Dataset DOI: 10.5061/dryad.x3ffbg81z

Description of the data and file structure

We collected data of interactions in 18 communities in 2018 and 2022

Files and variables

File: Pollinator_datafinal.xlsx

Description: for the analyses at the pollinator group level. Pollinator_datafinal.xlsx has three sheets: the first has the species-level network metrics for each pollinator each year (All), the second has the calculated differences (2022-2018) between network metrics averaged for each pollinator group at each study site (diff_metrics_withApis), and the third one contains the same as the previous one but excluding honyebees from the dataset (diff_metrics_withoutApis). Bellow we provide the legend for the variables in each sheet.

Variables: Sheet- All

• Year - Study Year 

• Species - Pollinator species 

• Locality - Study sites 

• Pollinator_Group – Pollinator group (Ants, Bee, Beetles, Butterflies, Flies, Honeybees, Hoverflies, Wasps)

• Sum_of_Interactions – total interaction recorded, used as an estimate of abundance 

• degree  - species’ degree 

• species.strength - species’ strength 

• psi - species’ pollinator service index 

• d_prime - species’ specialization (d’) 

• conttonest - species’ contribution to nestedness 

• closeness_centrality - species’ closeness centrality 

• flower_richness - flower richness at each study site each year 

• flower_abu- flower abundance at each study site each year

  n/a: not available data. These differences could not be calculated because we did not record any fly species in Esporles in 2022 that performed more than 5 visits to flowers.

Variables: Sheets- diff_metrics_withApis & diff_metrics_withoutApis

• Locality - Study sites 
• Pollinator_Group - Pollinator group: Bee, Beetles, and Flies (which includes Flies and Hoverflies). In the sheet ‘diff_metrics_withApis’ honeybees are included within the Bee group, whereas in ‘diff_metrics_withoutApis’ they are not. 
• diff_Sum_of_Interactions – difference in pollinator abundance in the community between 2022 and 2018 
• diff_Richness – difference pollinator richness in the community between 2022 and 2018 
• diff_degree – difference in average degree between 2022 and 2018 per pollinator group and study site
• diff_d_prime – difference in average specialization (d’) between 2022 and 2018 per pollinator group and study site 
• diff_species.strength – difference in average strength between 2022 and 2018 per pollinator group and study site 
• diff_psi – difference in average pollination service index (PSI) between 2022 and 2018 per pollinator group and study site 
• diff_conttonest – difference in average contribution to nestedness between 2022 and 2018 per pollinator group and study site 
• diff_closeness_centrality – difference in average closeness centrality between 2022 and 2018 per pollinator group and study site 
• diff_flower_richness – difference in flower richness in the community between 2022 and 2018 
• diff_flower_abu – difference in flower abundance in the community between 2022 and 2018

File: Pollinator_datatryspecies.xlsx

Description: for the analyses with the pollinator species that appear in both study years. Pollinator_datatryspecies.xlsx has two sheets: the first has the species-level network metrics for each pollinator species that appeared in both years at each study site (Species_in_Both_Years), and the second contains the calculated differences (2022-2018) between network metrics averaged for each pollinator species at each study site (Metric_Differences).

Variables: Sheet - Species_in_Both_Years

• Year - Study Year 
• Species - Pollinator species 
• Locality - Study sites 
• Pollinator_Group – Bee, Beetles, and Flies (which includes Flies and Hoverflies) 
• Sum_of_Interactions – total interaction recorded, used as an estimate of abundance 
• degree  - species’ degree 
• species.strength - species’ strength 
• psi - species’ pollinator service index 
• d_prime - species’ specialization (d’) 
• conttonest - species’ contribution to nestedness 
• closeness_centrality - species’ closeness centrality 
• flower_richness - flower richness at each study site each year 
• flower_abu- flower abundance at each study site each year

Variables: Sheet - Metric_Differences

• Locality - Study sites 
• Pollinator_Group - Pollinator group: Bee, Beetles, and Flies (which includes Flies and Hoverflies) 
• Species - Pollinator species 
• diff_Sum_of_Interactions – difference in pollinator abundance between 2022 and 2018 
• diff_degree – difference in degree between 2022 and 2018 
• diff_species.strength – difference in strength between 2022 and 2018 
• diff_psi – difference in pollination service index (PSI) between 2022 and 2018 
• diff_d_prime – difference in specialization (d’) between 2022 and 2018 
• diff_conttonest – difference in contribution to nestedness between 2022 and 2018 
• diff_closeness_centrality – difference in closeness centrality between 2022 and 2018 
• diff_flower_richness – difference in flower richness in the community between 2022 and 2018 
• diff_flower_abu – difference in flower abundance in the community between 2022 and 2018

Code/software

Excel

Access information

Other publicly accessible locations of the data:

• N/A

Data was derived from the following sources:

• N/A