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A fuzzy logic expert system for evaluating policy progress towards sustainability goals

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Abstract

Evaluating progress towards environmental sustainability goals can be difficult due to a lack of measurable benchmarks and insufficient or uncertain data. Marine settings are particularly challenging, as stakeholders and objectives tend to be less well defined and ecosystem components have high natural variability and are difficult to observe directly. Fuzzy logic expert systems are useful analytical frameworks to evaluate such systems, and we develop such a model here to formally evaluate progress towards sustainability targets based on diverse sets of indicators. Evaluation criteria include recent (since policy enactment) and historical (from earliest known state) change, type of indicators (state, benefit, pressure, response), time span and spatial scope, and the suitability of an indicator in reflecting progress toward a specific objective. A key aspect of the framework is that all assumptions are transparent and modifiable to fit different social and ecological contexts. We test the method by evaluating progress towards four Aichi Biodiversity Targets in Canadian oceans, including quantitative progress scores, information gaps, and the sensitivity of results to model and data assumptions. For Canadian marine systems, national protection plans and biodiversity awareness show good progress, but species and ecosystem states overall do not show strong improvement. Well-defined goals are vital for successful policy implementation, as ambiguity allows for conflicting potential indicators, which in natural systems increases uncertainty in progress evaluations. Importantly, our framework can be easily adapted to assess progress towards policy goals with different themes, globally or in specific regions.

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Acknowledgements

This is a product of the OceanCanada Partnership, funded by the Social Sciences and Humanities Research Council of Canada, and the Nippon Foundation Nereus Program, a collaborative initiative by the Nippon Foundation and partners including the University of British Columbia.

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  1. Institute for the Oceans and Fisheries, The University of British Columbia, 2202, Main Mall, Vancouver, BC, V6T 1Z4, Canada

    Andrés M. Cisneros-Montemayor, Gerald G. Singh & William W. L. Cheung

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  1. Andrés M. Cisneros-Montemayor
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  2. Gerald G. Singh
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  3. William W. L. Cheung
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Correspondence to Andrés M. Cisneros-Montemayor.

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Cisneros-Montemayor, A.M., Singh, G.G. & Cheung, W.W.L. A fuzzy logic expert system for evaluating policy progress towards sustainability goals. Ambio 47, 595–607 (2018). https://doi.org/10.1007/s13280-017-0998-3

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