Data for Eichenberg et al. 2015: Trade-offs between physical and chemical carbon-based leaf defence: Of intraspecific variation and trait evolution (Journal of Ecology)

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Cite the data as follows:

Eichenberg, D., Bruelheide, H., Ristok, C., and Purschke, O. (2017): Data for Eichenberg et al. 2015: Trade-offs between physical and chemical carbon-based leaf defence: Of intraspecific variation and trait evolution (Journal of Ecology). (Accessed through URL: http://china.befdata.biow.uni-leipzig.de/datasets/490)

Dataset Abstract

1. Despite recent advances in studies on trade-offs between plant defence traits, little is known about whether trade-offs reflect i) evolutionary constraints at the species level or ii) allocation constraints at the individual level. Here, we asked to which degree physical and chemical carbon-based leaf defence traits covary within and across species.
2. We assessed leaf toughness, leaf total phenolics and tannin concentrations for 51 subtropical tree species. Species trait means, sample-specific values and phylogenetically independent contrasts were used in regression analyses. Phylogenetic signals and trait evolution were assessed along the phylogeny.
3. Analyses of species-level trait means revealed significant negative trait covariations between physical and chemical defence traits in analyses over all species. These covariations were inconsistent at the within-species level. All three defence aspects showed strong phylogenetic signals, but differed in the degree of conservatism along the phylogeny. Inclusion of intraspecific trait variability significantly decreased the strength of these covariations. Strong negative covariations were detected between physical and chemical defence trait when phylogenetic non-independence was accounted for.
4. Synthesis: We addressed two sources of variation (allocation and evolution) independently from each other in the context of trait interrelationships. The observed negative covariations hint at the existence of a trade-off between physical and chemical defence traits. The finding that intraspecific trait variation contributed less to this relationship suggests that the trade-off is dominated by evolutionary constraints rather than by carbon allocation constraints.

Dataset Design

See Materials and Methods in the corresponding mansucript.

The attached freeformat files contain the following information:
1. Eichenberg_et_al_2015_JEcol_Cophenetic.csv: the cophenetic distance matrix of all investigated species
2. Eichenberg_et_al_2015_JEcol_phylogenetic_tree.tre: Phylogenetic tree as can be read in and plotted using the R package 'ape"

Spatial Extent

Experimental Sites in Xinganshan (Site A and Site B). Comparative study plots and nearby surroundings in the Gutianshan Natural Nature Reserve.

Published

JEcol-2015-0239.R1
Trade-offs between physical and chemical carbon-based leaf defence: Of intraspecific variation and trait evolution

Taxonomic Extent

We investigated 51 species in the present analyses. The full species List is given in the column "Species" in the Dataset. Moreover, a cophenetic distance matrix as well as a phylogenetic tree (as can be opened by the R-package 'ape') are given as freeformat files.

Data Analysis

See Materials and Methods in the corresponding mansucript.

Freeformat files (2)

Data columns available in the raw data part of this dataset

Species
Scientific name of the investigated species
Data group: Scientific plant species name
Keywords: species, species name, axonomy
Values
Castanea henryi
Camellia chekiangoleosa
Acer davidii
Adinandra millettii
Alniphyllum fortunei
Individual
Identifier that allows to assort the respective sampe to a unique individual
Data group: Helper
Values
CSP13-Ile elm-371506
CSP13-Syz bux-363800
CSP16-Cas eyr-370121
CSP13-Neo aur-372878
CSP13-Mac thu-379635
Indiv_Sample
From every tree 1-10 single leaves were sampled. Theis colums allows to deterine the number of the leaf per individual.
Data group: Helper
Values
10
2
1
14
0
Family
Taxonomic family affiliation of the respective species
Data group: Plant family name
Values
Adoxaceae
Aceraceae
Aquifoliaceae
Anacardiaceae
Apiaceae
Genus
Taxonomic genus affiliation of the respective species
Data group: Plant genus name
Values
Alniphyllum
Adinandra
Camellia
Acer
Castanea
Leaf toughness
Leaf toughness as tensile strength of a excission of the respective leaf
Unit: N/mm
Data group: Leaf toughness
Values
0.06374225
0.078452
0.05393575
0.07354875
0.0686455
Phenolics
Total phenolics content as tannic acid equivalent
Unit: mg/g
Data group: Secondary Metabolites
Values
100.054157
100.201997
100.2379482
100.3091679
100.0626917
Tannin
Tannin content as tannic acid equivalent
Unit: mg/g
Data group: Secondary Metabolites
Values
100.8728877
0.475421937
100.098327
101.0204192
100.1580522