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Demesnial water

Updated on 06/09/2018
Définition
Sens commun
Part of a river owned and maintained by a national governmental body. This maintenance can be delegated to the regions or departments.
Source
according to French private forestry

Non-demesnial water

Updated on 06/09/2018
Définition
Sens commun
Part of a river not owned by a national governmental body. Watercourses that are neither navigable nor floatable, brooks, torrents or small streams are considered to be private.
Source
according to French private forestry

Man made lake

Updated on 06/09/2018
Définition
Sens commun
Large expanse of water surrounded by land, created or enlarged by man, where it is enough that the depth, surface area or volume are sufficient to cause sediment deposit or stratification.
Source
according to Wikipedia

Algal bloom

Updated on 27/02/2019
Définition
Sens commun

Phenomenon of exceptional proliferation of algae.

Source
d'après Ifremer

Law of 21 April 2004 on WFD transposition

Updated on 25/02/2019
Définition
Sens réglementaire
Law transposing the 2000 Water Framework Directive (WFD), which harmonises European regulations on water management and introduces the obligation to protect and restore the quality of water and aquatic environments in the European Union. Environmental objectives must be set for all aquatic environments (rivers, lakes, coastal waters - coastal and transitional waters - and groundwater) by 2015: achievement of good water status, no deterioration of resources and reduction or elimination of discharges of hazardous substances. The novelty of the concept of "good status" now relies on the proper functioning of aquatic environments taking into account all components of the environment: water, wildlife, flora and habitats.
Source
according to AFB

Thermal stratification

Updated on 04/12/2018
Définition
Sens commun
Existence of layers of water at different temperatures, which do not mix, in a voluminous body of water (such as a lake)
Source
according to IFREMER

Natural eutrophic lake

Updated on 13/07/2018
Définition
Sens commun

Lake (body of water, pond, etc.) whose waters enriched with organic matter (containing nitrogen, phosphorus, potassium for example) are places of an algal and bacterial proliferation.

Source
according to Larousse dictionary

Standing water

Updated on 13/07/2018
Définition
Sens commun

Surface water in which there is little or no flow. For example, lakes or ponds are standing water.

Source
according to Adour-Garonne Water Agency

Agroecology

Updated on 13/10/2021
Définition
Sens commun

Concept utilisé en agriculture et en agronomie. L’agroécologie renvoie à la fois à une discipline scientifique, à un mouvement social et à des pratiques agricoles. Elle tire ses racines de l’écologie et des sciences sociales. Elle considère les écosystèmes et vise à les imiter (biomimétisme) pour parvenir à un modèle de production économe en énergie, respectueux de l’environnement et compétitif.

Source
d'après Ministère de l'agriculture, et la Cité de l'agriculture

Directive on the conservation of wild birds

Updated on 06/01/2021
Définition
Sens réglementaire

Directive 2009/147/CE du Parlement européen et du Conseil du 30 novembre 2009 concernant la conservation des oiseaux sauvages. Elle vise la conservation de tous les oiseaux sauvages dans l’Union européenne (UE) en fixant des règles pour leur protection, leur conservation, leur gestion et leur régulation. Elle s’applique aux oiseaux ainsi qu’à leurs œufs, à leurs nids et à leurs habitats. Elle codifie la directive adoptée initialement en 1979 (directive 79/409/CEE).
La directive 2009/147/CE a été modifiée en 2019 par le règlement (UE) 2019/1010, lequel simplifie, tout en s’y conformant, les obligations de déclaration dans le domaine du droit de l’environnement.

Source
d'après Eur-lex

Database on thematic mapping of the Water Agencies

Updated on 13/07/2018
Définition
Sens technique

A set of geographic layers presenting hydrographic objects for the French territory. This includes cutting the territory into "hydrographic areas" (river basins) as well as watercourses and bodies of water, and the codification of these objects. The Carthage database (Database on thematic mapping of the Water Agencies) was developed by IGN, the Water Agencies and the Ministry for the Environment and is based on the hydrographic layer of the CARTO database. The National Service for Water Data and Reference-dataset Management (Sandre) disseminates this geo-referenced dataset through its data catalogue and cartographic Atlas.

