Translated from #1 in 2008 of the magazine of Zuid-Hollands Landschap in the Netherlands, page 13:
Every year, the fungi research group of Voorne island does research on a part of the Duinen van Oostvoorne.
This autumn, mycologist Anneke Hoekstra was surprised by a strong rise in numbers of Hygrocybe mushrooms.
Anneke said: “Already in 2006, we discovered, on a dune meadow near the visitors’ center, a big group of Hygrocybe coccinea.
In 2007, a group of yellow-orange Hygrocybe, butter waxcap, and Hygrocybe pratensis, entered the scene; while Hygrocybe virginea and Hygrocybe russocoriacea were present in big numbers.
Hygrocybe coccinea was present now in five groups.”
Some of those species are on the Red List of threatened fungi.