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Título

Ecological status of seagrass ecosystems: An uncertainty analysis of the meadow classification based on the Posidonia oceanica multivariate index (POMI)

AutorBennett, Scott; Roca, Guillem ; Romero, Javier; Alcoverro, Teresa
Palabras clavePosidonia oceanica
Seagrass
Biological indicators
Coastal waters
Uncertainty analysis
Water Framework Directive
Fecha de publicación2011
EditorElsevier
CitaciónMARINE POLLUTION BULLETIN 62(8) : 1616-1621 (2011)
ResumenQuantifying the uncertainty associated with monitoring protocols is essential to prevent the misclassification of ecological status and to improve sampling design. We assessed the Posidonia oceanica multivariate index (POMI) bio-monitoring program for its robustness in classifying the ecological status of coastal waters within the Water Framework Directive. We used a 7-year data set covering 30 sites along 500 km of the Catalonian coastline to examine which version of POMI (14 or 9 metrics) maximises precision in classifying the ecological status of meadows. Five factors (zones within a site, sites within a water body, depth, years and surveyors) that potentially generate classification uncertainty were examined in detail. Of these, depth was a major source of uncertainty, while all the remaining spatial and temporal factors displayed low variability. POMI 9 matched POMI 14 in all factors, and could effectively replace it in future monitoring programs.
Descripción6 páginas, 3 figuras, 1 tabla.
Versión del editorhttp://dx.doi.org/10.1016/j.marpolbul.2011.06.016
URIhttp://hdl.handle.net/10261/46226
DOI10.1016/j.marpolbul.2011.06.016
ISSN0025-326X
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