Optimal elevation for growth and development occurs roughly at 5000 feet, however at these elevations there is competition with other trees such as Norway spruce (Picea abies) or Silver fir (Abies ...

Infested trees showed sharp drops in diameter as they began to dry out. The European spruce bark beetle (Ips typographus) is a bark beetle that primarily causes damage to spruce trees. While the ...

Infested trees showed sharp drops in diameter as they began to dry out. The European spruce bark beetle (Ips typographus) is a bark beetle that primarily causes damage to spruce trees. While the ...