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Name: Estimated Total Oxidised Nitrogen Concentration 2017 (mg/L at 7m bgl)
Display Field: TON
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The map was derived using measured TON data as this was the</SPAN><SPAN /><SPAN>most spatially and temporally complete dataset. In Southland TON and nitrate-nitrogen (NO3-</SPAN><SPAN /><SPAN>N) are generally equivalent and comparable because NO3-N makes up the majority of TON in</SPAN><SPAN /><SPAN>most groundwaters. On this basis TON is used as a proxy for NO3-N concentration. An</SPAN><SPAN /><SPAN>understanding of how concentrations vary across the region is important to </SPAN><SPAN>E</SPAN><SPAN>nvironment</SPAN><SPAN /><SPAN>Southland (ES) because groundwater NO3-N potentially impacts on the supply of potable water</SPAN><SPAN /><SPAN>and on ecosystems.</SPAN><SPAN /></P></DIV></DIV></DIV>
Service Item Id: d5c8c18467ac4299a2781262ac2daf3e
Copyright Text: Ton Snelder
Monique Beyer
Brydon Hughes
Ewen Rodway
Description: <DIV STYLE="text-align:Left;font-size:12pt"><P><SPAN>Please note that this dataset is not perfect and is a work in progress so Environment Southland takes no responsibility for any errors it may contain. </SPAN></P><P><SPAN /></P><P><SPAN>Environment Southland are currently working on a newer version that will replace this layer in the future.</SPAN></P></DIV>