Jamie Morton, NZ Herald Science Reporter, writes:
What to do about the alarming state of New Zealand's lakes and rivers has predictably dominated the environment space in the run-up to this election.
Anger over our freshwater estate has reached boiling point as report after report has shown a pattern of ongoing degradation in many parts of the country - perhaps nowhere more so than amid the plains of Canterbury - with the dairy industry taking much of the heat.
Kiwis have become all too familiar with concepts like agricultural intensification, nutrients like nitrogen and phosphorus, the risk of bacteria E. coli, and other factors like stormwater run-off, sediment and algal blooms.
Environment groups have called for a cow cull.