Do Farm Management Practices Alter Soil Biodiversity and Ecosystem Function? Implications for Sustainable Land Management

Summary

Maintaining ecosystem functions is a key issue for sustainable farming, while recent reviews (Hole et al, 2005, Fuller et al 2005) have highlighted that a wide range of taxa, including birds and mammals, benefit from organic management of land, there is a need to bring together the evidence for the impact of agricultural management practices on belowground biodiversity. A focus simply on the biodiversity of below-ground species is however not enough and there is a need to consider the contribution of below-ground biological processes to the maintenance and enhancement of a range of ecosystem services. A recent literature review on the impacts of land management practices on soil ecology and function shows clearly that farm management practices do alter below-ground biodiversity and ecosystem function. The data indicate that reducing the intensity of use of mechanical and manufactured inputs and (re)-discovering cost-effective ways to integrate biological inputs, will benefit below–ground biodiversity, particularly in lowland grassland and cropping systems. Benefits are seen from both organic and integrated systems; the evidence base is not strong enough to conclusively distinguish the benefits of these approaches from one another in lowland arable systems