Mike Joy speaks about Water Quality
On Saturday 14th June Mike Joy, one of NZ’s leading fresh water ecologists, spoke to an audience of 80 people in Invercargill about his concerns for the ongoing decline in the state of NZ’s water ways. Land use intensification is seen to be the issue, with conversion to high production dairy farms resulting in a source of nitrates entering our streams and groundwaters which are difficult to manage. The result of these high nutrient levels is increased algal growth, reducing natural flora instream and lowering oxygen levels. He commented that the number of our native fish species in the threatened category has increased from less than 30% to 74% over the last two decades due to loss and degradation of habitat.
Posted on: Tuesday, 17 June 2014