF Open (Brage) Norway Imta ENVELOPE(156.945,156.945,61.792,61.792) Aquaculture Environment Interactions 10 385 399 |
institution |
Open Polar |
collection |
SINTEF Open (Brage) |
op_collection_id |
ftsintef |
language |
English |
topic |
Atlantic salmon Farm scale Nutrients Nitrogen Integrated multi-trophic aquaculture IMTA Pelagic Environmental impact |
spellingShingle |
Atlantic salmon Farm scale Nutrients Nitrogen Integrated multi-trophic aquaculture IMTA Pelagic Environmental impact Jansen, Henrice M Broch, Ole Jacob Bannister, Raymond Cranford, Peter J. Handå, Aleksander Husa, Vivian Jiang, Zengjie Strohmeier, Tore Strand, Øivind Spatio-temporal dynamics in the dissolved nutrient waste plume from Norwegian salmon cage aquaculture |
topic_facet |
Atlantic salmon Farm scale Nutrients Nitrogen Integrated multi-trophic aquaculture IMTA Pelagic Environmental impact |
description |
The aim of this study was to define the waste plume dynamics around a salmon farm in Norway. Systematic water sampling and numerical modeling were implemented to define nutrient concentrations in the upper water column at long-term (seasonal) and short-term (between and within days) time scales. Nutrient enhancement was observed for ammonium only, while the concentrations of orthophosphate and organic wastes were never higher than the background values. The spatial magnitude of cage effluent dispersion was limited. Empirical results detected enhanced concentrations up to 100 m down-current of the farm when fish biomass was high. Model results showed that the zone of influence could occasionally reach to >1000 m. In the first year of production, when fish biomass was low, no enhancement was detected, and in April and September of the following year, average ammonium concentrations were respectively 0.2 and 0.8 μM above the background concentrations. Taking the ambient seasonal variability into account, this resulted in 1.6 times higher concentrations for both sampling months. The measured short-term temporal variability in nutrient concentrations near the cages varied up to 2 times from day to day and were 3.5 times higher in the evening compared to the morning. As seasonal investigations were performed in the morning, maximum enhancement was likely underestimated. The rapid decrease in nutrient concentrations with increasing distance from the cages suggests that the farm studied here is currently not causing significant degradation of surface water quality. Results of this study contribute to evaluating the potential for ecological mitigation of waste nutrients and provide directions for design of optimized integrated multi-trophic aquaculture facilities. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Jansen, Henrice M Broch, Ole Jacob Bannister, Raymond Cranford, Peter J. Handå, Aleksander Husa, Vivian Jiang, Zengjie Strohmeier, Tore Strand, Øivind |
author_facet |
Jansen, Henrice M Broch, Ole Jacob Bannister, Raymond Cranford, Peter J. Handå, Aleksander Husa, Vivian Jiang, Zengjie Strohmeier, Tore Strand, Øivind |
author_sort |
Jansen, Henrice M |
title |
Spatio-temporal dynamics in the dissolved nutrient waste plume from Norwegian salmon cage aquaculture |
title_short |
Spatio-temporal dynamics in the dissolved nutrient waste plume from Norwegian salmon cage aquaculture |
title_full |
Spatio-temporal dynamics in the dissolved nutrient waste plume from Norwegian salmon cage aquaculture |
title_fullStr |
Spatio-temporal dynamics in the dissolved nutrient waste plume from Norwegian salmon cage aquaculture |
title_full_unstemmed |
Spatio-temporal dynamics in the dissolved nutrient waste plume from Norwegian salmon cage aquaculture |
title_sort |
spatio-temporal dynamics in the dissolved nutrient waste plume from norwegian salmon cage aquaculture |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2568094 https://doi.org/10.3354/aei00276 |
long_lat |
ENVELOPE(156.945,156.945,61.792,61.792) |
geographic |
Norway Imta |
geographic_facet |
Norway Imta |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
385-399 10 Aquaculture Environment Interactions |
op_relation |
Notur/NorStore: NN2967k Aquaculture Environment Interactions. 2018, 10 385-399. urn:issn:1869-215X http://hdl.handle.net/11250/2568094 https://doi.org/10.3354/aei00276 cristin:1620286 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © The authors 2018. Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are un - restricted. Authors and original publication must be credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3354/aei00276 |
container_title |
Aquaculture Environment Interactions |
container_volume |
10 |
container_start_page |
385 |
op_container_end_page |
399 |
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1766363261679173632 |