Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus
The effects of ocean acidification and increased temperature on physiology of six strains of the polar diatom Fragilariopsis cylindrus from Greenland were investigated. Experiments were performed under manipulated pH levels (8.0, 7.7, 7.4, and 7.1) and different temperatures (1, 5 and 8 °C) to simul...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2015
|
Subjects: | |
Online Access: | https://orbit.dtu.dk/en/publications/9dd48348-fae9-43fa-92d2-87af2a6c8e02 https://doi.org/10.5194/bgd-12-4627-2015 https://backend.orbit.dtu.dk/ws/files/126704919/bgd_12_4627_2015.pdf |
id |
ftdtupubl:oai:pure.atira.dk:publications/9dd48348-fae9-43fa-92d2-87af2a6c8e02 |
---|---|
record_format |
openpolar |
spelling |
ftdtupubl:oai:pure.atira.dk:publications/9dd48348-fae9-43fa-92d2-87af2a6c8e02 2023-05-15T16:30:14+02:00 Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus Pančić, M. Hansen, Peter Juul Tammilehto, A. Lundholm, N. 2015 application/pdf https://orbit.dtu.dk/en/publications/9dd48348-fae9-43fa-92d2-87af2a6c8e02 https://doi.org/10.5194/bgd-12-4627-2015 https://backend.orbit.dtu.dk/ws/files/126704919/bgd_12_4627_2015.pdf eng eng info:eu-repo/semantics/openAccess Pančić , M , Hansen , P J , Tammilehto , A & Lundholm , N 2015 , ' Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus ' , Biogeosciences Discussions , vol. 12 , no. 6 , pp. 4627-4654 . https://doi.org/10.5194/bgd-12-4627-2015 /dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water article 2015 ftdtupubl https://doi.org/10.5194/bgd-12-4627-2015 2022-11-03T00:07:14Z The effects of ocean acidification and increased temperature on physiology of six strains of the polar diatom Fragilariopsis cylindrus from Greenland were investigated. Experiments were performed under manipulated pH levels (8.0, 7.7, 7.4, and 7.1) and different temperatures (1, 5 and 8 °C) to simulate changes from present to plausible future levels. Each of the 12 scenarios was run for 7 days, and a significant interaction between temperature and pH on growth was detected. By combining increased temperature and acidification, the two factors counterbalanced each other, and therefore no effect on the growth rates was found. However, the growth rates increased with elevated temperatures by ∼20–50% depending on the strain. In addition, a general negative effect of increasing acidification on growth was observed. At pH 7.7 and 7.4, the growth response varied considerably among strains. However, a more uniform response was detected at pH 7.1 with most of the strains exhibiting reduced growth rates by 20–37% compared to pH 8.0. It should be emphasized that a significant interaction between temperature and pH was found, meaning that the combination of the two parameters affected growth differently than when considering one at a time. Based on these results, we anticipate that the polar diatom F. cylindrus will be unaffected by changes in temperature and pH within the range expected by the end of the century. In each simulated scenario, the variation in growth rates among the strains was larger than the variation observed due to the whole range of changes in either pH or temperature. Climate change may therefore not affect the species as such, but may lead to changes in the population structure of the species, with the strains exhibiting high phenotypic plasticity, in terms of temperature and pH tolerance towards future conditions, dominating the population. Article in Journal/Newspaper Greenland Ocean acidification Technical University of Denmark: DTU Orbit Greenland |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water |
spellingShingle |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water Pančić, M. Hansen, Peter Juul Tammilehto, A. Lundholm, N. Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus |
topic_facet |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water |
description |
The effects of ocean acidification and increased temperature on physiology of six strains of the polar diatom Fragilariopsis cylindrus from Greenland were investigated. Experiments were performed under manipulated pH levels (8.0, 7.7, 7.4, and 7.1) and different temperatures (1, 5 and 8 °C) to simulate changes from present to plausible future levels. Each of the 12 scenarios was run for 7 days, and a significant interaction between temperature and pH on growth was detected. By combining increased temperature and acidification, the two factors counterbalanced each other, and therefore no effect on the growth rates was found. However, the growth rates increased with elevated temperatures by ∼20–50% depending on the strain. In addition, a general negative effect of increasing acidification on growth was observed. At pH 7.7 and 7.4, the growth response varied considerably among strains. However, a more uniform response was detected at pH 7.1 with most of the strains exhibiting reduced growth rates by 20–37% compared to pH 8.0. It should be emphasized that a significant interaction between temperature and pH was found, meaning that the combination of the two parameters affected growth differently than when considering one at a time. Based on these results, we anticipate that the polar diatom F. cylindrus will be unaffected by changes in temperature and pH within the range expected by the end of the century. In each simulated scenario, the variation in growth rates among the strains was larger than the variation observed due to the whole range of changes in either pH or temperature. Climate change may therefore not affect the species as such, but may lead to changes in the population structure of the species, with the strains exhibiting high phenotypic plasticity, in terms of temperature and pH tolerance towards future conditions, dominating the population. |
format |
Article in Journal/Newspaper |
author |
Pančić, M. Hansen, Peter Juul Tammilehto, A. Lundholm, N. |
author_facet |
Pančić, M. Hansen, Peter Juul Tammilehto, A. Lundholm, N. |
author_sort |
Pančić, M. |
title |
Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus |
title_short |
Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus |
title_full |
Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus |
title_fullStr |
Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus |
title_full_unstemmed |
Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus |
title_sort |
resilience to temperature and ph changes in a future climate change scenario in six strains of the polar diatom fragilariopsis cylindrus |
publishDate |
2015 |
url |
https://orbit.dtu.dk/en/publications/9dd48348-fae9-43fa-92d2-87af2a6c8e02 https://doi.org/10.5194/bgd-12-4627-2015 https://backend.orbit.dtu.dk/ws/files/126704919/bgd_12_4627_2015.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ocean acidification |
genre_facet |
Greenland Ocean acidification |
op_source |
Pančić , M , Hansen , P J , Tammilehto , A & Lundholm , N 2015 , ' Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus ' , Biogeosciences Discussions , vol. 12 , no. 6 , pp. 4627-4654 . https://doi.org/10.5194/bgd-12-4627-2015 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bgd-12-4627-2015 |
_version_ |
1766019955974733824 |