When one has seen my picture from yesterday and read the explaination, it is nice, but also sad, to find out how perfect the nature has done things. Even among plants, eat or be eaten counts and mushrooms do ,their work as the predators of plant's world, destroying and reducing to dust the "weak" subjects.
Here is a birch that was weak and could not fight against a birch killer mushroom. I will post a close view of that mushroom tomorrow.
Note that the main reason for the death of this tree was the fact that is had been struck by thunder and split in 3 parts and thereby weakened. The mushroom will do the rest.