Qualifies activities related to fishing in all its forms, professional or recreational, in freshwater or marine areas.
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.
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
Low flow value below which the supply of drinking water for essential needs for human and animal life, and for the survival of the species found in the environment, are endangered. At this low-flow level, all possible measures to restrict consumption and
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.