https://doi.org/10.5061/dryad.ncjsxkt1r

This dataset contains a suite of environmental measurements, decomposition measurements, and community matrices for invertebrate and fungal detritivores. Data were collected at four time points, once pre-rewilding, and three times post-rewilding. We found that rewilding detritivore communities via soil and litter transplants increased the number of invertebrate detritivores, which had cascading effects on decomposition rates.

Description of the data and file structure

The dataset contains various .csv files that link to the code.R file. Within the code.R file, there are lines of codes that detail the analyses of each figure in the manuscript.

Metadata for field sites can be found in the metadata.csv file, which documents geographic location of each site in WGS 84.

The first portion of this code is the analyses of decomposition rates found in Figure 3 of the manuscript. This code is working off the file labelled decomposition.csv.
Columns are labelled as:

• "Site" : Site replicates for each treatment, there are 6 sites within each treatment
• "Treatment" : One of three treatments: "Control", "Rewilding transplant", "Remnant", see manuscript for definitions
• "Distance" : The distance the decomposition measurements were taken from the experimental grid. Either 'Near' (2 m), or 'Far' (10 m)
• "Time" : One of 3 sessions the measurements were taken in: 3 months post-rewilding, 19 months post-rewilding, or 35 months post-rewilding
• "Mass Loss" : The % mass lost from each litter bag after 3 months in the field

The second portion of this code is the analyses of abundance and diversity of invertebrates and fungi found in Figure 4 of the manuscript. This code is working off two files. The first concerns invertebrate detritivores and is labelled invertebrate_detritivores.csv.
Columns are labelled as:

• "Site" : Site replicates for each treatment, there are 6 sites within each treatment
• "Treatment" : One of three treatments: "Control", "Rewilding transplant", "Remnant", see manuscript for definitions
• "Time" : One of 4 sessions the measurements were taken in: Pre-rewilding, 3 months post-rewilding, 19 months post-rewilding, or 35 months post-rewilding
• "Invertebrate abundance" : A count of invertebrate detritivores found at each site
• "Invertebrate richness" : The number of invertebrate detritivore species found at each site.

The second file concerns fungal saprotrophs and is labelled fungal_saprotrophs.csv.
Columns are labelled as:

• "Site" : Site replicates for each treatment, there are 6 sites within each treatment
• "Treatment" : One of three treatments: "Control", "Rewilding transplant", "Remnant", see manuscript for definitions
• "Time" : One of 4 sessions the measurements were taken in: Pre-rewilding, 3 months post-rewilding, 19 months post-rewilding, or 35 months post-rewilding
• "Fungi abundance" : Relative abundance of fungal saprotrophs found at each site
• "Fungi diversity" : Diversity of fungal saprotrophs found at each site.

The third portion of this code is the HMSC analyses of invertebrate morphospecies responses found in Figure 5 of the manuscript. This code is working off four files, each set up in the same manner: community_matrix_prerewilding.csv, community_matrix_3months.csv, community_matrix_19months.csv, community_matrix_35months.csv.
Columns are labelled as:

• "Site" : Site replicates for each treatment, there are 6 sites within each treatment
• "Treatment" : One of three treatments: "Control", "Rewilding transplant", "Remnant", see manuscript for definitions
• "Temperature" : The temperature in Celcius at each site over 3 months
• "Humidity" : The % humidity at each site over 3 months
• Remaining columns are species data

To construct Figure S3, repeat the code above but use the files found in the fungal ASV communities.

The fourth portion of this code is the Structural Equation Modelling analyses found in Figure 6 of the manuscript. This code is working off the sem_data.csv file.
Columns are labelled as:

• "Site" : Site replicates for each treatment, there are 6 sites within each treatment
• "Treatment" : One of three treatments: "Control", "Rewilding transplant", "Remnant", see manuscript for definitions
• "Treatment ordinal" : Treatments as ordinal variables - Control = 1, Rewilding transplant = 2, Remnant = 3.
• "Time" : One of 3 sessions the measurements were taken in: 3 months post-rewilding, 19 months post-rewilding, or 35 months post-rewilding
• "Temp" : The temperature in Celcius at each site over 3 months
• "Humidity" : The % humidity at each site over 3 months
• "Abundance" : The abundance of invertebrate detritivores found at each site
• "Breakdown" : The % mass lost from each litter bag after 3 months in the field
• "Litter cover" : The % of litter cover found at each site
• "sap diversity" : Diversity of fungal saprotrophs found at each site
• "Meso abundance" : Abundance of mesoarthropod detritivores found at each site (only present for 19 months post-rewilding)

Code/Software

The code required for analyses of each section of this manuscript is documented in the R file code.R.