Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions
An indoor mesocosm experiment was carried out to investigate the combined effects of ocean acidification and warming on the species composition and biogeochemical element cycling during a winter/spring bloom with a natural phytoplankton assemblage from the Kiel fjord, Germany. The experimental setup...
Published in: | Journal of Plankton Research |
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Language: | English |
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Oxford Univ. Press
2018
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Online Access: | https://oceanrep.geomar.de/id/eprint/43965/ https://oceanrep.geomar.de/id/eprint/43965/1/fby018.pdf https://doi.org/10.1093/plankt/fby018 |
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ftoceanrep:oai:oceanrep.geomar.de:43965 2023-05-15T17:51:41+02:00 Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions Sett, Scarlett Schulz, Kai G. Bach, Lennart T. Riebesell, Ulf 2018-05-29 text https://oceanrep.geomar.de/id/eprint/43965/ https://oceanrep.geomar.de/id/eprint/43965/1/fby018.pdf https://doi.org/10.1093/plankt/fby018 en eng Oxford Univ. Press https://oceanrep.geomar.de/id/eprint/43965/1/fby018.pdf Sett, S., Schulz, K. G., Bach, L. T. and Riebesell, U. (2018) Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions. Open Access Journal of Plankton Research, 40 (4). pp. 391-406. DOI 10.1093/plankt/fby018 <https://doi.org/10.1093/plankt%2Ffby018>. doi:10.1093/plankt/fby018 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed info:eu-repo/semantics/article 2018 ftoceanrep https://doi.org/10.1093/plankt/fby018 2023-04-07T15:40:50Z An indoor mesocosm experiment was carried out to investigate the combined effects of ocean acidification and warming on the species composition and biogeochemical element cycling during a winter/spring bloom with a natural phytoplankton assemblage from the Kiel fjord, Germany. The experimental setup consisted of a "Control" (ambient temperature of similar to 4.8 degrees C and similar to 535 +/- 25 mu atm pCO(2)), a "High-CO2" treatment (ambient temperature and initially 1020 +/- 45 mu atm pCO(2)) and a "Greenhouse" treatment (similar to 8.5 degrees C and initially 990 +/- 60 mu atm pCO(2)). Nutrient replete conditions prevailed at the beginning of the experiment and light was provided at in situ levels upon reaching pCO(2) target levels. A diatom-dominated bloom developed in all treatments with Skeletonema costatum as the dominant species but with an increased abundance and biomass contribution of larger diatom species in the Greenhouse treatment. Conditions in the Greenhouse treatment accelerated bloom development with faster utilization of inorganic nutrients and an earlier peak in phytoplankton biomass compared to the Control and High CO2 but no difference in maximum concentration of particulate organic matter (POM) between treatments. Loss of POM in the Greenhouse treatment, however, was twice as high as in the Control and High CO2 treatment at the end of the experiment, most likely due to an increased proportion of larger diatom species in that treatment. We hypothesize that the combination of warming and acidification can induce shifts in diatom species composition with potential feedbacks on biogeochemical element cycling. Article in Journal/Newspaper Ocean acidification OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Journal of Plankton Research 40 4 391 406 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
An indoor mesocosm experiment was carried out to investigate the combined effects of ocean acidification and warming on the species composition and biogeochemical element cycling during a winter/spring bloom with a natural phytoplankton assemblage from the Kiel fjord, Germany. The experimental setup consisted of a "Control" (ambient temperature of similar to 4.8 degrees C and similar to 535 +/- 25 mu atm pCO(2)), a "High-CO2" treatment (ambient temperature and initially 1020 +/- 45 mu atm pCO(2)) and a "Greenhouse" treatment (similar to 8.5 degrees C and initially 990 +/- 60 mu atm pCO(2)). Nutrient replete conditions prevailed at the beginning of the experiment and light was provided at in situ levels upon reaching pCO(2) target levels. A diatom-dominated bloom developed in all treatments with Skeletonema costatum as the dominant species but with an increased abundance and biomass contribution of larger diatom species in the Greenhouse treatment. Conditions in the Greenhouse treatment accelerated bloom development with faster utilization of inorganic nutrients and an earlier peak in phytoplankton biomass compared to the Control and High CO2 but no difference in maximum concentration of particulate organic matter (POM) between treatments. Loss of POM in the Greenhouse treatment, however, was twice as high as in the Control and High CO2 treatment at the end of the experiment, most likely due to an increased proportion of larger diatom species in that treatment. We hypothesize that the combination of warming and acidification can induce shifts in diatom species composition with potential feedbacks on biogeochemical element cycling. |
format |
Article in Journal/Newspaper |
author |
Sett, Scarlett Schulz, Kai G. Bach, Lennart T. Riebesell, Ulf |
spellingShingle |
Sett, Scarlett Schulz, Kai G. Bach, Lennart T. Riebesell, Ulf Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions |
author_facet |
Sett, Scarlett Schulz, Kai G. Bach, Lennart T. Riebesell, Ulf |
author_sort |
Sett, Scarlett |
title |
Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions |
title_short |
Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions |
title_full |
Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions |
title_fullStr |
Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions |
title_full_unstemmed |
Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions |
title_sort |
shift towards larger diatoms in a natural phytoplankton assemblage under combined high-co2 and warming conditions |
publisher |
Oxford Univ. Press |
publishDate |
2018 |
url |
https://oceanrep.geomar.de/id/eprint/43965/ https://oceanrep.geomar.de/id/eprint/43965/1/fby018.pdf https://doi.org/10.1093/plankt/fby018 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://oceanrep.geomar.de/id/eprint/43965/1/fby018.pdf Sett, S., Schulz, K. G., Bach, L. T. and Riebesell, U. (2018) Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions. Open Access Journal of Plankton Research, 40 (4). pp. 391-406. DOI 10.1093/plankt/fby018 <https://doi.org/10.1093/plankt%2Ffby018>. doi:10.1093/plankt/fby018 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1093/plankt/fby018 |
container_title |
Journal of Plankton Research |
container_volume |
40 |
container_issue |
4 |
container_start_page |
391 |
op_container_end_page |
406 |
_version_ |
1766158902848651264 |