Repository logo
 
Publication

Thallus structural alterations in green-algal lichens as indicators of elevated CO₂ in a degassing volcanic area

2020-03Journal article Restricted access
Simple item page
dc.contributor.authorBernardo, Filipe Miguel
dc.contributor.authorRocha, Tânia
dc.contributor.authorBranquinho, Cristina
dc.contributor.authorGarcia, Patrícia
dc.contributor.authorRodrigues, Armindo
dc.date.accessioned2021-03-17T16:25:53Z
dc.date.available2021-03-17T16:25:53Z
dc.date.issued2020-03
dc.description.abstractWe hypothesize that the thalli of the green-algal, CO₂-sensitive lichen Usnea rubicunda (Stirton) undergo significant structural alterations as a biological response indicating increased CO₂ emissions. To test that, U. rubicunda thalli were transplanted from a reference site with no volcanism into 36 sites distributed within the volcanically active Furnas caldera, encompassing the gradient of soil diffuse CO₂ degassing areas (700 t d⁻¹ of hydrothermal CO₂). After 6 months of exposure in similar macroclimatic conditions, both Furnas transplants and samples kept at the reference site were retrieved for histology to assess thalli structure and the proportion between the symbionts. On average, cross-sections of Furnas thalli were significantly thicker than reference, owing mostly to the fungal layers of medulla and central cord. The latter occupied a significantly greater than reference relative volumetric density despite a smaller than reference relative percentage of algal occupation on Furnas thalli. These results reveal a positive and time-integrated response of U. rubicunda to the greater availability of CO₂ from hydrothermal emissions in the volcanic environment, translated in greater efficiency of the algae in sustaining the fungal biomass. Histomorphometric structural alterations in the heteromerous thalli of U. rubicunda are suitable response biomarkers with potential to indicate a global rise of CO₂ levels in natural environments.en
dc.description.sponsorshipFundo Regional para a Ciência e Tecnologia (FRCT); ACORES 2020 (Programa Operacional FEDER FSE) do Governo dos Acores (M3.1.a/F/088/2015)en
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBernardo, F., Rocha, T., Branquinho, C., Garcia, P. & Rodrigues, A. (2020). Thallus structural alterations in green-algal lichens as indicators of elevated CO₂ in a degassing volcanic area. “Ecological Indicators”, 114, 1-7. DOI: 10.1016/j.ecolind.2020.106326en
dc.identifier.doi10.1016/j.ecolind.2020.106326pt_PT
dc.identifier.issn1470-160X
dc.identifier.urihttp://hdl.handle.net/10400.3/5797
dc.identifier.urihttp://hdl.handle.net/10451/45307
dc.identifier.wos000562957500009
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S1470160X20302636pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectUsnea rubicundapt_PT
dc.subjectVolcanismen
dc.subjectHydrothermal Emissionsen
dc.subjectCarbon Dioxideen
dc.subjectHistologyen
dc.subjectBiomarkersen
dc.titleThallus structural alterations in green-algal lichens as indicators of elevated CO₂ in a degassing volcanic areaen
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceNetherlandsen
oaire.citation.endPage7pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleEcological Indicatorsen
oaire.citation.volume114pt_PT
person.familyNameGarcia
person.familyNamedos Santos Rodrigues
person.givenNamePatrícia
person.givenNameArmindo
person.identifier.ciencia-id941F-888A-412F
person.identifier.ciencia-id141A-9835-FBE0
person.identifier.orcid0000-0003-4490-9905
person.identifier.orcid0000-0002-9851-5429
person.identifier.ridM-7754-2013
person.identifier.scopus-author-id7201694062
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication94864ead-4016-4db1-b56e-136d294db238
relation.isAuthorOfPublication375991d8-6f81-4403-902c-000634a4cfdd
relation.isAuthorOfPublication.latestForDiscovery375991d8-6f81-4403-902c-000634a4cfdd

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
P1584_Bernardo_2020_EcologicalIndicators.pdf
Size:
1.7 MB
Format:
Adobe Portable Document Format
Download

Collections

GBA - Artigos em Revistas Internacionais / Articles in International Journals
DBIO - Artigos em Revistas Internacionais / Articles in International Journals