科研之友
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摘要
Two Agroenvironmental Hygienic Pressure Indicators (AEPIs) have been proposed as model-based indicators for the public health risk of surface and ground water contamination by enteropathogens from agroenvironmental sources. Each of these indicators summarises twenty five parameters. The scientific goal of this work was to assess in an ex-ante way the usefulness of these indicators. One of the major reasons why many models and indicators fail to be used is the lack of the necessary data. Hence, the first step of the study assessed the availability of the data necessary for computing the AHPIs for the province of Quebec. Another reason for lack of usage is if the indicators do not meet the needs of the targeted audience. Consequently, this article also demonstrates key aspects of the AHPIs that make them a tool that is likely to be useful for the end-user. The evaluation of the availability and quality of available data for use in the ARPI led to minor modifications to the AHPI original parameters and equations. These modifications are presented. Once modified, adequate data were acquired to compute the indicator for Escherichia coli for surface and groundwater for all livestock farms in the province of Quebec, Canada. Data related to the microbial aspect of the AHPIs such as pathogen presence in livestock, its survival time in storage or on the soil, and its movement with water were the most difficult to obtain. For example, E. coli was used as a general indicator of faecal contamination in the absence of province-wide data on intra-herd contamination by specific human enteropathogens. Maps were generated and interpreted for their biophysical meaning to illustrate how the indicator values could be interpreted by various stakeholders involved in the public health management of water contamination from animal agriculture production and how this could be useful.
- 出版日期2010-1
