Flower-visitor and pollen-load data provide complementary insight into species and individual network roles

Most animal pollination results from plant-insect interactions, but how we perceive these interactions may differ with the sampling method adopted. The two most common methods are observations of visits by pollinators to plants and observations of pollen loads carried by insects. Each method could favour the detection of different species and interactions, and pollen load observations typically reveal more interactions per individual insect than visit observations. Moreover, while observations concern plant and insect individuals, networks are frequently analysed at the level of species. Although networks constructed using visitation and pollen-load data have occasionally been compared in relatively specialised, bee-dominated systems, it is not known how sampling methodology will affect our perception of how species (and individuals within species) interact in a more generalist system. Here we use a Diptera-dominated high-Arctic plant--insect community to explore how sampling approach s..., See article and Supplemental information for details of data collection and processing., , # Flower-visitor and pollen-load data provide complementary insight into species and individual network roles

## Description of the data and file structure

FV_annual.csv is a weighted list of plant (i) -insect (j) interactions determined by flower visitation, across the whole summer. Interaction weights are the number of individuals of insect j observed visiting flowers of plant i.

PT_annual.csv is a weighted list of plant (i) -insect (j) interactions determined by pollen-load data, across the whole summer. Interaction weights are the total number of pollen grains of plant i observed across all individuals of insect j.

Note that in both cases, weights are unitless counts.