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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Published in:Journal of Experimental Marine Biology and Ecology
Main Authors: Gäbler-Schwarz, S, Hinz, F, Kirst, GO, Uttieri, M, Medlin, Linda K.
Format: Article in Journal/Newspaper
Language:unknown
Published: Elsevier 2021
Subjects:
Online Access:http://plymsea.ac.uk/id/eprint/9579/
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spelling 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
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