Repository logo
 
Publication

Rising atmospheric CO2 concentrations: the overlooked factor promoting SW Iberian Forest development across the LGM and the last deglaciation?

2025-11-07Journal article Open access
Simple item page
dc.contributor.authorDomingues Gomes, Sandra
dc.contributor.authorFletcher, William
dc.contributor.authorStone, Abi
dc.contributor.authorAnica Claro Rodrigues, Teresa Isabel
dc.contributor.authorRebotim, Andreia
dc.contributor.authorOliveira, Dulce
dc.contributor.authorGoñi, Maria Sánchez
dc.contributor.authorAbrantes, Fatima
dc.contributor.authorNaughton, Filipa
dc.date.accessioned2025-12-16T11:21:47Z
dc.date.available2025-12-16T11:21:47Z
dc.date.issued2025-11-07
dc.description.abstractA cross the last deglaciation, the atmospheric CO2 concentration (CO2) increased substantially from ∼ 180 to ∼ 280 ppm, yet its impact on vegetation dynamics across this major climatic transition remains insufficiently understood. In particular, Iberian pollen records reveal an intriguing feature that can be related to an often-overlooked role of CO2 in shaping vegetation responses during the last deglaciation. These records reveal the near disappearance of forests during the cold Last Glacial Maximum (LGM) and Heinrich Stadial 1 (HS1) phases and an unexpected recovery during the Younger Dryas (YD) cold phase when CO2 increased. Here, we present high-resolution tracers of terrestrial (pollen, C29: C31 organic biomarker) and marine (alkenone-derived Sea Surface Temperature, C37: 4 %, and long-chain n-alkanes ratios) conditions from the southwestern (SW) Iberian margin Integrated Ocean Drilling Program Site U1385 (“Shackleton site”) for the last 22 cal kyr BP. This direct land-sea comparison approach allows us to investigate how the Iberian Peninsula vegetation responded to major global CO2 changes during the last deglaciation. Our results show that cool and moderately humid conditions of the LGM supported a grassland-heathland mosaic ecosystem, but low CO2 likely caused physiological drought and suppressed forest development. HS1, the coldest and most arid period, combined with sustained low CO2 values, almost suppressed forest growth in favour of Mediterranean steppe. In contrast, the warmer Bølling-Allerød, characterised by a temperature optimum and variable but generally wetter conditions, along with the rise of CO2 above 225 ppm at ∼ 15 cal kyr BP, contributed to substantial forest development. During the YD, sufficient moisture combined with increasing CO2 enabled the persistence of a mixed grassland-forest mosaic despite cooler temperatures. Our study suggests that during cool and humid periods (LGM and YD) different pCO2 values led to contrasting SW Iberian vegetation responses. In contrast, during periods of relatively high CO2, temperature and precipitation played the main role in shaping the distribution and composition of the vegetation.eng
dc.description.sponsorshipSFRH/BD/128984/2017; MAR/LA00015/2014; CEECIND/02208/2017
dc.identifier.doi10.5194/bg-22-6631-2025
dc.identifier.issn1726-4189
dc.identifier.urihttp://hdl.handle.net/10400.1/27960
dc.language.isoeng
dc.peerreviewedyes
dc.publisherCopernicus Publications
dc.relationAlgarve Centre for Marine Sciences
dc.relationFeatures and lessons from Past Interglacials ? warm periods ? over the last 1.5 Ma
dc.relationTracking climate dynamics across the Middle Pleistocene Transition, in mid-latitudes and subtropics of the North Atlantic CLIMAx
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofBiogeosciences
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleRising atmospheric CO2 concentrations: the overlooked factor promoting SW Iberian Forest development across the LGM and the last deglaciation?eng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleFeatures and lessons from Past Interglacials ? warm periods ? over the last 1.5 Ma
oaire.awardTitleTracking climate dynamics across the Middle Pleistocene Transition, in mid-latitudes and subtropics of the North Atlantic CLIMAx
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FCTA-GEO%2F29897%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBPD%2F108600%2F2015/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.endPage6650
oaire.citation.issue21
oaire.citation.startPage6631
oaire.citation.titleBiogeosciences
oaire.citation.volume22
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream9471 - RIDTI
oaire.fundingStreamOE
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameDomingues Gomes
person.familyNameAnica Claro Rodrigues
person.familyNameRebotim
person.familyNameOliveira
person.familyNameAbrantes
person.familyNameNaughton
person.givenNameSandra
person.givenNameTeresa Isabel
person.givenNameAndreia
person.givenNameDulce
person.givenNameFatima
person.givenNameFilipa
person.identifierR-001-TTY
person.identifierR-000-JPJ
person.identifier.ciencia-idAA18-8060-B092
person.identifier.ciencia-id5D1F-695E-2D60
person.identifier.ciencia-id7511-A470-FA40
person.identifier.ciencia-idA119-CA60-3C50
person.identifier.ciencia-id021D-CA76-20D2
person.identifier.ciencia-id1419-F239-1CEA
person.identifier.orcid0000-0001-7807-3144
person.identifier.orcid0009-0007-6070-7808
person.identifier.orcid0000-0001-6950-6331
person.identifier.orcid0000-0002-3016-532X
person.identifier.orcid0000-0002-9110-0212
person.identifier.orcid0000-0002-3055-9396
person.identifier.ridH-9855-2018
person.identifier.ridB-5985-2013
person.identifier.ridE-7659-2013
person.identifier.scopus-author-id7101662626
person.identifier.scopus-author-id56829454800
person.identifier.scopus-author-id56688169500
person.identifier.scopus-author-id16030759200
person.identifier.scopus-author-id23009659300
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
relation.isAuthorOfPublication4626d16f-ea90-48a6-a727-e4fe5b07dbca
relation.isAuthorOfPublication879ec88c-74fe-431a-b593-5aec079a1419
relation.isAuthorOfPublication55570e58-9a8f-414d-a01b-6ad02d6fa36b
relation.isAuthorOfPublicationa18515cc-4754-4270-b542-e01bc11347d8
relation.isAuthorOfPublication45b2d36a-1a11-4b6c-81b3-47f657904207
relation.isAuthorOfPublication53f17112-41aa-4bd9-a437-50736dbde6f9
relation.isAuthorOfPublication.latestForDiscovery4626d16f-ea90-48a6-a727-e4fe5b07dbca
relation.isProjectOfPublicationfafa76a6-2cd2-4a6d-a3c9-772f34d3b91f
relation.isProjectOfPublication56bbcfa3-d0ad-4fbd-817a-b9fed5e36b76
relation.isProjectOfPublication9593aa81-7061-44ec-9fd6-8ed7fa1521e8
relation.isProjectOfPublication794d4c77-c731-471e-bc96-5a41dcd3d872
relation.isProjectOfPublication.latestForDiscoveryfafa76a6-2cd2-4a6d-a3c9-772f34d3b91f

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
bg-22-6631-2025.pdf
Size:
2.18 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
3.46 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CCM2-Artigos (em revistas ou actas indexadas)