Lurking in the depths of freshwater waterways, all around New Zealand, longfin eels are the most common fish in our rivers. The native longfin eel, at up to 1.6 metres in length, is something to be in awe of, especially when there's a crowd of them – and they aren't the most attractive thing you've ever seen.
‘Whitebait’ tagged as part of a unique experiment have turned up. Earlier this year the giant kōkopu released into the Nukumea Stream in Orewa had disappeared, but when scientists returned in June the fish were back!
Scientists returned to the Nukumea Stream in Orewa in June, to investigate the trial release of giant kōkopu and found that they were back!
What is known about life in the ocean? Even though it’s the biggest habitat on the planet, most of the ocean remains unexplored biologically. So what do we know? And how does New Zealand’s biodiversity compare with the rest of the world?
Scientists returned to the Nukumea Stream in Orewa last week, to investigate the trial release of giant kōkopu. This is the first controlled trial in New Zealand to test whether the native fish, giant kōkopu, can be successfully stocked into a stream.
Last week NIWA scientists carried out electric fishing and night time spotlight surveys, in the stream; capturing and measuring the fish and recording the locations that they were found in.
Environment Canterbury has released two reports by the National Institute of Water and Atmospheric Research (NIWA).
The first report models nutrient loading into Lake Benmore and its associated lakes, the second is a literature review of nitrate toxicity to freshwater species.
Lake Benmore water quality report
Full Report: Lake Benmore Water Quality: a modelling method to assist with assessments of nutrient loadings.
The first report will help Environment Canterbury better understand and manage water quality in the Waitaki lakes in response to land use changes.
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The National Institute of Water & Atmospheric Research (NIWA) has reported to the Whakatane District Council (WDC) on the results of tests into accuracy of the district council’s sunshine recording equipment.