I will perform whole-genome sequencing on Swedish Bombus pascuorum samples from the 1800s to today to gain insight in the effects of anthropogenic activity during the past 150 years on population dynamics. With this fine-scale temporal resolution, I will investigate how certain relevant agricultural transitions, such as the heavy industrialization between 1930 and 1950 or the increased use of agrochemicals between 1950 and 1980, have affected the Swedish B. pascuorum population structure, gene flow patterns and levels of diversity through time.