Identification of refugia and post-glacial colonisation routes of European white oaks based on chloroplast DNA and fossil pollen evidence

Petit, Rémy J.; Brewer, Simon; Bordács, Sándor; Burg, K.; Cheddadi, Rachid; Coart, Els; Cottrell, Joan; Csaikl, Ulrike M; Dam, Barbara van; Deans, J. D.; Espinel, S.; Fineschi, Silvia; Finkeldey, Reiner; Glaz, Izabela; Goicoechea, P. G.; Jensen, Jan H.; König, Armin O.; Lowe, Andrew J.; Madsen, Søren Flemming; Mátyás, Gábor; Munro, R.C.; Popescu, Flaviu; Slade, Danko; Tabbener, Helen; Vries, Sven G.M de; Ziegenhagen, Birgit; Beaulieu, Jacques‐Louis de; Kremer, Antoine

doi:10.1016/s0378-1127(01)00634-x

Cited by 605 publications

(652 citation statements)

References 44 publications

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“…Such a scenario has also been proposed for Populus tremula in Central Europe (Fussi et al 2010) and for most populations of Salix herbacea (Alsos et al 2009). In Quercus species, the formation of a poorly demarcated suture zone in Western Europe has been explained as the consequence of local dispersal in combination with long-distance jumps during recolonisation (Petit et al 2002a, b). The hypothesis that B. humilis recolonised from disconnected refugia is supported by the phylogeographic structure evidenced in our total sample because N ST was significantly higher than G ST across the study area.…”

Section: Discussionsupporting

confidence: 52%

“…Organelle markers are uniparentally inherited and exhibit reduced effective population sizes; hence, they reveal a clearer picture of the genealogical history of a species than do nuclear markers (Vettori et al 2004). Previous studies have successfully used cpDNA markers to deduce the locations of glacial refugia and postglacial colonisation routes in Alnus glutinosa (King and Ferris 1998), Fagus sylvatica (Demesure et al 1996;Magri et al 2006), Fraxinus excelsior (Heuertz et al 2004), Quercus (Csaikl et al 2002;Petit et al 2002a, b), Populus (Cottrell et al 2005;Fussi et al 2010) and Betula (Palmé et al 2003;Maliouchenko et al 2007;Thórsson et al 2010).…”

Section: Introductionmentioning

confidence: 99%

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Chloroplast DNA variation of Betula humilis Schrk. in Poland and Belarus

Jadwiszczak

Banaszek

Jabłońska

et al. 2012

Tree Genetics & Genomes

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Betula humilis is an endangered plant species in Central Europe. In order to protect this species, it is necessary to document its genetic diversity in this region and to identify areas for conservation prioritisation. As molecular investigations conducted throughout the ranges of many plant species have shown that the highest genetic diversities are found within former glacial refugia and/or within the contact zones of different phylogenetic lineages, we investigated the reasons underlying the considerable genetic variation of B. humilis in northeastern Poland revealed previously using nuclear microsatellites. We analysed 365 individuals of B. humilis from 19 populations and 67 specimens of Betula pendula and Betula pubescens sampled in four geographical regions in Poland and Belarus for polymorphism in chloroplast PCR-restriction fragment length polymorphism markers. Genetic data strongly suggested that B. humilis could have survived the Last Glacial Maximum at higher latitudes, but the hypothesis of a refugium in southeastern Poland was rejected. Chloroplast DNA analysis confirmed high genetic diversity in some populations in northeastern Poland. This phenomenon can likely be explained in terms of a suture zone, as the high haplotypic richness was followed by h T ≤v T . Similar patterns of haplotype distributions in the birches under study and high introgression ratio (IG00.71) among B. humilis and congeneric trees suggested that postglacial recolonisation of the shrub birch was complicated by haplotype sharing with other birches.

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Section: Discussionsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Chloroplast DNA variation of Betula humilis Schrk. in Poland and Belarus

Jadwiszczak

Banaszek

Jabłońska

et al. 2012

Tree Genetics & Genomes

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“…Like other plant species, the distribution of hazel in Europe is strongly affected by postglacial recolonization (Huntley and Birks 1983;Huntley 1990;Palmé and Vendramin 2002). In recent years and decades analyses of spatial genetic structures in forest tree and shrub species have yielded valuable information concerning this process, especially concerning the number and approximate location of glacial refugia and their expansion to the central and northern parts of Europe (see for example, Petit et al 2002Petit et al , 2003Magri et al 2006;Tollefsrud et al 2008).…”

