– Loss of habitat due to destruction: Due to the further increase in land consumption by humans and the associated changes in landscape structure, bees are finding fewer and fewer places to retreat.
– Intensive agriculture: Monocultures and especially the use of pesticides turn many agricultural landscapes into hostile areas for bees.
– Introduced bee diseases: Parasites and viruses introduced globally by humans – in the case of honey bees, especially the Varroa mite introduced from Asia – are severely affecting the bees.
– Anthropogenic climate change: higher temperatures, droughts, floods, and other extreme climate events and changes in flowering time hinder pollination and lead to starvation and unbalanced diets among bees.
The most important thing is to preserve the habitat! It’s all well and good putting up nesting boxes – if the animals can’t find enough food in the area or are affected by environmental toxins, this approach won’t be successful. In addition, we can only ever target a few, specific species through nesting aids.