Evaluating the suitability of RAS culture environment for rainbow trout and Atlantic salmon: A ten-year progression of applied research and technological advancements to optimize water quality and fish performance

Over the last several decades, recirculating aquaculture systems (RAS) have become a viable technology for the production of high-value food-fish. In Norway, for example, many Atlantic salmon smolt farms are now using RAS, and there is increased interest and investment in landbased facilities for th...

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Published in:Fisheries Management and Ecology
Main Author: Davidson, John
Format: Doctoral or Postdoctoral Thesis
Language:English
Published: The University of Bergen 2020
Subjects:
Norway
Atlantic salmon
Online Access:https://hdl.handle.net/11250/2825402
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description Over the last several decades, recirculating aquaculture systems (RAS) have become a viable technology for the production of high-value food-fish. In Norway, for example, many Atlantic salmon smolt farms are now using RAS, and there is increased interest and investment in landbased facilities for the production of larger smolts, post-smolts, and, in some cases, market-size Atlantic salmon. Similar trends are taking shape in other countries, including the United States where multi-million-dollar land-based salmon and trout facilities are being planned and constructed with several already in operation. RAS continuously recycle water through specialized unit processes that recondition the flow to support intensive fish production. Core advantages of RAS include substantial water savings, diminished waste discharge, and increased flexibility for siting facilities near major seafood markets; however, a critical tradeoff is the accumulation of dissolved nutrients, metals, and compounds that can negatively affect fish health and performance in the absence of proper water treatment and system management techniques. Therefore, research that prioritizes assessment of technologies and operational metrics that optimize the RAS environment has been and will continue to be essential for sustainable industry growth. During my 21-year career as a researcher at The Conservation Fund’s Freshwater Institute, I have focused largely on evaluating the suitability of environmental conditions for salmonid production in RAS. Early research sought to identify accumulating water quality variables of concern, followed by studies designed to establish safe water quality thresholds for salmonids, namely nitrate. Assessment of specialized technologies for water quality control was intertwined with these objectives and is now at the forefront of today’s research. As the use of RAS for intensive salmonid production is still a relatively new frontier, novel questions continue to arise and evolve with increasing RAS scale, adoption of new ...
format Doctoral or Postdoctoral Thesis
author Davidson, John
spellingShingle Davidson, John
Evaluating the suitability of RAS culture environment for rainbow trout and Atlantic salmon: A ten-year progression of applied research and technological advancements to optimize water quality and fish performance
author_facet Davidson, John
author_sort Davidson, John
title Evaluating the suitability of RAS culture environment for rainbow trout and Atlantic salmon: A ten-year progression of applied research and technological advancements to optimize water quality and fish performance
title_short Evaluating the suitability of RAS culture environment for rainbow trout and Atlantic salmon: A ten-year progression of applied research and technological advancements to optimize water quality and fish performance
title_full Evaluating the suitability of RAS culture environment for rainbow trout and Atlantic salmon: A ten-year progression of applied research and technological advancements to optimize water quality and fish performance
title_fullStr Evaluating the suitability of RAS culture environment for rainbow trout and Atlantic salmon: A ten-year progression of applied research and technological advancements to optimize water quality and fish performance
title_full_unstemmed Evaluating the suitability of RAS culture environment for rainbow trout and Atlantic salmon: A ten-year progression of applied research and technological advancements to optimize water quality and fish performance
