Comparative responses of two dominant Antarctic phytoplankton taxa to interactions between ocean acidification, warming, irradiance, and iron availability
We investigated the responses of the ecologically dominant Antarctic phytoplankton species Phaeocystis antarctica (a prymnesiophyte) and Fragilariopsis cylindrus (a diatom) to a clustered matrix of three global change variables (CO 2 , mixed‐layer depth, and temperature) under both iron (Fe)‐replete...
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crwiley:10.4319/lo.2014.59.6.1919 2024-04-28T08:01:32+00:00 Comparative responses of two dominant Antarctic phytoplankton taxa to interactions between ocean acidification, warming, irradiance, and iron availability Xu, Kai Fu, Fei‐Xue Hutchins, David A. 2014 http://dx.doi.org/10.4319/lo.2014.59.6.1919 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.2014.59.6.1919 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.2014.59.6.1919 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 59, issue 6, page 1919-1931 ISSN 0024-3590 1939-5590 Aquatic Science Oceanography journal-article 2014 crwiley https://doi.org/10.4319/lo.2014.59.6.1919 2024-04-08T06:53:58Z We investigated the responses of the ecologically dominant Antarctic phytoplankton species Phaeocystis antarctica (a prymnesiophyte) and Fragilariopsis cylindrus (a diatom) to a clustered matrix of three global change variables (CO 2 , mixed‐layer depth, and temperature) under both iron (Fe)‐replete and Fe‐limited conditions based roughly on the Intergovernmental Panel on Climate Change (IPCC) A2 scenario: (1) Current conditions, 39 Pa (380 ppmv) CO 2 , 50 µmol photons m −2 s −1 light, and 2°C; (2) Year 2060, 61 Pa (600 ppmv) CO 2 , 100 µmol photons m −2 s −1 light, and 4°C; (3) Year 2100, 81 Pa (800 ppmv) CO 2 , 150 µmol photons m −2 s −1 light, and 6°C. The combined interactive effects of these global change variables and changing Fe availability on growth, primary production, and cell morphology are species specific. A competition experiment suggested that future conditions could lead to a shift away from P. antarctica and toward diatoms such as F. cylindrus. Along with decreases in diatom cell size and shifts from prymnesiophyte colonies to single cells under the future scenario, this could potentially lead to decreased carbon export to the deep ocean. Fe : C uptake ratios of both species increased under future conditions, suggesting phytoplankton of the Southern Ocean will increase their Fe requirements relative to carbon fixation. The interactive effects of Fe, light, CO 2 , and temperature on Antarctic phytoplankton need to be considered when predicting the future responses of biology and biogeochemistry in this region. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ocean acidification Southern Ocean Wiley Online Library Limnology and Oceanography 59 6 1919 1931 |
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Wiley Online Library |
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crwiley |
language |
English |
topic |
Aquatic Science Oceanography |
spellingShingle |
Aquatic Science Oceanography Xu, Kai Fu, Fei‐Xue Hutchins, David A. Comparative responses of two dominant Antarctic phytoplankton taxa to interactions between ocean acidification, warming, irradiance, and iron availability |
topic_facet |
Aquatic Science Oceanography |
description |
We investigated the responses of the ecologically dominant Antarctic phytoplankton species Phaeocystis antarctica (a prymnesiophyte) and Fragilariopsis cylindrus (a diatom) to a clustered matrix of three global change variables (CO 2 , mixed‐layer depth, and temperature) under both iron (Fe)‐replete and Fe‐limited conditions based roughly on the Intergovernmental Panel on Climate Change (IPCC) A2 scenario: (1) Current conditions, 39 Pa (380 ppmv) CO 2 , 50 µmol photons m −2 s −1 light, and 2°C; (2) Year 2060, 61 Pa (600 ppmv) CO 2 , 100 µmol photons m −2 s −1 light, and 4°C; (3) Year 2100, 81 Pa (800 ppmv) CO 2 , 150 µmol photons m −2 s −1 light, and 6°C. The combined interactive effects of these global change variables and changing Fe availability on growth, primary production, and cell morphology are species specific. A competition experiment suggested that future conditions could lead to a shift away from P. antarctica and toward diatoms such as F. cylindrus. Along with decreases in diatom cell size and shifts from prymnesiophyte colonies to single cells under the future scenario, this could potentially lead to decreased carbon export to the deep ocean. Fe : C uptake ratios of both species increased under future conditions, suggesting phytoplankton of the Southern Ocean will increase their Fe requirements relative to carbon fixation. The interactive effects of Fe, light, CO 2 , and temperature on Antarctic phytoplankton need to be considered when predicting the future responses of biology and biogeochemistry in this region. |
format |
Article in Journal/Newspaper |
author |
Xu, Kai Fu, Fei‐Xue Hutchins, David A. |
author_facet |
Xu, Kai Fu, Fei‐Xue Hutchins, David A. |
author_sort |
Xu, Kai |
title |
Comparative responses of two dominant Antarctic phytoplankton taxa to interactions between ocean acidification, warming, irradiance, and iron availability |
title_short |
Comparative responses of two dominant Antarctic phytoplankton taxa to interactions between ocean acidification, warming, irradiance, and iron availability |
title_full |
Comparative responses of two dominant Antarctic phytoplankton taxa to interactions between ocean acidification, warming, irradiance, and iron availability |
title_fullStr |
Comparative responses of two dominant Antarctic phytoplankton taxa to interactions between ocean acidification, warming, irradiance, and iron availability |
title_full_unstemmed |
Comparative responses of two dominant Antarctic phytoplankton taxa to interactions between ocean acidification, warming, irradiance, and iron availability |
title_sort |
comparative responses of two dominant antarctic phytoplankton taxa to interactions between ocean acidification, warming, irradiance, and iron availability |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.4319/lo.2014.59.6.1919 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.2014.59.6.1919 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.2014.59.6.1919 |
genre |
Antarc* Antarctic Antarctica Ocean acidification Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Ocean acidification Southern Ocean |
op_source |
Limnology and Oceanography volume 59, issue 6, page 1919-1931 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.2014.59.6.1919 |
container_title |
Limnology and Oceanography |
container_volume |
59 |
container_issue |
6 |
container_start_page |
1919 |
op_container_end_page |
1931 |
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1797573235655573504 |