Responses of seaweeds that use CO 2 as their sole inorganic carbon source to ocean acidification: differential effects of fluctuating pH but little benefit of CO 2 enrichment
Laboratory studies that test the responses of coastal organisms to ocean acidification (OA) typically use constant pH regimes which do not reflect coastal systems, such as seaweed beds, where pH fluctuates on diel cycles. Seaweeds that use CO 2 as their sole inorganic carbon source (non-carbon dioxi...
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Online Access: | https://doi.org/10.1093/icesjms/fsz070 http://ecite.utas.edu.au/135379 |
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ftunivtasecite:oai:ecite.utas.edu.au:135379 2023-05-15T17:50:34+02:00 Responses of seaweeds that use CO 2 as their sole inorganic carbon source to ocean acidification: differential effects of fluctuating pH but little benefit of CO 2 enrichment Britton, D Mundy, CN McGraw, CM Revill, AT Hurd, CL 2019 https://doi.org/10.1093/icesjms/fsz070 http://ecite.utas.edu.au/135379 en eng Academic Press Ltd Elsevier Science Ltd http://dx.doi.org/10.1093/icesjms/fsz070 Britton, D and Mundy, CN and McGraw, CM and Revill, AT and Hurd, CL, Responses of seaweeds that use CO 2 as their sole inorganic carbon source to ocean acidification: differential effects of fluctuating pH but little benefit of CO 2 enrichment, ICES Journal of Marine Science, 76, (6) pp. 1860-1870. ISSN 1054-3139 (2019) [Refereed Article] http://ecite.utas.edu.au/135379 Biological Sciences Plant biology Phycology (incl. marine grasses) Refereed Article PeerReviewed 2019 ftunivtasecite https://doi.org/10.1093/icesjms/fsz070 2022-07-11T22:16:52Z Laboratory studies that test the responses of coastal organisms to ocean acidification (OA) typically use constant pH regimes which do not reflect coastal systems, such as seaweed beds, where pH fluctuates on diel cycles. Seaweeds that use CO 2 as their sole inorganic carbon source (non-carbon dioxide concentrating mechanism species) are predicted to benefit from OA as concentrations of dissolved CO 2 increase, yet this prediction has rarely been tested, and no studies have tested the effect of pH fluctuations on non-CCM seaweeds. We conducted a laboratory experiment in which two ecologically dominant non-CCM red seaweeds ( Callophyllis lambertii and Plocamium dilatatum ) were exposed to four pH treatments: two static, pH T 8.0 and 7.7 and two fluctuating, pH T 8.0 0.3 and 7.7 0.3. Fluctuating pH reduced growth and net photosynthesis in C. lambertii , while P. dilatatum was unaffected. OA did not benefit P. dilatatum , while C. lambertii displayed elevated net photosynthetic rates. We provide evidence that carbon uptake strategy alone cannot be used as a predictor of seaweed responses to OA and highlight the importance of species-specific sensitivity to [H + ]. We also emphasize the importance of including realistic pH fluctuations in experimental studies on coastal organisms. Article in Journal/Newspaper Ocean acidification eCite UTAS (University of Tasmania) ICES Journal of Marine Science 76 6 1860 1870 |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
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English |
topic |
Biological Sciences Plant biology Phycology (incl. marine grasses) |
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Biological Sciences Plant biology Phycology (incl. marine grasses) Britton, D Mundy, CN McGraw, CM Revill, AT Hurd, CL Responses of seaweeds that use CO 2 as their sole inorganic carbon source to ocean acidification: differential effects of fluctuating pH but little benefit of CO 2 enrichment |
topic_facet |
Biological Sciences Plant biology Phycology (incl. marine grasses) |
description |
Laboratory studies that test the responses of coastal organisms to ocean acidification (OA) typically use constant pH regimes which do not reflect coastal systems, such as seaweed beds, where pH fluctuates on diel cycles. Seaweeds that use CO 2 as their sole inorganic carbon source (non-carbon dioxide concentrating mechanism species) are predicted to benefit from OA as concentrations of dissolved CO 2 increase, yet this prediction has rarely been tested, and no studies have tested the effect of pH fluctuations on non-CCM seaweeds. We conducted a laboratory experiment in which two ecologically dominant non-CCM red seaweeds ( Callophyllis lambertii and Plocamium dilatatum ) were exposed to four pH treatments: two static, pH T 8.0 and 7.7 and two fluctuating, pH T 8.0 0.3 and 7.7 0.3. Fluctuating pH reduced growth and net photosynthesis in C. lambertii , while P. dilatatum was unaffected. OA did not benefit P. dilatatum , while C. lambertii displayed elevated net photosynthetic rates. We provide evidence that carbon uptake strategy alone cannot be used as a predictor of seaweed responses to OA and highlight the importance of species-specific sensitivity to [H + ]. We also emphasize the importance of including realistic pH fluctuations in experimental studies on coastal organisms. |
format |
Article in Journal/Newspaper |
author |
Britton, D Mundy, CN McGraw, CM Revill, AT Hurd, CL |
author_facet |
Britton, D Mundy, CN McGraw, CM Revill, AT Hurd, CL |
author_sort |
Britton, D |
title |
Responses of seaweeds that use CO 2 as their sole inorganic carbon source to ocean acidification: differential effects of fluctuating pH but little benefit of CO 2 enrichment |
title_short |
Responses of seaweeds that use CO 2 as their sole inorganic carbon source to ocean acidification: differential effects of fluctuating pH but little benefit of CO 2 enrichment |
title_full |
Responses of seaweeds that use CO 2 as their sole inorganic carbon source to ocean acidification: differential effects of fluctuating pH but little benefit of CO 2 enrichment |
title_fullStr |
Responses of seaweeds that use CO 2 as their sole inorganic carbon source to ocean acidification: differential effects of fluctuating pH but little benefit of CO 2 enrichment |
title_full_unstemmed |
Responses of seaweeds that use CO 2 as their sole inorganic carbon source to ocean acidification: differential effects of fluctuating pH but little benefit of CO 2 enrichment |
title_sort |
responses of seaweeds that use co 2 as their sole inorganic carbon source to ocean acidification: differential effects of fluctuating ph but little benefit of co 2 enrichment |
publisher |
Academic Press Ltd Elsevier Science Ltd |
publishDate |
2019 |
url |
https://doi.org/10.1093/icesjms/fsz070 http://ecite.utas.edu.au/135379 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://dx.doi.org/10.1093/icesjms/fsz070 Britton, D and Mundy, CN and McGraw, CM and Revill, AT and Hurd, CL, Responses of seaweeds that use CO 2 as their sole inorganic carbon source to ocean acidification: differential effects of fluctuating pH but little benefit of CO 2 enrichment, ICES Journal of Marine Science, 76, (6) pp. 1860-1870. ISSN 1054-3139 (2019) [Refereed Article] http://ecite.utas.edu.au/135379 |
op_doi |
https://doi.org/10.1093/icesjms/fsz070 |
container_title |
ICES Journal of Marine Science |
container_volume |
76 |
container_issue |
6 |
container_start_page |
1860 |
op_container_end_page |
1870 |
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1766157394529746944 |