title_sort evaluating the suitability of ras culture environment for rainbow trout and atlantic salmon: a ten-year progression of applied research and technological advancements to optimize water quality and fish performance
publisher The University of Bergen
publishDate 2020
url https://hdl.handle.net/11250/2825402
geographic Norway
geographic_facet Norway
genre Atlantic salmon
genre_facet Atlantic salmon
op_relation Paper 1: Davidson, J., Good, C., Welsh, C., Summerfelt, S., 2011a. Abnormal swimming behavior and increased deformities in rainbow trout Oncorhynchus mykiss cultured in low exchange recirculating aquaculture systems. Aquacultural Engineering 45, 109-117. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaeng.2011.08.005
Paper 2: Davidson, J., Good, C., Welsh, C., Summerfelt, S., 2011b. The effects of ozone and water exchange rates on water quality and rainbow trout Oncorhynchus mykiss performance in replicated water recirculating systems. Aquacultural Engineering 44, 80-96. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaeng.2011.04.001
Paper 3: Davidson, J., Good, C., Welsh, C., Summerfelt, S., 2014. Comparing the effects of high vs. low nitrate on the health, performance, and welfare of juvenile rainbow trout Oncorhynchus mykiss within water recirculating aquaculture systems. Aquacultural Engineering 59, 30-40. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaeng.2014.01.003
Paper 4: Davidson, J., Good, C., Russell, C., Summerfelt, S.T., 2017. Evaluating the chronic effects of nitrate on the health and performance of post-smolt Atlantic salmon Salmo salar in freshwater recirculation aquaculture systems. Aquacultural Engineering 79, 1-8. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaeng.2017.08.003
Paper 5: Davidson, J., Summerfelt, S., Straus, D., Good, C., 2019a. Evaluating the effects of prolonged peracetic acid dosing on water quality and rainbow trout Oncorhynchus mykiss performance in recirculation aquaculture systems. Aquacultural Engineering 84, 117-127. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaeng.2018.12.009
Paper 6: Davidson, J., Summerfelt, S., Vinci, B., Schrader, K., Good, C., 2019b. Integrating activated sludge membrane biological reactors with freshwater RAS: Preliminary evaluation of water use, water quality, and rainbow trout Oncorhynchus mykiss performance. Aquacultural Engineering 87, 102022. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaeng.2019.102022
Paper 7: Davidson, J., Summerfelt, S., Espmark, A.M.O., Mota, V., Marancik, D., Early, R., Snead, A. Good, C. 2021. Effects of ozone on post-smolt Atlantic salmon Salmo salar performance, health, and maturation in freshwater recirculation aquaculture systems. Aquaculture 533, 736208. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaculture.2020.736208
https://hdl.handle.net/11250/2825402
op_rights Navngivelse-Ikkekommersiell 4.0 Internasjonal. This item's rights statement or license does not apply to the included articles in the thesis.
http://creativecommons.org/licenses/by-nc/4.0/deed.no
Copyright the author
op_doi https://doi.org/10.1016/j.aquaeng.2011.08.00510.1016/j.aquaeng.2011.04.00110.1016/j.aquaeng.2014.01.00310.1016/j.aquaeng.2017.08.00310.1016/j.aquaeng.2018.12.00910.1016/j.aquaeng.2019.10202210.1016/j.aquaculture.2020.736208
container_title Fisheries Management and Ecology
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spelling ftunivbergen:oai:bora.uib.no:11250/2825402 2023-05-15T15:31:13+02:00 Evaluating the suitability of RAS culture environment for rainbow trout and Atlantic salmon: A ten-year progression of applied research and technological advancements to optimize water quality and fish performance Davidson, John 2020 application/pdf https://hdl.handle.net/11250/2825402 eng eng The University of Bergen Paper 1: Davidson, J., Good, C., Welsh, C., Summerfelt, S., 2011a. Abnormal swimming behavior and increased deformities in rainbow trout Oncorhynchus mykiss cultured in low exchange recirculating aquaculture systems. Aquacultural Engineering 45, 109-117. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaeng.2011.08.005 Paper 2: Davidson, J., Good, C., Welsh, C., Summerfelt, S., 2011b. The effects of ozone and water exchange rates on water quality and rainbow trout Oncorhynchus mykiss performance in replicated water recirculating systems. Aquacultural Engineering 44, 80-96. