Mushrooms are declining in number in Dutch woods because of the use of fertilisers, increasing acidity and soil disturbance, according to Meetnet which tracks the threats to landscapes for the agriculture ministry.

Nitrogen-sensitive fungi like the Drumstick Truffleclub and the Dappled Webcap are disappearing, despite the reduction in fertiliser use since 1981, says Monday’s Trouw.
The Netherlands has 3,500 varieties of mushroom and fungus of which 500 are listed as threatened. Nearly 200 varieties have already disappeared.