A swirl or twist in the grain of wood that usually occurs near a knot but does not contain a knot.

The layer of cells that lies between the inner bark and the wood of tree, that repeatedly subdivides to form new wood and bark cells.

A continuous cover of branches and foliage formed collectively by the crowns of adjacent trees consisting of one several layers.

A log that has been slabbed on one or more sides.

The release of carbon from a source such as but not limited to living organisms, fossils fuels, and volcanic emissions into the atmosphere over a specified area and period of time.

The result of of any action specifically undertaken to prevent the release of or to remove carbon dioxide from the atmosphere in order to balance emissions taking place elsewhere.

A component of the climate system, other than the atmosphere which has the capacity to store, accumulate or release carbon gas. Oceans, soils, and forest are examples of reservoirs of carbon.

The process of increasing the carbon content of a carbon reservoir other than the atmosphere. Some biological approaches to sequestration include direct removal of carbon dioxide from the atmosphere through land use change, afforestation, reforestation and practices that enhance soil carbon in agriculture. Some physical approaches include separation and disposal of carbon dioxide from flue gases or from processing fossil fuels to produce fractions and long-term storage underground in depleted oil and gas reservoirs, coal seams, and saline aquifers.

A pool or reservoir that absorbs or takes up released carbon from another part of the carbon cycle. For example, if the next exchange between the biosphere and the atmosphere is toward the atmosphere, the biosphere is the source and the atmosphere is the sink.

Any process or activity which releases greenhouse gas, aerosol or a precursor of a greenhouse gas into the atmosphere.

The amount of use an area can sustain for recreation, wildlife, etc., without deteriorating its quality and sustainability.

A condition of stress and set in dry lumber characterized by comprehensive stress in the outer layers and tensile stress in the center or core

A substance, usually present in small amounts relative to the reactants, that modifies the rate of chemical reaction without being consumed in the process.

Any naturally occurring void, cavity, recess or system of interconnected passages beneath the surface of the earth or within a cliff or ledge and which is large enough to permit an individual to enter, whether or not the entrance is located either in private and public land.

A carbohydrate that is the principal constituent of wood and forms the structural framework of wood cells.