Studies on soil invertebrates in the Tama Forest Science Garden [Tokyo, Japan] , 2: Soil macrofauna in a evergreen natural forest
2008
Niijima, K.(Forestry and Forest Products Research Inst., Hachioji, Tokyo (Japan). Tama Forest Science Garden) | Hashimoto, M.
Soil macrofauna was surveyed in a natural forest of Abies firma Sieb. et Zucc. and Quercus glauca Thunb., Tama Forest Science Garden, Hachioji, Tokyo, Central Japan. Soil animals were collected using the hand sorting method two or three times a year from May 1997 to April 1999. The soil macrofauna communities contained the groups, which had been thought to live only in undisturbed stands, for example, Opilions, Ligidium, Amphipoda, Symphyla, Thysanura etc. The dominant soil animals in number were Oligochaeta (15.6%), Crustacea (15.6%), Chilopoda (14.8 %) and Formicidae (14.2 %). Those in biomass were Oligochaeta (60.2%) and Diplopoda (12.7%). The density of Isopoda, Diplopoda and Chilopoda attained to the maximum in summer. The total density of soil macrofauna tended to increase in summer, though the difference among seasons was not significant. The biomass of soil macrofauna increased in the year, which had much precipitation.
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