Anadromous
Définition
Sens commun
A migratory species that migrates from the sea to rivers to reproduce. One example is salmon.
Source
according to MNHN and IOWater
Species
Naturalized species
Définition
Sens technique
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.
Source
according to MNHN
Macro-invertebrate
Définition
Sens commun
Animal visible to the naked eye (ie larger than 0.5 mm) that does not have a skeleton, bone or cartilage.
Source
d'après Ministère de l’Écologie, du Développement durable et de l’Énergie
Electric fishing
Définition
Sens commun
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.
Source
According to Wikipedia et Val-de-Meurthe municipality communities
Carbon cycle
Définition
Sens commun
Movement of carbon, in its various forms, between the natural reservoirs of the planet.
Source
according to OFB
Sens technique
Circulation and storage of carbon, in its various forms, between the Earth surface and interior, the atmosphere and biosphere. The main mechanisms of carbon exchange are photosynthesis, respiration and oxidation. A transfer takes place between living organisms, the atmosphere, the earth and water.
Source
according to FAO and IOWater
Cetacean
Définition
Sens commun
Aquatic mammal with front flippers and a horizontal caudal fin – the tail -. For example, whales, sperm whales and dolphins are cetaceans
Source
according to the Robert dictionary
Water column
Définition
Sens commun
Volume of water between the bottom and the surface of a sea, ocean, river or lake.
Source
according to OFB
Sens technique
Concept used in ecology for aquatic and marine environments to describe the physical (temperature, salinity, penetration of light) and chemical characteristics (pH, dissolved oxygen content, nutrients, trace metals...) of seawater, at different depths, for a given geographical point. The water column extends from the water surface to the bottom of rivers,
Source
according to IFREMER
Aquatic mammal
Définition
Sens commun
Set of aquatic vertebrate animals which have the characteristic of being viviparous: the female lets the young grow in its belly, from which they get out alive. Marine mammals living in the oceans (cetaceans), as well as various freshwater species, such as the European otter, are aquatic mammals. Their mode of operation depends on the aquatic ecosystem where they live.
Source
according to Loire-Bretagne Water Agency
Aquatic insect
Définition
Sens commun
Articulated invertebrate animal which have the characteristic of breathing through trachea. Some insects have become aquatic (representing 3% of insects) but have retained this aerial breathing.
Source
according to INRA
Helophyte
Définition
Sens commun
It is a semi-aquatic plant whose leaves and flowers are emerged at least partly. The helophytic plant grows on the banks or the bottom of aquatic environments, when the water depth is sufficiently low and when the bottom and weak current allow the fixation of the roots. For example, the common reed is a helophytic species
Source
according to OFB