Iucn Definitions English-French
Updated: 03 May 2021 A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z *A* Abatement. Abatement is the word which is used to denote the result of decreased Greenhouse Gases Emission. This can also be taken as an activity to lessen the effects of Greenhouse Effect. Abiotic (factors). Non-biological (as opposed to biotic), e.g. salinity, currents, light etc. Aboveground biomass. All living biomass above the soil including the stem, stump, branches, bark, seeds and foliage is known as aboveground biomass. Absolute Humidity. The quantity of water vapour in a given volume of air expressed by mass is known as absolute humidity. Absolute Risk. A quantitative or qualitative prediction of the likelihood and significance of a given impact is known as absolute risk. In the Voluntary Carbon Standard (VCS), the level of absolute risk can be calculated using the ‘likelihood × significance’ methodology. The calculated risk can then be converted into a risk classification. Abyss. The sunless deep sea bottom, ocean basins or abyssal plain descending from 2,000m to about 6,000m. Abyssal plain. The extensive, flat, gently sloping or nearly level region of the ocean floor from about 2,000m to 6,000m depth; the upper abyssal plain (2,000–4,000m) is also often referred to as the continental rise. Acceptable risk. The level of potential losses that a society or community considers acceptable given existing social, economic, political, cultural, technical and environmental conditions is known as acceptable risk. It describes the likelihood of an event whose probability of occurrence is small, whose consequences are so slight, or whose benefits (perceived or real) are so great, that individuals or groups in society are willing to take or be subjected to the risk that the event might occur.
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