Data/hora: 04/06/2024 13:40:53

Provedor de dados: | 5
País: | France
Título: | Agrégation des sous-éléments de qualité de l’élément de qualité « Flore autre que phytoplancton »
Autores: | Miossec, Laurence.
Data: | 2016-03
Ano: | 2016
Palavras-chave: | Macroalgues; Blooms opportunistes; Herbiers; Manche Atlantique; Méthodes d’agrégation; Macroalgae; Eelgrass beds; Opportunistic blooms; Channel and Atlantic coastline; Aggregation rules.
Resumo: | The Water Framework Directive uses the “One-out, all-out” (OAOO) principle in assessing water bodies (i.e. the worst status of the elements used in the assessment determines the final status of the water body). Combination of multiple parameters within a biological quality element (BQEs) can be done in different ways. This study analysed several aggregation conditions within the BQE "Flora other than phytoplankton" (intertidal macroalgae, subtidal macroalgae, eelgrass beds and opportunistic blooms) using monitoring data collected along the Channel and Atlantic coastline.  Four aggregation criteria were tested on two sets of data collected between 2004 and 2014: OOAO, average, intermediate method between OOAO and average and a method taking into account an uncertainty value at the threshold "Good/Moderate." Based on available data, the intermediate method appears the most qualified method using first an averaging approach between the natural habitat elements and then applying the OAOO between this mean and the opportunistic blooms, characteristic of an eutrophic environment.  Expert judment might be used to ensure in the overall interpretation of results at waterbody level and in the classification outcomes.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00348/45869/45568.pdf

http://archimer.ifremer.fr/doc/00348/45869/

Formato: | application/pdf

Fonte:

2016 ONEMA, Ifremer

info:eu-repo/semantics/openAccess

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