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The importance of local settings: within-year variability in seawater temperature at South Bay, Western Antarctic Peninsula

The Western Antarctic Peninsula (WAP) has undergone significant changes in air and seawater temperatures during the last 50 years. Although highly stenotherm Antarctic organisms are expected to be severely affected by the increase of seawater temperature, high-resolution datasets of seawater tempera...

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Autores principales: Cárdenas, César A., González-Aravena, Marcelo, Santibañez, Pamela A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5776021/
https://www.ncbi.nlm.nih.gov/pubmed/29372123
http://dx.doi.org/10.7717/peerj.4289
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author Cárdenas, César A.
González-Aravena, Marcelo
Santibañez, Pamela A.
author_facet Cárdenas, César A.
González-Aravena, Marcelo
Santibañez, Pamela A.
author_sort Cárdenas, César A.
collection PubMed
description The Western Antarctic Peninsula (WAP) has undergone significant changes in air and seawater temperatures during the last 50 years. Although highly stenotherm Antarctic organisms are expected to be severely affected by the increase of seawater temperature, high-resolution datasets of seawater temperature within coastal areas of the WAP (where diverse marine communities have been reported) are not commonly available. Here we report on within-year (2016–2017) variation in seawater temperature at three sites on Doumer Island, Palmer Archipelago, WAP. Within a year, Antarctic organisms in South Bay were exposed to water temperatures in excess of 2 °C for more than 25 days and 2.5 °C for more than 10 days. We recorded a temperature range between −1.7° to 3.0 °C. Warming of seawater temperature was 3.75 times faster after October 2016 than it was before October. Results from this study indicate that organisms at South Bay are already exposed to temperatures that are being used in experimental studies to evaluate physiological responses to thermal stress in WAP organisms. Continuous measurements of short to long-term variability in seawater temperature provides important information for parametrizing meaningful experimental treatments that aim to assess the local effects of environmental variation on Antarctic organisms under future climate scenarios.
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spelling pubmed-57760212018-01-25 The importance of local settings: within-year variability in seawater temperature at South Bay, Western Antarctic Peninsula Cárdenas, César A. González-Aravena, Marcelo Santibañez, Pamela A. PeerJ Biodiversity The Western Antarctic Peninsula (WAP) has undergone significant changes in air and seawater temperatures during the last 50 years. Although highly stenotherm Antarctic organisms are expected to be severely affected by the increase of seawater temperature, high-resolution datasets of seawater temperature within coastal areas of the WAP (where diverse marine communities have been reported) are not commonly available. Here we report on within-year (2016–2017) variation in seawater temperature at three sites on Doumer Island, Palmer Archipelago, WAP. Within a year, Antarctic organisms in South Bay were exposed to water temperatures in excess of 2 °C for more than 25 days and 2.5 °C for more than 10 days. We recorded a temperature range between −1.7° to 3.0 °C. Warming of seawater temperature was 3.75 times faster after October 2016 than it was before October. Results from this study indicate that organisms at South Bay are already exposed to temperatures that are being used in experimental studies to evaluate physiological responses to thermal stress in WAP organisms. Continuous measurements of short to long-term variability in seawater temperature provides important information for parametrizing meaningful experimental treatments that aim to assess the local effects of environmental variation on Antarctic organisms under future climate scenarios. PeerJ Inc. 2018-01-18 /pmc/articles/PMC5776021/ /pubmed/29372123 http://dx.doi.org/10.7717/peerj.4289 Text en ©2018 Cárdenas et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Biodiversity
Cárdenas, César A.
González-Aravena, Marcelo
Santibañez, Pamela A.
The importance of local settings: within-year variability in seawater temperature at South Bay, Western Antarctic Peninsula
title The importance of local settings: within-year variability in seawater temperature at South Bay, Western Antarctic Peninsula
title_full The importance of local settings: within-year variability in seawater temperature at South Bay, Western Antarctic Peninsula
title_fullStr The importance of local settings: within-year variability in seawater temperature at South Bay, Western Antarctic Peninsula
title_full_unstemmed The importance of local settings: within-year variability in seawater temperature at South Bay, Western Antarctic Peninsula
title_short The importance of local settings: within-year variability in seawater temperature at South Bay, Western Antarctic Peninsula
title_sort importance of local settings: within-year variability in seawater temperature at south bay, western antarctic peninsula
topic Biodiversity
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5776021/
https://www.ncbi.nlm.nih.gov/pubmed/29372123
http://dx.doi.org/10.7717/peerj.4289
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