DOI: 10.5061/dryad.1zcrjdfwr
title: Body-size-dependent effects of landscape-level resource energetics on pollinator abundance in woodland remnants

description: Land use change reduces floral resource availability, thereby driving
 declines in important pollinators. However, the severity of land use
 impact varies by species, influenced by factors such as dispersal ability
 and resource specialization, both of which can correlate with body size.
 Here we test whether floral resource availability in the surrounding
 landscape (the ‘matrix’) influences bee species’ abundance in isolated
 remnant woodlands, and whether this effect varies with body size. We
 sampled quantitative flower-visitation networks within woodland remnants
 and quantified floral energy resources (nectar and pollen calories)
 available to each bee species both within woodland and the matrix. Bee
 abundance in woodland increased with floral energy resources in the
 surrounding matrix, with strongest effects on larger-bodied species. Our
 findings suggest important but size-dependent effects of declining matrix
 floral resources on the persistence of bees in remnant woodlands,
 highlighting the need to incorporate landscape-level floral resources in
 conservation planning for pollinators in threatened natural
 habitats. 
description: Our study focused on bees (Hymenoptera: Apoidea: Anthophila) and
 their partner plant species. We recorded plant-pollinator interactions
 within remnants in a biodiversity hotspot in southwest Western Australia
 to determine the plant species visited by each bee species and assessed
 bee body size. We estimated floral resource energy (nectar and pollen
 calories) available to bees at the landscape-level (in remnant woodland
 patches and their surrounding mosaic landscape matrix) by directly
 measuring both nectar and pollen resources from flowers of partner plant
 species. Detailed descriptions of the methodology used in this study can
 be found in the article and in Appendix S1 in Supplementary
 Information.
description: Data files are Excel .csv files, analyses code were written in R
 language.
description: # Body-size-dependent effects of landscape-level resource energetics on
 pollinator abundance in woodland remnants
 [https://doi.org/10.5061/dryad.1zcrjdfwr](https://doi.org/10.5061/dryad.1zcrjdfwr) Description of the data and file structure **Plant-pollinator networks data (beenet.csv)** Description: This csv file contains the full dataset of plant-pollinator networks depicting 56 plant species and 53 bee species. Network links between bee and partner plant pecies were recorded in 23 fragments of banksia woodlands in the Swan Coastal Plain, Western Australia.\ See the article’s Methods and Supplementary Information for details on data collection and analysis. **Bee body mass data (beeBL.csv)** Description: This csv file contains the full dataset of body lenght (mm) and body mass (as dry mass, mg) for 53 bee species recorded in 23 fragments of banksia woodlands in the Swan Coastal Plain, Western Australia. See the article’s Methods and Supplementary Information for details on estimation of bee body mass. **Flower density data (flower.density.visited.plants.csv)** Description: This csv file contains the flower density data file for the number of flowers of the 56 partner plant species (native and non-native) to bees per unit area of the different land cover types recorded in the study area: banksia woodlands, pine plantations, and cleared land. Flower density surveys in banksia woodlands were carried out in 46 belt transects of 50 m x 4 m, and in belt transects of 30 m × 4 m in pine plantations (7 transects) and cleared land (15 transects). See the article’s Methods and Supplementary Information for details on data collection. **Study sites area data (sites.area.csv)** Description: This csv file contains the study sites area of the sampled 23 fragments of banksia woodlands and their surrounding matrix (1-km buffer radius from the fragment edge) in the Swan Coastal Plain, Western Australia. **Nectar sugars data (nectar.csv)** Description: This csv file contains the full dataset of nectar sugars (fructose, glucose, and sucrose) content of flowers of 60 plant species (native and non-native) common to banksia woodlands in the Swan Coastal Plain, Western Australia obtained through High Pressure Liquid Chromatography analysis (HPLC). See the paper's Methods and Supplementary Information for details on nectar collection and analysis. **Pollen mass data (pollen.flower.csv)** Description: This csv file contains the full dataset of pollen mass (mg) per flower for 43 plant species (native and non-native) common to banksia woodlands in the Swan Coastal Plain, Western Australia. See the article’s Methods and Supplementary Information for details on pollen collection and analysis. **Flower energy resources per flower data (flowerenergy.csv)** Description: This csv file contains the full dataset of energy resources (nectar and pollen) per flower for 54 partner plant species (native and non-native) to bees. Network links between bee and partner plant species were recorded in 23 fragments of banksia woodlands in the Swan Coastal Plain, Western Australia. See the papers' Methods and Supplementary Information for details on data collection and analysis. ## Code/Software R code and raw / processed data used in the analysis are found in a compressed data file at: PRSB.code.processed.data.7z