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-...
Published in: | Frontiers in Marine Science |
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Online Access: | http://hdl.handle.net/11250/2642808 https://doi.org/10.3389/fmars.2019.00061 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2642808 2023-05-15T17:52:07+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, Maria Horn, Henriette G. Alvarez-Fernandez, Santiago Spisla, Carsten Aberle-Malzahn, Nicole Bach, Lennart T. Guan, Wanchun Achterberg, Erik P. Riebesell, Ulf Boersma, Maarten 2019 http://hdl.handle.net/11250/2642808 https://doi.org/10.3389/fmars.2019.00061 eng eng Frontiers Media Frontiers in Marine Science. 2019, 6 (UNSP 61), . urn:issn:2296-7745 http://hdl.handle.net/11250/2642808 https://doi.org/10.3389/fmars.2019.00061 cristin:1770519 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 18 6 Frontiers in Marine Science UNSP 61 Journal article Peer reviewed 2019 ftntnutrondheimi https://doi.org/10.3389/fmars.2019.00061 2020-02-26T23:32:26Z 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. publishedVersion Copyright © 2019 Algueró-Muñiz, Horn, Alvarez-Fernandez, Spisla, Aberle, Bach, Guan, Achterberg, Riebesell and Boersma. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. Article in Journal/Newspaper Ocean acidification Copepods NTNU Open Archive (Norwegian University of Science and Technology) Alvarez ENVELOPE(-64.483,-64.483,-65.633,-65.633) Fernandez ENVELOPE(-62.233,-62.233,-63.250,-63.250) Frontiers in Marine Science 6 |
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Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
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. publishedVersion Copyright © 2019 Algueró-Muñiz, Horn, Alvarez-Fernandez, Spisla, Aberle, Bach, Guan, Achterberg, Riebesell and Boersma. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
format |
Article in Journal/Newspaper |
author |
Alguero-Muniz, Maria Horn, Henriette G. Alvarez-Fernandez, Santiago Spisla, Carsten Aberle-Malzahn, Nicole Bach, Lennart T. Guan, Wanchun Achterberg, Erik P. Riebesell, Ulf Boersma, Maarten |
spellingShingle |
Alguero-Muniz, Maria Horn, Henriette G. Alvarez-Fernandez, Santiago Spisla, Carsten Aberle-Malzahn, Nicole Bach, Lennart T. Guan, Wanchun Achterberg, Erik P. Riebesell, Ulf Boersma, Maarten Analyzing the Impacts of Elevated-CO2 Levels on the Development of a Subtropical Zooplankton Community During Oligotrophic Conditions and Simulated Upwelling |
author_facet |
Alguero-Muniz, Maria Horn, Henriette G. Alvarez-Fernandez, Santiago Spisla, Carsten Aberle-Malzahn, Nicole Bach, Lennart T. Guan, Wanchun Achterberg, Erik P. Riebesell, Ulf Boersma, Maarten |
author_sort |
Alguero-Muniz, Maria |
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 Media |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2642808 https://doi.org/10.3389/fmars.2019.00061 |
long_lat |
ENVELOPE(-64.483,-64.483,-65.633,-65.633) ENVELOPE(-62.233,-62.233,-63.250,-63.250) |
geographic |
Alvarez Fernandez |
geographic_facet |
Alvarez Fernandez |
genre |
Ocean acidification Copepods |
genre_facet |
Ocean acidification Copepods |
op_source |
18 6 Frontiers in Marine Science UNSP 61 |
op_relation |
Frontiers in Marine Science. 2019, 6 (UNSP 61), . urn:issn:2296-7745 http://hdl.handle.net/11250/2642808 https://doi.org/10.3389/fmars.2019.00061 cristin:1770519 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2019.00061 |
container_title |
Frontiers in Marine Science |
container_volume |
6 |
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1766159452056059904 |