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Impacts of livestock grazing on soil physical quality and phosphorus and suspended sediment losses in surface runoff
(Lincoln University, 2010)
Livestock grazing is considered a major contributor in the loss of phosphorus (P) and suspended sediment (SS) from soil in surface runoff, which in turn can have adverse impacts on aquatic ecosystems. Recent and ongoing ...
Eutrophication in coastal New Zealand lakes and the mitigation potential of phosphorus immobilization using clay based amendments
(Lincoln University, 2017-11-14)
Water amendments were analysed in-vitro to identify their potential for phosphate sequestration in coastal lakes and water bodies, in an effort to reduce their phosphorus levels.
The potential amendments were identified: ...
Effect of different irrigation systems on nitrous oxide emissions from urine applied to pasture soil
(Lincoln University, 2017-03-29)
Nitrous oxide (N₂O) is one of the important greenhouse gases (GHGs) that contributes to climate change and depletion of the ozone layer. Nitrous oxide is produced by nitrification and denitrification processes in soils. ...
Potential of manuka and kanuka for the mitigation of nitrous oxide emissions from NZ dairy farms
(Lincoln University, 2012)
Nitrous oxide (N2O) is a greenhouse gas with a global warming potential 298 times that of carbon dioxide. Since pre-industrial times, atmospheric levels of N2O have increased from 270 to 319 ppb. More than a third of ...
Interactions between Escherichia coli and the New Zealand native plants Leptospermum scoparium and Kunzea robusta
(Lincoln University, 2018)
Elevated concentrations of human pathogens in waterways is a global environmental issue and can result in widespread human disease and suffering. The provenance of these pathogens is usually from biological wastes, ...
Tracing critical source areas of phosphorus in grassland catchments
(Lincoln University, 2011)
Grassland farming systems are an important contributor to the New Zealand economy, however recent expansions in dairying have lead to increasing concern about its effects on water quality. Phosphorus (P) and sediment losses ...
Codenitrification under ruminant urine patch conditions: microbial contributions, substrates and nitrogen flux kinetics
(Lincoln University, 2018)
A large fraction of anthropogenic nitrous oxide (N2O) emissions can be traced back to grazed grasslands, where N2O is mainly emitted from livestock-urine affected soils (so called ‘urine patches’). Since N2O is a potent ...
Stable isotopes as indicators of nitrate attenuation across landscapes
(Lincoln University, 2013)
Mitigating the cascade of environmental damage caused by the movement of excess reactive nitrogen (N) from land to sea is currently limited by difficulties in precisely and accurately measuring N fluxes due to variable ...
Nutrient recycling using biowastes from diverse sources
(Lincoln University, 2018)
Phosphorus is a limiting nutrient in crop growth and thus widely used as an agricultural fertiliser. It cannot be substituted by another element, nor newly synthesized. Hence, global food production is ultimately dependent ...
The role of environmental and management factors in the accumulation and plant bioavailability of cadmium in New Zealand agricultural soils
(Lincoln University, 2019)
Cadmium (Cd) accumulation in agricultural soils is a global issue, because its transfer to edible parts of common crop plants can pose a risk to food security. Soil Cd concentrations in NZ agricultural systems have been ...