MaisLE_ringing

Repository with data, code and manuscript to reproduce results from Rieger, M.R., Heim, W., Kövér, L. and Gottschalk, T.K. (2026) Maize fields as post-breeding habitat for songbirds: influence of landscape structure, field margins, and weed infestation (add link to preprint )

abstract

content

data

/data: This folder contains all necessary data to run the scripts

• /data/shp: shp-files needed for plotting (Borders of Germany and Federal States)
• AVONET1.csv: AVONET dataset used for trait-groups
• dat_mod_decade.csv: Number of individuals (NInd_pd) and individual density (dens_1000hm2) per species, net (netNr), site (site_short) and decade (julian_day)
• dat_mod2_decade.csv: Number of species (nSpec) per net (netNr), site (site_short) and decade (julian_day)
• dat_net_decade.csv: information per net (netNr), site (site_short) and decade (julian_day), including year, distance to field margin (distance_m), landscape covers at several scales, weed infestation in % (prop_weed), height of maize plants (Hoehe_cm) and position (lon, lat)
• dat_site.csv: additional summarized site information including total effort_hm2, trapping duration (dur_h), number of nets (Nnet), height of nets (Hnet_m), length of nets (Lnet_m), area of nets (Anet_m2), number of days with trapping (Ndays), and area_ha of the maize field
• OSM_attributes.csv: OSM attributes used to extract open landscape data
• spec_info.csv: species info concerning traits groups derived from Kamp et al. 2020 and the German Red List

Code

/R: Contains all the R code to run the analysis.

• setup.R: runs the whole analysis. Model output and predictions are saved in /output
• net-based.Rmd: code to run models and make posterior predictions for species and trait-group specific models
• net-based_NSpec.Rmd: code to run models and make posterior predictions for species diversity models
• plots_tables.R: code to produce plots and tables needed for manuscript
• utils.R: helper functions

/Stan: Contains Stan code for the models. Models are saved in /saved models

Manuscript

index.qmd: Manuscript source file.
/graphs: Contains figures used in the manuscript and supplement.