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaeng.2011.04.001 Paper 3: Davidson, J., Good, C., Welsh, C., Summerfelt, S., 2014. Comparing the effects of high vs. low nitrate on the health, performance, and welfare of juvenile rainbow trout Oncorhynchus mykiss within water recirculating aquaculture systems. Aquacultural Engineering 59, 30-40. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaeng.2014.01.003 Paper 4: Davidson, J., Good, C., Russell, C., Summerfelt, S.T., 2017. Evaluating the chronic effects of nitrate on the health and performance of post-smolt Atlantic salmon Salmo salar in freshwater recirculation aquaculture systems. Aquacultural Engineering 79, 1-8. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaeng.2017.08.003 Paper 5: Davidson, J., Summerfelt, S., Straus, D., Good, C., 2019a. Evaluating the effects of prolonged peracetic acid dosing on water quality and rainbow trout Oncorhynchus mykiss performance in recirculation aquaculture systems. Aquacultural Engineering 84, 117-127. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaeng.2018.12.009 Paper 6: Davidson, J., Summerfelt, S., Vinci, B., Schrader, K., Good, C., 2019b. Integrating activated sludge membrane biological reactors with freshwater RAS: Preliminary evaluation of water use, water quality, and rainbow trout Oncorhynchus mykiss performance. Aquacultural Engineering 87, 102022. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaeng.2019.102022 Paper 7: Davidson, J., Summerfelt, S., Espmark, A.M.O., Mota, V., Marancik, D., Early, R., Snead, A. Good, C. 2021. Effects of ozone on post-smolt Atlantic salmon Salmo salar performance, health, and maturation in freshwater recirculation aquaculture systems. Aquaculture 533, 736208. The article is available in the thesis. The article is also available at: https://doi.org/10.1016/j.aquaculture.2020.736208 https://hdl.handle.net/11250/2825402 Navngivelse-Ikkekommersiell 4.0 Internasjonal. This item's rights statement or license does not apply to the included articles in the thesis. http://creativecommons.org/licenses/by-nc/4.0/deed.no Copyright the author Doctoral thesis 2020 ftunivbergen https://doi.org/10.1016/j.aquaeng.2011.08.00510.1016/j.aquaeng.2011.04.00110.1016/j.aquaeng.2014.01.00310.1016/j.aquaeng.2017.08.00310.1016/j.aquaeng.2018.12.00910.1016/j.aquaeng.2019.10202210.1016/j.aquaculture.2020.736208 2023-03-14T17:38:50Z Over the last several decades, recirculating aquaculture systems (RAS) have become a viable technology for the production of high-value food-fish. In Norway, for example, many Atlantic salmon smolt farms are now using RAS, and there is increased interest and investment in landbased facilities for the production of larger smolts, post-smolts, and, in some cases, market-size Atlantic salmon. Similar trends are taking shape in other countries, including the United States where multi-million-dollar land-based salmon and trout facilities are being planned and constructed with several already in operation. RAS continuously recycle water through specialized unit processes that recondition the flow to support intensive fish production. Core advantages of RAS include substantial water savings, diminished waste discharge, and increased flexibility for siting facilities near major seafood markets; however, a critical tradeoff is the accumulation of dissolved nutrients, metals, and compounds that can negatively affect fish health and performance in the absence of proper water treatment and system management techniques. Therefore, research that prioritizes assessment of technologies and operational metrics that optimize the RAS environment has been and will continue to be essential for sustainable industry growth. During my 21-year career as a researcher at The Conservation Fund’s Freshwater Institute, I have focused largely on evaluating the suitability of environmental conditions for salmonid production in RAS. Early research sought to identify accumulating water quality variables of concern, followed by studies designed to establish safe water quality thresholds for salmonids, namely nitrate. Assessment of specialized technologies for water quality control was intertwined with these objectives and is now at the forefront of today’s research. As the use of RAS for intensive salmonid production is still a relatively new frontier, novel questions continue to arise and evolve with increasing RAS scale, adoption of new ... Doctoral or Postdoctoral Thesis Atlantic salmon University of Bergen: Bergen Open Research Archive (BORA-UiB) Norway Fisheries Management and Ecology 28 5 428 436

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