A data–model synthesis to explain variability in calcification observed during a CO2 perturbation mesocosm experiment
The effect of ocean acidification on growth and calcification of the marine algae Emiliania huxleyi was investigated in a series of mesocosm experiments where enclosed water volumes that comprised a natural plankton community were exposed to different carbon dioxide (CO2) concentrations. Calcificati...
Published in: | Biogeosciences |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2017
|
Subjects: | |
Online Access: | https://doi.org/10.5194/bg-14-1857-2017 https://noa.gwlb.de/receive/cop_mods_00010388 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010345/bg-14-1857-2017.pdf https://bg.copernicus.org/articles/14/1857/2017/bg-14-1857-2017.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00010388 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00010388 2023-05-15T17:49:37+02:00 A data–model synthesis to explain variability in calcification observed during a CO2 perturbation mesocosm experiment Krishna, Shubham Schartau, Markus 2017-04 electronic https://doi.org/10.5194/bg-14-1857-2017 https://noa.gwlb.de/receive/cop_mods_00010388 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010345/bg-14-1857-2017.pdf https://bg.copernicus.org/articles/14/1857/2017/bg-14-1857-2017.pdf eng eng Copernicus Publications Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-14-1857-2017 https://noa.gwlb.de/receive/cop_mods_00010388 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010345/bg-14-1857-2017.pdf https://bg.copernicus.org/articles/14/1857/2017/bg-14-1857-2017.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2017 ftnonlinearchiv https://doi.org/10.5194/bg-14-1857-2017 2022-02-08T22:57:06Z The effect of ocean acidification on growth and calcification of the marine algae Emiliania huxleyi was investigated in a series of mesocosm experiments where enclosed water volumes that comprised a natural plankton community were exposed to different carbon dioxide (CO2) concentrations. Calcification rates observed during those experiments were found to be highly variable, even among replicate mesocosms that were subject to similar CO2 perturbations. Here, data from an ocean acidification mesocosm experiment are reanalysed with an optimality-based dynamical plankton model. According to our model approach, cellular calcite formation is sensitive to variations in CO2 at the organism level. We investigate the temporal changes and variability in observations, with a focus on resolving observed differences in total alkalinity and particulate inorganic carbon (PIC). We explore how much of the variability in the data can be explained by variations of the initial conditions and by the level of CO2 perturbation. Nine mesocosms of one experiment were sorted into three groups of high, medium, and low calcification rates and analysed separately. The spread of the three optimised ensemble model solutions captures most of the observed variability. Our results show that small variations in initial abundance of coccolithophores and the prevailing physiological acclimation states generate differences in calcification that are larger than those induced by ocean acidification. Accordingly, large deviations between optimal mass flux estimates of carbon and of nitrogen are identified even between mesocosms that were subject to similar ocean acidification conditions. With our model-based data analysis we document how an ocean acidification response signal in calcification can be disentangled from the observed variability in PIC. Article in Journal/Newspaper Ocean acidification Niedersächsisches Online-Archiv NOA Biogeosciences 14 7 1857 1882 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Krishna, Shubham Schartau, Markus A data–model synthesis to explain variability in calcification observed during a CO2 perturbation mesocosm experiment |
topic_facet |
article Verlagsveröffentlichung |
description |
The effect of ocean acidification on growth and calcification of the marine algae Emiliania huxleyi was investigated in a series of mesocosm experiments where enclosed water volumes that comprised a natural plankton community were exposed to different carbon dioxide (CO2) concentrations. Calcification rates observed during those experiments were found to be highly variable, even among replicate mesocosms that were subject to similar CO2 perturbations. Here, data from an ocean acidification mesocosm experiment are reanalysed with an optimality-based dynamical plankton model. According to our model approach, cellular calcite formation is sensitive to variations in CO2 at the organism level. We investigate the temporal changes and variability in observations, with a focus on resolving observed differences in total alkalinity and particulate inorganic carbon (PIC). We explore how much of the variability in the data can be explained by variations of the initial conditions and by the level of CO2 perturbation. Nine mesocosms of one experiment were sorted into three groups of high, medium, and low calcification rates and analysed separately. The spread of the three optimised ensemble model solutions captures most of the observed variability. Our results show that small variations in initial abundance of coccolithophores and the prevailing physiological acclimation states generate differences in calcification that are larger than those induced by ocean acidification. Accordingly, large deviations between optimal mass flux estimates of carbon and of nitrogen are identified even between mesocosms that were subject to similar ocean acidification conditions. With our model-based data analysis we document how an ocean acidification response signal in calcification can be disentangled from the observed variability in PIC. |
format |
Article in Journal/Newspaper |
author |
Krishna, Shubham Schartau, Markus |
author_facet |
Krishna, Shubham Schartau, Markus |
author_sort |
Krishna, Shubham |
title |
A data–model synthesis to explain variability in calcification observed during a CO2 perturbation mesocosm experiment |
title_short |
A data–model synthesis to explain variability in calcification observed during a CO2 perturbation mesocosm experiment |
title_full |
A data–model synthesis to explain variability in calcification observed during a CO2 perturbation mesocosm experiment |
title_fullStr |
A data–model synthesis to explain variability in calcification observed during a CO2 perturbation mesocosm experiment |
title_full_unstemmed |
A data–model synthesis to explain variability in calcification observed during a CO2 perturbation mesocosm experiment |
title_sort |
data–model synthesis to explain variability in calcification observed during a co2 perturbation mesocosm experiment |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/bg-14-1857-2017 https://noa.gwlb.de/receive/cop_mods_00010388 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010345/bg-14-1857-2017.pdf https://bg.copernicus.org/articles/14/1857/2017/bg-14-1857-2017.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-14-1857-2017 https://noa.gwlb.de/receive/cop_mods_00010388 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010345/bg-14-1857-2017.pdf https://bg.copernicus.org/articles/14/1857/2017/bg-14-1857-2017.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-14-1857-2017 |
container_title |
Biogeosciences |
container_volume |
14 |
container_issue |
7 |
container_start_page |
1857 |
op_container_end_page |
1882 |
_version_ |
1766156006433226752 |