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Cork oak and climate change: influence of drought on cork growth and chemical composition

2020Tese de doutoramento Acesso aberto
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dc.contributor.advisorPereira, Helena
dc.contributor.advisorMiranda, Isabel Maria Sanches
dc.contributor.advisorOliveira, Vanda Cristina Tavares
dc.contributor.authorLeite, Carla do Nascimento Santos
dc.date.accessioned2021-04-06T10:47:11Z
dc.date.available2021-04-06T10:47:11Z
dc.date.issued2020
dc.descriptionDoutoramento em Engenharia Florestal e dos Recursos Naturais / Instituto Superior de Agronomia. Universidade de Lisboapt_PT
dc.description.abstractClimate scenarios in the Mediterranean predict raising temperatures and more frequent and extreme drought. We focused on analysing the effect of drought on cork growth and chemical composition to evaluate if more frequent and severe forthcoming droughts will compromise the performance of cork as a sealant for wine bottles. A few species can produce cork in a significant proportion. We initiated this research on gathering the available information to put cork oak and its cork under this general panorama. We concluded that the cork from Quercus suber is presently the only raw-material with the characteristics necessary for production of solid cork products and focused our research on it. To study the response of cork-growth to drought and the effect of phellogen age we used a dendroecological methodology and a components resilience analysis, confirming that drought reduces growth and provided extra knowledge on this subject: cork oak is very tolerant and resilient to extreme droughts but more severe droughts correspond to higher decrease of growth and more trees affected although to greater recovery performance. Nevertheless, there are other factors involved in the response: site, tree and the age of the phellogen. Regarding chemical composition the research developed brings insights into the effect of drought on the proportion of its main components. Our results show that, in general, drought does not affect it, with some exceptions. Nevertheless, the variability associated to the tree is much more relevant than the effect of drought conditions and affects all the parameters analyzed. In practical terms, the potential increased occurrence of droughts arising from climatic changes will not compromise the performance of cork as a sealant for wine bottles but cork debarking rotations should be enlarged in order to have the necessary cork plank width, namely if the drought occurs in the first 2 yearspt_PT
dc.description.versionN/Apt_PT
dc.identifier.citationLeite, C.N.S. - Cork oak and climate change: influence of drought on cork growth and chemical composition. Lisboa: ISA, 2020, 107 p.pt_PT
dc.identifier.tid101645031
dc.identifier.urihttp://hdl.handle.net/10400.5/21211
dc.language.isoengpt_PT
dc.publisherISApt_PT
dc.relationForest Research Centre
dc.relationA designar
dc.subjectQuercus suberpt_PT
dc.subjectcorkpt_PT
dc.subjectdendroecologypt_PT
dc.subjectchemical compositionpt_PT
dc.subjectMediterranean climatept_PT
dc.subjectchange mitigationpt_PT
dc.titleCork oak and climate change: influence of drought on cork growth and chemical compositionpt_PT
dc.typedoctoral thesis
dspace.entity.typePublication
oaire.awardNumberUID/AGR/00239/2019
oaire.awardNumberPD/BD/113937/2015
oaire.awardTitleForest Research Centre
oaire.awardTitleA designar
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FAGR%2F00239%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//PD%2FBD%2F113937%2F2015/PT
oaire.fundingStream6817 - DCRRNI ID
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
rcaap.rightsopenAccesspt_PT
rcaap.typedoctoralThesispt_PT
relation.isProjectOfPublication6a9ac754-44c8-4fda-854c-879148c1ac4e
relation.isProjectOfPublicationa6d28ae6-3090-4f4e-9e60-2e952f1149ba
relation.isProjectOfPublication.latestForDiscovery6a9ac754-44c8-4fda-854c-879148c1ac4e

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