In this publication we review recent research and understandings of nutrient flows and
losses, and management practices on grazed pastoral farms in New Zealand …

River water quality, particularly in lowland catchments, is a matter of concern to the New
Zealand public. We assessed river water quality and biological state and trends using data …

Over the past two decades there have been major increases in dairy production in New
Zealand. This increase in intensity has required increased use of external inputs, in …

Water is newsworthy: there is, or will be, a world water crisis. Aggravated by climate change,
we are approaching the limits of human exploitation of freshwater resources, notably in …

Measuring the environmental impacts of agricultural practice is critical for policy formulation
and review, including policies implemented to improve water quality. Here, studies that …

Fresh water provides us with considerable natural advantage. It is abundant and supports
our economy, our environment, our recreation and our national identity. There are many …

Water quality in agricultural catchments tends to be worse than in forested (native or exotic)
catchments. Reduced water quality tends to have significant effects on the ecosystem of …

Intensive land use, such as dairying, can impair water quality. Although many guidelines
exist on how to mitigate the loss of dairy-associated contaminants from land to water through …

Subsurface tile drain flows can be a major source of nutrient loss from agricultural
landscapes. This study quantifies flows and nitrogen and phosphorus yields from tile drains …

River water quality is important to uses and values within rivers and also in water bodies
downstream. Water quality here encompasses: the physico-chemical attributes important to …