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- W3038049586 endingPage "7319" @default.
- W3038049586 startingPage "7306" @default.
- W3038049586 abstract "Abstract The geographic distribution of sexual‐apomictic taxa (i.e., comprising individuals usually reproducing either sexually or asexually via seeds) is traditionally thought to be driven by their ecological preferences and colonization histories. Where sexuals and apomicts get into contact with each other, competitive and reproductive interactions can interfere with these factors, an aspect which hitherto received little attention in biogeographic studies. We disentangled and quantified the relative effects of the three factors on the distribution of tetraploid sexuals in Potentilla puberula in a latitudinal transect through the Eastern European Alps, in which they are codistributed with penta‐, hepta‐, and octoploid apomictic conspecifics. Effects were explored by means of binomial generalized linear regression models combining a single with a multiple predictor approach. Postglacial colonization history was inferred from population genetic variation (AFLPs and cpDNA) and quantified using a cost distance metric. The study was based on 235 populations, which were purely sexual, purely apomictic, or of mixed reproductive mode. The occurrence of apomicts explained most of the variation in the distribution of sexuals (31%). Specifically, the presence of sexual tetraploids was negatively related to the presence of each of the three apomictic cytotypes. Effects of ecological preferences were substantial too (7% and 12% of the total variation explained by ecological preferences alone, or jointly with apomicts’ occurrence, respectively). In contrast, colonization history had negligible effects on the occurrence of sexuals. Taken together, our results highlight the potentially high impact of reproductive interactions on the geographic distribution of sexual and apomictic conspecifics and that resultant mutual exclusion interrelates to ecological differentiation, a situation potentially promoting their local coexistence." @default.
- W3038049586 created "2020-07-02" @default.
- W3038049586 creator A5013288175 @default.
- W3038049586 creator A5017643934 @default.
- W3038049586 creator A5017919759 @default.
- W3038049586 creator A5061410996 @default.
- W3038049586 creator A5078486276 @default.
- W3038049586 creator A5079027268 @default.
- W3038049586 date "2020-06-22" @default.
- W3038049586 modified "2023-10-18" @default.
- W3038049586 title "Occurrence of apomictic conspecifics and ecological preferences rather than colonization history govern the geographic distribution of sexual <i>Potentilla puberula</i>" @default.
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