Source
According to the Ministry for the Environment

Biotope

Updated on 13/07/2018
Définition
Sens technique

Space characterized by climate, geographical, physical, morphological and geological factors, ... in constant or cyclic equilibrium and occupied by organisms that live in specific association (living communities). This is the non-living component (abiotic) of the ecosystem.

Source
According to the Ministry for the Environment and AFB

Public waterways domain

Updated on 05/03/2019
Définition
Sens commun

Domain consisting of rivers and lakes belonging to the State, local authorities or their groupings, and classified in their public domain fluvial. The delimitation of state watercourses is determined by decree in Council of State.

Source
d'après Ministère chargé de l'environnement

Eutrophication

Updated on 04/07/2018
Définition
Sens commun
Excessive enrichment of rivers and water bodies by nutrients, mainly phosphorus and nitrogen, which constitute a true fertilizer for aquatic plants. It is characterized by excessive proliferation of plants whose decomposition causes a significant decrease in the oxygen content. It results, among other things, in a diminishing fauna and flora diversity and in disrupted uses (drinking water supply, recreational activities, etc).
Source
According to the Ministry for the Environment and AFB

Catchment area

Updated on 13/07/2018
Définition
Sens commun

Area from which rainwater flows into a river, a body of water or a reservoir.

Source
According to the Ministry for the Environment and AFB

Pond with brackish water

Updated on 13/07/2018
Définition
Sens commun
Natural body of water occurring in more or less direct connection with the sea and inland waters, which gives it a salinity approximately between 2 and 20°/°°.
Source
According to Rhone-Mediterranean and Corsica Water Agency

Inland waters

Updated on 13/07/2018
Définition
Sens commun
All stagnant and running waters on the ground and all underground waters, and located upstream of the baseline used for the delimitation of territorial waters.
Source
According to AFB

Altitude

Updated on 13/07/2018
Définition
Sens technique
Vertical elevation of a place or object relative to a basic level. Altitude is also a value that expresses a difference between a given point and an average level. On land, this level is usually the sea level (or "zero level"). Specifically, the altitude of the body of water is considered as average for natural water bodies and as normal operating level or normal water retention level (NR) for man-made water bodies. The…
Source
According to AFB

Mixture of water

Updated on 13/07/2018
Définition
Sens technique
Mixing occurring in bodies of water. These differ according to their characteristics of water mixture. There are thus: (i) dimictic lakes (which mix twice a year, with direct thermal stratification in the hot season and a reverse stratification when the lake freezes); (ii) meromictic lakes (characterized by a stable stratification of their deep waters); (iii) monomictic lakes (which mix once a year and can be divided into two categories: warm monomictic lakes - the water temperature at the surface and at the bottom does not fall below 4°C, and cold monomictic lakes - called polar, insofar as, in the hot season, the surface waters do not exceed 4°C); and (iv) polymictic lakes (which have an unstable thermal stratification, easily destroyed by wind, during summer).
Source
According to AFB

Average elevation

Updated on 13/07/2018
Définition
Sens technique
Usual average altitude of the water line of a natural body of water. The average elevation is calculated by regularly measuring the height of the water line of the water body using a scale, indexed on the geographic levelling in force or any other technical means (probe, sounding line or other) and on a given period (calendar year or other period). For lack of regular measurements, especially for smaller water…
Source
According to AFB

Pond

Updated on 13/07/2018
Définition
Sens commun
A body of water of natural or artificial origin, with shallow depth and without stable thermal stratification. It is fed mainly by its catchment area, and is usually characterized by high plant growth and animal productivity (fish, amphibians, reptiles, resident and migratory birds, etc).
Source
According to AFB

Basin

Updated on 13/07/2018
Définition
Sens commun
Form indicating the overall configuration of the water body. It can be of the following types: "L", in the case of shallow lakes with thermal stratification of little extent and/or unstable (polymictic lakes) and a heavily dominant coastal zone; "P" in the case of deep lakes with a stable thermal stratification (monomictic or dimictic lakes) and a reduced coastal zone; "LP" in the case of lakes with both a stable stratified deep zone (monomictic or dimictic) and a wide coastal area, the
Source
According to AFB