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Ecological Diversity - variety of biological communities or ecosystems in a given area. Ecological Principle - governing principles about natural systems and how they operate (e.g., food chains, predation, water cycle). Ecological Value - the worth of a forest in terms of what it contributes to an ecosystem as a whole. Ecology - the branch of biology that studies relationships between living organisms and the non-living components of the environment in which they live. Economic Value - the worth of forest in financial terms (dollars and cents). Ecosystem - an area that contains organisms (e.g., plants, animals, bacteria) interacting with one another and their non-living environment. Ecosystems can be of any size (e.g., forest, meadow, and log). Ecotone - the transition zone between two adjacent ecological systems. Edge Species - plant or animal species which thrive on the edges of habitats such as a forest which provide them with access to cover and food sources. Examples include: sumac, white-tailed deer, and cowbirds. Educational Value - the worth of a forest in terms of its benefits for teaching and learning. Endangered Species - a species of plant or animal that is in danger of becoming extinct throughout all or in a significant portion of its range. Entire - a type of leaf edge that is smooth and has no wavy or rough edges. Environment - the air, water, soil, and organisms that surround and affect us. Ephemeral - short-lived; completing one life cycle within a brief period. Even-age - a group of trees that are nearly all the same age. Even-age Management - forest management technique used to maintain a forest stand. Evenness - a comparison of the number of individuals of each species in a forest. Evergreen - a tree that bears cones and has needles. Also called coniferous. Exotic Species - a
species that has been introduced from another geographic region to an area
outside its natural range. |