Modelling Effects Of Secondary Salinisation On Wetland Biodiversity

The clearing of natural vegetation and irrigation for farming have resulted in rises in the level of groundwater. The rising water table brings salt previously stored deep in the soil profile to the surface, leading to secondary salinisation. Whilst many ecosystems are affected by secondary salinisation, wetlands are considered to be particularly vulnerable because of their low-lying position in the landscape where they are likely to be quickly affected by the rising saline water table as well as catchment runoff. Secondary salinisation may induce the regime shift in wetland ecosystems and is one of the greatest threats to our wetlands.