A5063227279- Soil and Water Nutrient Dynamics
- Hydrology and Watershed Management Studies
- Soil erosion and sediment transport
- Hydrology and Sediment Transport Processes
- Fish Ecology and Management Studies
- Groundwater and Isotope Geochemistry
- Water Quality and Pollution Assessment
- Ruminant Nutrition and Digestive Physiology
- Soil Carbon and Nitrogen Dynamics
- Photovoltaic Systems and Sustainability
- Flood Risk Assessment and Management
- Extraction and Separation Processes
- Recycling and Waste Management Techniques
- Water Quality Monitoring Technologies
- Fecal contamination and water quality
- Peatlands and Wetlands Ecology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Constructed Wetlands for Wastewater Treatment
- Phosphorus and nutrient management
Beijing Normal University - Hong Kong Baptist University United International College
2019
Beijing Normal University
2019
Hong Kong Baptist University
2019
Xi’an Jiaotong-Liverpool University
2013-2015
National Institute of Water and Atmospheric Research
2008-2013
University of Exeter
2006-2009
Scottish Environment Protection Agency
2006
Abstract Reactive nitrogen (N) is increasingly added to the New Zealand environment because of increased sales N fertilizer and human population. The Greenhouse Gas Inventory now reports in detail on changes for losses from grazing animals 1990 2010. Using animal numbers, we made assessments inputs outputs 16 regions 1990, 2001 2010 assess temporal trends. Fertilizer have 46 Gg 329 2010, which leads reduced biological fixation by pastures. import oil-palm kernel has zero about 28 Total are...
Fine sediment continues to be a major diffuse pollution concern with its multiple effects on aquatic ecosystems. Mass concentrations (and loads) of fine are usually measured and modelled, apparently the assumption that environmental predictable from mass concentrations. However, some severe impacts may not correlate well concentration, notably those related light attenuation by suspended particles. Light per unit concentration particulate matter in waters varies widely particle size, shape...
Storm-induced Escherichia coli pulses in the Motueka River (2074 km2) and Sherry (78.4 are modelled. The model focuses on catchment outlets, representing key processes, including E. transfer to from river bed, with account taken of hysteresis in, non-linear, non-stationary, response concentrations stormflows. fits observations well, but less well River. A greatly simplified description headwater riparian inputs is satisfactory at larger scale where near-field, in-channel processes dominate...
Drainage systems are essential for managing soil water levels, thereby ensuring optimal plant productivity while protecting quality. Although beneficial, drainage also known to be a significant loss route dissolved nutrients. A potential way of reducing nutrient through is use weirs strategically control excess from the profile. This review evaluates scientific literature ascertain whether controlled could useful crop and mitigation tool New Zealand pastoral farming systems. While range...
Abstract. Many river water quality monitoring programmes do not measure suspended particulate matter (SPM) mass concentrations despite significant interest in its multiple effects on aquatic ecosystems. Regular monthly sampling usually intercepts rivers baseflow when sediment and fluxes are relatively low of particular interest. New Zealand’s National Rivers Water Quality Network (NRWQN) is probably typical measuring SPM mass, although visual clarity nephelometric turbidity routinely...
Reduction of visual clarity in streams by diffuse sources fine sediment is a cause water quality impairment New Zealand and internationally. In this paper we introduce the concept load optical cross section (LOCS), which can be used for load-based management light-attenuating substances models that are based on mass accounting. approach, beam attenuation coefficient (units m–1) estimated from inverse m) measured with black disc. This also considered as an (OCS) per volume water, analogous to...
The Sherry River, a tributary of the Motueka River (Tasman District, upper South Island, New Zealand), has somewhat degraded water quality related to high proportion catchment being used for pastoral agriculture (which comprises 30% dairying). We undertook campaign estimate loads phosphorus, nitrogen and Escherichia coli comparison with other dairy-impacted catchments against which measure future reductions in pollutants expected from changed management practices. Monthly sampling was...