NIWA is sponsoring Aquatic Science at the interface, a joint conference for the:
The conference is being held in Hamilton, for more information see the Aquatic science at the interface website
After 150 years of research, one might assume that we have a fairly complete picture of the invertebrate communities in New Zealand streams and rivers. However new research suggests that high altitude streams have distinctly different, poorly-known, biological communities.
NIWA scientists are presenting work at three national conferences in the next two months, the New Zealand Coastal Society conference 14th – 16th November, the New Zealand Hydrological Society conference 27th – 30th November and the New Zealand Freshwater Sciences Society conference,3rd – 7th December.
The three month flow map (on the right) shows that much of New Zealand experienced normal or above normal river flow conditions.
Intensive land use increases nutrient runoff to rivers, lakes and estuaries with adverse effects on ecosystems. Determining what combinations of land use and management enable the health and services of these ecosystems to be maintained or restored is a major challenge for councils.
River flows - April to June 2012
The three month picture (on the right) shows the extreme dryness across most of the country, and the after effect of a wet April over East Cape and Hawkes Bay.
River temperatures April to June
Autumn river water temperatures were mostly in the range 8 to 16oC and tended to be slightly higher in the north and at lower altitude.