1987 Wetland Delineation Manual - The Wetlands Regulation Center

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Wetland Delination Manual, 1987 86 Range - As used herein, the geographical area in which a plant species is known to occur. Redox potential - A measure of the tendency of a system to donate or accept electrons, which is governed by the nature and proportions of the oxidizing and reducing substances contained in the system. Reducing environment - An environment conducive to the removal of oxygen and chemical reduction of ions in the soils. Relative density - A quantitative descriptor, expressed as a percent, of the relative number of individuals of a species in an area; it is calculated by Number of individuals of species A X 100 Total number of individuals of all species Relative dominance - A quantitative descriptor, expressed as a percent, of the relative size or cover of individuals of a species in an area; it is calculated by Amount* of species A X 100 Total amount of all species *The amount of a species may be based on percent areal cover, basal area, or height. Relative frequency - A quantitative descriptor, expressed as a percent, of the relative distribution of individuals of a species in an area; it is calculated by Frequency of species A X 100 Total frequency of all species Relief - The change in elevation of a land surface between two points; collectively, the configuration of the earth's surface, including such features as hills and valleys. Reproductive adaptation - A feature of the reproductive mechanism of a species that results in it being better fitted to its environment (e.g. ability for seed germination under water). Respiration - The sum total of metabolic processes associated with conversion of stored (chemical) energy into kinetic (physical) energy for use by an organism. Rhizosphere - The zone of soil in which interactions between living plant roots and microorganisms occur. Root zone - The portion of a soil profile in which plant roots occur. 25 February 1997 Environmental Techncal Services Co. 834 Castle Ridge Rd Austin, Texas 78746
Wetland Delination Manual, 1987 87 Routine wetland determination - A type of wetland determination in which office dat and/or relatively simple, rapidly applied onsite methods are employed to determine whether or not an area is a wetland. Most wetland determinations are of this type, which usually does not require collection of quantitative data. Sample plot - An area of land used for measuring or observing existing conditions. Sapling/shrub - A layer of vegetation composed of woody plants
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1987 Wetland Delineation Manual - The Wetlands Regulation Center

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