Data and code from "Water availability is a stronger driver of soil microbial processing of organic nitrogen than tree species composition"

#### Data description
Data from large scale, long-term tree diversity experiment in southwestern France (ORPHEE), additionally manipulating water contraint. Variables presented are soil nitrogen cycling rates measured using isotope pool dilutions.

Companion paper is found here:

Maxwell TL, Augusto L, Tian Y, Wanek W & Fanin N (2023). Water availability is a stronger driver of soil microbial processing of organic nitrogen than tree species composition. European Journal of Soil Science. https://doi.org/10.1111/ejss.13350

#### Metadata
Soil sampling: July 2020
Maxwell_ShortComm_Data.csv data description

ID: unique identifier per sample
Block: numbered 1-6. Blocks 1,3,6 are control (unirrigated), Blocks, 2,4,5 are irrigated
Plot: numbered plot according to the ORPHEE design. Plot 1 = BP, Plot 5 = PP, Plot 9 = BP_PP
Espece: species ID. BP = pure birch (Betula pendula), PP = pure pine (Pinus pinaster), BP_PP (50% mixed birch-pine)
Rep: sample replicate, 3 replicates per plot
Sample name: long unique identifier per sample. Concatenation of Block, Plot, and Espece
PD: gross protein depolymerization rates (micrograms nitrogen per grams dry soil per day = µg N g-1 d-1)
AAU: gross free amino acid uptake rates (µg N g-1 d-1)
Cmicrobial_ug_g: microbial biomass carbon (µg C g-1)
Nmicrobial_ug_g: microbial biomass nitrogen (µg N g-1)
MRT_FAA_hrs: mean residence time of free amino acids (hours)
FAA_ugN_g: free amino acids (µg N g-1)
Moisture_percent: soil moisture percent (%)
N_nonfumige_ug_g: nitrogen from non fumigated soils, i.e. extractable N (µg N g-1)
C_nonfumige_ug_g: nitrogen from non fumigated soils, i.e. extractableC (µg C g-1)