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Functional and ecophysiological traits of Halimione portulacoides and Sarcocornia perennis ecotypes in Mediterranean salt marshes under different tidal exposures

2018Journal article Restricted access
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dc.contributor.authorDuarte, Bernardo
dc.contributor.authorSilva, Helena
dc.contributor.authorDias, João Miguel
dc.contributor.authorSleimi, Noomene
dc.contributor.authorMarques, J. C.
dc.contributor.authorCaçador, Isabel
dc.date.accessioned2019-06-25T09:52:04Z
dc.date.available2019-06-25T09:52:04Z
dc.date.issued2018
dc.description.abstractThe present paper aims to discuss the functional and ecophysiological traits of two abundant succulent halophytes in Mediterranean salt marsh systems, considering two ecotypes differing on their tidal exposure. In Halimione portulacoides the higher root/shoot (R/S) biomass ratio verified in low inundation frequency (LF) marshes, as compared with that in high inundation frequency (HF), indicates an optimal partitioning strategy, inducing differential allocation patterns along with varying environmental factors. Conversely, Sarcocornia perennis appear to have an isometric allocation strategy, based on intrinsic biomass allocation mechanisms independent from the surrounding environmental conditions. Similarly, the photosynthetic traits appear to reflect the intrinsic ecology of the species. Sarcocornia perennis habitat adaptation to HF conditions is clearly revealed by its high photosynthetic efficiency under HF conditions. On the other hand, the cosmopolitan H. portulacoides shows no differences between ecotypes, in which concerns this trait, mostly due to the high carotenoid content of the HF ecotype, which allows this specie to counteract the stress generated during submersion. Additionally, anti-oxidant enzymatic activities revealed that S. perennis presents a high degree of stress tolerance under HF conditions, while H. portulacoides is highly adapted to LF conditions. These functional (biomass-related) and physiological traits determine the optimal habitats for H. portulacoides and S. perennis. While H. portulacoides optimal biomass partitioning, along with its efficient anti-oxidant defence system, makes this species fitter to LF conditions, S. perennis isometric allocation strategy, along with a higher photosynthetic efficiency under frequent flooding conditions, provides this species the mechanisms to efficiently colonize the intertidal habitat.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1007/s11284-018-1632-ypt_PT
dc.identifier.issn0912-3814
dc.identifier.urihttp://hdl.handle.net/10451/38804
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectBiomass allocationpt_PT
dc.subjectPhotobiologypt_PT
dc.subjectOxidative stresspt_PT
dc.subjectAdaptationpt_PT
dc.subjectSalt marshpt_PT
dc.titleFunctional and ecophysiological traits of Halimione portulacoides and Sarcocornia perennis ecotypes in Mediterranean salt marshes under different tidal exposurespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1156pt_PT
oaire.citation.issue6pt_PT
oaire.citation.startPage1145pt_PT
oaire.citation.titleEcological Researchpt_PT
oaire.citation.volume33pt_PT
person.familyNameDuarte
person.familyNameMARQUES
person.familyNameCaçador
person.givenNameBernardo
person.givenNameJOÃO CARLOS
person.givenNameIsabel
person.identifier89449
person.identifier134821
person.identifier.ciencia-id731E-093F-D4C8
person.identifier.ciencia-id9F11-7A1E-BEEC
person.identifier.ciencia-id631C-9FFE-CA81
person.identifier.orcid0000-0003-1914-7435
person.identifier.orcid0000-0001-8865-8189
person.identifier.orcid0000-0002-4475-6091
person.identifier.ridH-2001-2011
person.identifier.ridL-9478-2014
person.identifier.ridC-2618-2012
person.identifier.scopus-author-id20734149900
person.identifier.scopus-author-id7203032961
person.identifier.scopus-author-id6602533871
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationa72f0f40-c224-49ad-ba21-ebb5f9aab09c
relation.isAuthorOfPublication97130a55-0383-4d1b-8d73-4a5ca889e529
relation.isAuthorOfPublication02ecb390-88b9-4e2f-8690-eba66c3b5311
relation.isAuthorOfPublication.latestForDiscovery97130a55-0383-4d1b-8d73-4a5ca889e529

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