Spatiotemporal Variability of Dimethylsulphoniopropionate on a Fringing Coral Reef : The Role of Reefal Carbonate Chemistry and Environmental Variability
Oceanic pH is projected to decrease by up to 0.5 units by 2100 (a process known as ocean acidification, OA), reducing the calcium carbonate saturation state of the oceans. The coastal ocean is expected to experience periods of even lower carbonate saturation state because of the inherent natural var...
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School of Geographical and Earth Sciences, University of Glasgow, Glasgow, UK
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ftumeauniv:oai:DiVA.org:umu-195866 2023-10-09T21:54:56+02:00 Spatiotemporal Variability of Dimethylsulphoniopropionate on a Fringing Coral Reef : The Role of Reefal Carbonate Chemistry and Environmental Variability Burdett, Heidi L. Donohue, Penelope J. C. Hatton, Angela D. Alwany, Magdy A. Kamenos, Nicholas A. 2013 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-195866 https://doi.org/10.1371/journal.pone.0064651 eng eng School of Geographical and Earth Sciences, University of Glasgow, Glasgow, UK Public Library of Science PLOS ONE, 2013, 8:5, orcid:0000-0003-3434-0807 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-195866 doi:10.1371/journal.pone.0064651 PMID 23724073 ISI:000319733000073 Scopus 2-s2.0-84878408233 info:eu-repo/semantics/openAccess Botany Botanik Geochemistry Geokemi Article in journal info:eu-repo/semantics/article text 2013 ftumeauniv https://doi.org/10.1371/journal.pone.0064651 2023-09-22T13:55:53Z Oceanic pH is projected to decrease by up to 0.5 units by 2100 (a process known as ocean acidification, OA), reducing the calcium carbonate saturation state of the oceans. The coastal ocean is expected to experience periods of even lower carbonate saturation state because of the inherent natural variability of coastal habitats. Thus, in order to accurately project the impact of OA on the coastal ocean, we must first understand its natural variability. The production of dimethylsulphoniopropionate (DMSP) by marine algae and the release of DMSP's breakdown product dimethylsulphide (DMS) are often related to environmental stress. This study investigated the spatiotemporal response of tropical macroalgae (Padina sp., Amphiroa sp. and Turbinaria sp.) and the overlying water column to natural changes in reefal carbonate chemistry. We compared macroalgal intracellular DMSP and water column DMSP+DMS concentrations between the environmentally stable reef crest and environmentally variable reef flat of the fringing Suleman Reef, Egypt, over 45-hour sampling periods. Similar diel patterns were observed throughout: maximum intracellular DMSP and water column DMS/P concentrations were observed at night, coinciding with the time of lowest carbonate saturation state. Spatially, water column DMS/P concentrations were highest over areas dominated by seagrass and macroalgae (dissolved DMS/P) and phytoplankton (particulate DMS/P) rather than corals. This research suggests that macroalgae may use DMSP to maintain metabolic function during periods of low carbonate saturation state. In the reef system, seagrass and macroalgae may be more important benthic producers of dissolved DMS/P than corals. An increase in DMS/P concentrations during periods of low carbonate saturation state may become ecologically important in the future under an OA regime, impacting larval settlement and increasing atmospheric emissions of DMS. Article in Journal/Newspaper Ocean acidification Umeå University: Publications (DiVA) PLoS ONE 8 5 e64651 |
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Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
Botany Botanik Geochemistry Geokemi |
spellingShingle |
Botany Botanik Geochemistry Geokemi Burdett, Heidi L. Donohue, Penelope J. C. Hatton, Angela D. Alwany, Magdy A. Kamenos, Nicholas A. Spatiotemporal Variability of Dimethylsulphoniopropionate on a Fringing Coral Reef : The Role of Reefal Carbonate Chemistry and Environmental Variability |
topic_facet |
Botany Botanik Geochemistry Geokemi |
description |
Oceanic pH is projected to decrease by up to 0.5 units by 2100 (a process known as ocean acidification, OA), reducing the calcium carbonate saturation state of the oceans. The coastal ocean is expected to experience periods of even lower carbonate saturation state because of the inherent natural variability of coastal habitats. Thus, in order to accurately project the impact of OA on the coastal ocean, we must first understand its natural variability. The production of dimethylsulphoniopropionate (DMSP) by marine algae and the release of DMSP's breakdown product dimethylsulphide (DMS) are often related to environmental stress. This study investigated the spatiotemporal response of tropical macroalgae (Padina sp., Amphiroa sp. and Turbinaria sp.) and the overlying water column to natural changes in reefal carbonate chemistry. We compared macroalgal intracellular DMSP and water column DMSP+DMS concentrations between the environmentally stable reef crest and environmentally variable reef flat of the fringing Suleman Reef, Egypt, over 45-hour sampling periods. Similar diel patterns were observed throughout: maximum intracellular DMSP and water column DMS/P concentrations were observed at night, coinciding with the time of lowest carbonate saturation state. Spatially, water column DMS/P concentrations were highest over areas dominated by seagrass and macroalgae (dissolved DMS/P) and phytoplankton (particulate DMS/P) rather than corals. This research suggests that macroalgae may use DMSP to maintain metabolic function during periods of low carbonate saturation state. In the reef system, seagrass and macroalgae may be more important benthic producers of dissolved DMS/P than corals. An increase in DMS/P concentrations during periods of low carbonate saturation state may become ecologically important in the future under an OA regime, impacting larval settlement and increasing atmospheric emissions of DMS. |
format |
Article in Journal/Newspaper |
author |
Burdett, Heidi L. Donohue, Penelope J. C. Hatton, Angela D. Alwany, Magdy A. Kamenos, Nicholas A. |
author_facet |
Burdett, Heidi L. Donohue, Penelope J. C. Hatton, Angela D. Alwany, Magdy A. Kamenos, Nicholas A. |
author_sort |
Burdett, Heidi L. |
title |
Spatiotemporal Variability of Dimethylsulphoniopropionate on a Fringing Coral Reef : The Role of Reefal Carbonate Chemistry and Environmental Variability |
title_short |
Spatiotemporal Variability of Dimethylsulphoniopropionate on a Fringing Coral Reef : The Role of Reefal Carbonate Chemistry and Environmental Variability |
title_full |
Spatiotemporal Variability of Dimethylsulphoniopropionate on a Fringing Coral Reef : The Role of Reefal Carbonate Chemistry and Environmental Variability |
title_fullStr |
Spatiotemporal Variability of Dimethylsulphoniopropionate on a Fringing Coral Reef : The Role of Reefal Carbonate Chemistry and Environmental Variability |
title_full_unstemmed |
Spatiotemporal Variability of Dimethylsulphoniopropionate on a Fringing Coral Reef : The Role of Reefal Carbonate Chemistry and Environmental Variability |
title_sort |
spatiotemporal variability of dimethylsulphoniopropionate on a fringing coral reef : the role of reefal carbonate chemistry and environmental variability |
publisher |
School of Geographical and Earth Sciences, University of Glasgow, Glasgow, UK |
publishDate |
2013 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-195866 https://doi.org/10.1371/journal.pone.0064651 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
PLOS ONE, 2013, 8:5, orcid:0000-0003-3434-0807 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-195866 doi:10.1371/journal.pone.0064651 PMID 23724073 ISI:000319733000073 Scopus 2-s2.0-84878408233 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0064651 |
container_title |
PLoS ONE |
container_volume |
8 |
container_issue |
5 |
container_start_page |
e64651 |
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1779318688066830336 |