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Term Main definition
beach forest

A narrow strip of woodland along the sandy and gravelly beaches of the seacoast dominated by Terminalia catappa, Casuarina equisetifolia, Barringtonia asiatica, Soneratia caseolaris, Acacia farnesiana and Erythrina orientalis.


Curved wood formed by steaming or boiling the wood and bending it to form.

Biochemical Oxygen Demand

The measure of dissolved oxygen required to biologically decompose organic matter in water.

Synonyms - BOD

Variability among the living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species and of ecosystems;

Synonyms - biological diversity
biological resource

Includes genetic resources, organism or parts thereof, population, or any other biotic component of ecosystem with actual or potential use or value to humanity.


The amount of living matter expressed in terms of weight per unit area or per unit volume of water. It is the total mass of life in an ecosystem at any given time. It is an indicator of the productivity of the ecosystem.


A regional ecosystem with distinct assemblage of vegetation, animals, microbes and physical environment often reflecting a certain climate and soil.


Research, collection, and utilization of biological and genetic resources for purposes of applying the knowledge derived therefrom solely for commercial purposes.

Synonyms - biological prospecting

Any technological application that uses biological systems, living organisms or derivatives thereof, to make or modify products or processes for specific use.

biotic factor

The influence exerted on a habitat by the plant and animal organisms that inhabit an area. Biotic influence includes grazing, tramping, manuring, predation, parasitism, migration and territorial behavior patterns of animals.

bird's eye

Small localized area in wood with the fibers indented and otherwise contorted to form few to many circular or elliptical figures remotely resembling bird's eyes o tangential surface.


In grading lumber, anything marring the appearance of wood.


Bulges on the surface of panel products due to local bond failures.


An area bounded by one-half (1/2) minute of latitude and one-half (1/2) minute of longitude, containing approximately eighty-one hectares (81 has).

Synonyms - meridional block
board foot

A unit of measurement represented by a board 1 inch thick, 12 inches wide, and 12 inches long.

(12 inches = 1 foot)