NIWA forecasters say a marine heatwave is forming around parts of New Zealand after sea surface temperatures (SSTs) warmed considerably last month.
Mr Champion says that for the past five to six years NIWA has been working with the Lake Omapere Trustees to find a home for the quillwort in Northland.
Conversely, the lower east coast and the far south (including Hawke’s Bay, coastal Wairarapa and Wellington) saw a soil moisture increase due to rainfall totals above average for the time of year.
However, hotspots remain in place across western Northland and Aupouri Peninsula, a small portion of central Waikato, southern Manawatu-Whanganui, and much of Wairarapa and southern Hawke’s Bay. In the South Island, soil moisture levels generally did not change significantly in the past week.