Temporal variations in suspended particulate waste concentrations at open-water fish farms in Canada and Norway
The co-cultivation of finfish and bivalve filter feeders, with the purpose of recycling solid waste effluents and enhancing aquaculture revenues, has stimulated efforts to characterize particulate waste dynamics at open-water fish farms. Temporal variability in waste concentrations in the water colu...
Published in: | Aquaculture Environment Interactions |
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Language: | English |
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2016
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Online Access: | https://research.wur.nl/en/publications/temporal-variations-in-suspended-particulate-waste-concentrations https://doi.org/10.3354/aei00190 |
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ftunivwagenin:oai:library.wur.nl:wurpubs/542305 2024-01-14T10:05:30+01:00 Temporal variations in suspended particulate waste concentrations at open-water fish farms in Canada and Norway Brager, Lindsay M. Cranford, Peter J. Jansen, H.M. Strand, Øivind 2016 application/pdf https://research.wur.nl/en/publications/temporal-variations-in-suspended-particulate-waste-concentrations https://doi.org/10.3354/aei00190 en eng https://edepot.wur.nl/462961 https://research.wur.nl/en/publications/temporal-variations-in-suspended-particulate-waste-concentrations doi:10.3354/aei00190 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ Wageningen University & Research Aquaculture Environment Interactions 8 (2016) ISSN: 1869-215X Anoplopoma fimbria Aquaculture wastes Integrated multi-trophic aquaculture Salmo salar Suspended particulate matter info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2016 ftunivwagenin https://doi.org/10.3354/aei00190 2023-12-20T23:17:34Z The co-cultivation of finfish and bivalve filter feeders, with the purpose of recycling solid waste effluents and enhancing aquaculture revenues, has stimulated efforts to characterize particulate waste dynamics at open-water fish farms. Temporal variability in waste concentrations in the water column was studied at Atlantic salmon Salmo salar farms in eastern Canada and Norway, and at a sablefish Anoplopoma fimbria farm in western Canada. Turbidity and chlorophyll a (chl a) sensors were used to continuously monitor suspended particulate matter (SPM) and chl a concentrations at various depths and distances to the net-pens. Time-series analysis of these data indicated that SPM fluctuations at the study sites corresponded largely with tidal periodicity and variations in phytoplankton biomass (chl a). ANOVA comparisons of mean SPM levels in water flowing from the direction of net-pens (potential farm influence) and towards the farm (control) generally indicated insignificant effects of fish wastes on SPM levels at the farms (p > 0.05). A significant effect of the farm was detected by an ANOVA comparison of SPM concentrations collected at 5 m depth at farm and reference stations in an oligotrophic fjord, but the calculated level of waste enhancement over the sampling period was extremely small (0.02 mg l−1). Results indicate that temporal variations in SPM concentrations around the open-water fish farms were largely driven by natural processes and that the addition of fish wastes had a negligible effect. Consequently, there is little rationale for introducing commercial extractive species (e.g. bivalves) in open-water integrated multi-trophic aquaculture systems to mitigate the horizontal flux of particulate fish wastes. Article in Journal/Newspaper Atlantic salmon Salmo salar Wageningen UR (University & Research Centre): Digital Library Canada Norway Aquaculture Environment Interactions 8 437 452 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
Anoplopoma fimbria Aquaculture wastes Integrated multi-trophic aquaculture Salmo salar Suspended particulate matter |
spellingShingle |
Anoplopoma fimbria Aquaculture wastes Integrated multi-trophic aquaculture Salmo salar Suspended particulate matter Brager, Lindsay M. Cranford, Peter J. Jansen, H.M. Strand, Øivind Temporal variations in suspended particulate waste concentrations at open-water fish farms in Canada and Norway |
topic_facet |
Anoplopoma fimbria Aquaculture wastes Integrated multi-trophic aquaculture Salmo salar Suspended particulate matter |
description |
The co-cultivation of finfish and bivalve filter feeders, with the purpose of recycling solid waste effluents and enhancing aquaculture revenues, has stimulated efforts to characterize particulate waste dynamics at open-water fish farms. Temporal variability in waste concentrations in the water column was studied at Atlantic salmon Salmo salar farms in eastern Canada and Norway, and at a sablefish Anoplopoma fimbria farm in western Canada. Turbidity and chlorophyll a (chl a) sensors were used to continuously monitor suspended particulate matter (SPM) and chl a concentrations at various depths and distances to the net-pens. Time-series analysis of these data indicated that SPM fluctuations at the study sites corresponded largely with tidal periodicity and variations in phytoplankton biomass (chl a). ANOVA comparisons of mean SPM levels in water flowing from the direction of net-pens (potential farm influence) and towards the farm (control) generally indicated insignificant effects of fish wastes on SPM levels at the farms (p > 0.05). A significant effect of the farm was detected by an ANOVA comparison of SPM concentrations collected at 5 m depth at farm and reference stations in an oligotrophic fjord, but the calculated level of waste enhancement over the sampling period was extremely small (0.02 mg l−1). Results indicate that temporal variations in SPM concentrations around the open-water fish farms were largely driven by natural processes and that the addition of fish wastes had a negligible effect. Consequently, there is little rationale for introducing commercial extractive species (e.g. bivalves) in open-water integrated multi-trophic aquaculture systems to mitigate the horizontal flux of particulate fish wastes. |
format |
Article in Journal/Newspaper |
author |
Brager, Lindsay M. Cranford, Peter J. Jansen, H.M. Strand, Øivind |
author_facet |
Brager, Lindsay M. Cranford, Peter J. Jansen, H.M. Strand, Øivind |
author_sort |
Brager, Lindsay M. |
title |
Temporal variations in suspended particulate waste concentrations at open-water fish farms in Canada and Norway |
title_short |
Temporal variations in suspended particulate waste concentrations at open-water fish farms in Canada and Norway |
title_full |
Temporal variations in suspended particulate waste concentrations at open-water fish farms in Canada and Norway |
title_fullStr |
Temporal variations in suspended particulate waste concentrations at open-water fish farms in Canada and Norway |
title_full_unstemmed |
Temporal variations in suspended particulate waste concentrations at open-water fish farms in Canada and Norway |
title_sort |
temporal variations in suspended particulate waste concentrations at open-water fish farms in canada and norway |
publishDate |
2016 |
url |
https://research.wur.nl/en/publications/temporal-variations-in-suspended-particulate-waste-concentrations https://doi.org/10.3354/aei00190 |
geographic |
Canada Norway |
geographic_facet |
Canada Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Aquaculture Environment Interactions 8 (2016) ISSN: 1869-215X |
op_relation |
https://edepot.wur.nl/462961 https://research.wur.nl/en/publications/temporal-variations-in-suspended-particulate-waste-concentrations doi:10.3354/aei00190 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ Wageningen University & Research |
op_doi |
https://doi.org/10.3354/aei00190 |
container_title |
Aquaculture Environment Interactions |
container_volume |
8 |
container_start_page |
437 |
op_container_end_page |
452 |
_version_ |
1788059868944400384 |