This standard specifically addresses methods for sampling and handling free-living nematodes in land soils, which is a prerequisite for using nematodes as a biological guide, such as assessing the suitability of a soil as a habitat for the organism. The standard applies to the microhabitats of all terrestrial organisms in which nematodes occur. The sampling concept for general research is specified in KS I ISO 10381-1. This standard is not applicable to nematodes living in water. Because these nematodes do not pass through the filter. The taxonomy of other groups of soil organisms, such as earthworms, white earthworms and springtails, is covered in other parts of KS I ISO 23611. The nematodes characterized based on the presented procedures are all free-living types of nematodes found in soil. These include nematodes that are externally parasitic and feed on plants, internally parasitic and free-living nematodes, as well as nematodes that do not feed on plants. Inevitably, quantifying root-feeding plant-feeding nematodes requires specific taxonomy. This standard does not address the geological characteristics of sites, which are strongly recommended when sampling soil invertebrates. KS I ISO 10390, KS I ISO 10694, KS I ISO 11272, KS I ISO 11274, KS I ISO 112
KS I ISO 23611-4:2013 history
2018KS I ISO 23611-4-2018 Soil quality－Sampling of soil invertebrates－Part 4：Sampling, extraction and identification of soil-inhabiting nematodes
2013KS I ISO 23611-4:2013 Soil quality-Sampling of soil invertebrates-Part 4:Sampling, extraction and identification of soil-inhabiting nematodes