Variability and drivers of carbonate chemistry at shellfish aquaculture sites in the Salish Sea, British Columbia
Ocean acidification (OA) reduces seawater pH and calcium carbonate saturation states (Ω), which can have detrimental effects on calcifying organisms such as shellfish. Nearshore areas, where shellfish aquaculture typically operates, have limited data available to characterize variability in key ocea...
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Copernicus Publications
2024
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00072374 2024-04-21T08:09:39+00:00 Variability and drivers of carbonate chemistry at shellfish aquaculture sites in the Salish Sea, British Columbia Simpson, Eleanor Ianson, Debby Kohfeld, Karen E. Franco, Ana C. Covert, Paul A. Davelaar, Marty Perreault, Yves 2024-03 electronic https://doi.org/10.5194/bg-21-1323-2024 https://noa.gwlb.de/receive/cop_mods_00072374 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070591/bg-21-1323-2024.pdf https://bg.copernicus.org/articles/21/1323/2024/bg-21-1323-2024.pdf eng eng Copernicus Publications Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-21-1323-2024 https://noa.gwlb.de/receive/cop_mods_00072374 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070591/bg-21-1323-2024.pdf https://bg.copernicus.org/articles/21/1323/2024/bg-21-1323-2024.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/bg-21-1323-2024 2024-03-26T15:13:22Z Ocean acidification (OA) reduces seawater pH and calcium carbonate saturation states (Ω), which can have detrimental effects on calcifying organisms such as shellfish. Nearshore areas, where shellfish aquaculture typically operates, have limited data available to characterize variability in key ocean acidification parameters pH and Ω, as samples are costly to analyze and difficult to collect. This study collected samples from four nearshore locations at shellfish aquaculture sites on the Canadian Pacific coast from 2015–2018 and analyzed them for dissolved inorganic carbon (DIC) and total alkalinity (TA), enabling the calculation of pH and Ω for all seasons. The study evaluated the diel and seasonal variability in carbonate chemistry conditions at each location and estimated the contribution of drivers to seasonal and diel changes in pH and Ω. Nearshore locations experience a greater range of variability and seasonal and daily changes in pH and Ω than open waters. Biological uptake of DIC by phytoplankton is the major driver of seasonal and diel changes in pH and Ω at our nearshore sites. The study found that freshwater is not a key driver of diel variability, despite large changes over the day in some locations. We find that during summer at mid-depth (5–20 m), where it is cooler, pH, Ω, and oxygen conditions are still favourable for shellfish. These results suggest that if shellfish are hung lower in the water column, they may avoid high sea surface temperatures, without inducing OA and oxygen stress. Article in Journal/Newspaper Ocean acidification Niedersächsisches Online-Archiv NOA Biogeosciences 21 5 1323 1353 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Simpson, Eleanor Ianson, Debby Kohfeld, Karen E. Franco, Ana C. Covert, Paul A. Davelaar, Marty Perreault, Yves Variability and drivers of carbonate chemistry at shellfish aquaculture sites in the Salish Sea, British Columbia |
topic_facet |
article Verlagsveröffentlichung |
description |
Ocean acidification (OA) reduces seawater pH and calcium carbonate saturation states (Ω), which can have detrimental effects on calcifying organisms such as shellfish. Nearshore areas, where shellfish aquaculture typically operates, have limited data available to characterize variability in key ocean acidification parameters pH and Ω, as samples are costly to analyze and difficult to collect. This study collected samples from four nearshore locations at shellfish aquaculture sites on the Canadian Pacific coast from 2015–2018 and analyzed them for dissolved inorganic carbon (DIC) and total alkalinity (TA), enabling the calculation of pH and Ω for all seasons. The study evaluated the diel and seasonal variability in carbonate chemistry conditions at each location and estimated the contribution of drivers to seasonal and diel changes in pH and Ω. Nearshore locations experience a greater range of variability and seasonal and daily changes in pH and Ω than open waters. Biological uptake of DIC by phytoplankton is the major driver of seasonal and diel changes in pH and Ω at our nearshore sites. The study found that freshwater is not a key driver of diel variability, despite large changes over the day in some locations. We find that during summer at mid-depth (5–20 m), where it is cooler, pH, Ω, and oxygen conditions are still favourable for shellfish. These results suggest that if shellfish are hung lower in the water column, they may avoid high sea surface temperatures, without inducing OA and oxygen stress. |
format |
Article in Journal/Newspaper |
author |
Simpson, Eleanor Ianson, Debby Kohfeld, Karen E. Franco, Ana C. Covert, Paul A. Davelaar, Marty Perreault, Yves |
author_facet |
Simpson, Eleanor Ianson, Debby Kohfeld, Karen E. Franco, Ana C. Covert, Paul A. Davelaar, Marty Perreault, Yves |
author_sort |
Simpson, Eleanor |
title |
Variability and drivers of carbonate chemistry at shellfish aquaculture sites in the Salish Sea, British Columbia |
title_short |
Variability and drivers of carbonate chemistry at shellfish aquaculture sites in the Salish Sea, British Columbia |
title_full |
Variability and drivers of carbonate chemistry at shellfish aquaculture sites in the Salish Sea, British Columbia |
title_fullStr |
Variability and drivers of carbonate chemistry at shellfish aquaculture sites in the Salish Sea, British Columbia |
title_full_unstemmed |
Variability and drivers of carbonate chemistry at shellfish aquaculture sites in the Salish Sea, British Columbia |
title_sort |
variability and drivers of carbonate chemistry at shellfish aquaculture sites in the salish sea, british columbia |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/bg-21-1323-2024 https://noa.gwlb.de/receive/cop_mods_00072374 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070591/bg-21-1323-2024.pdf https://bg.copernicus.org/articles/21/1323/2024/bg-21-1323-2024.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-21-1323-2024 https://noa.gwlb.de/receive/cop_mods_00072374 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00070591/bg-21-1323-2024.pdf https://bg.copernicus.org/articles/21/1323/2024/bg-21-1323-2024.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-21-1323-2024 |
container_title |
Biogeosciences |
container_volume |
21 |
container_issue |
5 |
container_start_page |
1323 |
op_container_end_page |
1353 |
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