English Abstract To improve clean-up techniques by landfarming,
lysimeters (4.25*4.25*0.5m) were filled with an oil contaminated sandy soil
obtained from a bus garage site. Soil (in the open air or covered) was
manipulated by raining, fertilizing and seeding. In the half year
observation period the impact of restoration techniques on nematode fauna
was investigated. The lysimeter results were compared with the composition
of nematode fauna in the polluted and in the clean reference soil at the
garage site. The numbers of nematodes in the polluted soil were 20 times
that of the reference soil, and were dominated by Cuticulariaoxycerca. In
the lysimeters bacterial feeders were also dominant at the start, but
decreased with time while carnivorous Odontopharynx longicaudata increased.
At the end of the experiment restoration of nematode fauna was still in
progress: species diversity was 3 times lower than in the reference and
feeding group ratio's were quite different.