|| 要旨トップ | 目次 |||日本生態学会第59回全国大会 (2012年3月，大津) 講演要旨
一般講演（ポスター発表） P3-227A (Poster presentation)
Habitat heterogeneity in flood plain affects the aquatic and terrestrial biodiversity. Previous studies mainly focused on aquatic creatures in various types of flood plain. However, reports on terrestrial creatures particularly their differences in relative height and distance from the river shore were lacking. In 2011, investigations revealed presence of arthropod community in the experimental river in which elevations of terrestrial zones were manipulated in 2003. Ten pitfall bait traps were placed equidistantly in each point designated in the far (a) and near (b) shore lines in the right bank, near (c) and far (d) shore lines in the left bank, grassland line on the step (e) and woodland line on the slope (f). Relative heights of the right and left banks were influenced by high water level (5cm), flood water (25cm), higher grass step and woody slope. Twinspan analysis indicated formation of one endemic assemblage, which constituted marshy species such as wolf spiders (Lycosidae), ground beetles (Bembidiinae) and non-biting midges (Chironomidae), as indicated by 7 traps in line a and all traps in line b. Other traps formed woodland and grassland assemblages. Results suggest that lower terrestrial habitat near the shore area is crucial in the conservation of flood plain terrestrial biodiversity.