Seawater carbonate chemistry and community calcification during a Molokai reef (Hawaii) study 2006
The severity of the impact of elevated atmospheric pCO2 to coral reef ecosystems depends, in part, on how seawater pCO2 affects the balance between calcification and dissolution of carbonate sediments. Presently, there are insufficient published data that relate concentrations of pCO2 and CO3 to in...
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ftdatacite:10.1594/pangaea.721997 2023-05-15T17:51:27+02:00 Seawater carbonate chemistry and community calcification during a Molokai reef (Hawaii) study 2006 Yates, Kimberly Kaye Halley, Roberet B 2006 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.721997 https://doi.pangaea.de/10.1594/PANGAEA.721997 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1594/pangaea.743388 https://dx.doi.org/10.5194/bg-3-357-2006 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Benthos Calcification/Dissolution Coast and continental shelf Entire community Field observation Soft-bottom community Tropical DATE/TIME Site Salinity Temperature, water Radiation, photosynthetically active Carbonate system computation flag pH Alkalinity, total Carbon, inorganic, dissolved Carbon dioxide Bicarbonate ion Carbonate ion Partial pressure of carbon dioxide water at sea surface temperature wet air Fugacity of carbon dioxide water at sea surface temperature wet air Aragonite saturation state Calcite saturation state Calcification rate of calcium carbonate Oceanography FOS Earth and related environmental sciences Orion Ross conductivity probe Calculated using seacarb after Nisumaa et al. 2010 pH, Electrode Alkalinity, Gran titration Gran, 1950 Calculated Alkalinity anomaly technique Smith and Key, 1975 European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS European Project on Ocean Acidification EPOCA Dataset dataset 2006 ftdatacite https://doi.org/10.1594/pangaea.721997 https://doi.org/10.1594/pangaea.743388 https://doi.org/10.5194/bg-3-357-2006 2022-02-09T12:04:35Z The severity of the impact of elevated atmospheric pCO2 to coral reef ecosystems depends, in part, on how seawater pCO2 affects the balance between calcification and dissolution of carbonate sediments. Presently, there are insufficient published data that relate concentrations of pCO2 and CO3 to in situ rates of reef calcification in natural settings to accurately predict the impact of elevated atmospheric pCO2 on calcification and dissolution processes. Rates of net calcification and dissolution, CO3 concentrations, and pCO2 were measured, in situ, on patch reefs, bare sand, and coral rubble on the Molokai reef flat in Hawaii. Rates of calcification ranged from 0.03 to 2.30 mmol CaCO3 m**-2 h**-1 and dissolution ranged from -0.05 to -3.3 mmol CaCO3 m**-2 h**-1. Calcification and dissolution varied diurnally with net calcification primarily occurring during the day and net dissolution occurring at night. These data were used to calculate threshold values for pCO2 and CO3 at which rates of calcification and dissolution are equivalent. Results indicate that calcification and dissolution are linearly correlated with both CO3 and pCO2. Threshold pCO2 and CO3 values for individual substrate types showed considerable variation. The average pCO2 threshold value for all substrate types was 654±195 µatm and ranged from 467 to 1003 µatm. The average CO3 threshold value was 152±24 µmol/kg, ranging from 113 to 184 µmol/kg. Ambient seawater measurements of pCO2 and CO3 indicate that CO3 and pCO2 threshold values for all substrate types were both exceeded, simultaneously, 13% of the time at present day atmospheric pCO2 concentrations. It is predicted that atmospheric pCO2 will exceed the average pCO2 threshold value for calcification and dissolution on the Molokai reef flat by the year 2100. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). Dataset Ocean acidification DataCite Metadata Store (German National Library of Science and Technology) Orion ENVELOPE(-59.800,-59.800,-62.438,-62.438) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Benthos Calcification/Dissolution Coast and continental shelf Entire community Field observation Soft-bottom community Tropical DATE/TIME Site Salinity Temperature, water Radiation, photosynthetically active Carbonate system computation flag pH Alkalinity, total Carbon, inorganic, dissolved Carbon dioxide Bicarbonate ion Carbonate ion Partial pressure of carbon dioxide water at sea surface temperature wet air Fugacity of carbon dioxide water at sea surface temperature wet air Aragonite saturation state Calcite saturation state Calcification rate of calcium carbonate Oceanography FOS Earth and related environmental sciences Orion Ross conductivity probe Calculated using seacarb after Nisumaa et al. 2010 pH, Electrode Alkalinity, Gran titration Gran, 1950 Calculated Alkalinity anomaly technique Smith and Key, 1975 European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS European Project on Ocean Acidification EPOCA |
spellingShingle |
