ScienceNZ: Freshwater

Overhaul for the National Hydrometric Network

Wed, 08 Oct 2008 00:35:30 GMT

NIWA is managing a nationwide upgrade of the New Zealand's 300-plus lake and river monitoring stations.

Watercress - one step to cleaner waterways?

Wed, 08 Oct 2008 00:30:04 GMT

NIWA scientists have found that watercress may have the potential to absorb nitrate and phosphate from waterways, helping clean up lakes and rivers.

Freshwater fish finder

Mon, 01 Sep 2008 00:22:56 GMT

A new NIWA study answers questions on 'what lives where?' in our freshwater habitats.

Analysing water quality data just got easier

Thu, 21 Aug 2008 03:55:06 GMT

A new software programme for analysing water quality data, ‘Time Trends’, has been released by NIWA.

Doom for Algal Bloom?

Thu, 05 Jun 2008 02:14:02 GMT

An innovative solution to a billion-dollar problem has been successfully trialled by Scion. A modified form of zeolite, a natural volcanic mineral, looks set to be a new tool in the campaign to mitigate the effects of nutrient run-off in New Zealand's lakes and waterways.

Topnet - hydrology at a national scale

Tue, 01 Apr 2008 02:23:00 GMT

NIWA has built a hydrological model of all New Zealand river catchments, a major advance towards understanding national water resources.

NIWA helps Sanctuary in the great perch search

Wed, 26 Mar 2008 02:15:29 GMT

Scientists from NIWA will be using state-of-the-art echosounder technology to get to the bottom of a perch problem that has been plaguing Wellington's conservation safe haven, Karori Sanctuary.

Solving the P problem

Fri, 21 Dec 2007 02:10:45 GMT

NIWA scientists are part of team which is finding ways to reduce the phosphorus problem in lakes.

GNS Science lab ranked top in world

Tue, 18 Dec 2007 00:36:16 GMT

A water dating laboratory operated by GNS Science has come out top in an accuracy test in which 70 water dating laboratories around the world participated.

Getting to grips with native freshwater eels

Tue, 27 Nov 2007 02:59:29 GMT

Our native longfin eels appear to be on the decline, and NIWA scientists are hoping to aide their conservation with innovative population models.

River study to measure health

Sat, 17 Nov 2007 22:22:28 GMT

Southland tangata whenua in partnership with Landcare Research are undertaking a two-and-a-half-year project to gather new information on the Mataura River system.

Water quality data - and it's all free!

Wed, 10 Oct 2007 22:54:49 GMT

Need water quality information? NIWA's freely available Water Quality Information System (WQIS) is a sophisticated, map-based database containing all major water quality parameters from 77 river monitoring sites around New Zealand.

Fish-friendly floodgates ready

Wed, 15 Aug 2007 03:57:56 GMT

A NIWA-led team has designed a new floodgate with many benefits, not least for freshwater fish.

Keeping pest plants at bay

Mon, 16 Jul 2007 00:18:28 GMT

NIWA's research into freshwater pest plants has been expanded.

Christchurch rivers polluted with cancerous toxins

Fri, 29 Jun 2007 03:18:08 GMT

Christchurch rivers contain double the national safety limit of cancer-causing chemicals, a new NIWA study says.

Research builds bridge over troubled water

Mon, 04 Jun 2007 02:03:20 GMT

A new Landcare Research project aims to improve cooperation on water management, and bridge rifts over managing water and other natural resources.

Reducing effects of wallowing

Sat, 25 Nov 2006 20:55:02 GMT

An AgResearch study has found that water quality was poor in unfenced and partially fenced streams where deer could wallow, but it improved after it flowed out of a 6ha area retired from grazing.

Keeping it fresh

Tue, 14 Nov 2006 22:56:57 GMT

A community forum at the upcoming NZ Freshwater Sciences Society conference in Rotorua, sponsored by Ensis will allow the public to hear and questions of New Zealand’s leading lake scientists.