apocalypse
atmosphere
bark
bark beetle
beetle
biodiversity
brocken
catastrophic
climate change
conifer
coniferous
conservation
damage
dead
death
decline
destruction
dieback
dryness
dying of trees
environment
exhaust gases oxygen
flora
forest
forest dieback
german
germany
green
harz
harz mountains
infestation
juerginho
mortality
mountain pine beetle
nature
outdoor
ozone
pine
plague
protected
reserve
specific disease
spruce
spruce trees
tragedy
tree
vegetation
wilderness
wood
woodland
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