10.5061/DRYAD.3BK3J9KHN
Simpson, Kimberley
0000-0001-6673-227X
University of Sheffield
Jardine, Emma
University of Sheffield
Archibald, Sally
University of the Witwatersrand
Forrestel, Elizabeth
University of California, Davis
Lehmann, Caroline
Royal Botanic Garden Edinburgh
Thomas, Gavin
University of Sheffield
Osborne, Colin
University of Sheffield
Resprouting grasses are associated with less frequent fire than seeders
Dryad
dataset
2020
Natural Environment Research Council
https://ror.org/02b5d8509
1371737
2020-11-06T00:00:00Z
2020-11-06T00:00:00Z
en
243148 bytes
2
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Plant populations persist under recurrent fire via resprouting from
surviving tissues (resprouters) or seedling recruitment (seeders). Woody
species are inherently slow-maturing, meaning that seeders are confined to
infrequent fire regimes. However, for grasses, which mature faster, the
relationships between persistence strategy and fire regime remains
unknown. Globally, we analysed associations between fire regimes
experienced by hundreds of grass species and their persistence strategy,
within a phylogenetic context. We also tested whether persistence
strategies are associated with morphological and physiological traits.
Resprouters were associated with less frequent fire than seeders. Whilst
modal fire frequencies were similar (fire return interval of 4-6 years),
seeders were restricted to regions with more frequent fire than
resprouters, suggesting that greater competition with long-lived
resprouters restricts seeder recruitment and survival when fire is rare.
Resprouting was associated with lower leaf N, higher C/N ratios and the
presence of below-ground buds, but was unrelated to photosynthetic
pathway. Differences between the life histories of grasses and woody
species lead to a contrasting prevalence of seeders and resprouters in
relation to fire frequency. Rapid sexual maturation in grasses means that
seeder distributions, relative to fire regime, are determined by
competitive ability and recruitment, rather than time to reproductive
maturity.
Description of files plant_traits.csv: species level values for plant
traits. Columns: Column name Description of data species Species latin
binomial resprouter Resprouting ability after fire (from literature review
- see resprouting_ability file to see information sources used in this
classification). photosynthetic.pathway Photosynthetic pathway used
life.history Life history bud.position Where a species resprouts from.
C=crown resprouter (caespitose species without rhizomes or stolons),
R=rhizomatous species; S=stoloniferous species dim.1 Dimension 1 values
from a principal components analysis of leaf traits (specific leaf area,
leaf N content, leaf C:N from Jardine et al 2020) dim.2 Dimension 2 values
from a principal components analysis of leaf traits (specific leaf area,
leaf N content, leaf C:N from Jardine et al 2020)
resprouting_ability.xlsx: Species-level data on the ability to resprout
after fire, including the sources where data was collected from. Columns:
Column name Description of data Species name Latin binomial Family
'Poaceae' for all Resprouter Resprouting ability after fire:
yes/no Location Geographic area where study is based Synonyms Citation
code Shorthand of informations source (these correspond to the full
citations given in the 2nd tab) Poaceae.phylogeny.MCC.concise.tre:
Phylogeny fire_drought_data.csv: species level values for fire frequency,
fire intensity and drought. Columns: Column name Description of data
species Latin binomial median_FRI_years species median fire return
interval (in years) prop_burnt proportion of records per species that
occur in pixels that burnt at least once in during the MODIS dataset
q95_FRP_MW 95th percentile of fire radiative power (in MW) mean_drought
Example script for DRYAD.R: An example R code to extract and clean
occurrence data, extract fire characteristic data, and carry out
the phylogenetic logistic regression