10.5061/DRYAD.3HH96V4
Bertel, Clara
University of Innsbruck
Rešetnik, Ivana
University of Zagreb
Frajman, Božo
University of Innsbruck
Erschbamer, Brigitta
University of Innsbruck
Hülber, Karl
University of Vienna
Schönswetter, Peter
University of Innsbruck
Data from: Natural selection drives parallel divergence in the mountain
plant Heliosperma pusillum s.l.
Dryad
dataset
2018
Parallel evolution
ecological and morphological differentiation
2018-04-12T18:06:03Z
2018-04-12T18:06:03Z
en
https://doi.org/10.1111/oik.05364
277377 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
(1) The evolution of species or ecotypes can occur gradually through
neutral and adaptive genetic changes. To explore the influence of natural
selection during early phases of divergence, morphological and ecological
discontinuity and its adaptive significance were investigated in six pairs
of alpine and independently evolved montane populations of Heliosperma
pusillum .; the latter are usually taxonomically recognised at the species
rank in spite of their highly doubtful debatable taxonomic value. (2) We
tested whether environmental conditions – characterised by Landolt
indicator values from vegetation surveys and temperature measurements –
and morphology of alpine and montane populations differ discretely and in
parallel across six population pairs. By reciprocal transplantation
experiments in natural environments in two population pairs and in climate
chambers for five population pairs we compared fitness of native vs.
non-native individuals. (3) Alpine and montane populations differed in
environmental conditions and morphology within each pair. Morphological
differentiation occurred in parallel and correlated with environmental,
but not with genetic distances. In both environments, native individuals
had higher establishment success and plant size. (4) Differentiation of
the independently evolved montane populations is driven by natural
selection and parallel, independent adaptation in response to drought,
lower irradiance and higher, less fluctuating temperatures in montane and
alpine populations, respectively. Our study system exemplifies rapid,
parallel evolution leading to morphologically and ecologically strongly
divergent, though fully interfertile, ecotypes.
Ecological DifferentiationAccompanying vegetation and the attributed
Landolt indicator valuesDataNiche.csvMorphological
differentiationcharacter values of
morphologyheliosperma_morphometry_CB.csvTransplantsMonitoringFitness
Monitoring in natural populationsTransplants SurvivalNumber of seedlings
recorded in natural populationsTransplantsNumberSeedlings.csvGermination
and Fitness recorded in climate chambersKeimungFitnessKlimaschrank.csv