Sammendrag
Numerical models of ecological systems are increasingly used to address complex environmental and resource
management questions. One challenge for scientists, managers, and stakeholders is to appraise how well suited
these models are to answer questions of scientific or societal relevance, that is, to perform, communicate, or
access transparent evaluations of ecological models. While there have been substantial developments to support
standardised descriptions of ecological models, less has been done to standardise and to report model evaluation
practices. We present here a general protocol designed to guide the reporting of model evaluation. The protocol
is organised in three major parts: the objective(s) of the modelling application, the ecological patterns o relevance and the evaluation methodology proper, and is termed the OPE (objectives, patterns, evaluation) protocol. We present the 25 questions of the OPE protocol which address the many aspects of the evaluation process and then apply them to six case studies based on a diversity of ecological models. In addition to standardising and increasing the transparency of the model evaluation process, we find that going through the OPE protocol helps modelers to think more deeply about the evaluation of their models. From this last point, we suggest that it would be highly beneficial for modelers to consider the OPE early in the modelling process, in addition to using it as a reporting tool and as a reviewing tool.
Standardisation
Best practice
Ecological patterns
Skill assessment
Transparency
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