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Framework Document elaborated in each metropolitan area, by the Regional Council and the regional prefect, in association with local stakeholders, locally developed the green and blue infrastructure. The Regional Ecological Coherence Scheme (SRCE) is to identify biodiversity reservoirs and ecological corridors that link them. It includes an action plan to ensure the preservation and restore ecological continuity identified while taking into account land use planning issues and human activities. The SRCE must also be compatible with the planning documents, such as territorial coherence…
Marine and terrestrial sites that include natural habitats or species of wild fauna and flora considered to be of Community interest, and whose rarity, vulnerability or specificity justify the implementation of conservation measures, in accordance with the European Habitats Directive.
According to European Directive 92/43/EEC,'a site of Community importance designated by the Member States by a regulatory, administrative and/or contractual act in which the conservation measures necessary to maintain or restore, in a favourable conservation status, the natural habitats and/or populations of the species for which the site is designated are applied'.
Se dit d’un cours d’eau droit, linéaire, ayant subi des modifications profondes de sa morphologie de la main de l’homme. Il peut présenter de nombreuses anomalies de fonctionnement (érosion régressive, incision), une homogénéisation de ses faciès d’écoulement et donc une perte d’intérêt majeur pour la faune et la flore. En opposition au cours d’eau méandriforme.
Phénomène d’érosion qui se propage de l’aval vers l’amont d’un cours d’eau : dans le cas d’un déficit sédimentaire sur un tronçon aval, le cours d’eau, pour retrouver sa pente d’équilibre, va prélever en amont les sédiments nécessaires. Cette dynamique de rééquilibrage, souvent causée par la rectification du cours d’eau ou l’extraction trop importante de granulats dans son lit, se poursuit tant que le cours d’eau n’a pas retrouvé une pente d'équilibre, et peut provoquer un phénomène d‘incision. S'oppose à l'érosion progressive.
Natural (spring) or artificial access (drilling, drain, well, etc) to groundwater. Each water point has a national code (BSS code) and is located by geographic coordinates through a projection system. It is also defined by the following additional pieces of information: a name or label, an altitude, an address (locality), a location map.
Order established by the department prefect to implement measures to conserve biotopes such as ponds, marshes, swamps, heathland, dunes, groves, hedgerows, lawns and any natural formation not exploited by humans since these biotopes are necessary for reproduction, feeding, rest, survival of protected species. The biotope protection order is particularly adapted to deal with emergency situations of destruction or significant modification of an area.
All living beings (Living communities), non-living elements and climatic and geological conditions (biotope) that are related and interact with each other, and which constitute a basic functional unit in ecology. The ecosystem of an aquatic environment is generally described by: the living beings that are part of it, the nature of the bed and river banks, the characteristics of the catchment area, the hydraulic regime, and the physical-chemical characteristics of water.
Grass strip bordering a plot, mainly located along rivers, which acts as a buffer zone by intercepting and filtering runoff water.
Area which is part of the scientific inventory developed under an international program of Birdlife International to identify the most favorable areas for the conservation of wild birds.
Area designated under the 1979 Birds Directive 79/409 / EEC. Areas of importance for the conservation of birds (IBAs) are sites that have been identified as important for certain bird species (breeding areas, seabirds). wintering or migration relay areas) during the scientific inventory program launched by the NGO Birdlife International. They don't have a particular legal status. The most suitable sites for the conservation of the most endangered birds are classified totally or partially in Special Protection Areas (SPAs). The latter, associated with the Special Areas of Conservation constitute the network of Natura 2000 sites.
Areas established pursuant to EEC Directive 79/409 on the protection of birds and their habitats. They have been delineated by the network of French ornithologists on the basis of the criteria proposed in a methodological note. After validation, they are designated to be designated Special Protection Areas (SPAs).