Name: Estimated Total Oxidised Nitrogen Concentration 2017 (mg/L at 7m bgl)

Display Field: TON

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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

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