A new diatom-based multimetric index to assess lake ecological status.
Ecological assessment
Lakes
Phytobenthos
Water framework directive
Journal
Environmental monitoring and assessment
ISSN: 1573-2959
Titre abrégé: Environ Monit Assess
Pays: Netherlands
ID NLM: 8508350
Informations de publication
Date de publication:
13 Sep 2023
13 Sep 2023
Historique:
received:
16
05
2023
accepted:
06
09
2023
medline:
14
9
2023
pubmed:
13
9
2023
entrez:
13
9
2023
Statut:
epublish
Résumé
Eutrophication impairs lake ecosystems at a global scale. In this context, as benthic microalgae are well-established warnings for a large range of stressors, particularly nutrient enrichment, the Water Framework Directive required the development of diatom-based methods to monitor lake eutrophication. Here, we present the diatom-based index we developed for French lakes, named IBDL (Indice Biologique Diatomées en Lacs). Data were collected in 93 lakes from 2015 to 2020. A challenge arose from the discontinuous pressure gradient of our dataset, especially the low number of nutrient-impacted lakes. To analyze the data we opted for the so-called "Threshold Indicator Taxa ANalysis" method, which makes it possible to determine a list of "alert taxa." We obtained a multimetric index based on specific pressure gradients (Kjeldahl nitrogen, suspended matter, biological oxygen demand, and total phosphorous). Considering the European intercalibration process, the very good correlation between IBDL and the common metric (R
Identifiants
pubmed: 37702871
doi: 10.1007/s10661-023-11855-w
pii: 10.1007/s10661-023-11855-w
pmc: PMC10499699
doi:
Substances chimiques
Phosphorus
27YLU75U4W
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1202Informations de copyright
© 2023. The Author(s).
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