Impact of CO2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms
A mesocosm experiment was conducted to investigate the impact of rising fCO2 on the build-up and decline of organic matter during coastal phytoplankton blooms. Five mesocosms (~38 m³ each) were deployed in the Baltic Sea during spring (2009) and enriched with CO2 to yield a gradient of 355-862 µatm....
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.861365 2023-05-15T17:51:39+02:00 Impact of CO2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms Engel, Anja Piontek, Judith Grossart, Hans-Peter Riebesell, Ulf Schulz, Kai Georg Sperling, Martin LATITUDE: 54.530000 * LONGITUDE: 10.030000 * DATE/TIME START: 2009-05-20T00:00:00 * DATE/TIME END: 2009-07-05T23:59:00 2014-06-10 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.861365 https://doi.org/10.1594/PANGAEA.861365 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.861365 https://doi.org/10.1594/PANGAEA.861365 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY GEOMAR - Helmholtz Centre for Ocean Research Kiel Supplement to: Engel, Anja; Piontek, Judith; Grossart, Hans-Peter; Riebesell, Ulf; Schulz, Kai Georg; Sperling, Martin (2014): Impact of CO2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms. Journal of Plankton Research, 36(3), 641-657, https://doi.org/10.1093/plankt/fbt125 BIOACID Biological Impacts of Ocean Acidification SOPRAN Surface Ocean Processes in the Anthropocene Dataset 2014 ftpangaea https://doi.org/10.1594/PANGAEA.861365 https://doi.org/10.1093/plankt/fbt125 2023-01-20T07:33:45Z A mesocosm experiment was conducted to investigate the impact of rising fCO2 on the build-up and decline of organic matter during coastal phytoplankton blooms. Five mesocosms (~38 m³ each) were deployed in the Baltic Sea during spring (2009) and enriched with CO2 to yield a gradient of 355-862 µatm. Mesocosms were nutrient fertilized initially to induce phytoplankton bloom development. Changes in particulate and dissolved organic matter concentrations, including dissolved high-molecular weight (>1 kDa) combined carbohydrates, dissolved free and combined amino acids as well as transparent exopolymer particles (TEP), were monitored over 21 days together with bacterial abundance, and hydrolytic extracellular enzyme activities. Overall, organic matter followed well-known bloom dynamics in all CO2 treatments alike. At high fCO2, higher dPOC:dPON during bloom rise, and higher TEP concentrations during bloom peak, suggested preferential accumulation of carbon-rich components. TEP concentration at bloom peak was significantly related to subsequent sedimentation of particulate organic matter. Bacterial abundance increased during the bloom and was highest at high fCO2. We conclude that increasing fCO2 supports production and exudation of carbon-rich components, enhancing particle aggregation and settling, but also providing substrate and attachment sites for bacteria. More labile organic carbon and higher bacterial abundance can increase rates of oxygen consumption and may intensify the already high risk of oxygen depletion in coastal seas in the future. Dataset Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(10.030000,10.030000,54.530000,54.530000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
BIOACID Biological Impacts of Ocean Acidification SOPRAN Surface Ocean Processes in the Anthropocene |
spellingShingle |
BIOACID Biological Impacts of Ocean Acidification SOPRAN Surface Ocean Processes in the Anthropocene Engel, Anja Piontek, Judith Grossart, Hans-Peter Riebesell, Ulf Schulz, Kai Georg Sperling, Martin Impact of CO2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms |
topic_facet |
BIOACID Biological Impacts of Ocean Acidification SOPRAN Surface Ocean Processes in the Anthropocene |
description |
A mesocosm experiment was conducted to investigate the impact of rising fCO2 on the build-up and decline of organic matter during coastal phytoplankton blooms. Five mesocosms (~38 m³ each) were deployed in the Baltic Sea during spring (2009) and enriched with CO2 to yield a gradient of 355-862 µatm. Mesocosms were nutrient fertilized initially to induce phytoplankton bloom development. Changes in particulate and dissolved organic matter concentrations, including dissolved high-molecular weight (>1 kDa) combined carbohydrates, dissolved free and combined amino acids as well as transparent exopolymer particles (TEP), were monitored over 21 days together with bacterial abundance, and hydrolytic extracellular enzyme activities. Overall, organic matter followed well-known bloom dynamics in all CO2 treatments alike. At high fCO2, higher dPOC:dPON during bloom rise, and higher TEP concentrations during bloom peak, suggested preferential accumulation of carbon-rich components. TEP concentration at bloom peak was significantly related to subsequent sedimentation of particulate organic matter. Bacterial abundance increased during the bloom and was highest at high fCO2. We conclude that increasing fCO2 supports production and exudation of carbon-rich components, enhancing particle aggregation and settling, but also providing substrate and attachment sites for bacteria. More labile organic carbon and higher bacterial abundance can increase rates of oxygen consumption and may intensify the already high risk of oxygen depletion in coastal seas in the future. |
format |
Dataset |
author |
Engel, Anja Piontek, Judith Grossart, Hans-Peter Riebesell, Ulf Schulz, Kai Georg Sperling, Martin |
author_facet |
Engel, Anja Piontek, Judith Grossart, Hans-Peter Riebesell, Ulf Schulz, Kai Georg Sperling, Martin |
author_sort |
Engel, Anja |
title |
Impact of CO2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms |
title_short |
Impact of CO2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms |
title_full |
Impact of CO2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms |
title_fullStr |
Impact of CO2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms |
title_full_unstemmed |
Impact of CO2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms |
title_sort |
impact of co2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms |
publisher |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.861365 https://doi.org/10.1594/PANGAEA.861365 |
op_coverage |
LATITUDE: 54.530000 * LONGITUDE: 10.030000 * DATE/TIME START: 2009-05-20T00:00:00 * DATE/TIME END: 2009-07-05T23:59:00 |
long_lat |
ENVELOPE(10.030000,10.030000,54.530000,54.530000) |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
GEOMAR - Helmholtz Centre for Ocean Research Kiel Supplement to: Engel, Anja; Piontek, Judith; Grossart, Hans-Peter; Riebesell, Ulf; Schulz, Kai Georg; Sperling, Martin (2014): Impact of CO2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms. Journal of Plankton Research, 36(3), 641-657, https://doi.org/10.1093/plankt/fbt125 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.861365 https://doi.org/10.1594/PANGAEA.861365 |
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.861365 https://doi.org/10.1093/plankt/fbt125 |
_version_ |
1766158868416561152 |