The Vertical Distribution of Ciliophora and Nematoda in the Sediments of Loch Leven, Kinross

Synopsis The species composition of ciliates and nematodes in the mud of Loch Leven was investigated: 59 species of Ciliophora and 14 species of Nematoda were recorded. The ciliate species composition varied widely throughout the 11-month sampling period, whereas that of the nematodes was more constant. The vertical distribution of ciliates and nematodes at four sites is described and related to the findings of other workers. Two distinct patterns of vertical distribution occurred, one typical of ciliates, the other of nematodes.