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confidence: 99%

Genetic variation of chloroplast and nuclear markers in natural populations of hazelnut (Corylus avellana L.) in Germany

Leinemann

Steiner

Hosius³

et al. 2012

Plant Syst Evol

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Corylus avellana L. (hazel) is a long-lived, monoecious and wind-pollinated shrub species, widespread all over Europe. In Germany, hazel is intensively traded and planted, and thus is of central interest from a nature conservancy point of view. To assess the within-and between-population differentiation of hazel, 20 natural populations (18 from Germany, one from Italy and one from Hungary) were investigated genetically. Seven isozyme systems comprising 11 gene loci were analysed in up to 100 samples (average 92.6) per population, amplified fragment length polymorphisms (AFLP) were analysed in up to 50 samples (average 47.4) and nine cpDNA-SSR markers were assessed in 20 samples per population. Results for overall isozyme variability with Na 2.46 alleles per locus, allelic diversity (Ne) 1.39, expected heterozygosity He 21 % and 79 % polymorphic loci were in accordance with the findings of previous studies. The respective values for AFLPs were lower, but both marker systems revealed the same level of about 3.5 % differentiation between populations. For cpSSR only the Italian sample showed within-population variation and the two haplotypes were completely differentiated from all other populations expressing a unique genetic structure with one single haplotype. Among the three marker systems AFLPs showed the best ability to differentiate between populations. While only one isozyme locus revealed significant differentiation, 41 AFLP loci showed highly significant differentiation between all populations, but 26 loci when only German populations were considered. Consequently geographic differentiation analyses focused mainly on molecular markers. Mantel tests showed significant correlations between genetic and geographic distance, but in the unweighted pair-group method with arithmetic mean analyses, adjacent populations did not always form clusters. While chloroplast markers were able to clearly distinguish only the Hungarian population, the nuclear

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“…Broadly speaking a tendency towards warmer and wetter climate is found in all the records considered in the present analysis where broadleaved trees -both evergreen and deciduous -replaced conifers in most sites. Some of these areas would have acted as glacial refugia, enclosing some marginal oak forests that would have remained over the glacial and postglacial period (Brewer et al, 2002;Carrión et al, 2003b;Petit et al, 2002). Broadleaved elements were continuously present at the coastal mountain areas since the beginning of the Holocene, while in the intramontane regions and the lowlands the spreading of deciduous forest began abruptly at ca.…”

Section: Fire Activity Anomalies and Vegetation Response: The Role Ofmentioning

confidence: 99%

Holocene fire activity and vegetation response in South-Eastern Iberia

Gil‐Romera

2012

Quaternary International

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Since fire has been recognised as an essential disturbance in Mediterranean landscapes, the study of long-term fire ecology has developed rapidly. We have reconstructed a sequence of vegetation dynamics and fire changes across south-eastern Iberia by coupling records of climate, fire, vegetation and human activities. We calculated fire activity anomalies (FAAs) in relation to 3 kyr cal BP for 10-8 kyr cal BP, 6 kyr cal BP, 4 kyr cal BP and the present. For most of the Early to the Mid-Holocene uneven, but low fire events were the main vegetation driver at high altitudes where broadleaved and coniferous trees presented a highly dynamic post-fire response. At mid-altitudes in the mainland Segura Mountains, fire activity remained relatively stable, at similar levels to recent times. We hypothesize that coastal areas, both mountains and lowlands, were more fire-prone landscapes as biomass was more likely to have accumulated than in the inland regions, triggering regular fire events. The wet and warm phase towards the Mid-Holocene (between ca. 8 and 6 kyr cal BP) affected the whole region and promoted the spread of mesophytic forest co-existing with Pinus, as FAAs appear strongly negative at 6 kyr cal BP, with a less important role of fire. Mid and Late Holocene landscapes were shaped by an increasing aridity trend and the rise of human occupation, especially in the coastal mountains where forest disappeared from ca. 2 kyr cal BP. Mediterranean-type vegetation (evergreen oaks and Pinus pinaster-halepensis types) showed the fastest post-fire vegetation dynamics over time.

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Identification of refugia and post-glacial colonisation routes of European white oaks based on chloroplast DNA and fossil pollen evidence

Cited by 605 publications

References 44 publications

Chloroplast DNA variation of Betula humilis Schrk. in Poland and Belarus

Chloroplast DNA variation of Betula humilis Schrk. in Poland and Belarus

Genetic variation of chloroplast and nuclear markers in natural populations of hazelnut (Corylus avellana L.) in Germany

Holocene fire activity and vegetation response in South-Eastern Iberia

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