棚田復元地の水田内のイネ株上におけるクモ類の多様性と個体数

[摘要] References(25)Cited-By(1)The family and species make up of the spider assemblage was studied in terraced paddies located in a small valley (1 ha) in Kanazawa University's “Satoyama area�? (74 ha) in the suburbs of Kanazawa City, Ishikawa Prefecture, Japan. The paddies, which are surrounded with deciduous secondary forests, were abandoned in 1984, but have been restored step by step since 2002. Spider samples were taken from the rice plants in the paddies bimonthly in 2009 (July - September) and 2010 (June - October) with two different methods (the pooter and vacuum methods). A total of 12,229 individuals (adults and nymphs), representing in 58 species belonging to 16 families, were collected during the study period. Tetragnathidae and Lycosidae were among the most dominant families, and Tetragnatha maxillosa (Tetragnathidae) was the most abundant species in the samples. Comparing with the samples collected in the preceding study from 2004 to 2006, the proportion of species which are commonly found in paddy fields managed employing common agricultural practices increased in this study.

[学科分类] 动物科学

[关键词] spider assemblage;クモ類群集;biodiversity;生物多様性;satoyama;里山;terraced paddy;棚田;habitat restoration;環境復元;abundance;個体数;annual change;年次変化