density impact

Population density and distribution of the New Zealand indigenous earthworm Octochaetus multiporus (Megascolecidae : Oligochaeta) in hill pastures

The distribution of the indigenous New Zealand megascolecid earthworm Octochaetus multiporus (Beddard) in hill pastures of different fertilities in the southern North Island of New Zealand, and the population density throughout a year are described. Octochaetus multiporus was most numerous in soils of low to moderate fertility. High fertility soils had a similar population density to that of an adjacent area of native forest, indicating that the exotic pasture environment can favour Octochaetus multiporus in some circumstances.