10.5061/DRYAD.28N72
Trunschke, Judith
Uppsala University
Sletvold, Nina
Uppsala University
Agren, Jon
Uppsala University
Data from: Interaction intensity and pollinator-mediated selection
Dryad
dataset
2018
Epipactis palustris (L.) Crantz
Dactylorhiza viridis (L.) R.M.Bateman
Neotinea ustulata (L.) R.M.Bateman
D. sambucina (L.) Soó
pollinator-mediated selection
Platanthera bifolia (L.) Rich.
opportunity for selection
Orchis mascula (L.) L.
Orchidaceae
2013
pollen limitation
Neottia ovata (L.) Bluff & Fingerh.
Gymnadenia conopsea (L.) R.Br.
Dactylorhiza incarnata (L.) Soó
O. militaris (L.)
Anacamptis morio (L.) R.M.Bateman, Pridgeon & M.W.Chase
P. chlorantha (Custer) Rchb.
2018-01-19T00:00:00Z
2018-01-19T00:00:00Z
en
https://doi.org/10.1111/nph.14479
876134 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
In animal-pollinated plants, the opportunity for selection and the
strength of pollinator-mediated selection are expected to increase with
the degree of pollen limitation. However, whether differences in pollen
limitation can explain variation in pollinator-mediated and net selection
among animal-pollinated species is poorly understood. In the present
study, we quantified pollen limitation, variance in relative fitness and
pollinator-mediated selection on five traits important for pollinator
attraction (flowering start, plant height, flower number, flower size) and
pollination efficiency (spur length) in natural populations of 12 orchid
species. Pollinator-mediated selection was quantified by subtracting
estimates of selection gradients for plants receiving supplemental
hand-pollination from estimates obtained for open-pollinated control
plants. Mean pollen limitation ranged from zero to 0.96. Opportunity for
selection, pollinator-mediated selection and net selection were all
positively related to pollen limitation, whereas nonpollinator-mediated
selection was not. Opportunity for selection varied five-fold, strength of
pollinator-mediated selection varied three-fold and net selection varied
1.5-fold among species. Supplemental hand-pollination reduced both
opportunity for selection and selection on floral traits. The results show
that the intensity of biotic interactions is an important determinant of
the selection regime, and indicate that the potential for
pollinator-mediated selection and divergence in floral traits is
particularly high in species that are strongly pollen-limited.
Trunschke et al._NewPhytologist_2017_strength of selection_DRYAD_raw
dataThe data file provides row data collect in summer 2013 (Mai-August) on
five phenotypic traits (flowering start, plant height, flower number,
flower size, spur length) and measurements of female reproductive success
(number of fruits, fruit mass) for one population of each of twelve
different orchid species (Anacamptis morio (L.) R.M.Bateman, Pridgeon
& M.W.Chase, Dactylorhiza incarnata (L.) Soó, D. sambucina (L.)
Soó, Orchis mascula (L.) L., O. militaris (L.), and Neotinea ustulata (L.)
R.M.Bateman, Pridgeon & M.W.Chase, and of the rewarding species
Dactylorhiza viridis (L.) R.M.Bateman, Pridgeon & M.W.Chase,
Epipactis palustris (L.) Crantz, Gymnadenia conopsea (L.) R.Br., Neottia
ovata (L.) Bluff & Fingerh., Platanthera bifolia (L.) Rich., and
P. chlorantha (Custer) Rchb.). These data were used calculate mean±SE of
phenotypic traits and female fitness. In addition, phenotypic traits are
provided as standardized values to a mean of 0 and a variance of 1, and
relative fitness as individual fitness divided by mean fitness.
Standardisation is done by population and treatment. These data are used
to calculate selection gradients by population and treatment, whose
absolute values were then used for all higher-level analysis relating
strength of selection and degree of pollen limitation.
Baltic island Öland
southern Sweden