Uncertainty analysis along the ecological quality status of water bodies: The response of the Posidonia oceanica multivariate index (POMI) in three Mediterranean regions

Oriol Mascaró*, Scott Bennett, Núria Marbà, Vedran Nikolić, Javier Romero, Carlos M. Duarte, Teresa Alcoverro

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Uncertainty analyses allow the identification and quantification of the factors that contribute to the potential misclassification of the ecological status of water bodies, helping to improve the sampling design used in monitoring. Here we used a Posidonia oceanica multivariate index (POMI) bio-monitoring dataset covering a total of 81 sites distributed throughout 28 water bodies from the coast of Catalonia, Balearic Islands and Croatia to determine the levels of uncertainty associated with each region and how they change according to the quality status of water bodies. Overall, variability among sites (meadows) within water bodies was the factor that generated the greatest risk of misclassification among the three regions, within which the Balearic Islands had the lowest uncertainty, followed by Croatia and Catalonia. When water bodies classified in good/high quality were separated from those in moderate/poor status classes, we found that the latter displayed higher levels of uncertainty than the former.

Original languageEnglish (US)
Pages (from-to)926-931
Number of pages6
JournalMarine pollution bulletin
Volume64
Issue number5
DOIs
StatePublished - May 2012
Externally publishedYes

Bibliographical note

Funding Information:
We thank all the different people involved in the monitoring programmes of Catalonia, Balearic Islands and Croatia for their work in the field and laboratory. We also thank Michael Dunbar and Ralph Clarke for his assistance in statistical analyses. This research was funded by l’Agencia Catalana de l’Aigua, the Govern de les Illes Balears and WISER (Water bodies in Europe: Integrative Systems to assess Ecological status and Recovery) funded under the 7th EU Framework Programme, Theme 6 (Environment including Climate Change) , Contract No.: 226273 ).

Keywords

  • Biological indicators
  • Mediterranean
  • Seagrass
  • Uncertainty
  • Water Framework Directive

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science
  • Pollution

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