Dolomite-rich coralline algae in reefs resist dissolution in acidified conditions
Coral reef ecosystems develop best in high-flow environments but their fragile frameworks are also vulnerable to high wave energy. Wave-resistant algal rims, predominantly made up of the crustose coralline algae (CCA) Porolithon onkodes and P. pachydermum, are therefore critical structural elements...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.825092 2024-09-15T18:27:52+00:00 Dolomite-rich coralline algae in reefs resist dissolution in acidified conditions Nash, Merinda C Opdyke, Bradley N Troitzsch, U Russell, Bayden D Adey, W H Kato, A Diaz-Pulido, Guillermo Brent, C Gardner, M Prichard, J Kline, David I 2013 text/tab-separated-values, 801 data points https://doi.pangaea.de/10.1594/PANGAEA.825092 https://doi.org/10.1594/PANGAEA.825092 en eng PANGAEA Lavigne, Héloïse; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4 [webpage]. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.825092 https://doi.org/10.1594/PANGAEA.825092 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Nash, Merinda C; Opdyke, Bradley N; Troitzsch, U; Russell, Bayden D; Adey, W H; Kato, A; Diaz-Pulido, Guillermo; Brent, C; Gardner, M; Prichard, J; Kline, David I (2012): Dolomite-rich coralline algae in reefs resist dissolution in acidified conditions. Nature Climate Change, 3(3), 268-272, https://doi.org/10.1038/nclimate1760 Alkalinity total Aragonite Aragonite saturation state Benthos Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcification/Dissolution Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Coast and continental shelf Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Group Laboratory experiment Macroalgae Magnesium carbonate magnesite OA-ICC Ocean Acidification International Coordination Centre Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) pH Plantae Porolithon onkodes Potentiometric Potentiometric titration Replicate Rhodophyta Salinity Sample code/label Single species South Pacific Species Temperate Temperature water Treatment Weight loss dataset 2013 ftpangaea https://doi.org/10.1594/PANGAEA.82509210.1038/nclimate1760 2024-07-24T02:31:32Z Coral reef ecosystems develop best in high-flow environments but their fragile frameworks are also vulnerable to high wave energy. Wave-resistant algal rims, predominantly made up of the crustose coralline algae (CCA) Porolithon onkodes and P. pachydermum, are therefore critical structural elements for the survival of many shallow coral reefs. Concerns are growing about the susceptibility of CCA to ocean acidification because CCA Mg-calcite skeletons are more susceptible to dissolution under low pH conditions than coral aragonite skeletons. However, the recent discovery of dolomite (Mg0.5Ca0.5(CO3)), a stable carbonate, in P. onkodes cells necessitates a reappraisal of the impacts of ocean acidification on these CCA. Here we show, using a dissolution experiment, that dried dolomite-rich CCA have 6-10 times lower rates of dissolution than predominantly Mg-calcite CCA in both high-CO2 (~ 700 ppm) and control (~ 380 ppm) environments, respectively. We reveal this stabilizing mechanism to be a combination of reduced porosity due to dolomite infilling and selective dissolution of other carbonate minerals. Physical break-up proceeds by dissolution of Mg-calcite walls until the dolomitized cell eventually drops out intact. Dolomite-rich CCA frameworks are common in shallow coral reefs globally and our results suggest that it is likely that they will continue to provide protection and stability for coral reef frameworks as CO2 rises. Dataset Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Alkalinity total Aragonite Aragonite saturation state Benthos Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcification/Dissolution Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Coast and continental shelf Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Group Laboratory experiment Macroalgae Magnesium carbonate magnesite OA-ICC Ocean Acidification International Coordination Centre Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) pH Plantae Porolithon onkodes Potentiometric Potentiometric titration Replicate Rhodophyta Salinity Sample code/label Single species South Pacific Species Temperate Temperature water Treatment Weight loss |
spellingShingle |
