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Seagrass ecophysiological performance under ocean warming and acidification

2017Journal article Restricted access
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dc.contributor.authorRepolho, Tiago
dc.contributor.authorDuarte, Bernardo
dc.contributor.authorDionísio, Gisela
dc.contributor.authorPaula, José Ricardo
dc.contributor.authorLopes, Ana Rita
dc.contributor.authorRosa, Inês
dc.contributor.authorF. Grilo, Tiago
dc.contributor.authorCaçador, Isabel
dc.contributor.authorCalado, Ricardo
dc.contributor.authorRosa, Rui
dc.date.accessioned2019-06-25T09:42:44Z
dc.date.available2019-06-25T09:42:44Z
dc.date.issued2017
dc.description.abstractSeagrasses play an essential ecological role within coastal habitats and their worldwide population decline has been linked to different types of anthropogenic forces. We investigated, for the first time, the combined effects of future ocean warming and acidification on fundamental biological processes of Zostera noltii, including shoot density, leaf coloration, photophysiology (electron transport rate, ETR; maximum PSII quantum yield, Fv/Fm) and photosynthetic pigments. Shoot density was severely affected under warming conditions, with a concomitant increase in the frequency of brownish colored leaves (seagrass die-off). Warming was responsible for a significant decrease in ETR and Fv/Fm (particularly under control pH conditions), while promoting the highest ETR variability (among experimental treatments). Warming also elicited a significant increase in pheophytin and carotenoid levels, alongside an increase in carotenoid/chlorophyll ratio and De-Epoxidation State (DES). Acidification significantly affected photosynthetic pigments content (antheraxanthin, β-carotene, violaxanthin and zeaxanthin), with a significant decrease being recorded under the warming scenario. No significant interaction between ocean acidification and warming was observed. Our findings suggest that future ocean warming will be a foremost determinant stressor influencing Z. noltii survival and physiological performance. Additionally, acidification conditions to occur in the future will be unable to counteract deleterious effects posed by ocean warming.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1038/srep41443pt_PT
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/10451/38782
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relation.publisherversionhttps://www.nature.com/articles/srep41443pt_PT
dc.subjectAcidspt_PT
dc.subjectHydrogen-Ion Concentrationpt_PT
dc.subjectPhotobiologypt_PT
dc.subjectPigmentationpt_PT
dc.subjectPlant Leavespt_PT
dc.subjectPlant Shootspt_PT
dc.subjectZosteraceaept_PT
dc.subjectOceans and Seaspt_PT
dc.titleSeagrass ecophysiological performance under ocean warming and acidificationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue1pt_PT
oaire.citation.startPage41443pt_PT
oaire.citation.titleScientific Reportspt_PT
oaire.citation.volume7pt_PT
person.familyNameRepolho
person.familyNameDuarte
person.familyNameDionísio
person.familyNamePaula
person.familyNameLopes
person.familyNameRosa
person.familyNameF. Grilo
person.familyNameCaçador
person.familyNameRosa
person.givenNameTiago
person.givenNameBernardo
person.givenNameGisela
person.givenNameJosé Ricardo
person.givenNameAna Rita
person.givenNameInês
person.givenNameTiago
person.givenNameIsabel
person.givenNameRui
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rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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