10.5061/DRYAD.F1D03
Onstein, Renske E.
University of Zurich
University of Paris-Sud
Jordan, Gregory J.
University of Tasmania
Sauquet, Hervé
University of Paris-Sud
Weston, Peter H.
University of Zurich
Bouchenak-Khelladi, Yanis
University of Zurich
Wright, Ian J.
University of Zurich
Carpenter, Raymond J.
University of Adelaide
University of Tasmania
Linder, H. Peter
University of Zurich
Data from: Evolutionary radiations of Proteaceae are triggered by the
interaction between traits and climates in open habitats
Dryad
dataset
2017
Grevillea
SLA
Hakea
Banksia
Mediterranean-type Ecosystem
leaf shape
evolutionary radiation
Sclerophylly
Protea
leaf area
2017-06-03T00:00:00Z
2017-06-03T00:00:00Z
en
https://doi.org/10.1111/geb.12481
4137250 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Aim: Ecologically driven diversification can create spectacular diversity
in both species numbers and form. However, the prediction that the match
between intrinsic (e.g. functional trait) and extrinsic (e.g. climatic
niche) variables may lead to evolutionary radiation has not been
critically tested. Here, we test this hypothesis in the Southern
Hemisphere plant family Proteaceae, which shows a spectacular diversity in
open mediterranean shrublands in the Southwest Australian Floristic Region
(SWAFR) and the Cape Floristic Region (CFR). Species in the Proteaceae
family occupy habitats ranging from tropical rain forests to deserts and
are remarkably variable in leaf morphology. Location: Southern Hemisphere.
Methods: We built a phylogenetic tree for 337 Proteaceae species (21% of
the total), representing all main clades, climatic tolerances and
morphologies, and collected leaf functional traits (leaf area,
sclerophylly, leaf shape) for 261 species and climatic niche data for 1645
species. Phylogenetic generalized least squares regression and
quantitative-trait evolutionary model testing were used to investigate the
evolutionary pathways of traits and climatic niches, and their effect on
diversification rates. Results: We found that divergent selection may have
caused lineages in open vegetation types to evolve towards trait and
climatic niche optima distinct from those in closed forests. Furthermore,
we show that the interaction between open habitats, dry, warm and/or
mediterranean climates, and small, sclerophyllous, toothed leaves
increases net diversification rates in Proteaceae. Main conclusions: Our
results suggest that the evolution of specific leaf adaptations may have
allowed Proteaceae to adapt to variable climatic niches and diversify
extensively in open ecosystems such as those in the CFR and SWAFR. This
match between morphology and environment may therefore more generally lead
to evolutionary radiation.
BEAST MCC tree ProteaceaeA time-calibrated phylogenetic tree for
Proteaceae based on sequences for 343 taxa, representing 339 species (337
species plus two subspecies, ~21% of total species), representing 75 out
of the 82 recognized genera (91%), and 4 outgroup species from related
families (Nelumbonaceae, Platanaceae, Buxaceae and Sabiaceae) for five
chloroplast markers (atpB, matK, rbcL, rpl16 intron and trnL-trnF)
downloaded from GenBank (GenBank accession numbers are provided in Onstein
et al. electronic supplementary material, table S3). Details on the
phylogenetic approach, fossils and calibration are given in Onstein et
al.MCC Proteaceae Onstein et alProteaceae alignmentProteaceae alignment
based on sequences for 343 taxa, representing 339 species (337 species
plus two subspecies, ~21% of total species), representing 75 out of the 82
recognized genera (91%), and 4 outgroup species from related families
(Nelumbonaceae, Platanaceae, Buxaceae and Sabiaceae) for five chloroplast
markers (atpB, matK, rbcL, rpl16 intron and trnL-trnF). For details see
Onstein et al.Leaf functional traits and climates for Proteaceae
speciesAverage leaf functional traits, diversification rates (based on
clade-stem ages) and climatic niche variables for Proteaceae species
studied in Onstein et al. 2016 GEB (same as Appendix S2). The excel file
also includes a sheet with the raw data for all Proteaceae species
currently accepted, and a sheet for the results of the herbarium
experiment (i.e. changes in average leaf traits from fresh to herbarium)
as described in Onstein et al. 2016.Appendix S2.xlsx
South America
Cape Floristic Region
Africa
Australia
Southwest Australian Floristic Region