Diversity of ocean acidification effects on marine N2 fixers
Considering the important role of N2 fixation for primary productivity and CO2 sequestration, it is crucial to assess the response of diazotrophs to ocean acidification. Previous studies on the genus Trichodesmium suggested a strong sensitivity towards ocean acidification. In view of the large funct...
Main Authors: | , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2014
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.834555 https://doi.org/10.1594/PANGAEA.834555 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.834555 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.834555 2024-09-15T18:27:49+00:00 Diversity of ocean acidification effects on marine N2 fixers Eichner, Meri Rost, Björn Kranz, Sven A 2014 text/tab-separated-values, 241 data points https://doi.pangaea.de/10.1594/PANGAEA.834555 https://doi.org/10.1594/PANGAEA.834555 en eng PANGAEA Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0 [webpage]. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.834555 https://doi.org/10.1594/PANGAEA.834555 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Eichner, Meri; Rost, Björn; Kranz, Sven A (2014): Diversity of ocean acidification effects on marine N2 fixers. Journal of Experimental Marine Biology and Ecology, 457, 199-207, https://doi.org/10.1016/j.jembe.2014.04.015 Alkalinity total standard deviation Aragonite saturation state Bacteria Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Calothrix rhizosoleniae Carbon inorganic dissolved organic particulate/Nitrogen particulate ratio Carbonate ion Carbonate system computation flag Carbon dioxide Carbon fixation rate per chlorophyll a Chlorophyll a Chlorophyll a per cell Coulometric titration Cyanobacteria Cyanothece sp. Ethene production Ethene production per cell Ethene production standard deviation Fugacity of carbon dioxide (water) at sea surface temperature (wet air) dataset 2014 ftpangaea https://doi.org/10.1594/PANGAEA.83455510.1016/j.jembe.2014.04.015 2024-07-24T02:31:32Z Considering the important role of N2 fixation for primary productivity and CO2 sequestration, it is crucial to assess the response of diazotrophs to ocean acidification. Previous studies on the genus Trichodesmium suggested a strong sensitivity towards ocean acidification. In view of the large functional diversity in N2 fixers, the objective of this study was to improve our knowledge of the CO2 responses of other diazotrophs. To this end, the single-celled Cyanothece sp. and two heterocystous species, Nodularia spumigena and the symbiotic Calothrix rhizosoleniae, were acclimated to two pCO2 levels (380 vs. 980 µatm). Growth rates, cellular composition (carbon, nitrogen and chlorophyll a) as well as carbon and N2 fixation rates (14C incorporation, acetylene reduction) were measured and compared to literature data on different N2 fixers. The three species investigated in this study responded differently to elevated pCO2, showing enhanced, decreased as well as unaltered growth and production rates. For instance, Cyanothece increased production rates with pCO2, which is in line with the general view that N2 fixers benefit from ocean acidification. Due to lowered growth and production of Nodularia, nitrogen input to the Baltic Sea might decrease in the future. In Calothrix, no significant changes in growth or production could be observed, even though N2 fixation was stimulated under elevated pCO2. Reviewing literature data confirmed a large variability in CO2 sensitivity across diazotrophs. The contrasting response patterns in our and previous studies were discussed with regard to the carbonate chemistry in the respective natural habitats, the mode of N2 fixation as well as differences in cellular energy limitation between the species. The group-specific CO2 sensitivities will impact differently on future biogeochemical cycles of open-ocean environments and systems like the Baltic Sea and should therefore be considered in models estimating climate feedback effects. Dataset Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Alkalinity total standard deviation Aragonite saturation state Bacteria Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Calothrix rhizosoleniae Carbon inorganic dissolved organic particulate/Nitrogen particulate ratio Carbonate ion Carbonate system computation flag Carbon dioxide Carbon fixation rate per chlorophyll a Chlorophyll a Chlorophyll a per cell Coulometric titration Cyanobacteria Cyanothece sp. Ethene production Ethene production per cell Ethene production standard deviation Fugacity of carbon dioxide (water) at sea surface temperature (wet air) |
