Bird and hoverfly communities per study sites with corresponding environnemental variables and code used for the models

Sandrine Wider
Université de Neuchâtel

Contact : sandrine.wider@unine.ch

Data collected in spring 2022 and spring 2023
Data collected in the Jura mountains in the canton of neuchâtel

Work financed by the university of Neuchâtel

Files explanation: 

BIRDS

Row data of birds communities per study sites: Birds_22-23_corrected_max.csv : 

R code : Data_Exploration_22-23.R
The code allows 1) to compute diversity indices with Hill number to geneterate the dataset: Birds_Hill_22-23.csv
2) to compute estimated diversity indices at equal sample coverage to generate the dataset :Birds_Hill_Estimates_22-23.csv

Row data of environemental variables per study sites : Study_sites_22-23.csv 

R code : R code : Data_Exploration_22-23.R
The code allows to link bird communities and computed indices of diversity to environmental data, per study sites, to generate the files 
- Birds_EnvVar_22_23.csv
- Bird_EnvVar_Hill_Estimates_22-23.csv
- Birds_Hill_multivariate_22-23.csv

R code : Linear_Models_Birds-Env.Var.Rmd
The code allows to compute linear models between indices of diversity and environemental variables
R code: Multivariate_analysis_Bird_FinalTrial.Rmd
The code allows to compute ordnations models to compare communiy compositions of birds, based on the dataset: Birds_Hill_multivariate_22-23.csv

HOVERFLIES

row data of hoverfly communities per study sites (once with data collected in August, once without data collected in August, as it was only in 2023 that data were collected in August): Syrphs_per_sampling_site_FINAL.csv AND Syrphs_per_sampling_site_withoutAug_FINAL.csv

R code : Data_Exploration_Syrph_SamplingS_22-23.R
The code allows 1) to compute diversity indices with Hill number to geneterate the dataset: Syrph_Hill_22-23.csv AND Syrph_Hill_withoutAug_22-23.csv
2) to compute estimated diversity indices at equal sample coverage to generate the dataset : Syrph_EnvVar_Hill_Estimates_withoutAug_22-23.csv

Row data of environemental variables per sampling point : Sampling_points_syrphs_2022-2023.csv 

R code : R code : Data_Exploration_Syrph_SamplingS_22-23.R
The code allows to link bird communities and computed indices of diversity to environmental data, per study sites, to generate the files 
- Syrph_EnvVar_22-23.csv AND Syrph_withoutAug_EnvVar_22-23.csv
- Syrph_EnvVar_Hill_Estimates_withoutAug_22-23.csv
- Syrph_Hill_withoutAug_multivariate.csv

R code : Linear_Model_Syrph-Envvar_2ndTrial.Rmd
The code allows to compute linear models between indices of diversity and environemental variables
R code: Multivariate analysis-Syrph_EnvVar_SamplingS.Rmd
The code allows to compute ordnations models to compare communiy compositions of birds, based on the dataset: Syrph_Hill_withoutAug_multivariate.csv

Data collection and location information:
Shape file of study sites : Study_sites_22-23 AND Sampling_points_syrphs_2022-2023
Shapefile transects birds : transects_birds
See publication for precise protocol : https://doi.org/10.1007/s10531-025-03066-1