Measurements of microbial processes, dissolution, water and porewater chemistry during experiments on two coral reef sediments
Two coral reef sediments have been subjected to OA scenarios in the laboratory. Sediments from Magnetic Island (year 2014, 3 pCO2 treatments) were investigated under diffusive conditions in flumes. Parameters studied were: oxygen fluxes, porewater pH and oxygen concentrations. Sulfate reduction rate...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.873838 2023-05-15T17:50:38+02:00 Measurements of microbial processes, dissolution, water and porewater chemistry during experiments on two coral reef sediments Fink, Artur den Haan, Joost Chennu, Arjun Uthicke, Sven de Beer, Dirk DATE/TIME START: 2014-01-01T00:00:00 * DATE/TIME END: 2015-05-31T00:00:00 2017-03-22 application/zip, 10 datasets https://doi.pangaea.de/10.1594/PANGAEA.873838 https://doi.org/10.1594/PANGAEA.873838 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.873838 https://doi.org/10.1594/PANGAEA.873838 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Fink, Artur; den Haan, Joost; Chennu, Arjun; Uthicke, Sven; de Beer, Dirk (2017): Ocean Acidification Changes Abiotic Processes but Not Biotic Processes in Coral Reef Sediments. Frontiers in Marine Science, 4, https://doi.org/10.3389/fmars.2017.00073 Benthos BIOACID Biological Impacts of Ocean Acidification Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Coast and continental shelf Community composition and diversity Entire community Laboratory experiment OA-ICC Ocean Acidification International Coordination Centre Other metabolic rates Primary production/Photosynthesis Rocky-shore community South Pacific Tropical Dataset 2017 ftpangaea https://doi.org/10.1594/PANGAEA.873838 https://doi.org/10.3389/fmars.2017.00073 2023-01-20T07:33:55Z Two coral reef sediments have been subjected to OA scenarios in the laboratory. Sediments from Magnetic Island (year 2014, 3 pCO2 treatments) were investigated under diffusive conditions in flumes. Parameters studied were: oxygen fluxes, porewater pH and oxygen concentrations. Sulfate reduction rates and pigment concentrations as a measure for microphytobenthos abundance were measured at the end of the experiment. Sediments from Davies Reef (year 2015, 2 pCO2 treatments) were studied under advective conditions using stirred chambers. Microphytobenthos growth over the experimental period was studied using hyperspectral imaging. Porewater pH profiles were measured in different regions of the chambers. Fluxes of oxygen, total alkalinity (as a measure of CaCO3 dissolution), dissolved organic carbon and nutrients were measured using incubations. Pigment concentrations were measured at the end of the experiment as a measure for microphytobenthos abundance and to calibrate the hyperspectral imaging results. In both experiments, elevated pCO2 did not affect biotic processes. Elevated pCO2 caused an increase in dissolution of the Davies Reef sediments. The porewater pH measurements indicated that this is likely caused by the dissolution of high-magnesium calcites. Dataset Ocean acidification Magnetic Island PANGAEA - Data Publisher for Earth & Environmental Science Magnetic Island ENVELOPE(77.909,77.909,-68.543,-68.543) Pacific |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Benthos BIOACID Biological Impacts of Ocean Acidification Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Coast and continental shelf Community composition and diversity Entire community Laboratory experiment OA-ICC Ocean Acidification International Coordination Centre Other metabolic rates Primary production/Photosynthesis Rocky-shore community South Pacific Tropical |
spellingShingle |
Benthos BIOACID Biological Impacts of Ocean Acidification Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Coast and continental shelf Community composition and diversity Entire community Laboratory experiment OA-ICC Ocean Acidification International Coordination Centre Other metabolic rates Primary production/Photosynthesis Rocky-shore community South Pacific Tropical Fink, Artur den Haan, Joost Chennu, Arjun Uthicke, Sven de Beer, Dirk Measurements of microbial processes, dissolution, water and porewater chemistry during experiments on two coral reef sediments |
topic_facet |
Benthos BIOACID Biological Impacts of Ocean Acidification Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Coast and continental shelf Community composition and diversity Entire community Laboratory experiment OA-ICC Ocean Acidification International Coordination Centre Other metabolic rates Primary production/Photosynthesis Rocky-shore community South Pacific Tropical |
description |
Two coral reef sediments have been subjected to OA scenarios in the laboratory. Sediments from Magnetic Island (year 2014, 3 pCO2 treatments) were investigated under diffusive conditions in flumes. Parameters studied were: oxygen fluxes, porewater pH and oxygen concentrations. Sulfate reduction rates and pigment concentrations as a measure for microphytobenthos abundance were measured at the end of the experiment. Sediments from Davies Reef (year 2015, 2 pCO2 treatments) were studied under advective conditions using stirred chambers. Microphytobenthos growth over the experimental period was studied using hyperspectral imaging. Porewater pH profiles were measured in different regions of the chambers. Fluxes of oxygen, total alkalinity (as a measure of CaCO3 dissolution), dissolved organic carbon and nutrients were measured using incubations. Pigment concentrations were measured at the end of the experiment as a measure for microphytobenthos abundance and to calibrate the hyperspectral imaging results. In both experiments, elevated pCO2 did not affect biotic processes. Elevated pCO2 caused an increase in dissolution of the Davies Reef sediments. The porewater pH measurements indicated that this is likely caused by the dissolution of high-magnesium calcites. |
format |
Dataset |
author |
Fink, Artur den Haan, Joost Chennu, Arjun Uthicke, Sven de Beer, Dirk |
author_facet |
Fink, Artur den Haan, Joost Chennu, Arjun Uthicke, Sven de Beer, Dirk |
author_sort |
Fink, Artur |
title |
Measurements of microbial processes, dissolution, water and porewater chemistry during experiments on two coral reef sediments |
title_short |
Measurements of microbial processes, dissolution, water and porewater chemistry during experiments on two coral reef sediments |
title_full |
Measurements of microbial processes, dissolution, water and porewater chemistry during experiments on two coral reef sediments |
title_fullStr |
Measurements of microbial processes, dissolution, water and porewater chemistry during experiments on two coral reef sediments |
title_full_unstemmed |
Measurements of microbial processes, dissolution, water and porewater chemistry during experiments on two coral reef sediments |
title_sort |
measurements of microbial processes, dissolution, water and porewater chemistry during experiments on two coral reef sediments |
publisher |
PANGAEA |
publishDate |
2017 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.873838 https://doi.org/10.1594/PANGAEA.873838 |
op_coverage |
DATE/TIME START: 2014-01-01T00:00:00 * DATE/TIME END: 2015-05-31T00:00:00 |
long_lat |
ENVELOPE(77.909,77.909,-68.543,-68.543) |
geographic |
Magnetic Island Pacific |
geographic_facet |
Magnetic Island Pacific |
genre |
Ocean acidification Magnetic Island |
genre_facet |
Ocean acidification Magnetic Island |
op_source |
Supplement to: Fink, Artur; den Haan, Joost; Chennu, Arjun; Uthicke, Sven; de Beer, Dirk (2017): Ocean Acidification Changes Abiotic Processes but Not Biotic Processes in Coral Reef Sediments. Frontiers in Marine Science, 4, https://doi.org/10.3389/fmars.2017.00073 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.873838 https://doi.org/10.1594/PANGAEA.873838 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.873838 https://doi.org/10.3389/fmars.2017.00073 |
_version_ |
1766157483286462464 |