Supplement 1. The data sets used in the paper with detailed descriptions.
File List
Description
1. BiodepthStability.zip contains 11 data files described below. Data files are in ASCII format (tab-delimited text files).
2. BiodepthSpeciesBiomass.txt contains 5802 datapoints with the following variables:
year: variable for year of experiment 1 to 3
site: factor for site with 8 levels: Germany, Portugal, Switzerland, Greece, Ireland, Sweden, Sheffield (UK), Silwood (UK)
block: factor for blocks within each site with 15 levels (A to O), two levels per site except Portugal with one level only
plot: factor to distinguish each plot at each site with 480 levels
sr: variable for sown species richness with levels 1, 2, 3, 4, 8, 11, 12, 14, 16, 18, 32
fr: variable for sown functional richness with levels 1, 2, 3
fgc: factor for functional group composition. g for grass, f for forb and l for legume , levels 1-7, 1=g, 2=f, 3=l, 4=gf, 5=gl, 6=fl, 7=gfl
mix.nest: variable treating same composition from different sites as different "ecotypes", levels 1-235 (fully nested within sites)
mix: variable for identical species compositions, levels 1-200 (partially crossed)
grass,forb,legume: contrasts for functional groups presence in a mixture, levels 0 or 1 (No,Yes)
funct: factor for the three functional groups grasses, forbs and legumes, three levels g, f, l and NA (for community level responses)
GRASS,FORB,LEG: individual functional group contrasts, levels 0 or 1 (No,Yes)
species: factor to distinguish each species, identical Linnean species at different sites are coded as different "ecotype" species, 186 levels, species coding see below
biomass: aboveground biomass in g/m2 on species over the first three years3. BiodepthSpeciesCodes.txt contains:
speciescode: factor to distinguish each species, identical Linnean species at different sites are coded as different "ecotype" species, 186 levels, species coding: First letter stands for functional group (g=grass, h=herb, l=legume) followed by site number (1-8), followed by the first three letters of genus then the first three letters of the specific name and then a number to distinguish any doubles in the data set (non present in this data set)
genus: Linnean genus
species: Linnean species name
4. BiodepthSpeciesNames.txt contains:
abbrevation: the first three letters of genus then the first three letters of the specific name
genus: Linnean genus
species: Linnean species name5. BiodepthBiomass.txt contains:
year: variable for year of experiment 1 to 3
site: factor for site with 8 levels: Germany, Portugal, Switzerland, Greece, Ireland, Sweden, Sheffield (UK), Silwood (UK)
block: factor for blocks within each site with 15 levels (A to O), two levels per site except Portugal with one level only
plot: factor to distinguish each plot at each site with 480 levels
sr: variable for sown species richness with levels 1, 2, 3, 4, 8, 11, 12, 14, 16, 18, 32
fr: variable for sown functional richness with levels 1, 2, 3
fgc: factor for functional group composition. g for grass, f for forb and l for legume , levels 1-7, 1=g, 2=f, 3=l, 4=gf, 5=gl, 6=fl, 7=gfl
mix.nest: variable treating same composition from different sites as different "ecotypes", levels 1-235 (fully nested within sites)
mix: variable for identical species compositions, levels 1-200 (partially crossed)
grass,forb,legume: contrasts for functional groups presence in a mixture, levels 0 or 1 (No,Yes)
funct: factor for the three functional groups grasses, forbs and legumes, three levels g, f, l and NA (for community level responses)
GRASS,FORB,LEG: individual functional group contrasts, levels 0 or 1 (No,Yes)
species: factor to distinguish each species, identical Linnean species at different sites are coded as different "ecotype" species, 187 levels (with NA)
level: factor to distinguish stability measures at the species (Species), functional groups (Group) or mixture (Community) level
biomass: aboveground biomass in g/m2 on species, functional group and community level over the first three years6. TemporalCVs.txt contains:
site: factor for site with 8 levels: Germany, Portugal, Switzerland, Greece, Ireland, Sweden, Sheffield (UK), Silwood (UK)
sr: variable for sown species richness with levels 1, 2, 3, 4, 8, 11, 12, 14, 16, 18, 32
mix.nest: variable treating same composition from different sites as different "ecotypes"
level: factor to distinguish stability measures at the species (Species), functional groups (Group) or mixture (Community) level
tempCV: temporal coefficient of variation (ratio of the standard deviation, σ, to the mean, μ, expressed as percentage) of total aboveground biomass on species, functional group and community level over the first three years
tempSD: standard deviation of total aboveground biomass on species, functional group and community level over the first three years
tempMean: mean of total aboveground biomass on species, functional group and community level over the first three years7. TemporalCVsRandomized.txt contains:
site: factor for site with 8 levels: Germany, Portugal, Switzerland, Greece, Ireland, Sweden, Sheffield (UK), Silwood (UK)
sr: variable for sown species richness with levels 1, 2, 3, 4, 8, 11, 12, 14, 16, 18, 32
mix.nest: variable treating same composition from different sites as different "ecotypes"
level: factor to distinguish stability measures at the species (Species), functional groups (Group) or mixture (Community) level
tempCV: temporal coefficient of variation (ratio of the standard deviation, σ, to the mean, μ, expressed as percentage) of total aboveground biomass on species and community level over the first three years calculated after randomly assigning the two replicate plots of each mixture to either the population CV or the community CV omitting the functional group level.8. SpatialCVs.txt contains:
year: variable for year of experiment 1 to 3
site: factor for site with 8 levels: Germany, Portugal, Switzerland, Greece, Ireland, Sweden, Sheffield (UK), Silwood (UK)
sr: variable for sown species richness with levels 1, 2, 3, 4, 8, 11, 12, 14, 16, 18, 32
mix.nest: variable treating same composition from different sites as different "ecotypes"
level: factor to distinguish stability measures at the species (Species), functional groups (Group) or mixture (Community) level
9. CVandMeanDbar.txt contains:
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