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                            The earthworms Eisenia foetida and Lumbricus rubellus and unidentified juveniles were recovered from a stable, Sphagnum peat on-site wastewater treatment system studied at Orono, Maine, U.S.A. over a 13 month period. The oligochaetes had a heterogeneous distribution in the filter although they did show a preference for the mid and upper layers. The temperature and pH regimes in the filter did not appear to influence the distribution of the worms.
Key words: peat, oligochaetes, Annelida, wastewater treatment
                        
                
                                            - 
                            Gelder,
                            Department of Biology, University of Maine, Presque Isle, Maine 04769,U.S.A
                                                        Sähköposti:
                                                            ei.tietoa@nn.oo
                                                                                          
- 
                            Brooks,
                            
                                                        Sähköposti:
                                                            ei.tietoa@nn.oo