Nunatak survival, tabula rasa and the influence of the Pleistocene ice-ages on plant evolution in mountain areas

Gugerli, Félix; Holderegger, Rolf

doi:10.1016/s1360-1385(01)02053-2

Cited by 29 publications

(24 citation statements)

References 4 publications

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“…By contrast, G. reptans is assumed capable of in‐situ glacial survival, because of its present high alpine pioneer habitats. The species has potentially survived on snow‐free ridges of supraglacial mountain tops (nunataks), as proposed by Brockmann‐Jerosch & Brockmann‐Jerosch (1926), Stehlik (2000) and Gugerli & Holderegger (2001) and substantiated by Stehlik et al. (2002a,b) and Bettin et al.…”

Section: Introductionmentioning

confidence: 85%

Concordant genetic breaks, identified by combining clustering and tessellation methods, in two co‐distributed alpine plant species

et al. 2009

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Natural genetic breaks may indicate limitations to gene flow or the presence of contact zones of previously isolated populations. Molecular evidence suggests that genetic breaks have aggregated in distinct geographical areas. We propose a new application of well-established statistical methods for analysing multilocus genetic data to identify intraspecific genetic breaks. The methodological approach combines Bayesian clustering with a spatially explicit maximum-difference algorithm to visualize and quantify breaks between clusters. We used amplified fragment length polymorphism data of two co-distributed, silicicolous alpine plant species, Geum montanum and Geum reptans, exhaustively sampled on a consistent, regular grid over their entire range of the European Alps and the Carpathians. We found a distinct and highly similar allocation of genetic breaks in both species. The pattern of breaks did not conform to scenarios of glacial refugial survival, alternatively in peripheral refugia or on nunataks, as expected because of the species' ecologies (late-successional low alpine vs. early-successional high alpine). Our findings rather substantiated the postulate of a general pattern of genetic breaks in alpine plants and corresponded well with biogeographical regions formerly described. Our approach could serve as a tool not only for landscape genetics and comparative phylogeography, but also for floristics or faunistics to compare biogeographic with phylogeographic breaks.

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Section: Introductionmentioning

confidence: 85%

Concordant genetic breaks, identified by combining clustering and tessellation methods, in two co‐distributed alpine plant species

et al. 2009

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“…Several recent studies concerned plants, especially flowering plants, in the European Alps (from here on called 'the Alps') (e.g. Gugerli and Holderegger 2001;Schönswetter et al 2005;Thiel-Egenter et al 2011). Source populations for late-to post-glacial colonization of the Alps by plants occurred in glacial refugia in the lowlands, often along the margins of the glaciated area, or on nunataks within the ice shield, and the molecular evidence for such refugia was summarized by Schönswetter et al (2005).…”

Section: Introductionmentioning

confidence: 99%

Phylogeography of Alpine populations of Rhytidium rugosum (Bryophyta) in a European context

Hedenäs

2017

Alp Botany

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The phylogeography and possible origins of the moss Rhytidium rugosum (Hedw.) Kindb. in the European Alps are studied based on information from the nuclear internal transcribed spacers 1 and 2 and a portion of the gene region for glyceraldehyde 3-phosphate dehydrogenase for 364 European specimens. Seventy-three Alps specimens were sampled from W Switzerland to W Austria, and were divided into four regional populations along a WestSouth-West (WSW) to East-North-East (ENE) gradient. These populations were compared with similar ones previously studied in other parts of Europe. The ENE-most Alps population, located ENE of the Adige break zone, deviates genetically from the other three. The two WSWmost populations of the Alps appear to be relatively isolated from most of the European populations outside the Alps, whereas the two ENE ones are similar to populations of northern Scandinavia. Populations in between the Alps and the Scandinavian mountain range deviate from those to the north and south, possibly due to low effective population sizes, earlier bottleneck events, or colonization from different source populations. Haplotype diversity and number of private haplotypes are marginally higher in the Alps than in Scandinavia. It is suggested that European Rhytidium originated from late glacial maximum refugia in (1) E-NE Europe, (2) in between the Late Glacial Maximum ice shields of Scandinavia and the Alps, and (3) S, SW, and W of the Swiss Alps. Those of the E Alps potentially originated mainly in E-NE Europe and those of the W Alps in the S, SW, and W.

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“…The glaciated mountain areas of southern Europe (i.e. the Pyrenees, the Alps, and the Carpathians) may have contained ice‐free peaks (nunataks) that acted as refugia for alpine species (Gugerli & Holderegger, ; Stehlik, Schneller & Bachmann, ; Stehlik, ). An increasing number of studies has also indicated the existence of periglacial refugia in relatively northern areas in the periglacial zones (Stewart & Lister, ).…”

Section: Introductionmentioning

confidence: 99%

Phylogeography of the European rock roseHelianthemum nummularium(Cistaceae): incongruent patterns of differentiation in plastid DNA and morphology

2014

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Helianthemum nummularium is a morphologically variable species that has been subdivided into several subspecies based on indumentum characters. We investigated four of these subspecies for variation in plastid DNA and leaf and petal shape in Europe. Three size-variable mononucleotide repeat regions were amplified by means of species-specific primers and 18 combined haplotypes were identified. The highest haplotype diversity was found in the Alps and the surrounding lowland areas, whereas marginal areas such as northern Europe and the south-eastern Balkans had a lower diversity. Most of the common haplotypes were shared between subspecies and showed a geographical structuring across the range of the species, whereas geographically restricted haplotypes were found elsewhere (e.g. in the Baltic area). Leaf and petal shape descriptors could not differentiate between subspecies. The role of hybridization and introgression between post-glacial migration lineages is discussed. As an alternative hypothesis to introgression between ancient taxa, we suggest that the poor correspondence between plastid haplotype distribution and subspecies circumscription could be a result of multiple origins of similar morphs (grouped into taxonomic subspecies) in different parts of the distribution range of the complex.

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Nunatak survival, tabula rasa and the influence of the Pleistocene ice-ages on plant evolution in mountain areas

Cited by 29 publications

References 4 publications

Concordant genetic breaks, identified by combining clustering and tessellation methods, in two co‐distributed alpine plant species

Concordant genetic breaks, identified by combining clustering and tessellation methods, in two co‐distributed alpine plant species

Phylogeography of Alpine populations of Rhytidium rugosum (Bryophyta) in a European context

Phylogeography of the European rock roseHelianthemum nummularium(Cistaceae): incongruent patterns of differentiation in plastid DNA and morphology

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