Ocean acidification and high irradiance stimulate the photo-physiological fitness, growth and carbon production of the Antarctic cryptophyte Geminigera cryophila
Ecophysiological studies on Antarctic cryptophytes to assess whether climatic changes such as ocean acidification and enhanced stratification affect their growth in Antarctic coastal waters in the future are lacking so far. This is the first study that investigates the combined effects of the increa...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2019
|
Subjects: | |
Online Access: | https://doi.org/10.5194/bg-16-2997-2019 https://doaj.org/article/5022c70f7de1417aa761d791a83a36d5 |
id |
ftdoajarticles:oai:doaj.org/article:5022c70f7de1417aa761d791a83a36d5 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:5022c70f7de1417aa761d791a83a36d5 2023-05-15T13:57:01+02:00 Ocean acidification and high irradiance stimulate the photo-physiological fitness, growth and carbon production of the Antarctic cryptophyte Geminigera cryophila S. Trimborn S. Thoms P. Karitter K. Bischof 2019-08-01T00:00:00Z https://doi.org/10.5194/bg-16-2997-2019 https://doaj.org/article/5022c70f7de1417aa761d791a83a36d5 EN eng Copernicus Publications https://www.biogeosciences.net/16/2997/2019/bg-16-2997-2019.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-16-2997-2019 1726-4170 1726-4189 https://doaj.org/article/5022c70f7de1417aa761d791a83a36d5 Biogeosciences, Vol 16, Pp 2997-3008 (2019) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.5194/bg-16-2997-2019 2022-12-31T05:29:16Z Ecophysiological studies on Antarctic cryptophytes to assess whether climatic changes such as ocean acidification and enhanced stratification affect their growth in Antarctic coastal waters in the future are lacking so far. This is the first study that investigates the combined effects of the increasing availability of p CO 2 (400 and 1000 µ atm) and irradiance (20, 200 and 500 µ mol photons m −2 s −1 ) on growth, elemental composition and photophysiology of the Antarctic cryptophyte Geminigera cryophila . Under ambient p CO 2 , this species was characterized by a pronounced sensitivity to increasing irradiance with complete growth inhibition at the highest light intensity. Interestingly, when grown under high p CO 2 this negative light effect vanished, and it reached the highest rates of growth and particulate organic carbon production at the highest irradiance compared to the other tested experimental conditions. Our results for G. cryophila reveal beneficial effects of ocean acidification in conjunction with enhanced irradiance on growth and photosynthesis. Hence, cryptophytes such as G. cryophila may be potential winners of climate change, potentially thriving better in more stratified and acidic coastal waters and contributing in higher abundance to future phytoplankton assemblages of coastal Antarctic waters. Article in Journal/Newspaper Antarc* Antarctic Ocean acidification Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Biogeosciences 16 15 2997 3008 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 S. Trimborn S. Thoms P. Karitter K. Bischof Ocean acidification and high irradiance stimulate the photo-physiological fitness, growth and carbon production of the Antarctic cryptophyte Geminigera cryophila |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Ecophysiological studies on Antarctic cryptophytes to assess whether climatic changes such as ocean acidification and enhanced stratification affect their growth in Antarctic coastal waters in the future are lacking so far. This is the first study that investigates the combined effects of the increasing availability of p CO 2 (400 and 1000 µ atm) and irradiance (20, 200 and 500 µ mol photons m −2 s −1 ) on growth, elemental composition and photophysiology of the Antarctic cryptophyte Geminigera cryophila . Under ambient p CO 2 , this species was characterized by a pronounced sensitivity to increasing irradiance with complete growth inhibition at the highest light intensity. Interestingly, when grown under high p CO 2 this negative light effect vanished, and it reached the highest rates of growth and particulate organic carbon production at the highest irradiance compared to the other tested experimental conditions. Our results for G. cryophila reveal beneficial effects of ocean acidification in conjunction with enhanced irradiance on growth and photosynthesis. Hence, cryptophytes such as G. cryophila may be potential winners of climate change, potentially thriving better in more stratified and acidic coastal waters and contributing in higher abundance to future phytoplankton assemblages of coastal Antarctic waters. |
format |
Article in Journal/Newspaper |
author |
S. Trimborn S. Thoms P. Karitter K. Bischof |
author_facet |
S. Trimborn S. Thoms P. Karitter K. Bischof |
author_sort |
S. Trimborn |
title |
Ocean acidification and high irradiance stimulate the photo-physiological fitness, growth and carbon production of the Antarctic cryptophyte Geminigera cryophila |
title_short |
Ocean acidification and high irradiance stimulate the photo-physiological fitness, growth and carbon production of the Antarctic cryptophyte Geminigera cryophila |
title_full |
Ocean acidification and high irradiance stimulate the photo-physiological fitness, growth and carbon production of the Antarctic cryptophyte Geminigera cryophila |
title_fullStr |
Ocean acidification and high irradiance stimulate the photo-physiological fitness, growth and carbon production of the Antarctic cryptophyte Geminigera cryophila |
title_full_unstemmed |
Ocean acidification and high irradiance stimulate the photo-physiological fitness, growth and carbon production of the Antarctic cryptophyte Geminigera cryophila |
title_sort |
ocean acidification and high irradiance stimulate the photo-physiological fitness, growth and carbon production of the antarctic cryptophyte geminigera cryophila |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/bg-16-2997-2019 https://doaj.org/article/5022c70f7de1417aa761d791a83a36d5 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ocean acidification |
genre_facet |
Antarc* Antarctic Ocean acidification |
op_source |
Biogeosciences, Vol 16, Pp 2997-3008 (2019) |
op_relation |
https://www.biogeosciences.net/16/2997/2019/bg-16-2997-2019.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-16-2997-2019 1726-4170 1726-4189 https://doaj.org/article/5022c70f7de1417aa761d791a83a36d5 |
op_doi |
https://doi.org/10.5194/bg-16-2997-2019 |
container_title |
Biogeosciences |
container_volume |
16 |
container_issue |
15 |
container_start_page |
2997 |
op_container_end_page |
3008 |
_version_ |
1766264627539214336 |