Amelioration of ocean acidification and warming effects through physiological buffering of a macroalgae
Abstract Concurrent anthropogenic global climate change and ocean acidification are expected to have a negative impact on calcifying marine organisms. While knowledge of biological responses of organisms to oceanic stress has emerged from single‐species experiments, these do not capture ecologically...
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ftdoajarticles:oai:doaj.org/article:276a2920f7954cfa9eb52c262ea48911 2023-05-15T17:49:51+02:00 Amelioration of ocean acidification and warming effects through physiological buffering of a macroalgae Steve S. Doo Aero Leplastrier Alexia Graba‐Landry Januar Harianto Ross A. Coleman Maria Byrne 2020-08-01T00:00:00Z https://doi.org/10.1002/ece3.6552 https://doaj.org/article/276a2920f7954cfa9eb52c262ea48911 EN eng Wiley https://doi.org/10.1002/ece3.6552 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.6552 https://doaj.org/article/276a2920f7954cfa9eb52c262ea48911 Ecology and Evolution, Vol 10, Iss 15, Pp 8465-8475 (2020) large benthic foraminifera macroalgae ocean acidification ocean warming physiological buffering species interaction Ecology QH540-549.5 article 2020 ftdoajarticles https://doi.org/10.1002/ece3.6552 2022-12-31T16:24:04Z Abstract Concurrent anthropogenic global climate change and ocean acidification are expected to have a negative impact on calcifying marine organisms. While knowledge of biological responses of organisms to oceanic stress has emerged from single‐species experiments, these do not capture ecologically relevant scenarios where the potential for multi‐organism physiological interactions is assessed. Marine algae provide an interesting case study, as their photosynthetic activity elevates pH in the surrounding microenvironment, potentially buffering more acidic conditions for associated epiphytes. We present findings that indicate increased tolerance of an important epiphytic foraminifera, Marginopora vertebralis, to the effects of increased temperature (±3°C) and pCO2 (~1,000 µatm) when associated with its common algal host, Laurencia intricata. Specimens of M. vertebralis were incubated for 15 days in flow‐through aquaria simulating current and end‐of‐century temperature and pH conditions. Physiological measures of growth (change in wet weight), calcification (measured change in total alkalinity in closed bottles), photochemical efficiency (Fv/Fm), total chlorophyll, photosynthesis (oxygen flux), and respiration were determined. When incubated in isolation, M. vertebralis exhibited reduced growth in end‐of‐century projections of ocean acidification conditions, while calcification rates were lowest in the high‐temperature, low‐pH treatment. Interestingly, association with L. intricata ameliorated these stress effects with the growth and calcification rates of M. vertebralis being similar to those observed in ambient conditions. Total chlorophyll levels in M. vertebralis decreased when in association with L. intricata, while maximum photochemical efficiency increased in ambient conditions. Net production estimates remained similar between M. vertebralis in isolation and in association with L. intricata, although both production and respiration rates of M. vertebralis were significantly higher when associated with L. ... Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Ecology and Evolution 10 15 8465 8475 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
large benthic foraminifera macroalgae ocean acidification ocean warming physiological buffering species interaction Ecology QH540-549.5 |
spellingShingle |
large benthic foraminifera macroalgae ocean acidification ocean warming physiological buffering species interaction Ecology QH540-549.5 Steve S. Doo Aero Leplastrier Alexia Graba‐Landry Januar Harianto Ross A. Coleman Maria Byrne Amelioration of ocean acidification and warming effects through physiological buffering of a macroalgae |
topic_facet |
large benthic foraminifera macroalgae ocean acidification ocean warming physiological buffering species interaction Ecology QH540-549.5 |
description |
Abstract Concurrent anthropogenic global climate change and ocean acidification are expected to have a negative impact on calcifying marine organisms. While knowledge of biological responses of organisms to oceanic stress has emerged from single‐species experiments, these do not capture ecologically relevant scenarios where the potential for multi‐organism physiological interactions is assessed. Marine algae provide an interesting case study, as their photosynthetic activity elevates pH in the surrounding microenvironment, potentially buffering more acidic conditions for associated epiphytes. We present findings that indicate increased tolerance of an important epiphytic foraminifera, Marginopora vertebralis, to the effects of increased temperature (±3°C) and pCO2 (~1,000 µatm) when associated with its common algal host, Laurencia intricata. Specimens of M. vertebralis were incubated for 15 days in flow‐through aquaria simulating current and end‐of‐century temperature and pH conditions. Physiological measures of growth (change in wet weight), calcification (measured change in total alkalinity in closed bottles), photochemical efficiency (Fv/Fm), total chlorophyll, photosynthesis (oxygen flux), and respiration were determined. When incubated in isolation, M. vertebralis exhibited reduced growth in end‐of‐century projections of ocean acidification conditions, while calcification rates were lowest in the high‐temperature, low‐pH treatment. Interestingly, association with L. intricata ameliorated these stress effects with the growth and calcification rates of M. vertebralis being similar to those observed in ambient conditions. Total chlorophyll levels in M. vertebralis decreased when in association with L. intricata, while maximum photochemical efficiency increased in ambient conditions. Net production estimates remained similar between M. vertebralis in isolation and in association with L. intricata, although both production and respiration rates of M. vertebralis were significantly higher when associated with L. ... |
format |
Article in Journal/Newspaper |
author |
Steve S. Doo Aero Leplastrier Alexia Graba‐Landry Januar Harianto Ross A. Coleman Maria Byrne |
author_facet |
Steve S. Doo Aero Leplastrier Alexia Graba‐Landry Januar Harianto Ross A. Coleman Maria Byrne |
author_sort |
Steve S. Doo |
title |
Amelioration of ocean acidification and warming effects through physiological buffering of a macroalgae |
title_short |
Amelioration of ocean acidification and warming effects through physiological buffering of a macroalgae |
title_full |
Amelioration of ocean acidification and warming effects through physiological buffering of a macroalgae |
title_fullStr |
Amelioration of ocean acidification and warming effects through physiological buffering of a macroalgae |
title_full_unstemmed |
Amelioration of ocean acidification and warming effects through physiological buffering of a macroalgae |
title_sort |
amelioration of ocean acidification and warming effects through physiological buffering of a macroalgae |
publisher |
Wiley |
publishDate |
2020 |
url |
https://doi.org/10.1002/ece3.6552 https://doaj.org/article/276a2920f7954cfa9eb52c262ea48911 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Ecology and Evolution, Vol 10, Iss 15, Pp 8465-8475 (2020) |
op_relation |
https://doi.org/10.1002/ece3.6552 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.6552 https://doaj.org/article/276a2920f7954cfa9eb52c262ea48911 |
op_doi |
https://doi.org/10.1002/ece3.6552 |
container_title |
Ecology and Evolution |
container_volume |
10 |
container_issue |
15 |
container_start_page |
8465 |
op_container_end_page |
8475 |
_version_ |
1766156346296631296 |