Benthos Calcification/Dissolution Coast and continental shelf Entire community Field observation Soft-bottom community Tropical DATE/TIME Site Salinity Temperature, water Radiation, photosynthetically active Carbonate system computation flag pH Alkalinity, total Carbon, inorganic, dissolved Carbon dioxide Bicarbonate ion Carbonate ion Partial pressure of carbon dioxide water at sea surface temperature wet air Fugacity of carbon dioxide water at sea surface temperature wet air Aragonite saturation state Calcite saturation state Calcification rate of calcium carbonate Oceanography FOS Earth and related environmental sciences Orion Ross conductivity probe Calculated using seacarb after Nisumaa et al. 2010 pH, Electrode Alkalinity, Gran titration Gran, 1950 Calculated Alkalinity anomaly technique Smith and Key, 1975 European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS European Project on Ocean Acidification EPOCA Yates, Kimberly Kaye Halley, Roberet B Seawater carbonate chemistry and community calcification during a Molokai reef (Hawaii) study 2006 |
topic_facet |
Benthos Calcification/Dissolution Coast and continental shelf Entire community Field observation Soft-bottom community Tropical DATE/TIME Site Salinity Temperature, water Radiation, photosynthetically active Carbonate system computation flag pH Alkalinity, total Carbon, inorganic, dissolved Carbon dioxide Bicarbonate ion Carbonate ion Partial pressure of carbon dioxide water at sea surface temperature wet air Fugacity of carbon dioxide water at sea surface temperature wet air Aragonite saturation state Calcite saturation state Calcification rate of calcium carbonate Oceanography FOS Earth and related environmental sciences Orion Ross conductivity probe Calculated using seacarb after Nisumaa et al. 2010 pH, Electrode Alkalinity, Gran titration Gran, 1950 Calculated Alkalinity anomaly technique Smith and Key, 1975 European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS European Project on Ocean Acidification EPOCA |
description |
The severity of the impact of elevated atmospheric pCO2 to coral reef ecosystems depends, in part, on how seawater pCO2 affects the balance between calcification and dissolution of carbonate sediments. Presently, there are insufficient published data that relate concentrations of pCO2 and CO3 to in situ rates of reef calcification in natural settings to accurately predict the impact of elevated atmospheric pCO2 on calcification and dissolution processes. Rates of net calcification and dissolution, CO3 concentrations, and pCO2 were measured, in situ, on patch reefs, bare sand, and coral rubble on the Molokai reef flat in Hawaii. Rates of calcification ranged from 0.03 to 2.30 mmol CaCO3 m**-2 h**-1 and dissolution ranged from -0.05 to -3.3 mmol CaCO3 m**-2 h**-1. Calcification and dissolution varied diurnally with net calcification primarily occurring during the day and net dissolution occurring at night. These data were used to calculate threshold values for pCO2 and CO3 at which rates of calcification and dissolution are equivalent. Results indicate that calcification and dissolution are linearly correlated with both CO3 and pCO2. Threshold pCO2 and CO3 values for individual substrate types showed considerable variation. The average pCO2 threshold value for all substrate types was 654±195 µatm and ranged from 467 to 1003 µatm. The average CO3 threshold value was 152±24 µmol/kg, ranging from 113 to 184 µmol/kg. Ambient seawater measurements of pCO2 and CO3 indicate that CO3 and pCO2 threshold values for all substrate types were both exceeded, simultaneously, 13% of the time at present day atmospheric pCO2 concentrations. It is predicted that atmospheric pCO2 will exceed the average pCO2 threshold value for calcification and dissolution on the Molokai reef flat by the year 2100. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). |
format |
Dataset |
author |
Yates, Kimberly Kaye Halley, Roberet B |
author_facet |
Yates, Kimberly Kaye Halley, Roberet B |
author_sort |
Yates, Kimberly Kaye |
title |
Seawater carbonate chemistry and community calcification during a Molokai reef (Hawaii) study 2006 |
title_short |
Seawater carbonate chemistry and community calcification during a Molokai reef (Hawaii) study 2006 |
title_full |
Seawater carbonate chemistry and community calcification during a Molokai reef (Hawaii) study 2006 |
title_fullStr |
Seawater carbonate chemistry and community calcification during a Molokai reef (Hawaii) study 2006 |
title_full_unstemmed |
Seawater carbonate chemistry and community calcification during a Molokai reef (Hawaii) study 2006 |
title_sort |
seawater carbonate chemistry and community calcification during a molokai reef (hawaii) study 2006 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2006 |
url |
https://dx.doi.org/10.1594/pangaea.721997 https://doi.pangaea.de/10.1594/PANGAEA.721997 |
long_lat |
ENVELOPE(-59.800,-59.800,-62.438,-62.438) |
geographic |
Orion |
geographic_facet |
Orion |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://dx.doi.org/10.1594/pangaea.743388 https://dx.doi.org/10.5194/bg-3-357-2006 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.721997 https://doi.org/10.1594/pangaea.743388 https://doi.org/10.5194/bg-3-357-2006 |
_version_ |
1766158609427726336 |