Dear MARMAM community,
please find a new publication on how to integrate assessment outcomes as
required under some conservation instruments such as the Marine Strategy
Framework Directive of the European Union. The publication has a case
study on marine mammals, building on the work of the OSPAR Quality
Status Report of 2023.
Title: Integration of indicator outcomes for assessing good
environmental status: A model-based approach
Abstract: Integrated assessments are required to track ecosystem status,
any change thereof and progress due to conservation measures. The
European Union Marine Strategy Framework Directive (MSFD), which aims
among others at maintaining biodiversity, requires regular quantitative
assessments built from monitoring data and indicator developments to
decide on the environmental status of each element in a marine
ecosystem. Beyond the daunting tasks incurred with large-scale
monitoring and timely analyses, collapsing the multivariate information
from indicators on several species into a single number reflecting an
overall environmental status is the challenge associated with
integration. The ‘One Out, All Out’ (OOAO) integration rule is currently
in use in part due its simplicity and ease of use. Its main drawback is
its built-in sensitivity to error in binary assessment outcomes:
statistical noise will dominate integration with an increasing number of
species or indicators. We developed a model-based approach to
integration for MSFD assessments within the statistical framework of
Signal Detection Theory. We benchmarked the model performance against
the OOAO integration rule in a simulation study. The model-based
integration scheme redresses known deficiencies with the OOAO rule and
clarifies statistical assumptions behind integration rules, unifying
them across a continuum. We illustrated our approach with a case study
on the ecosystem component ’marine mammals’ in the Northeast Atlantic.
We believe our model-based approach provides a more comprehensive
integrated output of ecosystem assessments that aligns better with
decision-making under uncertainty in evidence-based policy.
Reference: Authier, M. & Gilles, A. (2025) Integration of indicator
outcomes for assessing good environmental status: A model-based
approach. Ecological Informatics, 92, 103502. 10.1016/j.ecoinf.2025.103502
The full-text is available at
https://www.sciencedirect.com/science/article/pii/S1574954125005114
Cheers
Matthieu
--
Matthieu Authier - Ingénieur de Recherche
La Rochelle Université
Observatoire Pelagis UAR 3462 CNRS-LRUniv
5 allée de l'océan 17 000 La Rochelle
telephone: +00 33 (0)7 77 22 32 67 (remote-working/télé-travail)
https://www.observatoire-pelagis.cnrs.fr/pelagis-2/lequipe/matthieu-authier/
Try again. Fail again. Fail better. (Samuel Beckett)
Verzögerungen im Betriebsablauf (Deutsche Bahn)
Being an academic doesn’t mean that everyone thinks you’re smart; it means that
a few smart people think you’re wrong. (Thomas Basboell)
🍍 🦉🐛
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