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| Belpaire, C.; Smolders, R.; Vanden Auweele, I.; Ercken, D.; Breine, J.; Van Thuyne, G.; Ollevier, F.P.. |
| A multimetric fish Index of Biotic Integrity (IBI) was composed to assess the biotic integrity of Flandrian water bodies. As fish communities differ substantially between standing waters, running waters of the bream zone and running waters of the barbel zone, eight candidate metrics for each of these water types or zones were identified, representing three major classes of biological attributes. These are species richness and composition, fish condition and abundance, trophic composition. The metrics were tested and modified where needed. The IBI was applied throughout Flanders on 104 locations in standing waters, 500 locations in waters of the bream zone and 257 locations in waters of the barbel zone. Standing waters scored substantially different from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abundance Aquatic communities Body conditions Community composition Condition factor Freshwater environments Freshwater fish Inland water environment Species diversity Trophic relationships Trophic structure Water bodies Pisces [Fish] Belgium Belgium; Flanders. |
| Ano: 2000 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=4904 |
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| Tableau, Adrien; Drouineau, Hilaire; Delpech, C.; Pierre, M.; Lobry, J.; Le Pape, O.; Breine, J.; Lepage, Mario. |
| In the Water Framework Directive (European Union) context, a multimetric fish based index is required to assess the ecological status of French estuarine water bodies. A first indicator called ELFI was developed, however similarly to most indicators, the method to combine the core metrics was rather subjective and this indicator does not provide uncertainty assessment. Recently, a Bayesian method to build indicators was developed and appeared relevant to select metrics sensitive to global anthropogenic pressure, to combine them objectively in an index and to provide a measure of uncertainty around the diagnostic. Moreover, the Bayesian framework is especially well adapted to integrate knowledge and information not included in surveys data. In this context,... |
| Tipo: Text |
Palavras-chave: Anthropogenic pressure; Bayesian method; Expert judgement; Multimetric fish-based indicator; Prior information; Water Framework Directive. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00146/25700/24029.pdf |
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