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...
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Language: | English |
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Oxford Univ Press
2018
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Online Access: | https://eprints.utas.edu.au/43548/ https://eprints.utas.edu.au/43548/1/133674%20-%20Shift%20towards%20larger%20diatoms%20in%20a%20natural%20phytoplankton%20assemblage%20under%20combined%20high-CO2.pdf |
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ftunivtasmania:oai:eprints.utas.edu.au:43548 2023-05-15T17:50:38+02:00 Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions Sett, S Schulz, KG Bach, LT Riebesell, U 2018 application/pdf https://eprints.utas.edu.au/43548/ https://eprints.utas.edu.au/43548/1/133674%20-%20Shift%20towards%20larger%20diatoms%20in%20a%20natural%20phytoplankton%20assemblage%20under%20combined%20high-CO2.pdf en eng Oxford Univ Press https://eprints.utas.edu.au/43548/1/133674%20-%20Shift%20towards%20larger%20diatoms%20in%20a%20natural%20phytoplankton%20assemblage%20under%20combined%20high-CO2.pdf Sett, S, Schulz, KG, Bach, LT orcid:0000-0003-0202-3671 and Riebesell, U 2018 , 'Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions' , Journal of Plankton Research, vol. 40, no. 4 , pp. 391-406 , doi:10.1093/plankt/fby018 <http://dx.doi.org/10.1093/plankt/fby018>. ocean acidification ocean warming phytoplankton Article PeerReviewed 2018 ftunivtasmania https://doi.org/10.1093/plankt/fby018 2022-02-21T23:17:59Z 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 pCO2), a “High-CO2” treatment (ambient temperature and initially 1020 ± 45 μatm pCO2) and a “Greenhouse” treatment (~8.5 °C and initially 990 ± 60 μatm pCO2). Nutrient replete conditions prevailed at the beginning of the experiment and light was provided at in situ levels upon reaching pCO2 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 University of Tasmania: UTas ePrints Journal of Plankton Research 40 4 391 406 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
ocean acidification ocean warming phytoplankton |
spellingShingle |
ocean acidification ocean warming phytoplankton Sett, S Schulz, KG Bach, LT Riebesell, U Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions |
topic_facet |
ocean acidification ocean warming phytoplankton |
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 pCO2), a “High-CO2” treatment (ambient temperature and initially 1020 ± 45 μatm pCO2) and a “Greenhouse” treatment (~8.5 °C and initially 990 ± 60 μatm pCO2). Nutrient replete conditions prevailed at the beginning of the experiment and light was provided at in situ levels upon reaching pCO2 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, 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-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://eprints.utas.edu.au/43548/ https://eprints.utas.edu.au/43548/1/133674%20-%20Shift%20towards%20larger%20diatoms%20in%20a%20natural%20phytoplankton%20assemblage%20under%20combined%20high-CO2.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://eprints.utas.edu.au/43548/1/133674%20-%20Shift%20towards%20larger%20diatoms%20in%20a%20natural%20phytoplankton%20assemblage%20under%20combined%20high-CO2.pdf Sett, S, Schulz, KG, Bach, LT orcid:0000-0003-0202-3671 and Riebesell, U 2018 , 'Shift towards larger diatoms in a natural phytoplankton assemblage under combined high-CO2 and warming conditions' , Journal of Plankton Research, vol. 40, no. 4 , pp. 391-406 , doi:10.1093/plankt/fby018 <http://dx.doi.org/10.1093/plankt/fby018>. |
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_ |
1766157477292802048 |