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Andreas Tribsch
Researcher at University of Salzburg
Publications - 69
Citations - 4436
Andreas Tribsch is an academic researcher from University of Salzburg. The author has contributed to research in topics: Population & Range (biology). The author has an hindex of 31, co-authored 69 publications receiving 4160 citations. Previous affiliations of Andreas Tribsch include University of Oslo & American Museum of Natural History.
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Taxonomy and cytogeography of Cardamine raphanifolia and C. gallaecica (Brassicaceae) in the Iberian Peninsula
TL;DR: This study validate the treatment of C. raphanifolia and C. gallaecica as distinct species, and show their clear differentiation based on morphometric and molecular AFLP analyses, and both species are clearly distinct from C. amara subsp.
Journal ArticleDOI
Strong nuclear differentiation contrasts with widespread sharing of plastid DNA haplotypes across taxa in European purple saxifrages (Saxifraga section Porphyrion subsection Oppositifoliae)
Manuela Winkler,Andreas Tribsch,Gerald M. Schneeweiss,Sabine Brodbeck,Felix Gugerli,Rolf Holderegger,Peter Schönswetter +6 more
TL;DR: Using amplified fragment length polymorphism (AFLP) fingerprinting, it is shown that some taxa form strongly supported genetic entities best recognized at the species level (S.’biflora, S. blepharophylla, S’speciosa), whereas others are not genetically divergent at all.
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Difference in reproductive mode rather than ploidy explains niche differentiation in sympatric sexual and apomictic populations of Potentilla puberula
Henar Alonso-Marcos,Flavia Domizia Nardi,Susanne Scheffknecht,Andreas Tribsch,Karl Hülber,Christoph Dobeš +5 more
TL;DR: It is concluded that reproductive mode rather than ploidy is the main driver of the observed differences and underline the relevance of studying ecological parthenogenesis in sympatry, to minimize the effects of differential migration abilities.
Complex distribution patterns of di-, tetra- and hexaploid cytotypes in the European high mountain plant Senecio carniolicus Willd. (Asteraceae)
Jan Suda,Hanna Weiss_Schneeweiss,Andreas Tribsch,Gerald M. Schneeweiss,Pavel Trávníček,Peter Schönswetter +5 more
Abstract: DNA ploidy levels were estimated using DAPI-flow cytometry of silica-dried specimens of the European mountain plant Senecio carniolicus (Asteraceae), covering its entire distribution area in the Eastern Alps (77 populations, 380 individuals) and the Carpathians (five populations, 22 individuals). A complex pattern of ploidy level variation (2x, 4x, 5x, 6x, and 7x cytotypes) was found in this species, which has been considered uniformly hexaploid. Hexaploids predominated in the Eastern Alps and was the only cytotype found in the Carpathians, while odd ploidy levels (5x, 7x) constituted a small fraction of the samples (<1.3%). Tetraploids occurred in two disjunct areas, which correspond with putative Pleistocene refugia for silicicolous alpine plants. Diploids occurred in large portions of the Alps but were absent from areas most extensively glaciated in the past. Intrapopulational cytotype mixture was detected in 22 populations-the majority involving diploids and hexaploids-with intermediate ploidy levels mostly lacking, suggesting limited gene flow and the evolution of reproductive isolation. Significant and reproducible intracytotype variation in nuclear DNA content was observed. Higher genome size in western diploids might be due to ancient introgression with the closely related S. incanus or to different evolutionary pathways in the geographically separated diploids.