Effect of enhanced pCO2 levels on the production of dissolved organic carbon and transparent exopolymer particles in short-term bioassay experiments
It has been proposed that increasing levels of pCO2 in the surface ocean will lead to more partitioning of the organic carbon fixed by marine primary production into the dissolved rather than the particulate fraction. This process may result in enhanced accumulation of dissolved organic carbon (DOC)...
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Format: | Dataset |
Language: | English |
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PANGAEA
2014
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.837464 https://doi.org/10.1594/PANGAEA.837464 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.837464 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Alkalinity total Aragonite saturation state Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved organic Carbonate ion Carbonate system computation flag Carbon dioxide Chlorophyll a Coast and continental shelf Coulometric titration D366_E1 D366_E2 D366_E3 D366_E4 D366_E5 Entire community Event label EXP Experiment Flag Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Identification Laboratory experiment Nitrate North Atlantic OA-ICC Ocean Acidification International Coordination Centre Open ocean Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Pelagos pH Phosphate Phytoplankton Potentiometric titration Salinity Silicate Temperate Temperature water |
spellingShingle |
Alkalinity total Aragonite saturation state Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved organic Carbonate ion Carbonate system computation flag Carbon dioxide Chlorophyll a Coast and continental shelf Coulometric titration D366_E1 D366_E2 D366_E3 D366_E4 D366_E5 Entire community Event label EXP Experiment Flag Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Identification Laboratory experiment Nitrate North Atlantic OA-ICC Ocean Acidification International Coordination Centre Open ocean Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Pelagos pH Phosphate Phytoplankton Potentiometric titration Salinity Silicate Temperate Temperature water MacGilchrist, G A Shi, T Tyrrell, Toby Richier, Sophie Moore, C M Dumousseaud, C Achterberg, Eric Pieter Effect of enhanced pCO2 levels on the production of dissolved organic carbon and transparent exopolymer particles in short-term bioassay experiments |
topic_facet |
Alkalinity total Aragonite saturation state Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved organic Carbonate ion Carbonate system computation flag Carbon dioxide Chlorophyll a Coast and continental shelf Coulometric titration D366_E1 D366_E2 D366_E3 D366_E4 D366_E5 Entire community Event label EXP Experiment Flag Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Identification Laboratory experiment Nitrate North Atlantic OA-ICC Ocean Acidification International Coordination Centre Open ocean Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Pelagos pH Phosphate Phytoplankton Potentiometric titration Salinity Silicate Temperate Temperature water |
description |
It has been proposed that increasing levels of pCO2 in the surface ocean will lead to more partitioning of the organic carbon fixed by marine primary production into the dissolved rather than the particulate fraction. This process may result in enhanced accumulation of dissolved organic carbon (DOC) in the surface ocean and/or concurrent accumulation of transparent exopolymer particles (TEPs), with important implications for the functioning of the marine carbon cycle. We investigated this in shipboard bioassay experiments that considered the effect of four different pCO2 scenarios (ambient, 550, 750 and 1000 µatm) on unamended natural phytoplankton communities from a range of locations in the northwest European shelf seas. The environmental settings, in terms of nutrient availability, phytoplankton community structure and growth conditions, varied considerably between locations. We did not observe any strong or consistent effect of pCO2 on DOC production. There was a significant but highly variable effect of pCO2 on the production of TEPs. In three of the five experiments, variation