Ecology unit 3

Heartwood

The inner layer of wood in a coniferous tree, with low porosity, low carb storage, and stores substances toxic to boring insects and fungal rot.

sapwood

The outer layer of wood in a coniferous tree - produces a viscous sap (hence its name)

Birch, Beech, Maple

trees that rot uniformly

Oak, Locust, American Chestnut

rot resistant trees of New England

American Chestnut

Most rot resistant tree in New England, distinguished by its long, vertical check lines and weathered, light brown wood.

root grafting

When one species roots grow into another and supply carbohydrates to the other plant

sustained yield

The use of forestry management techniques to produce timber on a regular basis.

Frost Crack

a crack in a tree caused by the sun heating up the bark and wood, making it expand. Since the bark contracts faster than the wood once it cools down, the bark cracks around the wood.

Beach bark scale disease/ Nectria Coccinea

A disease in American Beech trees caused by the fungus Nectria Coccinea, transmitted by scale insects.