Alkalinity total Aragonite Aragonite saturation state Benthos Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcification/Dissolution Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Coast and continental shelf Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Group Laboratory experiment Macroalgae Magnesium carbonate magnesite OA-ICC Ocean Acidification International Coordination Centre Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) pH Plantae Porolithon onkodes Potentiometric Potentiometric titration Replicate Rhodophyta Salinity Sample code/label Single species South Pacific Species Temperate Temperature water Treatment Weight loss Nash, Merinda C Opdyke, Bradley N Troitzsch, U Russell, Bayden D Adey, W H Kato, A Diaz-Pulido, Guillermo Brent, C Gardner, M Prichard, J Kline, David I Dolomite-rich coralline algae in reefs resist dissolution in acidified conditions |
topic_facet |
Alkalinity total Aragonite Aragonite saturation state Benthos Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcification/Dissolution Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Coast and continental shelf Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Group Laboratory experiment Macroalgae Magnesium carbonate magnesite OA-ICC Ocean Acidification International Coordination Centre Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) pH Plantae Porolithon onkodes Potentiometric Potentiometric titration Replicate Rhodophyta Salinity Sample code/label Single species South Pacific Species Temperate Temperature water Treatment Weight loss |
description |
Coral reef ecosystems develop best in high-flow environments but their fragile frameworks are also vulnerable to high wave energy. Wave-resistant algal rims, predominantly made up of the crustose coralline algae (CCA) Porolithon onkodes and P. pachydermum, are therefore critical structural elements for the survival of many shallow coral reefs. Concerns are growing about the susceptibility of CCA to ocean acidification because CCA Mg-calcite skeletons are more susceptible to dissolution under low pH conditions than coral aragonite skeletons. However, the recent discovery of dolomite (Mg0.5Ca0.5(CO3)), a stable carbonate, in P. onkodes cells necessitates a reappraisal of the impacts of ocean acidification on these CCA. Here we show, using a dissolution experiment, that dried dolomite-rich CCA have 6-10 times lower rates of dissolution than predominantly Mg-calcite CCA in both high-CO2 (~ 700 ppm) and control (~ 380 ppm) environments, respectively. We reveal this stabilizing mechanism to be a combination of reduced porosity due to dolomite infilling and selective dissolution of other carbonate minerals. Physical break-up proceeds by dissolution of Mg-calcite walls until the dolomitized cell eventually drops out intact. Dolomite-rich CCA frameworks are common in shallow coral reefs globally and our results suggest that it is likely that they will continue to provide protection and stability for coral reef frameworks as CO2 rises. |
format |
Dataset |
author |
Nash, Merinda C Opdyke, Bradley N Troitzsch, U Russell, Bayden D Adey, W H Kato, A Diaz-Pulido, Guillermo Brent, C Gardner, M Prichard, J Kline, David I |
author_facet |
Nash, Merinda C Opdyke, Bradley N Troitzsch, U Russell, Bayden D Adey, W H Kato, A Diaz-Pulido, Guillermo Brent, C Gardner, M Prichard, J Kline, David I |
author_sort |
Nash, Merinda C |
title |
Dolomite-rich coralline algae in reefs resist dissolution in acidified conditions |
title_short |
Dolomite-rich coralline algae in reefs resist dissolution in acidified conditions |
title_full |
Dolomite-rich coralline algae in reefs resist dissolution in acidified conditions |
title_fullStr |
Dolomite-rich coralline algae in reefs resist dissolution in acidified conditions |
title_full_unstemmed |
Dolomite-rich coralline algae in reefs resist dissolution in acidified conditions |
title_sort |
dolomite-rich coralline algae in reefs resist dissolution in acidified conditions |
publisher |
PANGAEA |
publishDate |
2013 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.825092 https://doi.org/10.1594/PANGAEA.825092 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Supplement to: Nash, Merinda C; Opdyke, Bradley N; Troitzsch, U; Russell, Bayden D; Adey, W H; Kato, A; Diaz-Pulido, Guillermo; Brent, C; Gardner, M; Prichard, J; Kline, David I (2012): Dolomite-rich coralline algae in reefs resist dissolution in acidified conditions. Nature Climate Change, 3(3), 268-272, https://doi.org/10.1038/nclimate1760 |
op_relation |
Lavigne, Héloïse; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4 [webpage]. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.825092 https://doi.org/10.1594/PANGAEA.825092 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.82509210.1038/nclimate1760 |
_version_ |
1810469137565089792 |