10.5061/DRYAD.60P5D
Turner, Kathryn G.
University of British Columbia
Fréville, Hélène
French National Institute for Agricultural Research
French National Centre for Scientific Research
Rieseberg, Loren H.
Indiana University Bloomington
University of British Columbia
Data from: Adaptive plasticity and niche expansion in an invasive thistle
Dryad
dataset
2016
climatic niche
trade-offs
evolution of invasive species
20th century
Centaurea diffusa
adaptive plasticity
2016-06-18T00:00:00Z
2016-06-18T00:00:00Z
en
https://doi.org/10.1002/ece3.1599
https://github.com/kgturner/FranceCG
567767 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Phenotypic differentiation in size and fecundity between native and
invasive populations of a species has been suggested as a causal driver of
invasion in plants. Local adaptation to novel environmental conditions
through a micro-evolutionary response to natural selection may lead to
phenotypic differentiation and fitness advantages in the invaded range.
Local adaptation may occur along a stress tolerance trade-off, favoring
individuals that, in benign conditions, shift resource allocation from
stress tolerance to increased vigor and fecundity and, therefore,
invasiveness. Alternately, the typically disturbed invaded range may
select for a plastic, generalist strategy, making phenotypic plasticity
the main driver of invasion success. To distinguish between these
hypotheses, we performed a field common garden and tested for genetically
based phenotypic differentiation, resource allocation shifts in response
to water limitation, and local adaptation to the environmental gradient
which describes the source locations for native and invasive populations
of diffuse knapweed (Centaurea diffusa). Plants were grown in an
experimental field in France (naturalized range) under water addition and
limitation conditions. After accounting for phenotypic variation arising
from environmental differences among collection locations, we found
evidence of genetic variation between the invasive and native populations
for most morphological and life-history traits under study. Invasive C.
diffusa populations produced larger, later maturing, and therefore
potentially fitter individuals than native populations. Evidence for local
adaptation along a resource allocation trade-off for water limitation
tolerance is equivocal. However, native populations do show evidence of
local adaptation to an environmental gradient, a relationship which is
typically not observed in the invaded range. Broader analysis of the
climatic niche inhabited by the species in both ranges suggests that the
physiological tolerances of C. diffusa may have expanded in the invaded
range. This observation could be due to selection for plastic,
“general-purpose” genotypes with broad environmental tolerances.
Bioclimatic data C. diffusa experimental populationsGeographic and
climatic information for 14 sampled populations of native and invasive
Centaurea diffusa (diffuse knapweed). Also, first three principal
components from an analysis of this data.FrbioclimPCA_DKdat.txtPlanting
information C. diffusa experimental plantsPlanting information for
experimental Centaurea diffusa plantsFrdes.txtOccurrence records C.
diffusaRecords of Centaurea diffusa in Europe and North America, from
GBIF.org, downloaded January 9, 2015Cdif_GBIF_allocc.txtLocation
information for collected C. diffusa populationsLocation and collection
information for populations of native and invasive Centaurea diffusa
(diffuse knapweed) used in the experimental PCA and occurrence
PCA.Popcoord.txtAdjusted location information for collected C. diffusa
populationsAdjusted location and collection information for populations of
native and invasive Centaurea diffusa (diffuse knapweed) used in the
experimental PCA and occurrence PCA.Popcoord_worldclim.txtBioclimatic data
for C. diffusa occurrencesBioclimatic data and PCA values for occurrence
records of Centaurea diffusa Geographic and climatic information for 662
occurrence records of native and invasive Centaurea diffusa (diffuse
knapweed) from North America and Europe. Occurrence records include
records from GBIF.org as well as collected
populations.Cdif_allocc_bioclimPCA.txtTrait data at harvest, from C.
diffusa common gardenTrait data for experimental populations of Centaurea
diffusa, measured at harvest. Trait values measured in common field
experiment in Montpellier, France, 2011. File also include the first three
principal components from the experimental PCA of the bioclimatic data for
these populations.FrTraitClimDat_cline.txtPhenological trait data, from C.
diffusa common gardenPhenological trait data for experimental populations
of Centaurea diffusa, measured throughout experiment Trait values measured
in common field experiment in Montpellier, France, 2011. File also include
the first three principal components from the experimental PCA of the
bioclimatic data for these populations.FrEnd_cline.txtRepeated measures of
traits, from C. diffusa common gardenTrait data for experimental
populations of Centaurea diffusa, repeated measures. Trait values measured
in common field experiment in Montpellier, France, 2011. File also include
the first three principal components from the experimental PCA of the
bioclimatic data for these
populations.FrTraitClimDat_cline_long.txtFranceCG - codeGithub repository
storing R scripts used in this paper.
Northern Hemisphere