ピレネー山地,亜高山帯における穿孔動物によるマウンドの形成 : III:ラトゥレット山,オビスク山,ソセドゥ山における斜面方位別の観察

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Mounds of burrowing animals such as moles, voles, etc. were observed in 1995 at the summital areas of La Tourette (2328m a.s.l.), Turon de l'Ausetch Loung (1747m a.s.l.), Turon de Saucede (1571m a.s.l.), located in the subalpine zone of the central part of the Pyrenees, France. These areas, being different to some degree in summit altitude, were selected in view of comparison with the result of Le Serre mountains (2017m a.s.l.) (Chinen, 2001, 2002). Size and distribution of mounds along the transects ca.150〜300m long and ca.10m wide on north-facing, east-facing, south-facing, and west-facing slopes at the three summital areas are described in the present paper. Geomorphic effects and geomorphological significance of the mound building (bioturbation and redistribution of earth materials) by burrowing animals will be discussed elsewhere.
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