Diferencias en la riqueza genética de hongos y bacterias entre distintos hábitats pascícolas del entorno del macizo de Gorbeia

Abstract

The traditional transtermitant grazing has led to the development of extensive grasslands inGorbeia Natural Park (Northern Atlantic Spain) and surrounding valleys. It is most important toconserve their high biodiversity, which provides important ecosystem services. In this context, one ofthe main objectives of the LIFE-SOILMONTANA project (ref LIFE 10 NAT/ES/579) is to show thesuitability of alternative agronomic practices, which promote ecosystem services provided by thesepastures through the conservation of their biodiversity, especially soil biodiversity. The aim of thisstudy was to compare the genetic diversity of bacteria and fungi in soils of different pasture habitats(bracken, valley grasslands and mountainous grasslands) through the PCR-DGGE technique. Ingeneral, independently of the habitat type, both fungal and bacterial diversity was higher on calcareoussoils, in comparison with siliceous soils. Regarding the effect of habitat type, fungi were more diverse inbracken, while grasslands showed the highest values of bacterial genetic richness.