Hydrogeology and vulnerability of limited extension fissured rocks islands

Abstract

The fissured rocks present their own hydrogeologic characters, maintained in the field of Ecohydrology. Furthermore, the relation between the geological abiotic environment and the living organisms represent a continuous and strong interaction. The fissured rocks represent a homogeneous and anisotropic media, while the density and magnitude of the discontinuities allow their consideration as porous or karstic media. Regarding the vulnerability assessment and risk mapping the occurred particularities derive from the internal structure of the media. Those particularities concern the groundwater alimentation, discharge protection and management, as well as the pollutants transportation and confrontation. The internal structure of the media (discontinuities characteristics) is accomplished by the hydraulic connection with special geoforms such as wetlands, floodplains etc.