of TEP production between pCO2 treatments was caused by the effect of pCO2 on phytoplankton growth rather than a direct effect on TEP production. In one of the five experiments, there was evidence of enhanced TEP production at high pCO2 (twice as much production over the 96 h incubation period in the 750 matm treatment compared with the ambient treatment) independent of indirect effects, as hypothesised by previous studies. Our results suggest that the environmental setting of experiments (community structure, nutrient availability and occurrence of phytoplankton growth) is a key factor determining the TEP response to pCO2 perturbations. |
format |
Dataset |
author |
MacGilchrist, G A Shi, T Tyrrell, Toby Richier, Sophie Moore, C M Dumousseaud, C Achterberg, Eric Pieter |
author_facet |
MacGilchrist, G A Shi, T Tyrrell, Toby Richier, Sophie Moore, C M Dumousseaud, C Achterberg, Eric Pieter |
author_sort |
MacGilchrist, G A |
title |
Effect of enhanced pCO2 levels on the production of dissolved organic carbon and transparent exopolymer particles in short-term bioassay experiments |
title_short |
Effect of enhanced pCO2 levels on the production of dissolved organic carbon and transparent exopolymer particles in short-term bioassay experiments |
title_full |
Effect of enhanced pCO2 levels on the production of dissolved organic carbon and transparent exopolymer particles in short-term bioassay experiments |
title_fullStr |
Effect of enhanced pCO2 levels on the production of dissolved organic carbon and transparent exopolymer particles in short-term bioassay experiments |
title_full_unstemmed |
Effect of enhanced pCO2 levels on the production of dissolved organic carbon and transparent exopolymer particles in short-term bioassay experiments |
title_sort |
effect of enhanced pco2 levels on the production of dissolved organic carbon and transparent exopolymer particles in short-term bioassay experiments |
publisher |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.837464 https://doi.org/10.1594/PANGAEA.837464 |
op_coverage |
MEDIAN LATITUDE: 52.991959 * MEDIAN LONGITUDE: -2.776520 * SOUTH-BOUND LATITUDE: 46.202300 * WEST-BOUND LONGITUDE: -7.083500 * NORTH-BOUND LATITUDE: 56.787830 * EAST-BOUND LONGITUDE: 3.158500 * DATE/TIME START: 2011-06-08T02:00:00 * DATE/TIME END: 2011-07-02T02:00:00 * MINIMUM ELEVATION: -12.0 m * MAXIMUM ELEVATION: -5.0 m |
long_lat |
ENVELOPE(-7.083500,3.158500,56.787830,46.202300) |
genre |
North Atlantic Ocean acidification |
genre_facet |
North Atlantic Ocean acidification |
op_relation |
MacGilchrist, G A; Shi, T; Tyrrell, Toby; Richier, Sophie; Moore, C M; Dumousseaud, C; Achterberg, Eric Pieter (2014): Effect of enhanced pCO2 levels on the production of dissolved organic carbon and transparent exopolymer particles in short-term bioassay experiments. Biogeosciences, 11(13), 3695-3706, https://doi.org/10.5194/bg-11-3695-2014 Richier, Sophie; Achterberg, Eric Pieter; Archer, Steve; Bretherton, Laura; Brown, Ian; Clark, Darren; Dumousseaud, C; Holland, Ross J; Hopkins, Frances E; MacGilchrist, G A; Moore, C Mark; Poulton, Alex J; Rees, Andrew; Shi, T; Stinchcombe, Mark Colin; Suggett, David J; Zubkov, Mikhail V; Young, Jeremy; Tyrrell, Toby (2014): Ocean acidification impacts on Sea Surface biology and biogeochemistry in Northwest European Shelf Seas: a high-replicated shipboard approach. British Oceanographic Data Centre, Natural Environment Research Council, https://doi.org/10.5285/f44043b2-b9f0-71f2-e044-000b5de50f38 Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.837464 https://doi.org/10.1594/PANGAEA.837464 |
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.837464 https://doi.org/10.5194/bg-11-3695-2014 https://doi.org/10.5285/f44043b2-b9f0-71f2-e044-000b5de50f38 |
_version_ |
