A5011942502- Soil and Water Nutrient Dynamics
- Agricultural Economics and Policy
- Soil Geostatistics and Mapping
- Environmental Conservation and Management
- Sustainable Agricultural Systems Analysis
- Rangeland Management and Livestock Ecology
- Agriculture Sustainability and Environmental Impact
- Soil Carbon and Nitrogen Dynamics
- Groundwater flow and contamination studies
- Hydrology and Watershed Management Studies
- Groundwater and Isotope Geochemistry
- Soil erosion and sediment transport
- Rangeland and Wildlife Management
- Remote Sensing in Agriculture
- Land Rights and Reforms
- Geochemistry and Geologic Mapping
- Research Data Management Practices
- Organic Food and Agriculture
- Tree Root and Stability Studies
- Fire effects on ecosystems
- Rural development and sustainability
- Economic and Environmental Valuation
- Landslides and related hazards
- Sustainable Development and Environmental Policy
- Indigenous Knowledge Systems and Agriculture
Manaaki Whenua – Landcare Research
2016-2021
AgResearch
2006-2014
ABSTRACT Shallow landslides occur globally on soil‐mantled hilly and mountainous terrain. In New Zealand, they are a nation‐wide problem, particularly pastoral hill country grazed by livestock. On these landscapes, trees planted at low densities, often <70 stems per hectare (sph), to reduce landslide occurrence, but there has been limited quantification of their effectiveness in this role. This study determined the reduction occurrence 65 sites with spaced (53 × Populus , 6 Salix...
In New Zealand the primary sector together with central and local government agencies have been promoting measures to mitigate adverse effect of farming practices on water quality over last few decades. We assessed effectiveness some key such as stock exclusion, riparian protection, nutrient effluent management reducing losses nitrogen (N), phosphorus (P) sediment water. Our aim was determine how much progress has made in decreasing contaminant discharges between 1995 2015 what loads would...
To meet the water quality outcomes sought by catchment communities and regulators, losses of nitrogen (N), phosphorus (P) sediment from dairy sheep/beef farms must be reduced across many catchments. We conducted a high-level desktop analysis farm typologies established that if mitigation actions were fully implemented farms, N P could have been decreased up to 16 23%, respectively, compared estimated for 2015 (where only partially implemented). Potential decreases greater land (34% 26% P)...
Assessing the effectiveness of mitigation measures for reducing contaminant losses to water from pastoral farming systems is a challenging task. Two important factors that contribute this challenge are (i) considerable spatial variability in landscape vulnerabilities loss and (ii) differing land use pressures created by contrasting management practices employed on farms. An approach described benchmarks nitrogen (N), phosphorus (P) sediment discharges representative dairy sheep-beef types...
Land dedicated to livestock contributes at least 40% of the global agricultural output. While advances in application geospatial information systems and remote sensing technologies offer much agriculture, capturing using that rich spatial biophysical is not a feature available most farm models. In this paper, we tackle gap describing land-based integrated grazing optimisation resource allocation model (AgInform®) departs from use whole average data, integration biological data obtained...
A new generation integrated whole farm planning model ("the model") is introduced. In a departure from the use of and average data for decision making, this integrates multiple land management units (LMUs) within business uses optimisation to identify system design maximise profit under variable production market conditions. The user supplies pasture growth rates, minimum maximum acceptable covers each LMU, animal performance, costs prices. Additions or constraints can be placed on...
Abstract Understanding of the soil resource is pivotal to our ability use, manage and modify soils effectively responsibly. Yet those who make most decisions concerning use management – farmers landholders rarely have access reliable information at scales suitable for farm decision making. By default, many rely on limited local knowledge when making that determine performance environmental impact. Providing detailed nationwide appropriate feasible, as demonstrated by achievements several...
A hydrological framework encompassing nitrogen (N), phosphorus (P) and microbial (E. coli) transfer from land to water was developed provide a consistent rapid approach for assessing the potential impacts of activity on quality in New Zealand. flow partition used route precipitation via surface subsurface pathways water. The included typology-based inventory that estimates annual yields transportable N P land, regional-scale spatial layer attenuates groundwater, literature-based E. coli...
Soil organic carbon (SOC) is a key property of soil quality in arable soils and can play central role the voluntary credit market by improving health, future food security mitigating against climate change. The adoption regenerative agricultural practices are considered one solution to achieve increases SOC sequestration rates. However, spatiotemporal dynamics mean changes attributed management often difficult detect across different spatial scales over short temporal periods. Thus, rapid,...
A risk efficient frontier for a pastoral farm indicates the optimal enterprise mix that allows farmer to generate highest income given level of financial risk. It is calculated by matching available range enterprises (sheep, beef cattle, deer, dairy, exotic forest and indigenous forest) land classes on farm. The quantity environmental emissions produced from varies with along frontier, therefore enables assess consequences moving achieve desired emissions. This study uses databases cover,...