The conclusions from our study
What we observed was that wild bees chose to nest in man-made nesting sites, showcasing that creating nesting sites could work as an action for protecting the local wild bee diversity. However, we could not prove that creating nesting sites had different effects if placed in quarry or control areas, there are a number of possible explanations to this that are discussed in our report. Contrary to our initial beliefs we now argue that bee hotels might not be optimal for large scale actions, this based on our own observations and on other studies. We did find that abundance, number of species and the diversity of wild bees were significantly correlated to flower distribution, proving that plant management is an important focus when creating habitats for wild bees in and around quarries. We also managed to develop 35 general guidelines that could hopefully aid in safeguarding wild bees both nationally and globally. With this study we hope that Cementa at Slite, Sweden and HeidelbergCement will have gotten a deeper understanding about wild bees that are living in and near their quarries. For more details we advise you to read our report.