1766137146920402944 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.837464 2023-05-15T17:37:18+02:00 Effect of enhanced pCO2 levels on the production of dissolved organic carbon and transparent exopolymer particles in short-term bioassay experiments MacGilchrist, G A Shi, T Tyrrell, Toby Richier, Sophie Moore, C M Dumousseaud, C Achterberg, Eric Pieter MEDIAN LATITUDE: 52.991959 * MEDIAN LONGITUDE: -2.776520 * SOUTH-BOUND LATITUDE: 46.202300 * WEST-BOUND LONGITUDE: -7.083500 * NORTH-BOUND LATITUDE: 56.787830 * EAST-BOUND LONGITUDE: 3.158500 * DATE/TIME START: 2011-06-08T02:00:00 * DATE/TIME END: 2011-07-02T02:00:00 * MINIMUM ELEVATION: -12.0 m * MAXIMUM ELEVATION: -5.0 m 2014-10-28 text/tab-separated-values, 12066 data points https://doi.pangaea.de/10.1594/PANGAEA.837464 https://doi.org/10.1594/PANGAEA.837464 en eng PANGAEA MacGilchrist, G A; Shi, T; Tyrrell, Toby; Richier, Sophie; Moore, C M; Dumousseaud, C; Achterberg, Eric Pieter (2014): Effect of enhanced pCO2 levels on the production of dissolved organic carbon and transparent exopolymer particles in short-term bioassay experiments. Biogeosciences, 11(13), 3695-3706, https://doi.org/10.5194/bg-11-3695-2014 Richier, Sophie; Achterberg, Eric Pieter; Archer, Steve; Bretherton, Laura; Brown, Ian; Clark, Darren; Dumousseaud, C; Holland, Ross J; Hopkins, Frances E; MacGilchrist, G A; Moore, C Mark; Poulton, Alex J; Rees, Andrew; Shi, T; Stinchcombe, Mark Colin; Suggett, David J; Zubkov, Mikhail V; Young, Jeremy; Tyrrell, Toby (2014): Ocean acidification impacts on Sea Surface biology and biogeochemistry in Northwest European Shelf Seas: a high-replicated shipboard approach. British Oceanographic Data Centre, Natural Environment Research Council, https://doi.org/10.5285/f44043b2-b9f0-71f2-e044-000b5de50f38 Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.837464 https://doi.org/10.1594/PANGAEA.837464 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Alkalinity total Aragonite saturation state Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved organic Carbonate ion Carbonate system computation flag Carbon dioxide Chlorophyll a Coast and continental shelf Coulometric titration D366_E1 D366_E2 D366_E3 D366_E4 D366_E5 Entire community Event label EXP Experiment Flag Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Identification Laboratory experiment Nitrate North Atlantic OA-ICC Ocean Acidification International Coordination Centre Open ocean Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Pelagos pH Phosphate Phytoplankton Potentiometric titration Salinity Silicate Temperate Temperature water Dataset 2014 ftpangaea https://doi.org/10.1594/PANGAEA.837464 https://doi.org/10.5194/bg-11-3695-2014 https://doi.org/10.5285/f44043b2-b9f0-71f2-e044-000b5de50f38 2023-01-20T09:04:12Z It has been proposed that increasing levels of pCO2 in the surface ocean will lead to more partitioning of the organic carbon fixed by marine primary production into the dissolved rather than the particulate fraction. This process may result in enhanced accumulation of dissolved organic carbon (DOC) in the surface ocean and/or concurrent accumulation of transparent exopolymer particles (TEPs), with important implications for the functioning of the marine carbon cycle. We investigated this in shipboard bioassay experiments that considered the effect of four different pCO2 scenarios (ambient, 550, 750 and 1000 µatm) on unamended natural phytoplankton communities from a range of locations in the northwest European shelf seas. The environmental settings, in terms of nutrient availability, phytoplankton community structure and growth conditions, varied considerably between locations. We did not observe any strong or consistent effect of pCO2 on DOC production. There was a significant but highly variable effect of pCO2 on the production of TEPs. In three of the five experiments, variation of TEP production between pCO2 treatments was caused by the effect of pCO2 on phytoplankton growth rather than a direct effect on TEP production. In one of the five experiments, there was evidence of enhanced TEP production at high pCO2 (twice as much production over the 96 h incubation period in the 750 matm treatment compared with the ambient treatment) independent of indirect effects, as hypothesised by previous studies. Our results suggest that the environmental setting of experiments (community structure, nutrient availability and occurrence of phytoplankton growth) is a key factor determining the TEP response to pCO2 perturbations. Dataset North Atlantic Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-7.083500,3.158500,56.787830,46.202300) |