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dc.contributor.authorGuamán-Guevara, Fabricio
dc.contributor.authorAustin, Heather
dc.contributor.authorHicks, Natalie
dc.contributor.authorStreeter, Richard
dc.contributor.authorAustin, William E. N.
dc.identifier.citationGuamán-Guevara , F , Austin , H , Hicks , N , Streeter , R & Austin , W E N 2019 , ' Impacts of ocean acidification on intertidal benthic foraminiferal growth and calcification ' , PLoS ONE , vol. 14 , no. 8 , e0220046 .
dc.identifier.otherPURE: 260748055
dc.identifier.otherPURE UUID: e420a2e3-7d4d-4055-b135-fac5d0d7ad5a
dc.identifier.otherRIS: urn:D134A824A2C743FED86EC9F7DFC5B1BD
dc.identifier.otherScopus: 85071001310
dc.identifier.otherORCID: /0000-0003-2261-4540/work/64697925
dc.identifier.otherWOS: 000485033100008
dc.descriptionFunding: This work is a contribution to FGG’s PhD study programme at the University of St Andrews, UK, and is funded by Secretaría de Educación Superior, Ciencia, Tecnología e Innovación de la República del Ecuador (SENESCYT).en
dc.description.abstractForaminifera are expected to be particularly susceptible to future changes in ocean carbonate chemistry as a function of increased atmospheric CO2. Studies in an experimental recirculating seawater system were performed with a dominant benthic foraminiferal species collected from intertidal mudflats. We investigated the experimental impacts of ocean acidification on survival, growth/calcification, morphology and the biometric features of a calcareous species Elphidium williamsoni. Foraminifera were exposed for 6 weeks to four different pH treatments that replicated future scenarios of a high CO2 atmosphere resulting in lower seawater pH. Results revealed that declining seawater pH caused a decline in foraminiferal survival rate and growth/calcification (mainly through test weight reduction). Scanning electron microscopy image analysis of live specimens at the end of the experimental period show changes in foraminiferal morphology with clear signs of corrosion and cracking on the test surface, septal bridges, sutures and feeding structures of specimens exposed to the lowest pH conditions. These findings suggest that the morphological changes observed in shell feeding structures may serve to alter: (1) foraminiferal feeding efficiency and their long-term ecological competitiveness, (2) the energy transferred within the benthic food web with a subsequent shift in benthic community structures and (3) carbon cycling and total CaCO3 production, both highly significant processes in coastal waters. These experimental results open-up the possibility of modelling future impacts of ocean acidification on both calcification and dissolution in benthic foraminifera within mid-latitude intertidal environments, with potential implications for understanding the changing marine carbon cycle.
dc.relation.ispartofPLoS ONEen
dc.rightsCopyright: © 2019 Guamán-Guevara et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en
dc.subjectG Geography (General)en
dc.subjectGC Oceanographyen
dc.subjectSDG 14 - Life Below Wateren
dc.titleImpacts of ocean acidification on intertidal benthic foraminiferal growth and calcificationen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Geography & Sustainable Developmenten
dc.contributor.institutionUniversity of St Andrews. Bell-Edwards Geographic Data Instituteen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. St Andrews Sustainability Instituteen
dc.contributor.institutionUniversity of St Andrews. Coastal Resources Management Groupen
dc.contributor.institutionUniversity of St Andrews. Marine Alliance for Science & Technology Scotlanden
dc.description.statusPeer revieweden

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