windthrow of trees in a mountainous coniferous forest

abies austria bark beetle calamity change climate coniferous country damage danger deforestation destruction disaster ecology elements extreme fate felling forecast forest forestry harvesting kapfenberg larch logging logs mountain mountainous natural nature occasion picea pine pinus severe silviculture spruce steiermark stem storm styria succession summer sylviculture thunderstorm timber trees weather windbreak windbreaks windfall windfalls windthrow woodland