spellingShingle |
Alkalinity total standard deviation Aragonite saturation state Bacteria Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Calothrix rhizosoleniae Carbon inorganic dissolved organic particulate/Nitrogen particulate ratio Carbonate ion Carbonate system computation flag Carbon dioxide Carbon fixation rate per chlorophyll a Chlorophyll a Chlorophyll a per cell Coulometric titration Cyanobacteria Cyanothece sp. Ethene production Ethene production per cell Ethene production standard deviation Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Eichner, Meri Rost, Björn Kranz, Sven A Diversity of ocean acidification effects on marine N2 fixers |
topic_facet |
Alkalinity total standard deviation Aragonite saturation state Bacteria Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Calothrix rhizosoleniae Carbon inorganic dissolved organic particulate/Nitrogen particulate ratio Carbonate ion Carbonate system computation flag Carbon dioxide Carbon fixation rate per chlorophyll a Chlorophyll a Chlorophyll a per cell Coulometric titration Cyanobacteria Cyanothece sp. Ethene production Ethene production per cell Ethene production standard deviation Fugacity of carbon dioxide (water) at sea surface temperature (wet air) |
description |
Considering the important role of N2 fixation for primary productivity and CO2 sequestration, it is crucial to assess the response of diazotrophs to ocean acidification. Previous studies on the genus Trichodesmium suggested a strong sensitivity towards ocean acidification. In view of the large functional diversity in N2 fixers, the objective of this study was to improve our knowledge of the CO2 responses of other diazotrophs. To this end, the single-celled Cyanothece sp. and two heterocystous species, Nodularia spumigena and the symbiotic Calothrix rhizosoleniae, were acclimated to two pCO2 levels (380 vs. 980 µatm). Growth rates, cellular composition (carbon, nitrogen and chlorophyll a) as well as carbon and N2 fixation rates (14C incorporation, acetylene reduction) were measured and compared to literature data on different N2 fixers. The three species investigated in this study responded differently to elevated pCO2, showing enhanced, decreased as well as unaltered growth and production rates. For instance, Cyanothece increased production rates with pCO2, which is in line with the general view that N2 fixers benefit from ocean acidification. Due to lowered growth and production of Nodularia, nitrogen input to the Baltic Sea might decrease in the future. In Calothrix, no significant changes in growth or production could be observed, even though N2 fixation was stimulated under elevated pCO2. Reviewing literature data confirmed a large variability in CO2 sensitivity across diazotrophs. The contrasting response patterns in our and previous studies were discussed with regard to the carbonate chemistry in the respective natural habitats, the mode of N2 fixation as well as differences in cellular energy limitation between the species. The group-specific CO2 sensitivities will impact differently on future biogeochemical cycles of open-ocean environments and systems like the Baltic Sea and should therefore be considered in models estimating climate feedback effects. |
format |
Dataset |
author |
Eichner, Meri Rost, Björn Kranz, Sven A |
author_facet |
Eichner, Meri Rost, Björn Kranz, Sven A |
author_sort |
Eichner, Meri |
title |
Diversity of ocean acidification effects on marine N2 fixers |
title_short |
Diversity of ocean acidification effects on marine N2 fixers |
title_full |
Diversity of ocean acidification effects on marine N2 fixers |
title_fullStr |
Diversity of ocean acidification effects on marine N2 fixers |
title_full_unstemmed |
Diversity of ocean acidification effects on marine N2 fixers |
title_sort |
diversity of ocean acidification effects on marine n2 fixers |
publisher |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.834555 https://doi.org/10.1594/PANGAEA.834555 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Supplement to: Eichner, Meri; Rost, Björn; Kranz, Sven A (2014): Diversity of ocean acidification effects on marine N2 fixers. Journal of Experimental Marine Biology and Ecology, 457, 199-207, https://doi.org/10.1016/j.jembe.2014.04.015 |
op_relation |
Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0 [webpage]. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.834555 https://doi.org/10.1594/PANGAEA.834555 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.83455510.1016/j.jembe.2014.04.015 |
_version_ |
1810469080135630848 |