Alterations in microbial community composition with increasing f CO 2 : a mesocosm study in the eastern Baltic Sea
Ocean acidification resulting from the uptake of anthropogenic carbon dioxide (CO 2 ) by the ocean is considered a major threat to marine ecosystems. Here we examined the effects of ocean acidification on microbial community dynamics in the eastern Baltic Sea during the summer of 2012 when inorganic...
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ftdoajarticles:oai:doaj.org/article:aaa0d09c3377420d8a16d90339482c29 2023-05-15T17:50:35+02:00 Alterations in microbial community composition with increasing f CO 2 : a mesocosm study in the eastern Baltic Sea K. J. Crawfurd S. Alvarez-Fernandez K. D. A. Mojica U. Riebesell C. P. D. Brussaard 2017-08-01T00:00:00Z https://doi.org/10.5194/bg-14-3831-2017 https://doaj.org/article/aaa0d09c3377420d8a16d90339482c29 EN eng Copernicus Publications https://www.biogeosciences.net/14/3831/2017/bg-14-3831-2017.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-14-3831-2017 1726-4170 1726-4189 https://doaj.org/article/aaa0d09c3377420d8a16d90339482c29 Biogeosciences, Vol 14, Pp 3831-3849 (2017) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.5194/bg-14-3831-2017 2022-12-31T15:22:30Z Ocean acidification resulting from the uptake of anthropogenic carbon dioxide (CO 2 ) by the ocean is considered a major threat to marine ecosystems. Here we examined the effects of ocean acidification on microbial community dynamics in the eastern Baltic Sea during the summer of 2012 when inorganic nitrogen and phosphorus were strongly depleted. Large-volume in situ mesocosms were employed to mimic present, future and far future CO 2 scenarios. All six groups of phytoplankton enumerated by flow cytometry ( < 20 µm cell diameter) showed distinct trends in net growth and abundance with CO 2 enrichment. The picoeukaryotic phytoplankton groups Pico-I and Pico-II displayed enhanced abundances, whilst Pico-III, Synechococcus and the nanoeukaryotic phytoplankton groups were negatively affected by elevated fugacity of CO 2 ( f CO 2 ). Specifically, the numerically dominant eukaryote, Pico-I, demonstrated increases in gross growth rate with increasing f CO 2 sufficient to double its abundance. The dynamics of the prokaryote community closely followed trends in total algal biomass despite differential effects of f CO 2 on algal groups. Similarly, viral abundances corresponded to prokaryotic host population dynamics. Viral lysis and grazing were both important in controlling microbial abundances. Overall our results point to a shift, with increasing f CO 2 , towards a more regenerative system with production dominated by small picoeukaryotic phytoplankton. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Biogeosciences 14 16 3831 3849 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
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Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 K. J. Crawfurd S. Alvarez-Fernandez K. D. A. Mojica U. Riebesell C. P. D. Brussaard Alterations in microbial community composition with increasing f CO 2 : a mesocosm study in the eastern Baltic Sea |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Ocean acidification resulting from the uptake of anthropogenic carbon dioxide (CO 2 ) by the ocean is considered a major threat to marine ecosystems. Here we examined the effects of ocean acidification on microbial community dynamics in the eastern Baltic Sea during the summer of 2012 when inorganic nitrogen and phosphorus were strongly depleted. Large-volume in situ mesocosms were employed to mimic present, future and far future CO 2 scenarios. All six groups of phytoplankton enumerated by flow cytometry ( < 20 µm cell diameter) showed distinct trends in net growth and abundance with CO 2 enrichment. The picoeukaryotic phytoplankton groups Pico-I and Pico-II displayed enhanced abundances, whilst Pico-III, Synechococcus and the nanoeukaryotic phytoplankton groups were negatively affected by elevated fugacity of CO 2 ( f CO 2 ). Specifically, the numerically dominant eukaryote, Pico-I, demonstrated increases in gross growth rate with increasing f CO 2 sufficient to double its abundance. The dynamics of the prokaryote community closely followed trends in total algal biomass despite differential effects of f CO 2 on algal groups. Similarly, viral abundances corresponded to prokaryotic host population dynamics. Viral lysis and grazing were both important in controlling microbial abundances. Overall our results point to a shift, with increasing f CO 2 , towards a more regenerative system with production dominated by small picoeukaryotic phytoplankton. |
format |
Article in Journal/Newspaper |
author |
K. J. Crawfurd S. Alvarez-Fernandez K. D. A. Mojica U. Riebesell C. P. D. Brussaard |
author_facet |
K. J. Crawfurd S. Alvarez-Fernandez K. D. A. Mojica U. Riebesell C. P. D. Brussaard |
author_sort |
K. J. Crawfurd |
title |
Alterations in microbial community composition with increasing f CO 2 : a mesocosm study in the eastern Baltic Sea |
title_short |
Alterations in microbial community composition with increasing f CO 2 : a mesocosm study in the eastern Baltic Sea |
title_full |
Alterations in microbial community composition with increasing f CO 2 : a mesocosm study in the eastern Baltic Sea |
title_fullStr |
Alterations in microbial community composition with increasing f CO 2 : a mesocosm study in the eastern Baltic Sea |
title_full_unstemmed |
Alterations in microbial community composition with increasing f CO 2 : a mesocosm study in the eastern Baltic Sea |
title_sort |
alterations in microbial community composition with increasing f co 2 : a mesocosm study in the eastern baltic sea |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/bg-14-3831-2017 https://doaj.org/article/aaa0d09c3377420d8a16d90339482c29 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Biogeosciences, Vol 14, Pp 3831-3849 (2017) |
op_relation |
https://www.biogeosciences.net/14/3831/2017/bg-14-3831-2017.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-14-3831-2017 1726-4170 1726-4189 https://doaj.org/article/aaa0d09c3377420d8a16d90339482c29 |
op_doi |
https://doi.org/10.5194/bg-14-3831-2017 |
container_title |
Biogeosciences |
container_volume |
14 |
container_issue |
16 |
container_start_page |
3831 |
op_container_end_page |
3849 |
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1766157396176011264 |