The relationship between salmon (Salmo salar) farming and cell abundance of harmful algal taxa
The effects of nutrient effluents from fish cage aquaculture are an important eutrophication concern. It has been proposed that marine fish farm derived nutrients have the potential to increase phytoplankton abundance and lead to intensification of Harmful Algal Blooms (HABs), and that these blooms...
Published in: | Harmful Algae |
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Language: | English |
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2023
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Online Access: | https://pure.uhi.ac.uk/en/publications/a8634a4c-2e62-4fe6-aa3f-09fc59d1be61 https://doi.org/10.1016/j.hal.2023.102512 https://linkinghub.elsevier.com/retrieve/pii/S1568988323001385 |
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ftuhipublicatio:oai:pure.atira.dk:publications/a8634a4c-2e62-4fe6-aa3f-09fc59d1be61 2024-02-04T10:04:16+01:00 The relationship between salmon (Salmo salar) farming and cell abundance of harmful algal taxa Gianella, Fatima Burrows, Michael t. Davidson, Keith 2023-11-01 https://pure.uhi.ac.uk/en/publications/a8634a4c-2e62-4fe6-aa3f-09fc59d1be61 https://doi.org/10.1016/j.hal.2023.102512 https://linkinghub.elsevier.com/retrieve/pii/S1568988323001385 eng eng info:eu-repo/semantics/openAccess Gianella , F , Burrows , M T & Davidson , K 2023 , ' The relationship between salmon (Salmo salar) farming and cell abundance of harmful algal taxa ' , Harmful Algae , vol. 129 , 102512 . https://doi.org/10.1016/j.hal.2023.102512 salmon farming Fish Biomass HABs Aquaculture Fjordic sea lochs Eutrophication article 2023 ftuhipublicatio https://doi.org/10.1016/j.hal.2023.102512 2024-01-11T23:21:39Z The effects of nutrient effluents from fish cage aquaculture are an important eutrophication concern. It has been proposed that marine fish farm derived nutrients have the potential to increase phytoplankton abundance and lead to intensification of Harmful Algal Blooms (HABs), and that these blooms may negatively impact both the finfish and the shellfish industry. This study addressed this hypothesis using farmed salmon biomass in Scottish marine waters (as a proxy for nutrient load added to the water column as a consequence of fish farming) cell abundance of HAB taxa that most frequently impact shellfish farms and human health in the region (Dinophysis spp., Alexandrium spp. and Pseudo-nitzschia spp.), and cell abundance of one phytoplankton species of particular concern to the salmon farming industry (Karenia mikimotoi). Data from a 15-year weekly HAB monitoring programme and parallel national monitoring data relating to salmon farm stocking biomass were summarised in 5 km per 5 km aggregation boxes. Linear regression models were used to assess (i) inter-annual variation in cell abundance and total annual farmed salmon biomass; (ii) intra-annual (monthly) variation in harmful phytoplankton cell abundance and salmon biomass; (iii) a further analysis included seasonal effects within the intra-annual analysis. Farmed salmon biomass alone had a non-significant effect on cell abundance of any of the studied phytoplankton taxa. In contrast, a significant effect on cell abundance was found when using location, month or season as the predictive variable. Despite the non-significant impact of fish biomass on phytoplankton counts, the relationship varied seasonally, with a different response of Dinophysis spp. indicating a taxa specific interaction. A possible explanation for the lack of a significant relationship between farmed salmon and harmful phytoplankton cell abundance is that aquaculture farms are generally located in hydrodynamically energetic locations where recurrent flushing likely allows efficient dilution ... Article in Journal/Newspaper Salmo salar University of the Highlands and Islands: Research Database of UHI Harmful Algae 129 102512 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
salmon farming Fish Biomass HABs Aquaculture Fjordic sea lochs Eutrophication |
spellingShingle |
salmon farming Fish Biomass HABs Aquaculture Fjordic sea lochs Eutrophication Gianella, Fatima Burrows, Michael t. Davidson, Keith The relationship between salmon (Salmo salar) farming and cell abundance of harmful algal taxa |
topic_facet |
salmon farming Fish Biomass HABs Aquaculture Fjordic sea lochs Eutrophication |
description |
The effects of nutrient effluents from fish cage aquaculture are an important eutrophication concern. It has been proposed that marine fish farm derived nutrients have the potential to increase phytoplankton abundance and lead to intensification of Harmful Algal Blooms (HABs), and that these blooms may negatively impact both the finfish and the shellfish industry. This study addressed this hypothesis using farmed salmon biomass in Scottish marine waters (as a proxy for nutrient load added to the water column as a consequence of fish farming) cell abundance of HAB taxa that most frequently impact shellfish farms and human health in the region (Dinophysis spp., Alexandrium spp. and Pseudo-nitzschia spp.), and cell abundance of one phytoplankton species of particular concern to the salmon farming industry (Karenia mikimotoi). Data from a 15-year weekly HAB monitoring programme and parallel national monitoring data relating to salmon farm stocking biomass were summarised in 5 km per 5 km aggregation boxes. Linear regression models were used to assess (i) inter-annual variation in cell abundance and total annual farmed salmon biomass; (ii) intra-annual (monthly) variation in harmful phytoplankton cell abundance and salmon biomass; (iii) a further analysis included seasonal effects within the intra-annual analysis. Farmed salmon biomass alone had a non-significant effect on cell abundance of any of the studied phytoplankton taxa. In contrast, a significant effect on cell abundance was found when using location, month or season as the predictive variable. Despite the non-significant impact of fish biomass on phytoplankton counts, the relationship varied seasonally, with a different response of Dinophysis spp. indicating a taxa specific interaction. A possible explanation for the lack of a significant relationship between farmed salmon and harmful phytoplankton cell abundance is that aquaculture farms are generally located in hydrodynamically energetic locations where recurrent flushing likely allows efficient dilution ... |
format |
Article in Journal/Newspaper |
author |
Gianella, Fatima Burrows, Michael t. Davidson, Keith |
author_facet |
Gianella, Fatima Burrows, Michael t. Davidson, Keith |
author_sort |
Gianella, Fatima |
title |
The relationship between salmon (Salmo salar) farming and cell abundance of harmful algal taxa |
title_short |
The relationship between salmon (Salmo salar) farming and cell abundance of harmful algal taxa |
title_full |
The relationship between salmon (Salmo salar) farming and cell abundance of harmful algal taxa |
title_fullStr |
The relationship between salmon (Salmo salar) farming and cell abundance of harmful algal taxa |
title_full_unstemmed |
The relationship between salmon (Salmo salar) farming and cell abundance of harmful algal taxa |
title_sort |
relationship between salmon (salmo salar) farming and cell abundance of harmful algal taxa |
publishDate |
2023 |
url |
https://pure.uhi.ac.uk/en/publications/a8634a4c-2e62-4fe6-aa3f-09fc59d1be61 https://doi.org/10.1016/j.hal.2023.102512 https://linkinghub.elsevier.com/retrieve/pii/S1568988323001385 |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_source |
Gianella , F , Burrows , M T & Davidson , K 2023 , ' The relationship between salmon (Salmo salar) farming and cell abundance of harmful algal taxa ' , Harmful Algae , vol. 129 , 102512 . https://doi.org/10.1016/j.hal.2023.102512 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.hal.2023.102512 |
container_title |
Harmful Algae |
container_volume |
129 |
container_start_page |
102512 |
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1789972420707221504 |