dry needles of a pine tree in the forest. disease of coniferous trees

tree pine nature wood forest green plant natural insect disease fauna infection spruce bark coniferous branch pest conifer environmental forestry deforestation needles scale spores dying damage parasite bug ornithology insects arachnid araneus mites psocids dry monophlebid pesticide pineus cembrae aphidomorpha infested pests plaque selective focus sick ill mycosphaerella injury drying parasites problem trees forest