Influence of a calcium amendment on nematode populations and the mesofauna in the forests of the Normandie-Maine Natural Regional Park.

摘要

The impact of a calcium amendment on edaphic populations (nematodes, mesofauna) was monitored in four forests in the Normandie-Maine Natural Regional Park (1999-2003). The impact is visible in the results that are staggered according to the development of the vegetation and the fertility of the humus. The site distribution on graphs, the differential pathways of populations and the behaviour of major functional groups underscore the rapid improvement in environmental conditions at Sille-Andaines (clear cut) along with altered decomposition of organic matter. A tendency to improve did not appear until five years later at Ecouves-Perseigne that is still forested, but not enough to alter the process of decomposition. The authors discuss the convergencies between these results and the improvements achieved by various silvicultural treatments, with a view to sustainable forest management.