Under the influence of the environment, there are species that disappear, but new species are also added. “You can read how much ammonia is in the air from the large yolk moss. It is a strong ammonia indicator. It therefore depends on the tree species which conclusions you can draw exactly, because the yolk moss does not grow equally well on every tree species” , says Cook. “On the row of trees in Leusden there is now a lot of green tree shield moss, a heat-loving species that only made its appearance around 1990 and is now found everywhere in the Netherlands. On the Stompert near Soest, a military training area and nature reserve, a lot of ammonia dish crust grows, a species that I I myself found it new in the 90s and described it new to science. Now it even grows in my garden! It belongs to the group of saucer crusts and within that group it is the one that loves ammonia.”
Of course Zoëy: we now see these ammonia lovers all over the Netherlands
