1. ABOUT THE DATASET ------------ Title: Data from: Diesel exhaust and ozone adversely affect pollinators and parasitoids within flying insect communities Creator(s): James Ryalls (https://orcid.org/0000-0003-2015-3605) Organisation(s): University of Reading Rights-holder(s): University of Reading Publication Year: 2024 Description: 1. Pan_trap_data: These data represent abundances of insects collected from pan traps (2018-2019) within eight Free-Air Diesel and Ozone Enrichment (FADOE) rings located at the University of Reading’s Sonning farm. The periodicity of sampling is indicated by “Date” (Column A) and “Year” (Column B). Pan traps were collected four times per year, indicated by “Run” (Column C). Each ring was assigned a number ("Ring", Column D). Within each year, two FADOE rings were assigned to each of four pollution treatments (“Pollutant”, Column E), comprising diesel exhaust (D), ozone (O3), diesel exhaust and ozone combined (D+O3) and a control treatment (CON; natural air). Triple pan traps, coloured blue, yellow and white (“Trap_Colour”, Column F) were placed in each ring for 72H, after which insects were collected and identified to the lowest taxonomic unit possible. In each year, trapping was undertaken twice when 24 flowering Brassica nigra (black mustard) plants (potted and dug into the ground) were present within the rings and twice when plants/flowers were not present in the rings (“Flowers”, Column G). Insect were identified to Order or Class (“Order_Class”, Column H), “Family” (Column I) or “Genus” (Column J). The lowest taxonomic unit identified was recorded (“Taxon_lowest”, Column K). The abundance of insects within each pan trap per taxa was recorded (“Abundance”, Column L), which were grouped by their mode of feeding (“Feeding_Guild”, Column M). Whether insects were winged or wingless was also recorded (“Wings”, Column N). 2. Oviposition_data: These data represent egg abundances counted on groups of six young potted Brassica napus (oilseed rape) plants (“Plant”, Column A) positioned within the centre of each FADOE ring (“Ring”, Column B). Two rings were assigned to each of four pollutants (“Pollutant”, Column C), as above. The periodicity of sampling is indicated by “Date” (Column D). The experiment was repeated three times per year (“Run”, Column E). The numbers of egg batches (“Batches”, Column F) and eggs (“Number_of_eggs”, Column G) per plant were recorded. Cite as: Ryalls, James (2024): Data from: Diesel exhaust and ozone adversely affect pollinators and parasitoids within flying insect communities. University of Reading. Dataset, doi.org/10.17864/1947.001359. Related publication: Ryalls JMW, Bromfield LM, Mullinger NJ, Langford B, Mofikoya AO, Pfrang C, Nemitz E, Blande JD and Girling RD (2024). Diesel exhaust and ozone adversely affect pollinators and parasitoids within flying insect communities. Science of the Total Environment. https://doi.org/10.1016/j.scitotenv.2024.177802 Contact: James Ryalls, j.ryalls@reading.ac.uk 2. TERMS OF USE ------------ Copyright 2024 University of Reading. This dataset is licensed under a Creative Commons Attribution 4.0 International Licence: https://creativecommons.org/licenses/by/4.0/. 3. PROJECT AND FUNDING INFORMATION ------------ Title: British Ecological Society Large Research Grant (Does air pollution inhibit the recruitment of plant bodyguards?) Leverhulme Trust Early Career Fellowship (The little things that run a polluted world), Natural Environment Research Council Grant (DOMINO: Degradation of Odour signals by air pollution: chemical Mechanisms, plume dynamics and INsect Orientation behaviour) Dates: 2018-2021 Funding organisation: British Ecological Society, Leverhulme Trust, Natural Environment Research Council Grant no.: LRB18/1009, ECF-2020-017, NE/P002404/1 4. CONTENTS ------------ File listing Pan_trap_data (Hypothesis 1) Oviposition data (Hypothesis 2) 5. METHODS ----------- Please see dataset description and publication for details.