Morphological diversity and phylogeography of the Georgian durmast oak (Q. petraea subsp. iberica) and related Caucasian oak species in Georgia (South Caucasus)

Ekhvaia, Jana; Simeone, Marco Cosimo; Silakadze, Nana; Abdaladze, Otar

doi:10.1007/s11295-018-1232-6

Cited by 17 publications

(9 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The genetic distinctiveness of Scots pine populations from the Greater and the Lesser Caucasus reported here is also known for other species, despite the relatively close distance between both mountain ranges, which is less than 100 km [89][90][91][92] . The main barrier for gene flow retrieved with the EEMS analysis encompasses mostly the western part of the South Caucasus (Fig.…”

Section: Discussionsupporting

confidence: 67%

The evolutionary heritage and ecological uniqueness of Scots pine in the Caucasus ecoregion is at risk of climate changes

Dering

Baranowska

Beridze

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Scots pine is one of the most widely occurring pines, but future projections suggest a large reduction in its range, mostly at the southern European limits. A significant part of its range is located in the Caucasus, a global hot-spot of diversity. Pine forests are an important reservoir of biodiversity and endemism in this region. We explored demographic and biogeographical processes that shaped the genetic diversity of Scots pine in the Caucasus ecoregion and its probable future distribution under different climate scenarios. We found that the high genetic variability of the Caucasian populations mirrors a complex glacial and postglacial history that had a unique evolutionary trajectory compared to the main range in Europe. Scots pine currently grows under a broad spectrum of climatic conditions in the Caucasus, which implies high adaptive potential in the past. However, the current genetic resources of Scots pine are under high pressure from climate change. From our predictions, over 90% of the current distribution of Scots pine may be lost in this century. By threatening the stability of the forest ecosystems, this would dramatically affect the biodiversity of the Caucasus hot-spot.

show abstract

Section: Discussionsupporting

confidence: 67%

The evolutionary heritage and ecological uniqueness of Scots pine in the Caucasus ecoregion is at risk of climate changes

Dering

Baranowska

Beridze

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…iberica was lost in Europe, whereas some chloroplast DNA haplotypes are still shared between Q. iberica from western Georgia and Q. petraea s. str. from Europe (Ekhvaia et al 2018). This pattern of extirpation and speciation is also seen in Alnus barbata (Alnus glutinosa subsp.…”

Section: Biogeographic Affinitiesmentioning

confidence: 59%

The late Early Pleistocene flora of Oriolo, Faenza (Italy): assembly of the modern forest biome

Denk¹,

Sami²,

Teodoridis³

et al. 2022

View full text Add to dashboard Cite

The late Early Pleistocene was the last time of equable climate in northern Central Italy, reflected in its large mammal fauna and numerous palynological records. Reliably dated leaf fossils from this time are rare, but provide crucial information on local and regional vegetation, biogeographic relationships, and species turnover coinciding with the assembly of modern forest biomes. Here we investigated a rich assemblage of leaf and fruit impressions (63 fossil-taxa) from the Oriolo quarry, Faenza (Ravenna), dated to the latest Calabrian, preserved in transgressive coastal deposits. The fossil assemblage represents riparian vegetation and xeric alluvial habitats in the lowlands and forest vegetation above the alluvial plain. Forest-building trees were deciduous, but comprised several taxa characteristic of open scrubland or forest edges. The composition of the flora reflects a dynamic process of assembling modern forest biomes in western Eurasia. While most taxa correspond to modern submediterranean and temperate woody species, some others represent late occurrences of taxa today confined to refugia outside Italy (Parrotia, Gleditsia, Pterocarya), and a few are Miocene/Pliocene relics indicating final floristic links with East Asia (Japan) and/or North America (Tsuga cf. chiarugii, Carya cf. minor) and Pleistocene endemism in Italy (Berberis auriolensis, Acer aemilianum).

show abstract

“…The copyright holder for this this version posted January 11, 2023. ; https://doi.org/10. 1101/2023 Likhi Range, a mountain chain running longitudinally in the Central Caucasus (Ekhavaia, et al, 2018). Also, this mountain range divides the region into two divergent climatic provenances -more humid to the west and dry to the east.…”

Section: Introductionmentioning

confidence: 99%

“…Krassiln.) is attributed to the effect of the geographic barrier formed by the Likhi Range, a mountain chain running longitudinally in the Central Caucasus (Ekhavaia, et al ., 2018). Also, this mountain range divides the region into two divergent climatic provenances – more humid to the west and dry to the east.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evolutionary history ofCastanea sativaMill. in the Caucasus driven by Middle and Late Pleistocene paleoenvironmental changes

Beridze

Sękiewicz

Walas

et al. 2023

Preprint

View full text Add to dashboard Cite

Due to global climate cooling and aridification since the Paleogene, the members of the Neogene flora were extirpated from the Northern Hemisphere or were confined to a few refugial areas. For some species, the final reduction/extinction came in the Pleistocene, but some others have survived climatic transformations up to the present. This has occurred in Castanea sativa, a species of high commercial value in Europe and a significant component of the Caucasian forest biodiversity. In contrast to the European range, neither the historical biogeography nor the population genetic structure of the species in the isolated Caucasian range has been clarified. Here, based on a survey of 21 natural populations from the Caucasus and a single one from Europe, we provide likely biogeographic reconstruction and genetic diversity details. By applying Bayesian inference, species distribution modelling, and fossil pollen data, we estimated (1) the time of the Caucasian - European divergence during the Middle Pleistocene (436.5 ka), (2) the time of divergence among Caucasian lineages, and (3) outlined the glacial refugia for species. The climate changes related to the Early Middle Pleistocene Transition and the alpine orogenic uplift in the region are proposed as the major drivers of the intraspecific divergence and European-Caucasian disjunction, while the impact of the last glacial cycle was of marginal importance.

show abstract

Morphological diversity and phylogeography of the Georgian durmast oak (Q. petraea subsp. iberica) and related Caucasian oak species in Georgia (South Caucasus)

Cited by 17 publications

References 74 publications

The evolutionary heritage and ecological uniqueness of Scots pine in the Caucasus ecoregion is at risk of climate changes

The evolutionary heritage and ecological uniqueness of Scots pine in the Caucasus ecoregion is at risk of climate changes

The late Early Pleistocene flora of Oriolo, Faenza (Italy): assembly of the modern forest biome

Evolutionary history ofCastanea sativaMill. in the Caucasus driven by Middle and Late Pleistocene paleoenvironmental changes

Contact Info

Product

Resources

About