Waiology

Happy holidays from Waiology!

Waiology Dec 23, 2013

By Daniel Collins After the recent water quality series, Waiology will be taking a break over the holidays, springing back to action mid-January. Over the course of the year, Waiology published 67 articles and hosted four series – on wetlands, water governance, water quality, and native freshwater fauna. See the archives for the complete list. Based … Read More

Un-muddying the waters: Series conclusion

Waiology Dec 20, 2013

By Daniel Collins After 10 weeks and 26 articles, Waiology’s series on water quality draws to a close. We have heard from 26 different contributors from 10 different organisations. Articles spanned topics from states and trends in observational data to diverse management solutions. There were some glaring omissions, for which I apologise, but not all requests translated into articles … Read More

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Water quality series: What do you think?

Waiology Dec 19, 2013

By Daniel Collins We have almost finished Waiology’s series on water quality, with 25 articles running from the science to solutions. I would now like to take the time to ask what you think about the series and Waiology in general. Please take a few moments to answer the following survey. All 12 questions are optional. It would be … Read More

Better water quality won’t happen overnight … but it must happen

Waiology Dec 18, 2013

By Jenny Webster-Brown If we cannot stop ongoing water quality degradation, and effectively restore degraded water environments, we stand to lose much that we value about New Zealand and our way of life. We will lose recreational opportunities, fisheries and our reputation for primary produce from a “clean” environment. We will lose functioning ecosystems, the ecosystem services they provide … Read More

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How much dairying is too much in terms of water quality?

Waiology Dec 17, 2013

By Daniel Collins On 21 November the Parliamentary Commissioner for the Environment, Jan Wright, released her second report on water quality. It warned that business-as-usual dairy expansion by 2020 would leave our lakes and rivers more degraded than they are now, even with improved mitigation. I’d now like to re-cap what the report concluded, how it got there, … Read More

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Impacts of climate change on water quality

Waiology Dec 16, 2013

By Daniel Collins Climate change goes beyond warmer weather and more extreme floods and droughts. Effects are expected to include changes to the water quality of our rivers and lakes as well. This has implications for the vulnerability and sensitivity of freshwater ecosystems, as well as water quality limit-setting and catchment nutrient management. These issues, and more, were discussed … Read More

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Understanding groundwater quality – why it’s not easy

Waiology Dec 11, 2013

By Chris Daughney and Magali Moreau Groundwater resources are very important for New Zealand. Groundwater supplies about a third of our abstractive water needs and an even greater proportion of the water required by the agricultural sector. There is understandably much concern about groundwater quality, particularly in terms of nitrate. High concentrations of nitrate in groundwater that is used … Read More

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Vague expectations get vague results: Freshwaters need targets

Waiology Dec 09, 2013

By Mike Scarsbrook You’ll have heard this saying before. You may have even used it as an excuse when talking to your boss at the end of the year. It is equally valid in managing our water resources. If we cannot provide clarity on what we are trying to achieve, how can we expect anyone to make effective decisions … Read More

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How does agriculture affect New Zealand’s water quality?

Waiology Dec 05, 2013

By Bob Wilcock About 40% of the land area of New Zealand is in some form of agriculture. Sheep and beef farming are the most extensive (33%) followed by dairy farming at 6%, and the remainder being horticulture and cropping. Based on a large number of comparative land use studies we have a good understanding of how agriculture affects … Read More

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Estuary water quality for ecosystem health and recreation, Christchurch

Waiology Dec 04, 2013

By Lesley Bolton-Ritchie The quality of the water in an estuary influences the health, abundance and survival of the plants and animals that live in or pass through it and the suitability of estuary water for contact recreation. For the plants and animals it is the concentration of toxicants and oxygen in the water that can affect the survival … Read More

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