The Differential Responses of Coastal Diatoms to Ocean Acidification and Warming: A Comparison Between Thalassiosira sp. and Nitzschia closterium f.minutissima
Marine diatoms are one of the marine phytoplankton functional groups, with high species diversity, playing important roles in the marine food web and carbon sequestration. In order to evaluate the species-specific responses of coastal diatoms to the combined effects of future ocean acidification (OA...
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Online Access: | http://dx.doi.org/10.3389/fmicb.2022.851149 https://www.frontiersin.org/articles/10.3389/fmicb.2022.851149/full |
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crfrontiers:10.3389/fmicb.2022.851149 2024-06-23T07:55:51+00:00 The Differential Responses of Coastal Diatoms to Ocean Acidification and Warming: A Comparison Between Thalassiosira sp. and Nitzschia closterium f.minutissima Cai, Ting Feng, Yuanyuan Wang, Yanan Li, Tongtong Wang, Jiancai Li, Wei Zhou, Weihua Natural Science Foundation of Tianjin City National Natural Science Foundation of China 2022 http://dx.doi.org/10.3389/fmicb.2022.851149 https://www.frontiersin.org/articles/10.3389/fmicb.2022.851149/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Microbiology volume 13 ISSN 1664-302X journal-article 2022 crfrontiers https://doi.org/10.3389/fmicb.2022.851149 2024-06-04T05:53:56Z Marine diatoms are one of the marine phytoplankton functional groups, with high species diversity, playing important roles in the marine food web and carbon sequestration. In order to evaluate the species-specific responses of coastal diatoms to the combined effects of future ocean acidification (OA) and warming on the coastal diatoms, we conducted a semi-continuous incubation on the large centric diatom Thalassiosira sp. (~30 μm) and small pennate diatom Nitzschia closterium f.minutissima (~15 μm). A full factorial combination of two temperature levels (15 and 20°C) and pCO 2 (400 and 1,000 ppm) was examined. The results suggest that changes in temperature played a more important role in regulating the physiology of Thalassiosira sp. and N. closterium f.minutissima than CO 2 . For Thalassiosira sp., elevated temperature significantly reduced the cellular particulate organic carbon (POC), particulate organic nitrogen (PON), particulate organic phosphate (POP), biogenic silica (BSi), chlorophyll a (Chl a ), and protein contents, and the C:N ratio. CO 2 only had significant effects on the growth rate and the protein content. However, for the smaller pennate diatom N. closterium f.minutissima , the growth rate, POC production rate, and the C:P ratio significantly increased with an elevated temperature, whereas the cellular POP and BSi contents significantly decreased. CO 2 had significant effects on the POC production rate, cellular BSi, POC, and PON contents, the C:P, Si:C, N:P, and Si:P ratios, and sinking rate. The interaction between OA and warming showed mostly antagonistic effects on the physiology of both species. Overall, by comparison between the two species, CO 2 played a more significant role in regulating the growth rate and sinking rate of the large centric diatom Thalassiosira sp., whereas had more significant effects on the elemental compositions of the smaller pennate diatom N. closterium f.minutissima . These results suggest differential sensitivities of different diatom species with different ... Article in Journal/Newspaper Ocean acidification Frontiers (Publisher) Frontiers in Microbiology 13 |
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Marine diatoms are one of the marine phytoplankton functional groups, with high species diversity, playing important roles in the marine food web and carbon sequestration. In order to evaluate the species-specific responses of coastal diatoms to the combined effects of future ocean acidification (OA) and warming on the coastal diatoms, we conducted a semi-continuous incubation on the large centric diatom Thalassiosira sp. (~30 μm) and small pennate diatom Nitzschia closterium f.minutissima (~15 μm). A full factorial combination of two temperature levels (15 and 20°C) and pCO 2 (400 and 1,000 ppm) was examined. The results suggest that changes in temperature played a more important role in regulating the physiology of Thalassiosira sp. and N. closterium f.minutissima than CO 2 . For Thalassiosira sp., elevated temperature significantly reduced the cellular particulate organic carbon (POC), particulate organic nitrogen (PON), particulate organic phosphate (POP), biogenic silica (BSi), chlorophyll a (Chl a ), and protein contents, and the C:N ratio. CO 2 only had significant effects on the growth rate and the protein content. However, for the smaller pennate diatom N. closterium f.minutissima , the growth rate, POC production rate, and the C:P ratio significantly increased with an elevated temperature, whereas the cellular POP and BSi contents significantly decreased. CO 2 had significant effects on the POC production rate, cellular BSi, POC, and PON contents, the C:P, Si:C, N:P, and Si:P ratios, and sinking rate. The interaction between OA and warming showed mostly antagonistic effects on the physiology of both species. Overall, by comparison between the two species, CO 2 played a more significant role in regulating the growth rate and sinking rate of the large centric diatom Thalassiosira sp., whereas had more significant effects on the elemental compositions of the smaller pennate diatom N. closterium f.minutissima . These results suggest differential sensitivities of different diatom species with different ... |
author2 |
Natural Science Foundation of Tianjin City National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Cai, Ting Feng, Yuanyuan Wang, Yanan Li, Tongtong Wang, Jiancai Li, Wei Zhou, Weihua |
spellingShingle |
Cai, Ting Feng, Yuanyuan Wang, Yanan Li, Tongtong Wang, Jiancai Li, Wei Zhou, Weihua The Differential Responses of Coastal Diatoms to Ocean Acidification and Warming: A Comparison Between Thalassiosira sp. and Nitzschia closterium f.minutissima |
author_facet |
Cai, Ting Feng, Yuanyuan Wang, Yanan Li, Tongtong Wang, Jiancai Li, Wei Zhou, Weihua |
author_sort |
Cai, Ting |
title |
The Differential Responses of Coastal Diatoms to Ocean Acidification and Warming: A Comparison Between Thalassiosira sp. and Nitzschia closterium f.minutissima |
title_short |
The Differential Responses of Coastal Diatoms to Ocean Acidification and Warming: A Comparison Between Thalassiosira sp. and Nitzschia closterium f.minutissima |
title_full |
The Differential Responses of Coastal Diatoms to Ocean Acidification and Warming: A Comparison Between Thalassiosira sp. and Nitzschia closterium f.minutissima |
title_fullStr |
The Differential Responses of Coastal Diatoms to Ocean Acidification and Warming: A Comparison Between Thalassiosira sp. and Nitzschia closterium f.minutissima |
title_full_unstemmed |
The Differential Responses of Coastal Diatoms to Ocean Acidification and Warming: A Comparison Between Thalassiosira sp. and Nitzschia closterium f.minutissima |
title_sort |
differential responses of coastal diatoms to ocean acidification and warming: a comparison between thalassiosira sp. and nitzschia closterium f.minutissima |
publisher |
Frontiers Media SA |
publishDate |
2022 |
url |
http://dx.doi.org/10.3389/fmicb.2022.851149 https://www.frontiersin.org/articles/10.3389/fmicb.2022.851149/full |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Frontiers in Microbiology volume 13 ISSN 1664-302X |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmicb.2022.851149 |
container_title |
Frontiers in Microbiology |
container_volume |
13 |
_version_ |
1802648596685783040 |