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Past climatic refugia and landscape resistance explain spatial genetic structure in Oriental beech in the South Caucasus

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cris.virtualsource.author-orcid6ec8c968-521f-4d99-bbd3-724dedc7c282
dc.abstract.enPredicting species-level effects of climatic changes requires unraveling the factors affecting the spatial genetic composition. However, disentangling the relative contribution of historical and contemporary drivers is challenging. By applying landscape genetics and species distribution modeling, we investigated processes that shaped the neutral genetic structure of Oriental beech (Fagus orientalis), aiming to assess the potential risks involved due to possible future distribution changes in the species. Using nuclear microsatellites, we analyze 32 natural populations from the Georgia and Azerbaijan (South Caucasus). We found that the species colonization history is the most important driver of the genetic pattern. The detected west–east gradient of genetic differentiation corresponds strictly to the Colchis and Hyrcanian glacial refugia. A significant signal of associations to environmental variables suggests that the distinct genetic composition of the Azerbaijan and Hyrcanian stands might also be structured by the local climate. Oriental beech retains an overall high diversity; however, in the context of projected habitat loss, its genetic resources might be greatly impoverished. The most affected are the Azerbaijan and Hyrcanian populations, for which the detected genetic impoverishment may enhance their vulnerability to environmental change. Given the adaptive potential of range-edge populations, the loss of these populations may ultimately affect the specie's adaptation, and thus the stability and resilience of forest ecosystems in the Caucasus ecoregion. Our study is the first approximation of the potential risks involved, inducing far-reaching conclusions about the need of maintaining the genetic resources of Oriental beech for a species' capacity to cope with environmental change.
dc.affiliationWydział Leśny i Technologii Drewna
dc.affiliation.instituteKatedra Hodowli Lasu
dc.contributor.authorSękiewicz, Katarzyna
dc.contributor.authorDanelia, Irina
dc.contributor.authorFarzaliyev, Vahid
dc.contributor.authorGholizadeh, Hamid
dc.contributor.authorIszkuło, Grzegorz
dc.contributor.authorNaqinezhad, Alireza
dc.contributor.authorRamezani, Elias
dc.contributor.authorThomas, Peter A.
dc.contributor.authorTomaszewski, Dominik
dc.contributor.authorWalas, Łukasz
dc.contributor.authorDering, Monika
dc.date.access2022
dc.date.accessioned2025-11-19T12:05:32Z
dc.date.available2025-11-19T12:05:32Z
dc.date.copyright2022-09-20
dc.date.issued2022
dc.description.abstract<jats:title>Abstract</jats:title><jats:p>Predicting species‐level effects of climatic changes requires unraveling the factors affecting the spatial genetic composition. However, disentangling the relative contribution of historical and contemporary drivers is challenging. By applying landscape genetics and species distribution modeling, we investigated processes that shaped the neutral genetic structure of Oriental beech (<jats:italic>Fagus orientalis</jats:italic>), aiming to assess the potential risks involved due to possible future distribution changes in the species. Using nuclear microsatellites, we analyze 32 natural populations from the Georgia and Azerbaijan (South Caucasus). We found that the species colonization history is the most important driver of the genetic pattern. The detected west–east gradient of genetic differentiation corresponds strictly to the Colchis and Hyrcanian glacial refugia. A significant signal of associations to environmental variables suggests that the distinct genetic composition of the Azerbaijan and Hyrcanian stands might also be structured by the local climate. Oriental beech retains an overall high diversity; however, in the context of projected habitat loss, its genetic resources might be greatly impoverished. The most affected are the Azerbaijan and Hyrcanian populations, for which the detected genetic impoverishment may enhance their vulnerability to environmental change. Given the adaptive potential of range‐edge populations, the loss of these populations may ultimately affect the specie's adaptation, and thus the stability and resilience of forest ecosystems in the Caucasus ecoregion. Our study is the first approximation of the potential risks involved, inducing far‐reaching conclusions about the need of maintaining the genetic resources of Oriental beech for a species' capacity to cope with environmental change.</jats:p>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if2,6
dc.description.number9
dc.description.points100
dc.description.versionfinal_published
dc.description.volume12
dc.identifier.doi10.1002/ece3.9320
dc.identifier.issn2045-7758
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/5985
dc.identifier.weblinkhttps://onlinelibrary.wiley.com/doi/10.1002/ece3.9320
dc.languageen
dc.pbn.affiliationforestry
dc.relation.ispartofEcology and Evolution
dc.relation.pagese9320
dc.rightsCC-BY
dc.sciencecloudnosend
dc.subject.enconservation genetics
dc.subject.enFagus orientalis
dc.subject.engenetic structure
dc.subject.enhabitat stability
dc.subject.enlandscape genetics
dc.subject.enspecies distribution modeling
dc.titlePast climatic refugia and landscape resistance explain spatial genetic structure in Oriental beech in the South Caucasus
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue9
oaire.citation.volume12