Growth limitation of three Arctic sea-ice algae species: effects of salinitty, pH and inorganic carbon availability
The effect of salinity, pH, and dissolved inorganic carbon (TCO(2)) on growth and survival of three Arctic sea ice algal species, two diatoms (Fragilariopsis nana and Fragilariopsis sp.), and one species of chlorophyte (Chlamydomonas sp.) was assessed in controlled laboratory experiments. Our result...
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ftsydanskunivpub:oai:sdu.dk:publications/4d2495c6-56ca-4efb-b768-e3d2ed97b327 2023-05-15T14:25:01+02:00 Growth limitation of three Arctic sea-ice algae species: effects of salinitty, pH and inorganic carbon availability Søgaard, Dorte Haubjerg Hansen, Per Juel Rysgaard, Søren Glud, Ronnie N. 2011 https://portal.findresearcher.sdu.dk/da/publications/4d2495c6-56ca-4efb-b768-e3d2ed97b327 https://doi.org/10.1007/s00300-011-0976-3 dan dan info:eu-repo/semantics/restrictedAccess Søgaard , D H , Hansen , P J , Rysgaard , S & Glud , R N 2011 , ' Growth limitation of three Arctic sea-ice algae species: effects of salinitty, pH and inorganic carbon availability ' , Polar Biology , bind 34 , nr. 8 , s. 1157-1165 . https://doi.org/10.1007/s00300-011-0976-3 article 2011 ftsydanskunivpub https://doi.org/10.1007/s00300-011-0976-3 2022-08-14T08:30:30Z The effect of salinity, pH, and dissolved inorganic carbon (TCO(2)) on growth and survival of three Arctic sea ice algal species, two diatoms (Fragilariopsis nana and Fragilariopsis sp.), and one species of chlorophyte (Chlamydomonas sp.) was assessed in controlled laboratory experiments. Our results suggest that the chlorophyte and the two diatoms have different tolerance to fluctuations in salinity and pH. The two species of diatoms exhibited maximum growth rates at a salinity of 33, and growth rates at a salinity of 100 were reduced by 50% compared to at a salinity of 33. Growth ceased at a salinity of 150. The chlorophyte species was more sensitive to high salinities than the two diatom species. Growth rate of the chlorophyte was greatly reduced already at a salinity of 50 and it could not grow at salinities above 100. At salinity 33 and constant TCO(2) concentration, all species exhibited maximal growth rate at pH 8.0 and/or 8.5. The two diatom species stopped growing at pH > 9.5, while the chlorophyte species still was able to grow at a rate which was 1/3 of its maximum growth rate at pH 10. Thus, Chlamydomonas sp. was able to grow at high pH levels in the succession experiment and therefore outcompeted the two diatom species. Complementary experiments indicated that growth was mainly limited by pH, while inorganic carbon limitation only played an important role at very high pH levels and low TCO(2) concentrations. Article in Journal/Newspaper Arctic Arctic ice algae Polar Biology Sea ice University of Southern Denmark Research Portal Arctic Polar Biology 34 8 1157 1165 |
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Open Polar |
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University of Southern Denmark Research Portal |
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ftsydanskunivpub |
language |
Danish |
description |
The effect of salinity, pH, and dissolved inorganic carbon (TCO(2)) on growth and survival of three Arctic sea ice algal species, two diatoms (Fragilariopsis nana and Fragilariopsis sp.), and one species of chlorophyte (Chlamydomonas sp.) was assessed in controlled laboratory experiments. Our results suggest that the chlorophyte and the two diatoms have different tolerance to fluctuations in salinity and pH. The two species of diatoms exhibited maximum growth rates at a salinity of 33, and growth rates at a salinity of 100 were reduced by 50% compared to at a salinity of 33. Growth ceased at a salinity of 150. The chlorophyte species was more sensitive to high salinities than the two diatom species. Growth rate of the chlorophyte was greatly reduced already at a salinity of 50 and it could not grow at salinities above 100. At salinity 33 and constant TCO(2) concentration, all species exhibited maximal growth rate at pH 8.0 and/or 8.5. The two diatom species stopped growing at pH > 9.5, while the chlorophyte species still was able to grow at a rate which was 1/3 of its maximum growth rate at pH 10. Thus, Chlamydomonas sp. was able to grow at high pH levels in the succession experiment and therefore outcompeted the two diatom species. Complementary experiments indicated that growth was mainly limited by pH, while inorganic carbon limitation only played an important role at very high pH levels and low TCO(2) concentrations. |
format |
Article in Journal/Newspaper |
author |
Søgaard, Dorte Haubjerg Hansen, Per Juel Rysgaard, Søren Glud, Ronnie N. |
spellingShingle |
Søgaard, Dorte Haubjerg Hansen, Per Juel Rysgaard, Søren Glud, Ronnie N. Growth limitation of three Arctic sea-ice algae species: effects of salinitty, pH and inorganic carbon availability |
author_facet |
Søgaard, Dorte Haubjerg Hansen, Per Juel Rysgaard, Søren Glud, Ronnie N. |
author_sort |
Søgaard, Dorte Haubjerg |
title |
Growth limitation of three Arctic sea-ice algae species: effects of salinitty, pH and inorganic carbon availability |
title_short |
Growth limitation of three Arctic sea-ice algae species: effects of salinitty, pH and inorganic carbon availability |
title_full |
Growth limitation of three Arctic sea-ice algae species: effects of salinitty, pH and inorganic carbon availability |
title_fullStr |
Growth limitation of three Arctic sea-ice algae species: effects of salinitty, pH and inorganic carbon availability |
title_full_unstemmed |
Growth limitation of three Arctic sea-ice algae species: effects of salinitty, pH and inorganic carbon availability |
title_sort |
growth limitation of three arctic sea-ice algae species: effects of salinitty, ph and inorganic carbon availability |
publishDate |
2011 |
url |
https://portal.findresearcher.sdu.dk/da/publications/4d2495c6-56ca-4efb-b768-e3d2ed97b327 https://doi.org/10.1007/s00300-011-0976-3 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic ice algae Polar Biology Sea ice |
genre_facet |
Arctic Arctic ice algae Polar Biology Sea ice |
op_source |
Søgaard , D H , Hansen , P J , Rysgaard , S & Glud , R N 2011 , ' Growth limitation of three Arctic sea-ice algae species: effects of salinitty, pH and inorganic carbon availability ' , Polar Biology , bind 34 , nr. 8 , s. 1157-1165 . https://doi.org/10.1007/s00300-011-0976-3 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00300-011-0976-3 |
container_title |
Polar Biology |
container_volume |
34 |
container_issue |
8 |
container_start_page |
1157 |
op_container_end_page |
1165 |
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1766297444119740416 |