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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Online Access: | https://doi.org/10.3389/fmars.2019.00061 https://doaj.org/article/1289dbb0c9a4440ca2c80ac34f0c4856 |
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ftdoajarticles:oai:doaj.org/article:1289dbb0c9a4440ca2c80ac34f0c4856 2023-05-15T17:50:51+02:00 Analyzing the Impacts of Elevated-CO2 Levels on the Development of a Subtropical Zooplankton Community During Oligotrophic Conditions and Simulated Upwelling María Algueró-Muñiz Henriette G. Horn Santiago Alvarez-Fernandez Carsten Spisla Nicole Aberle Lennart T. Bach Wanchun Guan Eric P. Achterberg Ulf Riebesell Maarten Boersma 2019-02-01T00:00:00Z https://doi.org/10.3389/fmars.2019.00061 https://doaj.org/article/1289dbb0c9a4440ca2c80ac34f0c4856 EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fmars.2019.00061/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2019.00061 https://doaj.org/article/1289dbb0c9a4440ca2c80ac34f0c4856 Frontiers in Marine Science, Vol 6 (2019) microzooplankton mesozooplankton mesocosms ocean acidification nutrients Oncaea Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2019 ftdoajarticles https://doi.org/10.3389/fmars.2019.00061 2022-12-31T08:16:43Z 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 Directory of Open Access Journals: DOAJ Articles Frontiers in Marine Science 6 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
microzooplankton mesozooplankton mesocosms ocean acidification nutrients Oncaea Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
microzooplankton mesozooplankton mesocosms ocean acidification nutrients Oncaea Science Q General. Including nature conservation geographical distribution QH1-199.5 María Algueró-Muñiz Henriette G. Horn Santiago Alvarez-Fernandez Carsten Spisla Nicole Aberle Lennart T. Bach Wanchun Guan Eric P. Achterberg Ulf Riebesell Maarten Boersma Analyzing the Impacts of Elevated-CO2 Levels on the Development of a Subtropical Zooplankton Community During Oligotrophic Conditions and Simulated Upwelling |
topic_facet |
microzooplankton mesozooplankton mesocosms ocean acidification nutrients Oncaea Science Q General. Including nature conservation geographical distribution QH1-199.5 |
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 |
María Algueró-Muñiz Henriette G. Horn Santiago Alvarez-Fernandez Carsten Spisla Nicole Aberle Lennart T. Bach Wanchun Guan Eric P. Achterberg Ulf Riebesell Maarten Boersma |
author_facet |
María Algueró-Muñiz Henriette G. Horn Santiago Alvarez-Fernandez Carsten Spisla Nicole Aberle Lennart T. Bach Wanchun Guan Eric P. Achterberg Ulf Riebesell Maarten Boersma |
author_sort |
María Algueró-Muñiz |
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 S.A. |
publishDate |
2019 |
url |
https://doi.org/10.3389/fmars.2019.00061 https://doaj.org/article/1289dbb0c9a4440ca2c80ac34f0c4856 |
genre |
Ocean acidification Copepods |
genre_facet |
Ocean acidification Copepods |
op_source |
Frontiers in Marine Science, Vol 6 (2019) |
op_relation |
https://www.frontiersin.org/article/10.3389/fmars.2019.00061/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2019.00061 https://doaj.org/article/1289dbb0c9a4440ca2c80ac34f0c4856 |
op_doi |
https://doi.org/10.3389/fmars.2019.00061 |
container_title |
Frontiers in Marine Science |
container_volume |
6 |
_version_ |
1766157769852846080 |