Biological cycle
Définition
Sens commun
Regularly repetitive succession of the same series of events in the existence of a living being, a breeding line or the whole of the living world.
Source
according to the Larousse dictionary
Species
Crustacean
Définition
Sens commun
Arthropods with a body made up of segments linked to each other by a joint membrane and wearing a pair of jointed appendix. They can be distinguished from other arthropods by the presence of two pairs of antennae. They live in freshwater, marine waters or in terrestrial environments. They can be mobile or fixed to a support.
Source
According to Ifremer
Berne Convention
Définition
Sens technique
Convention on the Conservation of European Wildlife and Natural Habitats signed in 1979 and entered into force in 1982. For the Member States of the European Union, the so-called Birds and Habitats Directives are the framework in which the provisions of the Berne Convention apply. The habitat requirements are met by the designation of protected areas, known as Natura 2000.
Source
according to the Ministry of the Environment
Amphibian
Définition
Sens commun
Vertebrate animal that has the characteristic of starting its life in the water. At birth, an amphibian breathes through its gills, like a fish. As an adult he now has lungs through which he can breathe freely, but he continues to absorb most of the oxygen he needs through the skin.
Source
according to Aquitaine Wildlife Observatory (AWO)
Ammonification
Définition
Sens technique
Production of ammonia from organic nitrogen by bacteria or decomposer fungi.
Source
according to Wikipedia
Algae
Définition
Sens commun
Unicellular or pluricellular photosynthetic organism usually living in an aquatic environment.
Source
according to Wikipedia
Hatching/Hatchery
Définition
Sens commun
Repopulation of fresh water by introducing fry, practiced by people for fishing or fish farming.
Source
according to the Larousse dictionary
Alevin
Définition
Sens commun
Young fish living on its yolk reserves or having not yet acquired its adult form.
Source
according to Larousse dictionary
Biomarker
Définition
Sens commun
A measurable biological parameter, an indicator of a biological process that can reveal the exposure to or effects of a contaminant. Biomarkers are used to make environmental assessments or health diagnoses.
Source
according to IRSTEA
Food web
Définition
Sens technique
All connected food chains within an ecosystem. A food web refers to all the trophic relationships existing within a biocenosis between the various ecological categories of living beings constituting the latter (producers, consumers, decomposers). Food webs are affected by global changes, especially those related to climate change.
Source
according to Wikipedia