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Structural shifts in sea ice prokaryotic communities across a salinity gradient in the subarctic

2022Journal article Restricted access
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dc.contributor.authorCoelho, Lígia Fonseca
dc.contributor.authorCouceiro, Joana Fernandes
dc.contributor.authorKeller-Costa, Tina
dc.contributor.authorValente, Sara Martinez
dc.contributor.authorRamalho, Tiago Pereirinha
dc.contributor.authorCarneiro, Joana
dc.contributor.authorComte, Jérôme
dc.contributor.authorBlais, Marie-Amélie
dc.contributor.authorVincent, Warwick F.
dc.contributor.authorMartins, Zita
dc.contributor.authorCanário, João
dc.contributor.authorCosta, Rodrigo
dc.date.accessioned2022-12-06T10:43:37Z
dc.date.available2022-12-06T10:43:37Z
dc.date.issued2022
dc.description.abstractCurrent knowledge of the processes that shape prokaryotic community assembly in sea ice across polar ecosystems is scarce. Here, we coupled culture-dependent (bacterial isolation on R2A medium) and culture-independent (high throughput 16S rRNA gene sequencing) approaches to provide the first comprehensive assessment of prokaryotic communities in the late winter ice and its underlying water along a natural salinity gradient in coastal Hudson Bay, an iconic cryo-environment that marks the ecological transition between Canadian Subarctic and Arctic biomes. We found that prokaryotic community assembly processes in the ice were less selective at low salinity since typical freshwater taxa such as Frankiales, Burkholderiales, and Chitinophagales dominated both the ice and its underlying water. In contrast, there were sharp shifts in community structure between the ice and underlying water samples at sites with higher salinity, with the orders Alteromonadales and Flavobacteriales dominating the ice, while the abovementioned freshwater taxa dominated the underlying water communities. Moreover, primary producers including Cyanobium (Cyanobacteria, Synechococcales) may play a role in shaping the ice communities and were accompanied by known Planctomycetes and Verrucomicrobiae taxa. Culture-dependent analyses showed that the ice contained pigment producing psychrotolerant or psychrophilic bacteria from the phyla Proteobacteria, Actinobacteriota, and Bacteroidota, likely favored by the combination of low temperatures and the seasonal increase in sunlight. Our findings suggest that salinity, photosynthesis and dissolved organic matter are the main drivers of prokaryotic community structure in the late winter ice of coastal Hudson Bay, the ecosystem with the fastest sea ice loss rate in the Canadian North.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.scitotenv.2022.154286pt_PT
dc.identifier.issn0048-9697
dc.identifier.urihttp://hdl.handle.net/10400.1/18581
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationInstitute for Bioengineering and Biosciences
dc.relationInstitute for Bioengineering and Biosciences
dc.relationInstitute for Health and Bioeconomy
dc.subjectCryospherept_PT
dc.subjectEstuarypt_PT
dc.subjectHudson Baypt_PT
dc.subjectMicrobial diversitypt_PT
dc.subjectPigmentspt_PT
dc.subjectPolar microbiologypt_PT
dc.titleStructural shifts in sea ice prokaryotic communities across a salinity gradient in the subarcticpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleInstitute for Bioengineering and Biosciences
oaire.awardTitleInstitute for Bioengineering and Biosciences
oaire.awardTitleInstitute for Health and Bioeconomy
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04565%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04565%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0140%2F2020/PT
oaire.citation.startPage154286pt_PT
oaire.citation.titleScience of The Total Environmentpt_PT
oaire.citation.volume827pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameda Silva Costa
person.givenNameRodrigo
person.identifier115920
person.identifier.ciencia-id5917-D500-D251
person.identifier.orcid0000-0002-5932-4101
person.identifier.ridN-7274-2013
person.identifier.scopus-author-id7203063627
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
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication4495127c-16f2-4231-9fc1-b471c661036b
relation.isAuthorOfPublication.latestForDiscovery4495127c-16f2-4231-9fc1-b471c661036b
relation.isProjectOfPublication2aa82082-d177-45a7-bcfb-53835259cdf7
relation.isProjectOfPublicationb77fb4c4-29d2-40d6-a038-861ad88968d7
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