UNE-EN ISO 18311:2018

This International Standard specifies a technique for determining the effects of anthropogenic impacts(e.g. substances) in the context of the prevailing environmental conditions on the feeding activity of soilorganisms in the field. In addition, the use of this method for monitoring the biological quality of soil isdescribed (see Annex A). The breakdown of organic matter by soil invertebrates and microorganismsis a crucial process that determines important soil functions such as nutrient availability for plants andthe maintenance of soil fertility.In addition, decomposing plant litter provides habitats and food for awide range of organisms, thus supporting biodiversity and ecosystem services [33][34].This International Standard is applicable to all soils in which soil organisms are active. The use of thebait-lamina test is independent from whether there is a litter layer or not. The sampling design of fieldstudies in general is specified in ISO 23611-6 (see also Reference [20]). The design can vary accordingto the aim of the study as well as conditions (e.g. soil properties, contamination, etc.) of the site to beinvestigated.This International Standard is not applicable for semi-terrestrial or very shallow soils. It can be difficultto use it under extreme climatic or geographical conditions (e.g. in high mountains).