Drought history effects on plant and soil microbial C dynamics

Data derived from a multi-year drought experiment testing the effect of drought history on the response of plants and soil microbes and their C turnover during and after a further drought by conducting a 13C pulse-chase labelling study. Data were collected in 2011, the experiments were conducted in the Austrian Central Alps on a extnsively managed meadow. All abbreviations used in the excel file can be found in the ReadMe! tab

Appendix A. Litter and microbial C, N and P content as well stoichiometric ratios (mass ratios) of four different beech litters (Achenkirch, Klausenleopoldsdorf, Ossiach, Schottenwald).

Litter and microbial C, N and P content as well stoichiometric ratios (mass ratios) of four different beech litters (Achenkirch, Klausenleopoldsdorf, Ossiach, Schottenwald)

Appendix B. Two-way analysis of variance (ANOVA) for the effect of harvest and litter type on various pool sizes and on mean residence times (MRT) of amino acids, ammonium, nitrate and phosphate during litter decomposition.

Two-way analysis of variance (ANOVA) for the effect of harvest and litter type on various pool sizes and on mean residence times (MRT) of amino acids, ammonium, nitrate and phosphate during litter decomposition

Appendix G. Relationship between litter N:P and microbial N transformation rates across four beech litter types and two harvests (three and six months after inoculation).

Relationship between litter N:P and microbial N transformation rates across four beech litter types and two harvests (three and six months after inoculation)

Appendix F. Effect of harvest and litter stoichiometry (C:N or C:P) on microbial gross processes, analyzed by mixed model analysis of variance using harvest as a fixed factor and litter stoichiometry as a quantitative factor.

Effect of harvest and litter stoichiometry (C:N or C:P) on microbial gross processes, analyzed by mixed model analysis of variance using harvest as a fixed factor and litter stoichiometry as a quantitative factor

Appendix D. Microbial immobilization of 15 amino acids during decomposition of four beech litter types (Achenkirch, Klausenleopoldsdorf, Ossiach, Schottenwald) varying in elemental and stoichiometric quality.

Microbial immobilization of 15 amino acids during decomposition of four beech litter types (Achenkirch, Klausenleopoldsdorf, Ossiach, Schottenwald) varying in elemental and stoichiometric quality

Appendix C. Production of 15 amino acids by protein depolymerization during decomposition of four beech litter types (Achenkirch, Klausenleopoldsdorf, Ossiach, Schottenwald) varying in elemental and stoichiometric quality.

Production of 15 amino acids by protein depolymerization during decomposition of four beech litter types (Achenkirch, Klausenleopoldsdorf, Ossiach, Schottenwald) varying in elemental and stoichiometric quality

Appendix E. Relative contributions of 15 amino acids to the total free amino acid pool (mol-N%) during decomposition of four beech litter types (Achenkirch, Klausenleopoldsdorf, Ossiach, Schottenwald ) varying in elemental and stoichiometric quality.

Relative contributions of 15 amino acids to the total free amino acid pool (mol-N%) during decomposition of four beech litter types (Achenkirch, Klausenleopoldsdorf, Ossiach, Schottenwald ) varying in elemental and stoichiometric quality

Extracellular enzyme activities and enzyme ratios in different horizons in arctic soils.

<p>Left panel: Extracellular enzyme activities for the C-acquiring enzyme cellobiohydrolase (CBH), the N-acquiring enzyme leucine-amino-peptidase (LAP) and the oxidative enzyme phenoloxidase (POX). Right panel: Ratios of the three enzyme activities to each other. Given are the means and standard errors for the individual horizon categories: organic topsoil (O), mineral topsoil (A), mineral subsoil (B), and cryoturbated material (J). Colors indicate different horizon categories: organic topsoil is dark grey, mineral topsoil is light grey, mineral subsoil is white, and cryoturbated material is black. Small letters indicate different statistical groups derived from ANOVA and Tukey-HSD tests.</p

Properties of the microbial community.

<p>Total amount of PLFAs, fungi∶bacteria ratios and statistical results for the first three principal components derived from a PCA with relative abundances of all PLFA biomarkers. Values are mean values (± standard error) over all sites and for each horizon per site. Letters in parentheses indicate significantly different (P<0.05) groups between horizons derived from ANOVA and Tukey-HSD tests.</p