Beekeepers are very concerned. For years now, they have been losing bee populations due to a mysterious disease which seems to be occurring throughout the world. Since 2006, honey bee populations in the Netherlands have been declining strongly. Around 50% of the hives have died. Beekeepers speak of the colony collapse disorder. "Entire populations enter the winter as healthy insects but when we open the hives in the spring, although there is no noticeable damage there is no bee to be found", according to affected beekeepers.
Up till 2007, the Wadden Islands had not yet been affected with the mysterious disease. But unfortunately in 2008, Schiermonnikoog was the only place still free of major death.
It is still unknown what the cause is of this worldwide problem. Deterioration in nature, increasing population, the lack of variation in the bee genes and the use of herbicides probably contribute to the problem. The bees are also affected by other diseases and plagues, such as the varroa destructor and the Nosema fungus. The colony collapse disorder is most likely caused by a combination of factors, whereby the parasitic fungus and the blood-thirsty mite play a major role.