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The challenges of regulating diffuse agricultural pollution to improve water quality: a science policy perspective on approaches to setting enforceable catchment load limits in New Zealand

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dc.contributor.author Duncan, Ronlyn en
dc.date.accessioned 2017-08-11T04:29:18Z
dc.date.issued 2017-05-01 en
dc.identifier.citation Duncan, R. (2017). The challenges of regulating diffuse agricultural pollution to improve water quality: a science policy perspective on approaches to setting enforceable catchment load limits in New Zealand. Case Studies in the Environment, 1-7. doi:10.1525/cse.2017.sc.433549 en
dc.identifier.issn 2473-9510 en
dc.identifier.uri https://hdl.handle.net/10182/8414
dc.description.abstract Worldwide, the cumulative effects of diffuse pollution arising from a range of human activities are diminishing the quality and ecosystem capacity of lakes, rivers, estuaries, and oceans. Devising effective ways to regulate the causes and effects of diffuse pollution is a fraught legal, political, policy, and management challenge given the difficulties in identifying and measuring who is responsible for what, where, and when. In 2011, under its Resource Management Act, 1991, the South Pacific nation of New Zealand introduced national policy to arrest diffuse pollution with a requirement for local government to institute enforceable water quality and quantity limits on all freshwater bodies. The blueprint for these national freshwater policy reforms comes from its South Island region of Canterbury. Canterbury’s regional council has adopted a catchment load approach whereby an overarching limit on nutrient losses from agricultural land is calculated and linked to land use rules to control property-scale agricultural activities. With a focus on the Canterbury region, this case study examines two approaches to establishing a catchment load for diffuse nutrient pollution to link to legal provisions in its regional plan. One is based on a river’s nutrient concentrations and the other relies on predictive modelling. The case study opens important questions about measuring and regulating diffuse pollution and the difficulties faced by policy-makers and regulators in linking numbers to legally binding compliance and enforcement mechanisms, e.g. how to account for lag effects when establishing‘ in-stream’ limits and how to address changes in software when relying on ‘modelled’ limits? en
dc.format.extent 1-7 en
dc.language.iso en en
dc.publisher University of California Press en
dc.relation The original publication is available from - University of California Press - https://doi.org/10.1525/cse.2017.sc.433549 en
dc.relation.uri https://doi.org/10.1525/cse.2017.sc.433549 en
dc.rights © 2017 by the Regents of the University of California. All rights reserved. en
dc.subject diffuse pollution en
dc.subject freshwater policy en
dc.subject Canterbury region en
dc.subject agricultural pollution en
dc.subject New Zealand en
dc.title The challenges of regulating diffuse agricultural pollution to improve water quality: a science policy perspective on approaches to setting enforceable catchment load limits in New Zealand en
dc.type Journal Article
lu.contributor.unit Lincoln University en
lu.contributor.unit Faculty of Environment, Society and Design en
lu.contributor.unit Department of Environmental Management en
dc.identifier.doi https://doi.org/10.1525/cse.2017.sc.433549 en
dc.subject.anzsrc 070101 Agricultural Land Management en
dc.subject.anzsrc 050209 Natural Resource Management en
dc.subject.anzsrc 0502 Environmental Science and Management en
dc.relation.isPartOf Case Studies in the Environment en
pubs.organisational-group /LU
pubs.organisational-group /LU/Faculty of Environment, Society and Design
pubs.organisational-group /LU/Faculty of Environment, Society and Design/DEM
pubs.publication-status Published online en
dc.identifier.eissn 2374-538X en


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