Ref ID : 6625
Georg Sauter and Hans Gude; Influence of grain size on the distribution of tubificid oligochaete species. Hydrobiologia 334:97-101, 1996
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The grain size fraction less than 63 µm is an important environmental factor affecting the distribution and abundance of many of the tubificid species of Lake Constance. In substrates with a heterogeneous grain size where tubificids can be selective many species occur almost exclusively in their particle size preference range, which is highly species specific.