Description

Diatom biological quality indices (IBDs) of Breton rivers by monitoring station from 1995 to 2022. These indices are calculated using standardised methods (Afnor) and used routinely as part of the assessment of the ecological status of waters. Each station is attached to its different territories (territory contract, sage, epci, region, department). **Sources:** AELB (BD OSUR), OFB (Naïades), Dreal Bretagne, 2023. Processing: Environment Observatory in Brittany, 2023. **Go further:** consult the regulatory context and methodology in the datavisualisation "Biological indices: Analysis of the evolution of the quality of Breton rivers since 2007" carried out by the EPO.

Resources

Name	Format	Description	Link
	0		https://www.data.gouv.fr/fr/datasets/r/375c1fc6-01e0-4396-b09f-9fa4b2394ef7
	0		https://www.data.gouv.fr/fr/datasets/r/3918353d-c83c-432e-af4c-9caf58cf3a26
	0		https://www.data.gouv.fr/fr/datasets/r/908a9269-a04c-4c1c-9a15-b60e482bb891
	8		https://www.data.gouv.fr/fr/datasets/r/57e96ea5-810f-435b-961c-81568d7b96ae
	8		https://www.data.gouv.fr/api/1/datasets/r/6379c573-502d-468b-8a3e-95151ced22ff
	0		https://www.data.gouv.fr/api/1/datasets/r/6473f177-e97b-4cc5-83bd-e5d911c81692
	0		https://www.data.gouv.fr/api/1/datasets/r/2d61ae54-75b3-455c-98fc-02df6e0939e5
	0		https://www.data.gouv.fr/api/1/datasets/r/02aa1be8-cc6d-4adc-a8ec-8bf39b440d1e
	0		https://www.data.gouv.fr/api/1/datasets/r/063ae2a1-4b97-4b2d-aeed-10a34039655b
	0		https://www.data.gouv.fr/api/1/datasets/r/1a555cca-78a8-492f-b1ac-b7b91b639efe
	0		https://www.data.gouv.fr/api/1/datasets/r/52b8915e-0a59-4aed-a1f0-767390bea24f

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