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In-situ behavioural and physiological responses of Antarctic microphytobenthos to ocean acidification

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Black, JG ORCID: 0000-0001-8361-2640, Stark, JS, Johnstone, GJ, McMinn, A ORCID: 0000-0002-2133-3854, Boyd, P ORCID: 0000-0001-7850-1911, McKinlay, J, Wotherspoon, S ORCID: 0000-0002-6947-4445 and Runcie, JW 2019 , 'In-situ behavioural and physiological responses of Antarctic microphytobenthos to ocean acidification' , Scientific Reports, vol. 9 , pp. 1-13 , doi: 10.1038/s41598-018-36233-2.

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Abstract

Ocean acidification (OA) is predicted to alter benthic marine community structure and function, however, there is a paucity of field experiments in benthic soft sediment communities and ecosystems. Benthic diatoms are important components of Antarctic coastal ecosystems, however very little is known of how they will respond to ocean acidification. Ocean acidification conditions were maintained by incremental computer controlled addition of high fCO2 seawater representing OA conditions predicted for the year 2100. Respiration chambers and PAM fluorescence techniques were used to investigate acute behavioural, photosynthetic and net production responses of benthic microalgae communities to OA in in-situ field experiments. We demonstrate how OA can modify behavioural ecology, which changes photo-physiology and net production of benthic microalgae. Ocean acidification treatments significantly altered behavioural ecology, which in turn altered photo-physiology. The ecological trends presented here have the potential to manifest into significant ecological change over longer time periods.

Item Type: Article
Authors/Creators:Black, JG and Stark, JS and Johnstone, GJ and McMinn, A and Boyd, P and McKinlay, J and Wotherspoon, S and Runcie, JW
Keywords: ocean acidification, diatom, Antarctic, microphytobenthos
Journal or Publication Title: Scientific Reports
Publisher: Nature Publishing Group
ISSN: 2045-2322
DOI / ID Number: 10.1038/s41598-018-36233-2
Copyright Information:

© The Author(s) 2019 This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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