Image_2_Effect of Ocean Acidification on Bacterial Metabolic Activity and Community Composition in Oligotrophic Oceans, Inferred From Short-Term Bioassays.TIF
Increasing anthropogenic CO 2 emissions in recent decades cause ocean acidification (OA), affecting carbon cycling in oceans by regulating eco-physiological processes of plankton. Heterotrophic bacteria play an important role in carbon cycling in oceans. However, the effect of OA on bacteria in ocea...
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ftfrontimediafig:oai:figshare.com:article/14122118 2023-05-15T17:50:03+02:00 Image_2_Effect of Ocean Acidification on Bacterial Metabolic Activity and Community Composition in Oligotrophic Oceans, Inferred From Short-Term Bioassays.TIF Caiqin Hu Xiangfu Li Maoqiu He Peng Jiang Aimin Long Jie Xu 2021-02-26T04:54:42Z https://doi.org/10.3389/fmicb.2021.583982.s002 https://figshare.com/articles/figure/Image_2_Effect_of_Ocean_Acidification_on_Bacterial_Metabolic_Activity_and_Community_Composition_in_Oligotrophic_Oceans_Inferred_From_Short-Term_Bioassays_TIF/14122118 unknown doi:10.3389/fmicb.2021.583982.s002 https://figshare.com/articles/figure/Image_2_Effect_of_Ocean_Acidification_on_Bacterial_Metabolic_Activity_and_Community_Composition_in_Oligotrophic_Oceans_Inferred_From_Short-Term_Bioassays_TIF/14122118 CC BY 4.0 CC-BY Microbiology Microbial Genetics Microbial Ecology Mycology bacterial metabolic activity bacterial community composition microbial carbon cycling ocean acidification the northern South China Sea Image Figure 2021 ftfrontimediafig https://doi.org/10.3389/fmicb.2021.583982.s002 2021-03-03T23:59:44Z Increasing anthropogenic CO 2 emissions in recent decades cause ocean acidification (OA), affecting carbon cycling in oceans by regulating eco-physiological processes of plankton. Heterotrophic bacteria play an important role in carbon cycling in oceans. However, the effect of OA on bacteria in oceans, especially in oligotrophic regions, was not well understood. In our study, the response of bacterial metabolic activity and community composition to OA was assessed by determining bacterial production, respiration, and community composition at the low-pCO 2 (400 ppm) and high-pCO 2 (800 ppm) treatments over the short term at two oligotrophic stations in the northern South China Sea. Bacterial production decreased significantly by 17.1–37.1 % in response to OA, since bacteria with high nucleic acid content preferentially were repressed by OA, which was less abundant under high-pCO 2 treatment. Correspondingly, shifts in bacterial community composition occurred in response to OA, with a high fraction of the small-sized bacteria and high bacterial species diversity in a high-pCO 2 scenario at K11. Bacterial respiration responded to OA differently at both stations, most likely attributed to different physiological responses of the bacterial community to OA. OA mitigated bacterial growth efficiency, and consequently, a larger fraction of DOC entering microbial loops was transferred to CO 2 . Still Image Ocean acidification Frontiers: Figshare |
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Frontiers: Figshare |
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ftfrontimediafig |
language |
unknown |
topic |
Microbiology Microbial Genetics Microbial Ecology Mycology bacterial metabolic activity bacterial community composition microbial carbon cycling ocean acidification the northern South China Sea |
spellingShingle |
Microbiology Microbial Genetics Microbial Ecology Mycology bacterial metabolic activity bacterial community composition microbial carbon cycling ocean acidification the northern South China Sea Caiqin Hu Xiangfu Li Maoqiu He Peng Jiang Aimin Long Jie Xu Image_2_Effect of Ocean Acidification on Bacterial Metabolic Activity and Community Composition in Oligotrophic Oceans, Inferred From Short-Term Bioassays.TIF |
topic_facet |
Microbiology Microbial Genetics Microbial Ecology Mycology bacterial metabolic activity bacterial community composition microbial carbon cycling ocean acidification the northern South China Sea |
description |
Increasing anthropogenic CO 2 emissions in recent decades cause ocean acidification (OA), affecting carbon cycling in oceans by regulating eco-physiological processes of plankton. Heterotrophic bacteria play an important role in carbon cycling in oceans. However, the effect of OA on bacteria in oceans, especially in oligotrophic regions, was not well understood. In our study, the response of bacterial metabolic activity and community composition to OA was assessed by determining bacterial production, respiration, and community composition at the low-pCO 2 (400 ppm) and high-pCO 2 (800 ppm) treatments over the short term at two oligotrophic stations in the northern South China Sea. Bacterial production decreased significantly by 17.1–37.1 % in response to OA, since bacteria with high nucleic acid content preferentially were repressed by OA, which was less abundant under high-pCO 2 treatment. Correspondingly, shifts in bacterial community composition occurred in response to OA, with a high fraction of the small-sized bacteria and high bacterial species diversity in a high-pCO 2 scenario at K11. Bacterial respiration responded to OA differently at both stations, most likely attributed to different physiological responses of the bacterial community to OA. OA mitigated bacterial growth efficiency, and consequently, a larger fraction of DOC entering microbial loops was transferred to CO 2 . |
format |
Still Image |
author |
Caiqin Hu Xiangfu Li Maoqiu He Peng Jiang Aimin Long Jie Xu |
author_facet |
Caiqin Hu Xiangfu Li Maoqiu He Peng Jiang Aimin Long Jie Xu |
author_sort |
Caiqin Hu |
title |
Image_2_Effect of Ocean Acidification on Bacterial Metabolic Activity and Community Composition in Oligotrophic Oceans, Inferred From Short-Term Bioassays.TIF |
title_short |
Image_2_Effect of Ocean Acidification on Bacterial Metabolic Activity and Community Composition in Oligotrophic Oceans, Inferred From Short-Term Bioassays.TIF |
title_full |
Image_2_Effect of Ocean Acidification on Bacterial Metabolic Activity and Community Composition in Oligotrophic Oceans, Inferred From Short-Term Bioassays.TIF |
title_fullStr |
Image_2_Effect of Ocean Acidification on Bacterial Metabolic Activity and Community Composition in Oligotrophic Oceans, Inferred From Short-Term Bioassays.TIF |
title_full_unstemmed |
Image_2_Effect of Ocean Acidification on Bacterial Metabolic Activity and Community Composition in Oligotrophic Oceans, Inferred From Short-Term Bioassays.TIF |
title_sort |
image_2_effect of ocean acidification on bacterial metabolic activity and community composition in oligotrophic oceans, inferred from short-term bioassays.tif |
publishDate |
2021 |
url |
https://doi.org/10.3389/fmicb.2021.583982.s002 https://figshare.com/articles/figure/Image_2_Effect_of_Ocean_Acidification_on_Bacterial_Metabolic_Activity_and_Community_Composition_in_Oligotrophic_Oceans_Inferred_From_Short-Term_Bioassays_TIF/14122118 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
doi:10.3389/fmicb.2021.583982.s002 https://figshare.com/articles/figure/Image_2_Effect_of_Ocean_Acidification_on_Bacterial_Metabolic_Activity_and_Community_Composition_in_Oligotrophic_Oceans_Inferred_From_Short-Term_Bioassays_TIF/14122118 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmicb.2021.583982.s002 |
_version_ |
1766156632509644800 |