Monocultures are characterized by the fact that only a single crop is grown on the same area over a period of years. For bees, this means a severely limited food supply, as they only have a single source of pollen and nectar at their disposal.

This lack of diversity has a negative impact on their diet and can mean that they are unable to build up a balanced and nutritious winter supply. For honey bees and wild bees in particular, however, a varied pollen diversity is crucial for their health and resilience.

Large-scale monocultures are therefore considered a significant factor in bee mortality, as they significantly deplete the habitat and food base of the animals.