Growth response of calcifying marine epibionts to biogenic pH fluctuations and global ocean acidification scenarios
Abstract In coastal marine environments, physical and biological forces can cause dynamic pH fluctuations from microscale (diffusive boundary layer [DBL]) up to ecosystem‐scale (benthic boundary layer [BBL]). In the face of ocean acidification (OA), such natural pH variations may modulate an organis...
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crwiley:10.1002/lno.11669 2024-06-02T08:12:33+00:00 Growth response of calcifying marine epibionts to biogenic pH fluctuations and global ocean acidification scenarios Johnson, Mildred Jessica Hennigs, Laura Margarethe Sawall, Yvonne Pansch, Christian Wall, Marlene Deutsche Forschungsgemeinschaft 2020 http://dx.doi.org/10.1002/lno.11669 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11669 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11669 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11669 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Limnology and Oceanography volume 66, issue 4, page 1125-1138 ISSN 0024-3590 1939-5590 journal-article 2020 crwiley https://doi.org/10.1002/lno.11669 2024-05-03T11:25:05Z Abstract In coastal marine environments, physical and biological forces can cause dynamic pH fluctuations from microscale (diffusive boundary layer [DBL]) up to ecosystem‐scale (benthic boundary layer [BBL]). In the face of ocean acidification (OA), such natural pH variations may modulate an organism's response to OA by providing temporal refugia. We investigated the effect of pH fluctuations, generated by the brown alga Fucus serratus ' biological activity, on the calcifying epibionts Balanus improvisus and Electra pilosa under OA. For this, both epibionts were grown on inactive and biologically active surfaces and exposed to (1) constant pH scenarios under ambient (pH 8.1) or OA conditions (pH 7.7), or (2) oscillating pH scenarios mimicking BBL conditions at ambient (pH 7.7–8.6) or OA scenarios (pH 7.4–8.2). Furthermore, all treatment combinations were tested at 10°C and 15°C. Against our expectations, OA treatments did not affect epibiont growth under constant or fluctuating (BBL) pH conditions, indicating rather high robustness against predicted OA scenarios. Furthermore, epibiont growth was hampered and not fostered on active surfaces (fluctuating DBL conditions), indicating that fluctuating pH conditions of the DBL with elevated daytime pH do not necessarily provide temporal refugia from OA. In contrast, results indicate that factors other than pH may play larger roles for epibiont growth on macrophytes (e.g., surface characteristics, macrophyte antifouling defense, or dynamics of oxygen and nutrient concentrations). Warming enhanced epibiont growth rates significantly, independently of OA, indicating no synergistic effects of pH treatments and temperature within their natural temperature range. Article in Journal/Newspaper Ocean acidification Wiley Online Library Limnology and Oceanography 66 4 1125 1138 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract In coastal marine environments, physical and biological forces can cause dynamic pH fluctuations from microscale (diffusive boundary layer [DBL]) up to ecosystem‐scale (benthic boundary layer [BBL]). In the face of ocean acidification (OA), such natural pH variations may modulate an organism's response to OA by providing temporal refugia. We investigated the effect of pH fluctuations, generated by the brown alga Fucus serratus ' biological activity, on the calcifying epibionts Balanus improvisus and Electra pilosa under OA. For this, both epibionts were grown on inactive and biologically active surfaces and exposed to (1) constant pH scenarios under ambient (pH 8.1) or OA conditions (pH 7.7), or (2) oscillating pH scenarios mimicking BBL conditions at ambient (pH 7.7–8.6) or OA scenarios (pH 7.4–8.2). Furthermore, all treatment combinations were tested at 10°C and 15°C. Against our expectations, OA treatments did not affect epibiont growth under constant or fluctuating (BBL) pH conditions, indicating rather high robustness against predicted OA scenarios. Furthermore, epibiont growth was hampered and not fostered on active surfaces (fluctuating DBL conditions), indicating that fluctuating pH conditions of the DBL with elevated daytime pH do not necessarily provide temporal refugia from OA. In contrast, results indicate that factors other than pH may play larger roles for epibiont growth on macrophytes (e.g., surface characteristics, macrophyte antifouling defense, or dynamics of oxygen and nutrient concentrations). Warming enhanced epibiont growth rates significantly, independently of OA, indicating no synergistic effects of pH treatments and temperature within their natural temperature range. |
author2 |
Deutsche Forschungsgemeinschaft |
format |
Article in Journal/Newspaper |
author |
Johnson, Mildred Jessica Hennigs, Laura Margarethe Sawall, Yvonne Pansch, Christian Wall, Marlene |
spellingShingle |
Johnson, Mildred Jessica Hennigs, Laura Margarethe Sawall, Yvonne Pansch, Christian Wall, Marlene Growth response of calcifying marine epibionts to biogenic pH fluctuations and global ocean acidification scenarios |
author_facet |
Johnson, Mildred Jessica Hennigs, Laura Margarethe Sawall, Yvonne Pansch, Christian Wall, Marlene |
author_sort |
Johnson, Mildred Jessica |
title |
Growth response of calcifying marine epibionts to biogenic pH fluctuations and global ocean acidification scenarios |
title_short |
Growth response of calcifying marine epibionts to biogenic pH fluctuations and global ocean acidification scenarios |
title_full |
Growth response of calcifying marine epibionts to biogenic pH fluctuations and global ocean acidification scenarios |
title_fullStr |
Growth response of calcifying marine epibionts to biogenic pH fluctuations and global ocean acidification scenarios |
title_full_unstemmed |
Growth response of calcifying marine epibionts to biogenic pH fluctuations and global ocean acidification scenarios |
title_sort |
growth response of calcifying marine epibionts to biogenic ph fluctuations and global ocean acidification scenarios |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/lno.11669 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11669 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11669 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11669 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Limnology and Oceanography volume 66, issue 4, page 1125-1138 ISSN 0024-3590 1939-5590 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/lno.11669 |
container_title |
Limnology and Oceanography |
container_volume |
66 |
container_issue |
4 |
container_start_page |
1125 |
op_container_end_page |
1138 |
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1800759014317883392 |