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Ecology     The science that studies the interrelationships, distribution, abundance, and contexts of all organsims and their interconnections with their living (biotic) and nonliving (abiotic) environment, in addition to the processes that determine ecosystem function, change over time, and response to disturbances. Ecology takes two main forms: (1) systems ecology, which relies heavily on computer modelling and inventory data; and (2) field ecology, which studies organisms and communities in their natural settings.     Back to top       Edger     Lumber cut on circular or band headrigs from the outside portions of logs does not have square edges. These pieces must be passed through a machine called an edger that can make two or more lineal cuts simultaneously. The edgings are chipped for use in generating power or for use in paper production. Square-edged lumber must be trimmed to length.     Back to top       Engineered Wood Products     A composite wood product using glued fiber, lumber and/or veneer to meet specific design criteria. Such products include laminated veneer lumber (LVL), parallel strand lumber (PSL), and structural I-beams. Products under development include various molded, extruded, and other structural and non-structural composites. Although engineerred wood products have a number of advantages over solid lumber (including the ability to make large-sized members from small diameter trees), engineered wood products are more costly to produce than lumber and require the use of more energy to manufacture.     Back to top       ESLP     Englemann Spruce Large Pole pine     Back to top       For Further Information Please contact our knowledgable staff