Vascular_Abundances_Clod: Abundances of Vascular plants in clods
In lucasdeschamps/FRQNT1.Data:

This data set contains different measures of the abundance of the different species in each clod. 3 to 4 clods had been harvested randomly in a grid in each plot. Each individual in these clods had been sorted, counted, each species weighted at the plot level.

1	Vascular_Abundances_Clod

A data frame with 1327 rows and 15 variables:

Parcelle: character Name of the site
Traitement: character Name of the treatment. PA : Polygons slightly drained, PAS : Polygons drained by a secondary ice wedge, PS : polygons close to the shore, submitted to abundant eolian silt deposition, PO : flat to high-center mesic polygons, PR : mesic meadow, 1 : low-centered, wet polygon; 4 : wet polygons fertilized yearly with 1 g.m-2 of NH4NO3; 6 : wet polygons fertilized yearly with 1 g.m-2 of NH4NO3, 10 : wet polygons fertilized yearly with 3 g.m-2 of H3PO4; 14 : wet polygons fertilized yearly with 1 g.m-2 of H3PO4 amd 5 g.m-2 of NH4NO3
Exclos: character Fencing. Exclos : plots protected constantly by a fence; Temoin : unprotected plots
Herbivorie: character Grazing (reformulation of Exclos). Ungrazed : plots protected constantly by a fence; Grazed : unprotected plots
Motte: character Identifiant of the clod

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Motte_enveloppe: double Numerical identifiant of the clod
Sp: character Code of species
Density_ind_m2: double Number of individuals of the species in each clod, scaled to m2
Density_rel: double Number of individuals of species in the clod divided by the total number of individuals in the clod
Biomass_g_m2: double Biomass of the species in each clod, scaled to m2. Computed indirectly by multiplying the mean mass of individuals of the species in the plot by the number of individuals in the clod
Biomass_rel: double Biomass of the species in the clod divided by the total biomass in the clod
Productivity_g_m2: double Biomass of the species in each clod, scaled to m2. Correspond to the biomass created in one year, without potential older woods. Equal biomass in case of herbaceous species. Computed indirectly by multiplying the mean productivity of individuals of the species in the plot by the number of individuals in the clod
Productivity_rel: double Productivity of the species in the clod divided by the total productivity in the clod
LAI_m2_m2: double Total leaf area of species in the clod, scaled to m2. Computed indirectly as mean number of leaves per individual of the species in the plot multpiplied by the mean leaf area of the species in the treatment and the number of individual in the clod
LAI_rel: double LAI of the species in the clod divided by the total LAI in the clod

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Geomorpho: integer A formulation of the Traitement columns focusing on discrete habitat differences
Fertilization_N: integer Specifies the quantity of N added each year in g.m-2 of NH4NO3
Fertilization_P: integer Specifies the quantity of P added each year in g.m-2 of H3PO4
Fertilization: integer A formulation of the Traitement columns with a zero to each unfertilized plots
Fertilization_P_bin: integer Binary variable indicating if the plot receive annual P fertilization