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Withstanding the heat: resilience of free-living coralline algae to marine heatwaves

2025-11Journal article Open access
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dc.contributor.authorNannini, Matteo
dc.contributor.authorCerpelloni, Martina
dc.contributor.authorGaspar, Tainá L.
dc.contributor.authorPeña, Viviana
dc.contributor.authorTuya, Fernando
dc.contributor.authorPeñas, Julio
dc.contributor.authorRio, Jesús del
dc.contributor.authorVieira Mourato, Carolina
dc.contributor.authorSilva, João
dc.contributor.authorSantos, Rui
dc.contributor.authorRagazzola, Federica
dc.contributor.authorOlivé, Irene
dc.contributor.authorSchubert, Nadine
dc.date.accessioned2025-10-27T13:36:07Z
dc.date.available2025-10-27T13:36:07Z
dc.date.issued2025-11
dc.description.abstractMarine heatwaves (MHWs) can severely impact benthic ecosystems, driving major ecological shifts. As they become longer, more frequent, and intense, MHWs are emerging as a dominant threat to marine biodiversity. Yet, their potential effects on coralline algal beds (CABs, including rhodolith beds), habitats of critical ecological importance, remain largely unknown. This study investigated the physiological responses of three rhodolith species (Lithothamnion cf. valens, Lithothamnion sp., Lithophyllum incrustans), which dominate the community of a Mediterranean CAB, to an experimentally simulated ecologically relevant scenario of two consecutive summer MHWs. Species responses in key physiological processes, photosynthesis, respiration, and calcification, were assessed before, during, and after the heatwave events. Overall, temperature increases had minor effects on photosynthesis and respiration, while calcification responses to MHWs were more pronounced and speciesspecific. Significant declines were observed in light calcification of L. incrustans during the first MHW, and in dark calcification of all three species, with L. incrustans and L. cf. valens responding during the first and second MHWs, respectively. Lithothamnion sp. exhibited some minor effects on light calcification and a significant shift toward carbonate dissolution in darkness during the first MHW, which reversed over time. Despite these effects, all species fully recovered by the end of the experiment, and the stronger impact of the first MHW suggests a potential priming effect that may enhance tolerance to subsequent heat events. These findings demonstrate rhodoliths’ overall capacity to withstand MHWs, while highlighting the role of species-specific responses in shaping the net carbonate balance of CABs under future climate scenarios.eng
dc.description.sponsorshipCIND/CP1597/CT0003; EMBRC.PT ALG01-0145-FEDER-022121, Process No. 200369/2023-7
dc.identifier.doi10.1016/j.marenvres.2025.107538
dc.identifier.issn0141-1136
dc.identifier.urihttp://hdl.handle.net/10400.1/27852
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationAlgarve Centre for Marine Sciences
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relationPresent-day and future net carbon source-sink dynamics of rhodolith beds: Implications for climate change mitigation
dc.relation.ispartofMarine Environmental Research
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectCalcification
dc.subjectCoralline algal bed
dc.subjectExtreme events
dc.subjectMediterranean sea
dc.subjectPhotosynthesis
dc.subjectThermal resilience
dc.subjectRhodoliths
dc.subjectTemperature
dc.titleWithstanding the heat: resilience of free-living coralline algae to marine heatwaveseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardTitlePresent-day and future net carbon source-sink dynamics of rhodolith beds: Implications for climate change mitigation
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 3ed/2020.01282.CEECIND%2FCP1597%2FCT0003/PT
oaire.citation.startPage107538
oaire.citation.titleMarine Environmental Research
oaire.citation.volume212
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamCEEC IND 3ed
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameVieira Mourato
person.familyNameSilva
person.familyNameSantos
person.familyNameSchubert
person.givenNameCarolina
person.givenNameJoão
person.givenNameRui
person.givenNameNadine
person.identifier82814
person.identifier42560
person.identifierC-6179-2009
person.identifier.ciencia-id8216-527E-1BD4
person.identifier.ciencia-id9B18-444D-2244
person.identifier.ciencia-id681C-F6E1-C2FD
person.identifier.orcid0000-0002-6831-5792
person.identifier.orcid0000-0002-7211-1661
person.identifier.orcid0000-0002-7861-4366
person.identifier.orcid0000-0001-7161-7882
person.identifier.ridJ-7874-2013
person.identifier.ridB-4168-2008
person.identifier.scopus-author-id7403023547
person.identifier.scopus-author-id7201375018
person.identifier.scopus-author-id15623791900
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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