Using critical source areas for targeting cost‐effective best management practices to mitigate phosphorus and sediment transfer at the watershed scale

Strauß, Peter; Leone, Antonio; Ripa, Maria Nicolina; Turpin, Nadine; Lescot, Jean-Marie; Laplana, R.

doi:10.1111/j.1475-2743.2007.00118.x

Cited by 80 publications

(36 citation statements)

References 24 publications

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“…However, given the heterogeneous distribution of Cryptosporidium sources in the catchment ) uniform regulation risks imposing high costs on some landholders with little benefit for water quality (Gunningham and Sinclair 2005;Strauss et al 2007). To minimise this impact, full implementation of regulation such as a mandatory code of practice needs to come last in the sequence.…”

Section: Regulationmentioning

confidence: 99%

Designing a Policy Mix and Sequence for Mitigating Agricultural Non-Point Source Pollution in a Water Supply Catchment

Bryan

Kandulu

2010

Water Resour Manage

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Agricultural non-point source pollution, common in water supply catchments worldwide, can have significant environmental and human health impacts, and its mitigation poses a challenge for policymakers. We used deliberative multi-criteria evaluation (DMCE) to identify a mix and sequence of policy instruments (or policy design) to address agricultural non-point source pollution using a case study of Cryptosporidium contamination in the Myponga River water supply catchment, South Australia. The major impediments to adoption of on-farm water quality management and benefits for ecosystem services were identified using a landholder survey for use as decision criteria in DMCE. The DMCE approach involved stakeholders in policy design during two community fora held in the catchment. We developed six policy scenarios and quantified their impact on decision criteria. The relative importance of decision criteria was quantified using swing weights and consensus was reached on the preferred policy scenario. The mix, sequence, and targeting of instruments in the preferred policy scenario were refined based on information obtained through the deliberative process. Impediments to adoption included a lack of both information/knowledge and financial resources. The recommended policy scenario involved targeted information, followed by an incentive program, and finally the regulation of a mandatory code of practice for water quality management. Detailed, catchmentspecific context obtained through DMCE was critical for refining an effective mix and sequence of policy instruments. The techniques may be readily used to select and schedule policy instruments for effective mitigation of agricultural non-point source pollution in other drinking water supply catchments elsewhere.

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Section: Regulationmentioning

confidence: 99%

Designing a Policy Mix and Sequence for Mitigating Agricultural Non-Point Source Pollution in a Water Supply Catchment

Bryan

Kandulu

2010

Water Resour Manage

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“…While preliminary analysis suggested that on average there is approximately +/-30% error between the 50 th and the 25 th and 75 th percentiles of the FIORIT output this is a first approximation of an FIO risk indexing tool so future adaptation and modification must be encouraged and as with the PI, development will progress with the extension of our knowledge base..We have purposely structured FIORIT so as not to overcomplicate the framework and to allow for a flexible and practical strategy for on-farm microbial vulnerability mapping. Indeed, complexity is not justified if all that is required is a general risk assessment framework for more specific, on farm advice (Strauss et al, 2007) and prioritization of mitigation strategies. However, the next phase is to test FIORIT in different geographical locations beyond the case study catchment and gather more on-farm data to facilitate the widening scope of the tool's capabilities (Scholten et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Development and testing of a risk indexing framework to determine field-scale critical source areas of faecal bacteria on grassland

Oliver¹,

Page²,

Hodgson³

et al. 2010

Environmental Modelling & Software

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2This paper draws on lessons from a UK case study in the management of diffuse microbial pollution from grassland farm systems in the Taw catchment, south west England. We report on the development and preliminary testing of a field-scale faecal indicator organism risk indexing FIORIT was then applied to 162 representative grassland fields through different seasons for ten farms in the case study catchment to determine the distribution of on-farm spatial and temporal risk. The high risk fields made up only a small proportion (1%, 2%, 2% and 3% for winter, spring, summer and autumn, respectively) of the total number of fields assessed (and less than 10% of the total area), but the likelihood of the hydrological connection of high FIO source areas to receiving watercourses makes them a priority for mitigation efforts. The FIORIT provides a preliminary and evolving mechanism through which we can combine risk assessment with risk communication to end-users and provides a framework for prioritising future empirical research.Continued testing of FIORIT across different geographical areas under both low and high flow conditions is now needed to initiate its long term development into a robust indexing tool.

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“…It is reported that N would change from the organic fraction to the inorganic form more easily because of the slow mineralization process [42]. Because of the high solubility and mobility, larger amounts of N in excess of crop requirements would be transported from their sources to the receiving water bodies [22,43]. Comparatively, P would be attached to the sediment and delivered with soil erosion [3].…”

Section: The Spatial Distributions Between Multiple Pollutants and A mentioning

confidence: 98%

Targeting priority management areas for multiple pollutants from non-point sources

Chen¹,

Wei²,

Zhong³

et al. 2014

Journal of Hazardous Materials

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Using critical source areas for targeting cost‐effective best management practices to mitigate phosphorus and sediment transfer at the watershed scale

Abstract: Abstract. The impact of implementing different best management practices (BMPs) at the 1 small watershed scale were examined for the Petzenkirchen catchment in Austria and Lake 2 Vico in Italy, in terms of data needs, hydrological processes, tools and models involved.

Cited by 80 publications

References 24 publications

Designing a Policy Mix and Sequence for Mitigating Agricultural Non-Point Source Pollution in a Water Supply Catchment

Designing a Policy Mix and Sequence for Mitigating Agricultural Non-Point Source Pollution in a Water Supply Catchment

Development and testing of a risk indexing framework to determine field-scale critical source areas of faecal bacteria on grassland

Targeting priority management areas for multiple pollutants from non-point sources

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