Analyzing the impacts of elevated-CO2 levels on the development of a subtropical zooplankton community during oligotrophic conditions and simulated upwelling
Ocean acidification (OA) is affecting marine ecosystems through changes in carbonate chemistry that may influence consumers of phytoplankton, often via trophic pathways. Using a mesocosm approach, we investigated OA effects on a subtropical zooplankton community during oligotrophic, bloom, and post-...
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Language: | English |
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Frontiers Research Foundation
2019
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Online Access: | https://eprints.utas.edu.au/39690/ https://eprints.utas.edu.au/39690/1/133682%20-%20Analyzing%20the%20impacts%20of%20elevated-CO2%20levels%20on%20the%20development%20of%20a%20subtropical%20zooplankton.pdf |
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ftunivtasmania:oai:eprints.utas.edu.au:39690 2023-05-15T17:50:48+02:00 Analyzing the impacts of elevated-CO2 levels on the development of a subtropical zooplankton community during oligotrophic conditions and simulated upwelling Alguero-Muniz, M Horn, HG Alvarez-Fernandez, S Spisla, C Aberle, N Bach, LT Guan, W Achterberg, EP Riebesell, U Boersma, M 2019 application/pdf https://eprints.utas.edu.au/39690/ https://eprints.utas.edu.au/39690/1/133682%20-%20Analyzing%20the%20impacts%20of%20elevated-CO2%20levels%20on%20the%20development%20of%20a%20subtropical%20zooplankton.pdf en eng Frontiers Research Foundation https://eprints.utas.edu.au/39690/1/133682%20-%20Analyzing%20the%20impacts%20of%20elevated-CO2%20levels%20on%20the%20development%20of%20a%20subtropical%20zooplankton.pdf Alguero-Muniz, M, Horn, HG, Alvarez-Fernandez, S, Spisla, C, Aberle, N, Bach, LT orcid:0000-0003-0202-3671 , Guan, W, Achterberg, EP, Riebesell, U and Boersma, M 2019 , 'Analyzing the impacts of elevated-CO2 levels on the development of a subtropical zooplankton community during oligotrophic conditions and simulated upwelling' , Frontiers in Marine Science, vol. 6 , pp. 1-18 , doi:10.3389/fmars.2019.00061 <http://dx.doi.org/10.3389/fmars.2019.00061>. zooplankton ocean acidification microzooplankton mesozooplankton mesocosms nutrients Oncaea trophic transfer efficiency Article PeerReviewed 2019 ftunivtasmania https://doi.org/10.3389/fmars.2019.00061 2022-01-17T23:17:59Z Ocean acidification (OA) is affecting marine ecosystems through changes in carbonate chemistry that may influence consumers of phytoplankton, often via trophic pathways. Using a mesocosm approach, we investigated OA effects on a subtropical zooplankton community during oligotrophic, bloom, and post-bloom phases under a range of different pCO2 levels (from ∼400 to ∼1480 μatm). Furthermore, we simulated an upwelling event by adding 650 m-depth nutrient-rich water to the mesocosms, which initiated a phytoplankton bloom. No effects of pCO2 on the zooplankton community were visible in the oligotrophic conditions before the bloom. The zooplankton community responded to phytoplankton bloom by increased abundances in all treatments, although the response was delayed under high-pCO2 conditions. Microzooplankton was dominated by small dinoflagellates and aloricate ciliates, which were more abundant under medium- to high-pCO2 conditions. The most abundant mesozooplankters were calanoid copepods, which did not respond to CO2 treatments during the oligotrophic phase of the experiment but were found in higher abundance under medium- and high-pCO2 conditions toward the end of the experiment, most likely as a response to increased phyto- and microzooplankton standing stocks. The second most abundant mesozooplankton taxon were appendicularians, which did not show a response to the different pCO2 treatments. Overall, CO2 effects on zooplankton seemed to be primarily transmitted through significant CO2 effects on phytoplankton and therefore indirect pathways. We conclude that elevated pCO2 can change trophic cascades with significant effects on zooplankton, what might ultimately affect higher trophic levels in the future. Article in Journal/Newspaper Ocean acidification Copepods University of Tasmania: UTas ePrints Frontiers in Marine Science 6 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
zooplankton ocean acidification microzooplankton mesozooplankton mesocosms nutrients Oncaea trophic transfer efficiency |
spellingShingle |
