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dc.contributor.authorKhalil, Munawar
dc.contributor.authorDoo, Steve S.
dc.contributor.authorStuhr, Marleen
dc.contributor.authorWestphal, Hildegard
dc.date.accessioned2022-08-08T08:52:22Z
dc.date.available2022-08-08T08:52:22Z
dc.date.issued2022-08-03
dc.identifier.citationKhalil, M., Doo, S. S., Stuhr, M., & Westphal, H. (2022). Ocean Warming Amplifies the Effects of Ocean Acidification on Skeletal Mineralogy and Microstructure in the Asterinid Starfish Aquilonastra yairi. Journal of Marine Science and Engineering, 10(8), 1065. https://doi.org/10.3390/jmse10081065
dc.identifier.issn2077-1312
dc.identifier.doi10.3390/jmse10081065
dc.identifier.urihttp://hdl.handle.net/10754/680184
dc.description.abstractOcean acidification and ocean warming compromise the capacity of calcifying marine organisms to generate and maintain their skeletons. While many marine calcifying organisms precipitate low-Mg calcite or aragonite, the skeleton of echinoderms consists of more soluble Mg-calcite. To assess the impact of exposure to elevated temperature and increased pCO2 on the skeleton of echinoderms, in particular the mineralogy and microstructure, the starfish Aquilonastra yairi (Echinodermata: Asteroidea) was exposed for 90 days to simulated ocean warming (27 °C and 32 °C) and ocean acidification (455 µatm, 1052 µatm, 2066 µatm) conditions. The results indicate that temperature is the major factor controlling the skeletal Mg (Mg/Ca ratio and Mgnorm ratio), but not for skeletal Sr (Sr/Ca ratio and Srnorm ratio) and skeletal Ca (Canorm ratio) in A. yairi. Nevertheless, inter-individual variability in skeletal Sr and Ca ratios increased with higher temperature. Elevated pCO2 did not induce any statistically significant element alterations of the skeleton in all treatments over the incubation time, but increased pCO2 concentrations might possess an indirect effect on skeletal mineral ratio alteration. The influence of increased pCO2 was more relevant than that of increased temperature on skeletal microstructures. pCO2 as a sole stressor caused alterations on stereom structure and degradation on the skeletal structure of A. yairi, whereas temperature did not; however, skeletons exposed to elevated pCO2 and high temperature show a strongly altered skeleton structure compared to ambient temperature. These results indicate that ocean warming might exacerbate the skeletal maintaining mechanisms of the starfish in a high pCO2 environment and could potentially modify the morphology and functions of the starfish skeleton.
dc.description.sponsorshipThis research project was supported by the Academy Doctoral Research—Grant Leibniz Centre for Tropical Marine Research (ZMT), Germany and the Ministry of Education, Culture, Research, and Technology (MoECRT), Republic of Indonesia—Asian Development Bank (ADB) AKSI Project [grant number L3749-INO] to M.K. We would like to thank Andreas Kunzmann (ZMT, Bremen, Germany) for his advice on the starfish A. yairi as a model organism. Many thanks are due to the ZMT laboratory staff, namely Jule Mawick, Sebastian Flotow, Silvia Hardenberg, José Garcia, Nico Steinel, Matthias Birkicht and Fabian Hüge.
dc.publisherMDPI AG
dc.relation.urlhttps://www.mdpi.com/2077-1312/10/8/1065
dc.rightsArchived with thanks to Journal of Marine Science and Engineering under a Creative Commons license, details at: https://creativecommons.org/licenses/by/4.0/
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleOcean Warming Amplifies the Effects of Ocean Acidification on Skeletal Mineralogy and Microstructure in the Asterinid Starfish Aquilonastra yairi
dc.typeArticle
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentRed Sea Research Center (RSRC)
dc.identifier.journalJournal of Marine Science and Engineering
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionLeibniz Centre for Tropical Marine Research (ZMT), 28359 Bremen, Germany
dc.contributor.institutionFaculty of Geosciences, University of Bremen, 28359 Bremen, Germany
dc.contributor.institutionDepartment of Marine Science, Faculty of Agriculture, Universitas Malikussaleh, Reuleut Main Campus, Aceh 24355, Indonesia
dc.identifier.volume10
dc.identifier.issue8
dc.identifier.pages1065
kaust.personDoo, Steve S.
kaust.personWestphal, Hildegard
refterms.dateFOA2022-08-08T08:53:32Z


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Archived with thanks to Journal of Marine Science and Engineering under a Creative Commons license, details at: https://creativecommons.org/licenses/by/4.0/
Except where otherwise noted, this item's license is described as Archived with thanks to Journal of Marine Science and Engineering under a Creative Commons license, details at: https://creativecommons.org/licenses/by/4.0/