Author: Patrick Shults
Publisher:
ISBN:
Category : Fir
Languages : en
Pages : 5
Book Description
The fir engraver beetle (Scolytus ventralis) can cause significant damage and mortality to conifers in the Abies genus in western Washington. This small insect bores below the bark of trees and feeds on the sugar-rich phloem. In the process, they also cause severe damage to the cambium, the tissue responsible for annual diameter growth. If enough beetles feed on the tree, they will eventually girdle its circumference, cutting off nutrient flow and causing the tree to die. While this beetle is capable of killing trees, in western Washington it behaves as a secondary agent. This means it typically can only establish itself in trees dealing with a preexisting stressor, such as drought or a root disease. When trees are under significant stress, they are less able to defend themselves. Because of this, severe drought conditions in western Washington often correlate with a spike in fir engraver beetle populations. Since climate models predict hotter, drier summers in the coastal northwest, fir engraver damage and mortality may become more commonplace in the years to come.
Fir Engraver Damage in Western Washington
Author: Patrick Shults
Publisher:
ISBN:
Category : Fir
Languages : en
Pages : 5
Book Description
The fir engraver beetle (Scolytus ventralis) can cause significant damage and mortality to conifers in the Abies genus in western Washington. This small insect bores below the bark of trees and feeds on the sugar-rich phloem. In the process, they also cause severe damage to the cambium, the tissue responsible for annual diameter growth. If enough beetles feed on the tree, they will eventually girdle its circumference, cutting off nutrient flow and causing the tree to die. While this beetle is capable of killing trees, in western Washington it behaves as a secondary agent. This means it typically can only establish itself in trees dealing with a preexisting stressor, such as drought or a root disease. When trees are under significant stress, they are less able to defend themselves. Because of this, severe drought conditions in western Washington often correlate with a spike in fir engraver beetle populations. Since climate models predict hotter, drier summers in the coastal northwest, fir engraver damage and mortality may become more commonplace in the years to come.
Publisher:
ISBN:
Category : Fir
Languages : en
Pages : 5
Book Description
The fir engraver beetle (Scolytus ventralis) can cause significant damage and mortality to conifers in the Abies genus in western Washington. This small insect bores below the bark of trees and feeds on the sugar-rich phloem. In the process, they also cause severe damage to the cambium, the tissue responsible for annual diameter growth. If enough beetles feed on the tree, they will eventually girdle its circumference, cutting off nutrient flow and causing the tree to die. While this beetle is capable of killing trees, in western Washington it behaves as a secondary agent. This means it typically can only establish itself in trees dealing with a preexisting stressor, such as drought or a root disease. When trees are under significant stress, they are less able to defend themselves. Because of this, severe drought conditions in western Washington often correlate with a spike in fir engraver beetle populations. Since climate models predict hotter, drier summers in the coastal northwest, fir engraver damage and mortality may become more commonplace in the years to come.
Forest Insect Conditions in the Pacific Northwest
Root Diseases in Oregon and Washington Conifers
Forest Pest Conditions in the Pacific Northwest
Forest Insect Conditions in the United States
Author: United States. Forest Service
Publisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 202
Book Description
Publisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 202
Book Description
Organization and Conduct of Forest Insect Aerial Surveys in Oregon and Washington
Author: J. F. Wear
Publisher:
ISBN:
Category : Aerial surveys in forestry
Languages : en
Pages : 66
Book Description
Publisher:
ISBN:
Category : Aerial surveys in forestry
Languages : en
Pages : 66
Book Description
Forest Insect and Disease Conditions in the United States
Author: United States. Forest Service
Publisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 104
Book Description
Publisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 104
Book Description
Important Forest Pest Outbreaks in Oregon and Washington in 1974
Author: Donald J. Curtis
Publisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 24
Book Description
Publisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 24
Book Description