|| 要旨トップ | 目次 |||日本生態学会第57回全国大会 (2010年3月，東京) 講演要旨|
Flying beetles were collected monthly from May to October 2009 using flight interception window traps at canopy and ground levels from 11 forests with different vegetation. The forests included 3 mature evergreen forests (Camellia japonica, Cryptomeria japonica, Eurya japonica, Quercus spp., Acer sieboldianum, etc.), 2 managed deciduous forests (Quercus spp.) and 6 (3 managed and 3 unmanaged) red-pine (Pinus densiflora) forests. In the “managed” plot, most of the vegetation except the dominant trees were removed with forest bed raking for mushroom cultivation. The results are: (1) a total of 4979 beetles belonging to 64 families and 326 species were collected, (2) in general, unmanaged red-pine plots showed highest number of the individuals, followed by managed deciduous, managed red-pine and evergreen plots. But in term of number of species and alpha diversity index, evergreen plots were higher than managed deciduous, followed by unmanaged and managed red-pine plots. The degrees of the difference varied among the plots and layers, (3) the similarity of beetle species composition was low between canopy and ground samples and among the sampling sites. However, the similarity was high between managed and unmanaged red-pine plots.