Neighbourhood effects on tree seedlings differ by mycorrhizal symbiont type in a mixed dipterocarp forest

These data are associated with the manuscript titled, "Neighbourhood effects on tree seedlings differ by mycorrhizal symbiont type in a mixed dipterocarp forest". The shade house experiment and field census of seedlings were conducted between 2021 and 2023 within mixed dipterocarp forests of South-West Sri Lanka in and around the Sinharaja rainforest. fdp_blinded.csv Description: Field seedling census data across three censuses: 2021, 2022 and 2023. Every year between January and April, seedlings' survival status was identified and height and leaf number recorded. Each interval (2021-22 or 2022-23) was treated as a replicate. Variables Status: Survival of the seedling at the end of the experiment (1 - alive, 0 - dead) rgr_rate_htLCround: relative growth rate of height per year: { ln(Height.fin) -- ln(Height.ini) } 1 / (1 year) Conspecific.YN: Seedling is located in a conspecific environment (>=1 conspecific crown, DBH >=10cm) or not (Y or N) Seedling.myco: Mycorrhizal status of the seedling (EcM or AM) Height.ini_sc: initial height, scaled and centered interval: census interval = 2021-22 or 2022-23 (2 levels) PlotID: unique ID recognizing the 1m2 seedling plot where the seedling is located (576 levels) Seedling.sp: Species identity of the seedling Seedling.id: unique ID of the seedling, to account for temporal replicates of the same seedling recorded across 2 intervals Phylodist: average phylogenetic distance between the seedling and all overlapping crowns of trees >=10cm DBH rgr_leaf: relative growth rate of leaves per year: { ln(Leaves.fin) -- ln(Leaves.ini) } (1) / (1 year) Leaves.ini_sc: initial number of leaves, scaled and centered ncrowns_Con: total number of conspecific crowns (DBH >=10cm) overlapping the seedling ncrowns_Het: total number of heterospecific crowns (DBH >=10cm) overlapping the seedling PC1: First principal component of 5 soil abiotic properties PC2: Second principal component of 5 soil abiotic properties spsf.csv Description: Data from the shadehouse plant-soil feedback (PSF) experiment between ~May 2021 and January 2023 Variables Status: Survival of the seedling at the end of the experiment (1 - alive, 0 - dead) Biomass.fin: Final (oven-dried) above-ground biomass of the seedling at the end of the experiment (in grams) Height.fin: Final height of the seedling at the end of the experiment (in cm) Leaves.fin: Final number of leaves at the end of the experiment (count) Conspecific.YN: Whether the soil treatment was a conspecific environment or not (Y or N) Seedling.myco: Mycorrhizal status of the seedling (EcM or AM) Neighbour.sp: Species identity of the soil source Phylodist: Phylogenetic distance (in Mya) between focal seedling and the species that trained the soils Seedling.sp: Species identity of the seedling Block: Block position (1 to 5) within the shade house Height.ini: Initial height of the seedling at the start of the experiment (in cm) Leaves.ini: Initial number of leaves at the start of the experiment (count) Biomass.ini: Initial wet biomass of the seedling (below & above-ground biomass) at the start of the experiment (in gm) PC1: First principal component of 5 soil abiotic properties PC2: Second principal component of 5 soil abiotic properties PH: soil pH N_total_perc: Total nitrogen (%) P_available_ppm: Inoganic phosphorus (ppm) C_to_N: Total Carbon to Nitrogen ratio C_to_P: Total Carbon to Phosphorus ratio Clay_perc: Clay content (%) Sand_perc: Sand content (%) Height.ini_sc: initial height, scaled and centered Leaves.ini_sc: initial number of leaves, scaled and centered rgr_rate: relative growth rate of height per year: { ln(Height.fin) -- ln(Height.ini) } (12) / (# of months) rgr_leaf: relative growth rate of leaves per year: { ln(Leaves.fin) -- ln(Leaves.ini) } (12) / (# of months) rgr_biomass: relative growth rate of biomass per year: { ln(Biomass.fin) -- ln(Biomass.ini) } (12) / (# of months) SoilSource_TreeID: Five individual trees per training species, located in each of the 5 blocks, for all 6 species (30 levels) Neighbour.myco: Mycorrhizal status of the speices training the soil source (EcM or AM) Conmycorrhizal.YN: Whether soil source is trained by a species of the same mycorrhizal (conmycorrhizal) guild (Y) or not (N)