Rechercher un terme
Action to introduce or reintroduce farmed species, mostly in fresh waters, in order to enrich the fish stocks for recreational or professional fishing or to protect threatened species.
Chlorophyllous aquatic plant having no leaves, no roots, no vessels, no flowers, no seeds, whose main photosynthetic pigments are chlorophylls a and b. As the name suggests, they are usually green in color.
Algae phylum whose sometimes exclusive major pigment is chlorophyll β, associated with carotene and xanthophyll. Their only reproductive organs are sporocysts and gametocysts. Their plastids elaborate starch as in the Phanerogamous. It includes three classes: Chlorophyceae, Zygophyceae and Charophyceae.
Surface waters located in the vicinity of river mouths, which are partly saline because of their proximity to littoral waters but which are substantially influenced by freshwater inflows.