Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO 2 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...
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Oxford Univ Press
2018
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Online Access: | https://doi.org/10.1093/plankt/fby018 http://ecite.utas.edu.au/133674 |
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ftunivtasecite:oai:ecite.utas.edu.au:133674 2023-05-15T17:51:41+02:00 Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO 2 and warming conditions Sett, S Schulz, KG Bach, LT Riebesell, U 2018 application/pdf https://doi.org/10.1093/plankt/fby018 http://ecite.utas.edu.au/133674 en eng Oxford Univ Press http://ecite.utas.edu.au/133674/1/133674 - Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2.pdf http://dx.doi.org/10.1093/plankt/fby018 Sett, S and Schulz, KG and Bach, LT and Riebesell, U, Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO 2 and warming conditions, Journal of Plankton Research, 40, (4) pp. 391-406. ISSN 0142-7873 (2018) [Refereed Article] http://ecite.utas.edu.au/133674 Earth Sciences Oceanography Biological Oceanography Refereed Article PeerReviewed 2018 ftunivtasecite https://doi.org/10.1093/plankt/fby018 2019-12-13T22:31:25Z 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 ~4.8 C and ~535 25 μatm p CO 2 ), a High-CO 2 treatment (ambient temperature and initially 1020 45 μatm p CO 2 ) and a Greenhouse treatment (~8.5 C and initially 990 60 μatm p CO 2 ). Nutrient replete conditions prevailed at the beginning of the experiment and light was provided at in situ levels upon reaching p CO 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 CO 2 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 CO 2 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 eCite UTAS (University of Tasmania) Journal of Plankton Research 40 4 391 406 |
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Open Polar |
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eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Biological Oceanography |
spellingShingle |
Earth Sciences Oceanography Biological Oceanography Sett, S Schulz, KG Bach, LT Riebesell, U Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO 2 and warming conditions |
topic_facet |
Earth Sciences Oceanography Biological Oceanography |
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 ~4.8 C and ~535 25 μatm p CO 2 ), a High-CO 2 treatment (ambient temperature and initially 1020 45 μatm p CO 2 ) and a Greenhouse treatment (~8.5 C and initially 990 60 μatm p CO 2 ). Nutrient replete conditions prevailed at the beginning of the experiment and light was provided at in situ levels upon reaching p CO 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 CO 2 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 CO 2 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, S Schulz, KG Bach, LT Riebesell, U |
author_facet |
Sett, S Schulz, KG Bach, LT Riebesell, U |
author_sort |
Sett, S |
title |
Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO 2 and warming conditions |
title_short |
Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO 2 and warming conditions |
title_full |
Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO 2 and warming conditions |
title_fullStr |
Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO 2 and warming conditions |
title_full_unstemmed |
Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO 2 and warming conditions |
title_sort |
shift towards larger diatoms in a natural phytoplankton assemblage under combined high-co 2 and warming conditions |
publisher |
Oxford Univ Press |
publishDate |
2018 |
url |
https://doi.org/10.1093/plankt/fby018 http://ecite.utas.edu.au/133674 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://ecite.utas.edu.au/133674/1/133674 - Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2.pdf http://dx.doi.org/10.1093/plankt/fby018 Sett, S and Schulz, KG and Bach, LT and Riebesell, U, Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO 2 and warming conditions, Journal of Plankton Research, 40, (4) pp. 391-406. ISSN 0142-7873 (2018) [Refereed Article] http://ecite.utas.edu.au/133674 |
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_ |
1766158898283151360 |