Declining water quality as a result of increased nutrient leaching is a serious and growing concern, both internationally and in New Zealand. Water pollution issues have traditionally been addressed with command-and-control type regulation, but market-based nutrient trading schemes are becoming...

This paper examines six different approaches to nutrient management, and simulates the economic costs and environmental impacts associated with them using NManager, a partial equilibrium simulation model developed by Motu and NIWA, the National Institute for Water and Atmospheric Research. We...

Risk (and often the certainty) of adverse environmental outcomes motivates environmental regulation; other risks also affect welfare outcomes. Economic instruments are one way to reduce environmental risk while maintaining flexibility that helps manage other risks. However regulation not only...

Pastoral farming can result in adverse environmental effects such as nitrogen leaching and greenhouse gas emissions. However, the cost of mitigation and hence the socially appropriate level of tolerance for environmental effects is still unclear. Research to date within New Zealand has either...

Water quality in Lake Rotorua has been declining for at least the last 30 years as increased levels of nutrients have entered the lake. Despite significant effort and expenditure, the level of nutrients entering the lake still exceeds sustainable levels. A nutrient trading system would help the...

This paper provides an overview and early evaluation of the Lake Taupo nitrogen cap and trade programme, established as part of Waikato Regional Council's 2011 Regional Plan Variation Five. The policy establishes a catchment-wide cap on nitrogen losses by allocating farmers individual nitrogen...

Pastoral farming can result in adverse environmental effects such as nitrogen leaching and greenhouse gas emissions. However, the cost of mitigation and hence the socially appropriate level of tolerance for environmental effects is still unclear. Research to date within New Zealand has either...

Declining water quality as a result of increased nutrient leaching is a serious and growing concern, both internationally and in New Zealand. Water pollution issues have traditionally been addressed with command-and-control type regulation, but market-based nutrient trading schemes are becoming...

This paper examines six different approaches to nutrient management, and simulates the economic costs and environmental impacts associated with them using NManager, a partial equilibrium simulation model developed by Motu and NIWA, the National Institute for Water and Atmospheric Research. We...

A nutrient trading system is one mechanism that is currently being considered to control and reduce nutrient loss into Lake Rotorua. However this may not be the best mechanism for controlling nutrient loss from all sources. A more comprehensive system improves efficiency and decreases market...