Rechercher un terme
The vegetation that covers the ground. The vegetation cover of a soil is an agri-environmental good practice which induces benefits, such as the mitigation of nitrogen pollution, soil protection and a greater biodiversity.
An introduced species that meets ecological conditions favourable to its sustainable establishment over time that can establish populations in an autonomous manner and integrated into the ecosystem.
A species that is indigenous or non-native to a given territory, proliferates and extends its range due to an increase in population density.
Espaces délimités en mer qui répondent à des objectifs de protection de la nature à long terme. Le code de l’environnement reconnaît différentes catégories d’aires marines protégées. La plupart des aires marines protégées permettent de concilier les enjeux de protection et le développement durable d’activités.
Le code de l'environnement (article L334-1 modifié le 24/07/2019), reconnaît différentes catégories d'aires marines protégées qui répondent chacune à des objectifs propres tout en étant complémentaires.
Espaces délimités en mer au sein duquel un objectif de protection de la nature à long terme a été défini, objectif pour lequel un certain nombre de mesures de gestion sont mises en œuvre : suivi scientifique, programme d’actions, chartes de bonne conduite, protection du domaine public maritime, réglementations, surveillance, information du public, etc. Sur la base de cette définition, l’objectif de protection n’est pas exclusif d’autres objectifs, notamment de développement économique maîtrisé (utilisation et exploitation durables des ressources marines).
Pour en savoir plus :
All living organisms (animals and plants including microorganisms) that occupy a given ecosystem. This group of living organisms is characterized by a specific composition and by interdependence phenomena. It occupies an area known as biotope and with the latter makes an ecosystem. A biocenosis changes over time (pioneer phase, intermediate phase and equilibrium phase).
Directive 92/43 / EEC of 21 May 1992 on the conservation of natural habitats and fauna and flora, known DHFF Directive. It aims to contribute to the maintenance of biodiversity by defining a common framework for the conservation of natural habitats - terrestrial or aquatic - and wild species of plants and animals of community interest. It obliges membres of states designate
Endangered or vulnerable or rare or endemic species (i.e. living on a well-defined territory) listed either in Annex II of fauna and flora habitats directive, then special areas of conservation have to be designated, or in Annexes IV or V of the fauna and flora habitats directive, and for which protective measures must be implemented on the whole territory.
A Local public institution located overseas, similar to the water agencies in continental France, which is responsible for facilitating the various activities of common interest in the management of water and aquatic environments to help achieving the objectives of the river basin management plans (SDAGEs). There is currently a water board in the Reunion, Martinique, Guadeloupe and Guyana. Since Mayotte became a Department, there are thoughts of creating a water board.
Warning issued in advance by the departmental flood forecasting services. In the event of heavy rainfall or hydrological alert, a flood warning is sent to the Prefect, who then alerts the mayors of the catchment areas concerned.
Warning issued in advance by a special state service (flood forecasting service). In the event of a rainfall or hydrological alert (triggering when thresholds are exceeded), the flood forecasting service offers the Prefect the alert of the mayors of the watersheds concerned. As a severe overflow flood, the flood warning service broadcasts, for prefects and mayors, hydrological situation bulletins and information on the evolution of water levels . In 1994, 54 flood warning services monitored 16,000 km of waterways in France using automated measurement networks.
Group of local authorities established, at a watershed or a group of sub-watersheds scale, in order to facilitate the flood prevention, the defense against the sea, the management of water resources, and the preservation and management of wetlands. When a Sub-basin Management Plan has been set up, the Public river-basin territorial agency contributes to its monitoring and development. It ensures also the consistency of the management project of the Public water management and development agency.
Method used to evaluate the abundance of fish species in a portion of a stream and to precise the different populations. It consists in the creation of an electric current which attracts fish. Then, paralyzed by electricity, they rise to the surface, which helps their identification and counts. After a little while, fish are free to circulate in the stream again.