Effects of ocean acidification and eutrophication on the growth and photosynthetic performances of a green tide alga Ulva prolifera
With the impact of fossil fuel burning and industrialization, atmospheric CO 2 concentration will reach about 1000 ppmv in 2100, and more and more CO 2 will be absorbed by ocean, resulting in ocean acidification. The Chinese coastal waters are showing unexpectedly high levels of acidification due to...
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crfrontiers:10.3389/fmars.2023.1145048 2024-09-15T18:27:40+00:00 Effects of ocean acidification and eutrophication on the growth and photosynthetic performances of a green tide alga Ulva prolifera Cai, Jianping Ni, Jiaxuan Chen, Zeyu Wu, Shiqi Wu, Ruijie He, Chuang Wang, Jinguo Liu, Yili Zhou, Wei Xu, Juntian 2023 http://dx.doi.org/10.3389/fmars.2023.1145048 https://www.frontiersin.org/articles/10.3389/fmars.2023.1145048/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Marine Science volume 10 ISSN 2296-7745 journal-article 2023 crfrontiers https://doi.org/10.3389/fmars.2023.1145048 2024-06-25T04:04:58Z With the impact of fossil fuel burning and industrialization, atmospheric CO 2 concentration will reach about 1000 ppmv in 2100, and more and more CO 2 will be absorbed by ocean, resulting in ocean acidification. The Chinese coastal waters are showing unexpectedly high levels of acidification due to a combination of global ocean acidification and severe regional eutrophication, which is caused by natural accumulation or human activities such as aquacultural tail water input, potentially affecting macroalgal blooms. However, little is known about the combined effects of ocean acidification and entrophication on the eco-physiology of bloom-forming macroalgae. This study investigated Ulva prolifera , a dominant species causing green tide in the South Yellow Sea, and explored its growth and physiological responses under the combination conditions of ocean acidification and enriched nutrients. In this study, U. prolifera thalli were cultured under two CO 2 conditions (air and 1000 μatm) and two nutrient conditions (High Nutrient, HN, 135 μmol L -1 N and 8.5 μmol L -1 P; Normal Nutrient, NN, 27 μmol L -1 N and 1.7 μmol L -1 P). The results showed that eutrophication conditions obviously enhanced the relative growth rate and photosynthetic performance of U. prolifera . Elevated p CO 2 had no significant effect on U. prolifera growth and photosynthetic performance under normal nutrient conditions. However, under eutrophication conditions elevated p CO 2 inhibited U. prolifera growth. Moreover, eutrophication conditions markedly improved the contents of chlorophyll a , chlorophyll b and nitrate reductase activity and inhibited the soluble carbohydrate content, but elevated p CO 2 had no significant effect on them under nutrient-replete conditions. In addition, elevated p CO 2 significantly reduced the carotenoid content under eutrophication conditions and had no effect on it under normal nutrient conditions. These findings indicate that seawater eutrophication would greatly accelerate U. prolifera bloom, which may also ... Article in Journal/Newspaper Ocean acidification Frontiers (Publisher) Frontiers in Marine Science 10 |
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With the impact of fossil fuel burning and industrialization, atmospheric CO 2 concentration will reach about 1000 ppmv in 2100, and more and more CO 2 will be absorbed by ocean, resulting in ocean acidification. The Chinese coastal waters are showing unexpectedly high levels of acidification due to a combination of global ocean acidification and severe regional eutrophication, which is caused by natural accumulation or human activities such as aquacultural tail water input, potentially affecting macroalgal blooms. However, little is known about the combined effects of ocean acidification and entrophication on the eco-physiology of bloom-forming macroalgae. This study investigated Ulva prolifera , a dominant species causing green tide in the South Yellow Sea, and explored its growth and physiological responses under the combination conditions of ocean acidification and enriched nutrients. In this study, U. prolifera thalli were cultured under two CO 2 conditions (air and 1000 μatm) and two nutrient conditions (High Nutrient, HN, 135 μmol L -1 N and 8.5 μmol L -1 P; Normal Nutrient, NN, 27 μmol L -1 N and 1.7 μmol L -1 P). The results showed that eutrophication conditions obviously enhanced the relative growth rate and photosynthetic performance of U. prolifera . Elevated p CO 2 had no significant effect on U. prolifera growth and photosynthetic performance under normal nutrient conditions. However, under eutrophication conditions elevated p CO 2 inhibited U. prolifera growth. Moreover, eutrophication conditions markedly improved the contents of chlorophyll a , chlorophyll b and nitrate reductase activity and inhibited the soluble carbohydrate content, but elevated p CO 2 had no significant effect on them under nutrient-replete conditions. In addition, elevated p CO 2 significantly reduced the carotenoid content under eutrophication conditions and had no effect on it under normal nutrient conditions. These findings indicate that seawater eutrophication would greatly accelerate U. prolifera bloom, which may also ... |
format |
Article in Journal/Newspaper |
author |
Cai, Jianping Ni, Jiaxuan Chen, Zeyu Wu, Shiqi Wu, Ruijie He, Chuang Wang, Jinguo Liu, Yili Zhou, Wei Xu, Juntian |
spellingShingle |
Cai, Jianping Ni, Jiaxuan Chen, Zeyu Wu, Shiqi Wu, Ruijie He, Chuang Wang, Jinguo Liu, Yili Zhou, Wei Xu, Juntian Effects of ocean acidification and eutrophication on the growth and photosynthetic performances of a green tide alga Ulva prolifera |
author_facet |
Cai, Jianping Ni, Jiaxuan Chen, Zeyu Wu, Shiqi Wu, Ruijie He, Chuang Wang, Jinguo Liu, Yili Zhou, Wei Xu, Juntian |
author_sort |
Cai, Jianping |
title |
Effects of ocean acidification and eutrophication on the growth and photosynthetic performances of a green tide alga Ulva prolifera |
title_short |
Effects of ocean acidification and eutrophication on the growth and photosynthetic performances of a green tide alga Ulva prolifera |
title_full |
Effects of ocean acidification and eutrophication on the growth and photosynthetic performances of a green tide alga Ulva prolifera |
title_fullStr |
Effects of ocean acidification and eutrophication on the growth and photosynthetic performances of a green tide alga Ulva prolifera |
title_full_unstemmed |
Effects of ocean acidification and eutrophication on the growth and photosynthetic performances of a green tide alga Ulva prolifera |
title_sort |
effects of ocean acidification and eutrophication on the growth and photosynthetic performances of a green tide alga ulva prolifera |
publisher |
Frontiers Media SA |
publishDate |
2023 |
url |
http://dx.doi.org/10.3389/fmars.2023.1145048 https://www.frontiersin.org/articles/10.3389/fmars.2023.1145048/full |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Frontiers in Marine Science volume 10 ISSN 2296-7745 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmars.2023.1145048 |
container_title |
Frontiers in Marine Science |
container_volume |
10 |
_version_ |
1810468919322869760 |