uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Phosphorus limitation and heat stress decrease calcification in Emiliania huxleyi
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology. Univ Oslo, Dept Biosci, Sect Aquat Biol & Toxicol, N-0316 Oslo, Norway.ORCID iD: 0000-0003-2613-945x
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology. Univ Oslo, Dept Biosci, Ctr Ecol & Evolutionary Synth, N-0316 Oslo, Norway.
2018 (English)In: Biogeosciences, ISSN 1726-4170, E-ISSN 1726-4189, Vol. 15, p. 833-845Article in journal (Refereed) Published
Abstract [en]

Calcifying haptophytes (coccolithophores) sequester carbon in the form of organic and inorganic cellular components (coccoliths). We examined the effect of phosphorus (P) limitation and heat stress on particulate organic and inorganic carbon (calcite) production in the coccolithophore Emiliania huxleyi. Both environmental stressors are related to rising CO2 levels and affect carbon production in marine microalgae, which in turn impacts biogeochemical cycling. Using semi-continuous cultures, we show that P-limitation and heat stress decrease the calcification rate in E. huxleyi. This could lessen the ballasting effect of coccoliths and weaken carbon export out of the photic zone. However, using batch cultures, we show that different culturing approaches (batch versus semi-continuous) induce different physiologies. This affects the ratio of inorganic (PIC) to organic (POC) carbon and complicates general predictions on the effect of P-limitation on the PIC / POC ratio. Furthermore, heat stress increases P-requirements in E. huxleyi, possibly leading to lower standing stocks in a warmer ocean, especially if this is linked to lower nutrient input. In summary, the predicted rise in global temperature and resulting decrease in nutrient availability may first of all decrease CO2 sequestration by coccolithophores through lower overall carbon production. Secondly, the export of carbon may be diminished by a decrease in calcification and a weaker coccolith ballasting effect.

Place, publisher, year, edition, pages
2018. Vol. 15, p. 833-845
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-321897DOI: 10.5194/bg-15-833-2018ISI: 000424704700003OAI: oai:DiVA.org:uu-321897DiVA, id: diva2:1095088
Funder
Knut and Alice Wallenberg Foundation, KAW 2009.0287Available from: 2017-05-11 Created: 2017-05-11 Last updated: 2018-03-21Bibliographically approved

Open Access in DiVA

fulltext(1021 kB)8 downloads
File information
File name FULLTEXT01.pdfFile size 1021 kBChecksum SHA-512
2c4c920751afd5f542449c68b3cb81e46583084fdafcc3ce1703e77246e9b65a28e839dd4c142d01721bec97f52f8967eef3cfc9b588ac62197d89f761e2e1d8
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Authority records BETA

Supraha, LukaHenderiks, Jorijntje

Search in DiVA

By author/editor
Supraha, LukaHenderiks, Jorijntje
By organisation
Palaeobiology
In the same journal
Biogeosciences
Earth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 8 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 378 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf