11 November 2015
Freshwater Update 67 brings you the latest information from our Freshwater & Estuaries centre, including water quality maps and information, as well as river flows.
In this issue
Water quality maps and information, winter 2015
Winter river water temperatures were mostly in the range 4-12C in both islands and a little lower in alpine-fed rivers of South Island.-
River Flows, July - September 2015
By September however many South Island rivers had receded to normal or below, while the North Island remained or became wetter than normal. -
Periphyton monitoring in lowland streams - how to get better and more frequent data
Read about how NIWA is investigating more effective methods of monitoring this important algae. -
Stream macrophytes and ecosystem health
The types and amounts of macrophytes in streams has implications for ecosystem health. This article discusses the current approaches for measurement and management of marophytes. -
Plans to bring Northland lake plant back from the brink
NIWA is working with stakeholders from Lake Ōmāpere to discuss the reintroduction of plants from the Lake — plants that were 'extinct in the wild'.