Ions enter wetlands from diffuse catchment (via over-land surface flow (local watershed), in overbank flow or groundwater) or directly from point sources
Mining activities (e.g. gas and oil extraction from underground), dryland salinity and sea-level rise are all potential causes of a change to wetland conductivity
Pressure (Source) indicators Pressure indicator:% of catchment affected by dryland salinity Pressure indicator:% of catchment under mining land use
Pressure (Direct) indicators Currently under investigation
Last updated: 21 February 2012
— Department of Environment and Resource Management