Environmental controls on the elemental composition of a Southern Hemisphere strain of the coccolithophore Emiliania huxleyi
A series of semi-continuous incubation experiments were conducted with the coccolithophore Emiliania huxleyi strain NIWA1108 (Southern Ocean isolate) to examine the effects of five environmental drivers (nitrate and phosphate concentrations, irradiance, temperature, and partial pressure of CO 2 ( p...
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ftdoajarticles:oai:doaj.org/article:8d38b45153bf4af39d72982d00d00490 2023-05-15T18:25:42+02:00 Environmental controls on the elemental composition of a Southern Hemisphere strain of the coccolithophore Emiliania huxleyi Y. Feng M. Y. Roleda E. Armstrong C. S. Law P. W. Boyd C. L. Hurd 2018-01-01T00:00:00Z https://doi.org/10.5194/bg-15-581-2018 https://doaj.org/article/8d38b45153bf4af39d72982d00d00490 EN eng Copernicus Publications https://www.biogeosciences.net/15/581/2018/bg-15-581-2018.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-15-581-2018 1726-4170 1726-4189 https://doaj.org/article/8d38b45153bf4af39d72982d00d00490 Biogeosciences, Vol 15, Pp 581-595 (2018) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2018 ftdoajarticles https://doi.org/10.5194/bg-15-581-2018 2022-12-31T06:03:12Z A series of semi-continuous incubation experiments were conducted with the coccolithophore Emiliania huxleyi strain NIWA1108 (Southern Ocean isolate) to examine the effects of five environmental drivers (nitrate and phosphate concentrations, irradiance, temperature, and partial pressure of CO 2 ( p CO 2 )) on both the physiological rates and elemental composition of the coccolithophore. Here, we report the alteration of the elemental composition of E. huxleyi in response to the changes in these environmental drivers. A series of dose–response curves for the cellular elemental composition of E. huxleyi were fitted for each of the five drivers across an environmentally representative gradient. The importance of each driver in regulating the elemental composition of E. huxleyi was ranked using a semi-quantitative approach. The percentage variations in elemental composition arising from the change in each driver between present-day and model-projected conditions for the year 2100 were calculated. Temperature was the most important driver controlling both cellular particulate organic and inorganic carbon content, whereas nutrient concentrations were the most important regulator of cellular particulate nitrogen and phosphorus of E. huxleyi . In contrast, elevated p CO 2 had the greatest influence on cellular particulate inorganic carbon to organic carbon ratio, resulting in a decrease in the ratio. Our results indicate that the different environmental drivers play specific roles in regulating the elemental composition of E. huxleyi with wide-reaching implications for coccolithophore-related marine biogeochemical cycles, as a consequence of the regulation of E. huxleyi physiological processes. Article in Journal/Newspaper Southern Ocean Directory of Open Access Journals: DOAJ Articles Southern Ocean Biogeosciences 15 2 581 595 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 Y. Feng M. Y. Roleda E. Armstrong C. S. Law P. W. Boyd C. L. Hurd Environmental controls on the elemental composition of a Southern Hemisphere strain of the coccolithophore Emiliania huxleyi |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
A series of semi-continuous incubation experiments were conducted with the coccolithophore Emiliania huxleyi strain NIWA1108 (Southern Ocean isolate) to examine the effects of five environmental drivers (nitrate and phosphate concentrations, irradiance, temperature, and partial pressure of CO 2 ( p CO 2 )) on both the physiological rates and elemental composition of the coccolithophore. Here, we report the alteration of the elemental composition of E. huxleyi in response to the changes in these environmental drivers. A series of dose–response curves for the cellular elemental composition of E. huxleyi were fitted for each of the five drivers across an environmentally representative gradient. The importance of each driver in regulating the elemental composition of E. huxleyi was ranked using a semi-quantitative approach. The percentage variations in elemental composition arising from the change in each driver between present-day and model-projected conditions for the year 2100 were calculated. Temperature was the most important driver controlling both cellular particulate organic and inorganic carbon content, whereas nutrient concentrations were the most important regulator of cellular particulate nitrogen and phosphorus of E. huxleyi . In contrast, elevated p CO 2 had the greatest influence on cellular particulate inorganic carbon to organic carbon ratio, resulting in a decrease in the ratio. Our results indicate that the different environmental drivers play specific roles in regulating the elemental composition of E. huxleyi with wide-reaching implications for coccolithophore-related marine biogeochemical cycles, as a consequence of the regulation of E. huxleyi physiological processes. |
format |
Article in Journal/Newspaper |
author |
Y. Feng M. Y. Roleda E. Armstrong C. S. Law P. W. Boyd C. L. Hurd |
author_facet |
Y. Feng M. Y. Roleda E. Armstrong C. S. Law P. W. Boyd C. L. Hurd |
author_sort |
Y. Feng |
title |
Environmental controls on the elemental composition of a Southern Hemisphere strain of the coccolithophore Emiliania huxleyi |
title_short |
Environmental controls on the elemental composition of a Southern Hemisphere strain of the coccolithophore Emiliania huxleyi |
title_full |
Environmental controls on the elemental composition of a Southern Hemisphere strain of the coccolithophore Emiliania huxleyi |
title_fullStr |
Environmental controls on the elemental composition of a Southern Hemisphere strain of the coccolithophore Emiliania huxleyi |
title_full_unstemmed |
Environmental controls on the elemental composition of a Southern Hemisphere strain of the coccolithophore Emiliania huxleyi |
title_sort |
environmental controls on the elemental composition of a southern hemisphere strain of the coccolithophore emiliania huxleyi |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/bg-15-581-2018 https://doaj.org/article/8d38b45153bf4af39d72982d00d00490 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Biogeosciences, Vol 15, Pp 581-595 (2018) |
op_relation |
https://www.biogeosciences.net/15/581/2018/bg-15-581-2018.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-15-581-2018 1726-4170 1726-4189 https://doaj.org/article/8d38b45153bf4af39d72982d00d00490 |
op_doi |
https://doi.org/10.5194/bg-15-581-2018 |
container_title |
Biogeosciences |
container_volume |
15 |
container_issue |
2 |
container_start_page |
581 |
op_container_end_page |
595 |
_version_ |
1766207316565164032 |