ON THE SAMPLING AND EXTRACTING TECHNIQUE FOR SOIL MICRO-ARTHROPODS

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  • 土壌動物のサンプリングおよび抽出方法について〔英文〕
  • ドジョウ ドウブツ ノ サンプリング オヨビ チュウシュツ ホウホウ ニ ツイテ エイブン

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Abstract

Japanese investigators of soil animals assembled in Minoo, near Osaka, to compare their sampling and extracting techniques with each other. The samples were taken from the same forest stand and brought back to each investigator's laboratory to be treated by his own technique. The results of the discussion on the comparison of each technique are as follows : (1) Unit sampling area should be in concordance with the sizes of the animals. Thus the unit sample area of 25×25cm^2 and 5×5cm^2 was recommended for medium and small sized animals respectively. (2) Sampling depth is also recommended to be a multiple of 2.5cm. (3) Taking samples from a vertical section would prevent soil contamination. (4) Soil sampler as a container would facilitate protection of the samples from damage due to desiccation, pressure and so on during transportation. (5) Extraction should be conducted under rather weak heat and fairly long duration.

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