Local environment shapes adaptation of Phaeocystis antarctica to salinity perturbations: Evidence for physiological resilience
The Southern Ocean (SO) is a fragile ecosystem as judged by changes in the timing of the advance and retreat of its ice cover. In the SO, the Antarctic Circumpolar Current (ACC) and the near shore gyres (Weddell Sea and Ross Sea) provide local environments with distinct temperature and salinity attr...
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ftplymouthml:oai:plymsea.ac.uk:9579 2023-05-15T13:57:48+02:00 Local environment shapes adaptation of Phaeocystis antarctica to salinity perturbations: Evidence for physiological resilience Gäbler-Schwarz, S Hinz, F Kirst, GO Uttieri, M Medlin, Linda K. 2021-05 http://plymsea.ac.uk/id/eprint/9579/ unknown Elsevier Gäbler-Schwarz, S; Hinz, F; Kirst, GO; Uttieri, M; Medlin, Linda K. 2021 Local environment shapes adaptation of Phaeocystis antarctica to salinity perturbations: Evidence for physiological resilience. Journal of Experimental Marine Biology and Ecology, 538, 151527. https://doi.org/10.1016/j.jembe.2021.151527 <https://doi.org/10.1016/j.jembe.2021.151527> Biology Ecology and Environment Marine Sciences Publication - Article PeerReviewed 2021 ftplymouthml https://doi.org/10.1016/j.jembe.2021.151527 2022-09-13T05:50:02Z The Southern Ocean (SO) is a fragile ecosystem as judged by changes in the timing of the advance and retreat of its ice cover. In the SO, the Antarctic Circumpolar Current (ACC) and the near shore gyres (Weddell Sea and Ross Sea) provide local environments with distinct temperature and salinity attributes associated with varying sea ice history. Phaeocystis antarctica is a prymnesiophyte often dominating polar phytoplankton blooms in the (SO) and is a keystone species there because its abundance can have negative effects on higher trophic levels and it can influence air/sea gas exchange involved in DMSP production, Thus, its ability to survive in response to perturbations in the environments may be linked to its genetic diversity within its populations as they move around the SO. Here we apply increased (70 PSU) and decreased (18 PSU) salinity treatments to five genetically different P. antarctica strains isolated from three different water masses to test whether genetic similarity or water mass physical features were more important in determining responses to salinity changes, such as those encountered by inclusion into sea ice brine channels and/or its subsequent melt water in those water masses that have annual ice cover. Strains that were geographically close (isolated from the same water mass), but genetically distinct (ca. 30% similar and from different gene pools as judged by microsatellite (MS) and amplified fragment linked polymorphisms (AFLP) analyses responded similarly to higher and lower salinity regimes, whereas genetically close strains (ca. 95% identical or from the same gene pool) that originated from different water masses and hence different environmental conditions responded differently. Dimethylsulphoniopropionate (DMSP) production in response to these salinity changes were not significantly different between any of the strains/treatments. Considering the presence of highly similar genotypes in ice-free as well as seasonally ice covered sampling sites, the observed phenotypic differences ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Sea ice Southern Ocean Weddell Sea Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) Antarctic Southern Ocean The Antarctic Weddell Sea Ross Sea Weddell Journal of Experimental Marine Biology and Ecology 538 151527 |
institution |
Open Polar |
collection |
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) |
op_collection_id |
ftplymouthml |
language |
unknown |
topic |
Biology Ecology and Environment Marine Sciences |
spellingShingle |
Biology Ecology and Environment Marine Sciences Gäbler-Schwarz, S Hinz, F Kirst, GO Uttieri, M Medlin, Linda K. Local environment shapes adaptation of Phaeocystis antarctica to salinity perturbations: Evidence for physiological resilience |
topic_facet |
Biology Ecology and Environment Marine Sciences |
description |
The Southern Ocean (SO) is a fragile ecosystem as judged by changes in the timing of the advance and retreat of its ice cover. In the SO, the Antarctic Circumpolar Current (ACC) and the near shore gyres (Weddell Sea and Ross Sea) provide local environments with distinct temperature and salinity attributes associated with varying sea ice history. Phaeocystis antarctica is a prymnesiophyte often dominating polar phytoplankton blooms in the (SO) and is a keystone species there because its abundance can have negative effects on higher trophic levels and it can influence air/sea gas exchange involved in DMSP production, Thus, its ability to survive in response to perturbations in the environments may be linked to its genetic diversity within its populations as they move around the SO. Here we apply increased (70 PSU) and decreased (18 PSU) salinity treatments to five genetically different P. antarctica strains isolated from three different water masses to test whether genetic similarity or water mass physical features were more important in determining responses to salinity changes, such as those encountered by inclusion into sea ice brine channels and/or its subsequent melt water in those water masses that have annual ice cover. Strains that were geographically close (isolated from the same water mass), but genetically distinct (ca. 30% similar and from different gene pools as judged by microsatellite (MS) and amplified fragment linked polymorphisms (AFLP) analyses responded similarly to higher and lower salinity regimes, whereas genetically close strains (ca. 95% identical or from the same gene pool) that originated from different water masses and hence different environmental conditions responded differently. Dimethylsulphoniopropionate (DMSP) production in response to these salinity changes were not significantly different between any of the strains/treatments. Considering the presence of highly similar genotypes in ice-free as well as seasonally ice covered sampling sites, the observed phenotypic differences ... |
format |
Article in Journal/Newspaper |
author |
Gäbler-Schwarz, S Hinz, F Kirst, GO Uttieri, M Medlin, Linda K. |
author_facet |
Gäbler-Schwarz, S Hinz, F Kirst, GO Uttieri, M Medlin, Linda K. |
author_sort |
Gäbler-Schwarz, S |
title |
Local environment shapes adaptation of Phaeocystis antarctica to salinity perturbations: Evidence for physiological resilience |
title_short |
Local environment shapes adaptation of Phaeocystis antarctica to salinity perturbations: Evidence for physiological resilience |
title_full |
Local environment shapes adaptation of Phaeocystis antarctica to salinity perturbations: Evidence for physiological resilience |
title_fullStr |
Local environment shapes adaptation of Phaeocystis antarctica to salinity perturbations: Evidence for physiological resilience |
title_full_unstemmed |
Local environment shapes adaptation of Phaeocystis antarctica to salinity perturbations: Evidence for physiological resilience |
title_sort |
local environment shapes adaptation of phaeocystis antarctica to salinity perturbations: evidence for physiological resilience |
publisher |
Elsevier |
publishDate |
2021 |
url |
http://plymsea.ac.uk/id/eprint/9579/ |
geographic |
Antarctic Southern Ocean The Antarctic Weddell Sea Ross Sea Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Weddell Sea Ross Sea Weddell |
genre |
Antarc* Antarctic Antarctica Ross Sea Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea Sea ice Southern Ocean Weddell Sea |
op_relation |
Gäbler-Schwarz, S; Hinz, F; Kirst, GO; Uttieri, M; Medlin, Linda K. 2021 Local environment shapes adaptation of Phaeocystis antarctica to salinity perturbations: Evidence for physiological resilience. Journal of Experimental Marine Biology and Ecology, 538, 151527. https://doi.org/10.1016/j.jembe.2021.151527 <https://doi.org/10.1016/j.jembe.2021.151527> |
op_doi |
https://doi.org/10.1016/j.jembe.2021.151527 |
container_title |
Journal of Experimental Marine Biology and Ecology |
container_volume |
538 |
container_start_page |
151527 |
_version_ |
1766265702407208960 |