zooplankton ocean acidification microzooplankton mesozooplankton mesocosms nutrients Oncaea trophic transfer efficiency Alguero-Muniz, M Horn, HG Alvarez-Fernandez, S Spisla, C Aberle, N Bach, LT Guan, W Achterberg, EP Riebesell, U Boersma, M Analyzing the impacts of elevated-CO2 levels on the development of a subtropical zooplankton community during oligotrophic conditions and simulated upwelling |
topic_facet |
zooplankton ocean acidification microzooplankton mesozooplankton mesocosms nutrients Oncaea trophic transfer efficiency |
description |
Ocean acidification (OA) is affecting marine ecosystems through changes in carbonate chemistry that may influence consumers of phytoplankton, often via trophic pathways. Using a mesocosm approach, we investigated OA effects on a subtropical zooplankton community during oligotrophic, bloom, and post-bloom phases under a range of different pCO2 levels (from ∼400 to ∼1480 μatm). Furthermore, we simulated an upwelling event by adding 650 m-depth nutrient-rich water to the mesocosms, which initiated a phytoplankton bloom. No effects of pCO2 on the zooplankton community were visible in the oligotrophic conditions before the bloom. The zooplankton community responded to phytoplankton bloom by increased abundances in all treatments, although the response was delayed under high-pCO2 conditions. Microzooplankton was dominated by small dinoflagellates and aloricate ciliates, which were more abundant under medium- to high-pCO2 conditions. The most abundant mesozooplankters were calanoid copepods, which did not respond to CO2 treatments during the oligotrophic phase of the experiment but were found in higher abundance under medium- and high-pCO2 conditions toward the end of the experiment, most likely as a response to increased phyto- and microzooplankton standing stocks. The second most abundant mesozooplankton taxon were appendicularians, which did not show a response to the different pCO2 treatments. Overall, CO2 effects on zooplankton seemed to be primarily transmitted through significant CO2 effects on phytoplankton and therefore indirect pathways. We conclude that elevated pCO2 can change trophic cascades with significant effects on zooplankton, what might ultimately affect higher trophic levels in the future. |
format |
Article in Journal/Newspaper |
author |
Alguero-Muniz, M Horn, HG Alvarez-Fernandez, S Spisla, C Aberle, N Bach, LT Guan, W Achterberg, EP Riebesell, U Boersma, M |
author_facet |
Alguero-Muniz, M Horn, HG Alvarez-Fernandez, S Spisla, C Aberle, N Bach, LT Guan, W Achterberg, EP Riebesell, U Boersma, M |
author_sort |
Alguero-Muniz, M |
title |
Analyzing the impacts of elevated-CO2 levels on the development of a subtropical zooplankton community during oligotrophic conditions and simulated upwelling |
title_short |
Analyzing the impacts of elevated-CO2 levels on the development of a subtropical zooplankton community during oligotrophic conditions and simulated upwelling |
title_full |
Analyzing the impacts of elevated-CO2 levels on the development of a subtropical zooplankton community during oligotrophic conditions and simulated upwelling |
title_fullStr |
Analyzing the impacts of elevated-CO2 levels on the development of a subtropical zooplankton community during oligotrophic conditions and simulated upwelling |
title_full_unstemmed |
Analyzing the impacts of elevated-CO2 levels on the development of a subtropical zooplankton community during oligotrophic conditions and simulated upwelling |
title_sort |
analyzing the impacts of elevated-co2 levels on the development of a subtropical zooplankton community during oligotrophic conditions and simulated upwelling |
publisher |
Frontiers Research Foundation |
publishDate |
2019 |
url |
https://eprints.utas.edu.au/39690/ https://eprints.utas.edu.au/39690/1/133682%20-%20Analyzing%20the%20impacts%20of%20elevated-CO2%20levels%20on%20the%20development%20of%20a%20subtropical%20zooplankton.pdf |
genre |
Ocean acidification Copepods |
genre_facet |
Ocean acidification Copepods |
op_relation |
https://eprints.utas.edu.au/39690/1/133682%20-%20Analyzing%20the%20impacts%20of%20elevated-CO2%20levels%20on%20the%20development%20of%20a%20subtropical%20zooplankton.pdf Alguero-Muniz, M, Horn, HG, Alvarez-Fernandez, S, Spisla, C, Aberle, N, Bach, LT orcid:0000-0003-0202-3671 , Guan, W, Achterberg, EP, Riebesell, U and Boersma, M 2019 , 'Analyzing the impacts of elevated-CO2 levels on the development of a subtropical zooplankton community during oligotrophic conditions and simulated upwelling' , Frontiers in Marine Science, vol. 6 , pp. 1-18 , doi:10.3389/fmars.2019.00061 <http://dx.doi.org/10.3389/fmars.2019.00061>. |
op_doi |
https://doi.org/10.3389/fmars.2019.00061 |
container_title |
Frontiers in Marine Science |
container_volume |
6 |
_version_ |
1766157700768464896 |