Basin-scale estimates of pelagic and coral reef calcification in the Red Sea and Western Indian Ocean.
Basin-scale calcification rates are highly important in assessments of the global oceanic carbon cycle. Traditionally, such estimates were based on rates of sedimentation measured with sediment traps or in deep sea cores. Here we estimated CaCO3 precipitation rates in the surface water of the Red Se...
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Proceedings of the National Academy of Sciences
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ftunivcam:oai:www.repository.cam.ac.uk:1810/284484 2024-02-04T10:03:36+01:00 Basin-scale estimates of pelagic and coral reef calcification in the Red Sea and Western Indian Ocean. Steiner, Zvi Erez, Jonathan Shemesh, Aldo Yam, Ruth Katz, Amitai Lazar, Boaz 2014-11-18 Print-Electronic application/pdf https://www.repository.cam.ac.uk/handle/1810/284484 https://doi.org/10.17863/CAM.31860 eng eng Proceedings of the National Academy of Sciences http://dx.doi.org/10.1073/pnas.1414323111 Proc Natl Acad Sci U S A https://www.repository.cam.ac.uk/handle/1810/284484 doi:10.17863/CAM.31860 Publisher's own licence CaCO3 precipitation Rayleigh distillation Red Sea Sr/Ca alkalinity Animal Structures Animals Anthozoa Calcification Physiologic Calcium Calcium Carbonate Carbon Dioxide Chemical Precipitation Coral Reefs Feasibility Studies Foraminifera Geologic Sediments Greenhouse Effect Hydrogen-Ion Concentration Indian Ocean Plankton Salinity Seawater Solubility Strontium Article 2014 ftunivcam https://doi.org/10.17863/CAM.31860 2024-01-11T23:23:31Z Basin-scale calcification rates are highly important in assessments of the global oceanic carbon cycle. Traditionally, such estimates were based on rates of sedimentation measured with sediment traps or in deep sea cores. Here we estimated CaCO3 precipitation rates in the surface water of the Red Sea from total alkalinity depletion along their axial flow using the water flux in the straits of Bab el Mandeb. The relative contribution of coral reefs and open sea plankton were calculated by fitting a Rayleigh distillation model to the increase in the strontium to calcium ratio. We estimate the net amount of CaCO3 precipitated in the Red Sea to be 7.3 ± 0.4·10(10) kg·y(-1) of which 80 ± 5% is by pelagic calcareous plankton and 20 ± 5% is by the flourishing coastal coral reefs. This estimate for pelagic calcification rate is up to 40% higher than published sedimentary CaCO3 accumulation rates for the region. The calcification rate of the Gulf of Aden was estimated by the Rayleigh model to be ∼1/2 of the Red Sea, and in the northwestern Indian Ocean, it was smaller than our detection limit. The results of this study suggest that variations of major ions on a basin scale may potentially help in assessing long-term effects of ocean acidification on carbonate deposition by marine organisms. Article in Journal/Newspaper Ocean acidification Apollo - University of Cambridge Repository Indian |
institution |
Open Polar |
collection |
Apollo - University of Cambridge Repository |
op_collection_id |
ftunivcam |
language |
English |
topic |
CaCO3 precipitation Rayleigh distillation Red Sea Sr/Ca alkalinity Animal Structures Animals Anthozoa Calcification Physiologic Calcium Calcium Carbonate Carbon Dioxide Chemical Precipitation Coral Reefs Feasibility Studies Foraminifera Geologic Sediments Greenhouse Effect Hydrogen-Ion Concentration Indian Ocean Plankton Salinity Seawater Solubility Strontium |
spellingShingle |
CaCO3 precipitation Rayleigh distillation Red Sea Sr/Ca alkalinity Animal Structures Animals Anthozoa Calcification Physiologic Calcium Calcium Carbonate Carbon Dioxide Chemical Precipitation Coral Reefs Feasibility Studies Foraminifera Geologic Sediments Greenhouse Effect Hydrogen-Ion Concentration Indian Ocean Plankton Salinity Seawater Solubility Strontium Steiner, Zvi Erez, Jonathan Shemesh, Aldo Yam, Ruth Katz, Amitai Lazar, Boaz Basin-scale estimates of pelagic and coral reef calcification in the Red Sea and Western Indian Ocean. |
topic_facet |
CaCO3 precipitation Rayleigh distillation Red Sea Sr/Ca alkalinity Animal Structures Animals Anthozoa Calcification Physiologic Calcium Calcium Carbonate Carbon Dioxide Chemical Precipitation Coral Reefs Feasibility Studies Foraminifera Geologic Sediments Greenhouse Effect Hydrogen-Ion Concentration Indian Ocean Plankton Salinity Seawater Solubility Strontium |
description |
Basin-scale calcification rates are highly important in assessments of the global oceanic carbon cycle. Traditionally, such estimates were based on rates of sedimentation measured with sediment traps or in deep sea cores. Here we estimated CaCO3 precipitation rates in the surface water of the Red Sea from total alkalinity depletion along their axial flow using the water flux in the straits of Bab el Mandeb. The relative contribution of coral reefs and open sea plankton were calculated by fitting a Rayleigh distillation model to the increase in the strontium to calcium ratio. We estimate the net amount of CaCO3 precipitated in the Red Sea to be 7.3 ± 0.4·10(10) kg·y(-1) of which 80 ± 5% is by pelagic calcareous plankton and 20 ± 5% is by the flourishing coastal coral reefs. This estimate for pelagic calcification rate is up to 40% higher than published sedimentary CaCO3 accumulation rates for the region. The calcification rate of the Gulf of Aden was estimated by the Rayleigh model to be ∼1/2 of the Red Sea, and in the northwestern Indian Ocean, it was smaller than our detection limit. The results of this study suggest that variations of major ions on a basin scale may potentially help in assessing long-term effects of ocean acidification on carbonate deposition by marine organisms. |
format |
Article in Journal/Newspaper |
author |
Steiner, Zvi Erez, Jonathan Shemesh, Aldo Yam, Ruth Katz, Amitai Lazar, Boaz |
author_facet |
Steiner, Zvi Erez, Jonathan Shemesh, Aldo Yam, Ruth Katz, Amitai Lazar, Boaz |
author_sort |
Steiner, Zvi |
title |
Basin-scale estimates of pelagic and coral reef calcification in the Red Sea and Western Indian Ocean. |
title_short |
Basin-scale estimates of pelagic and coral reef calcification in the Red Sea and Western Indian Ocean. |
title_full |
Basin-scale estimates of pelagic and coral reef calcification in the Red Sea and Western Indian Ocean. |
title_fullStr |
Basin-scale estimates of pelagic and coral reef calcification in the Red Sea and Western Indian Ocean. |
title_full_unstemmed |
Basin-scale estimates of pelagic and coral reef calcification in the Red Sea and Western Indian Ocean. |
title_sort |
basin-scale estimates of pelagic and coral reef calcification in the red sea and western indian ocean. |
publisher |
Proceedings of the National Academy of Sciences |
publishDate |
2014 |
url |
https://www.repository.cam.ac.uk/handle/1810/284484 https://doi.org/10.17863/CAM.31860 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://www.repository.cam.ac.uk/handle/1810/284484 doi:10.17863/CAM.31860 |
op_rights |
Publisher's own licence |
op_doi |
https://doi.org/10.17863/CAM.31860 |
_version_ |
1789971076326883328 |