Fish diversity in the Seine (Hauts-de-Seine)

Number of fish species, number of individuals, counted at the Hauts-de-Seine analysis stations since 2009 The Department participates in monitoring the state hydrobiological management of the Seine as part of the "Sustainable development and management plan for the Seine and its banks" adopted by the Departmental Assembly on February 24, 2006. The Seine can indeed be impacted locally by the development of the banks carried out by the Department, and some developments can also be effective and improve the quality of the local aquatic environment, such as the construction of spawning grounds along the river. Since 2009, a multi-year program of measures has been jointly established with the State services (DIREN, SNS, ONEMA, AESN) and the SIAAP, and 7 sampling stations spread over the 39 km of linear Seine in the department have been defined. In Within the framework of monitoring the hydrobiological state of the Seine, the Department of Hauts-de-Seine carries out each summer an analysis of the quality of fish spawning and fish productivity by fishing for fry. These analyzes vary from one station to another, because the studied environments are different and the results are also influenced by the climatic conditions during the analysis campaigns. Glossary Spawning The term spawning covers many things related to the reproduction of fish and amphibians. First of all, spawning is the phase of sexual rapprochement with external fertilization of fish. If this spawning occurs in a specific place or habitat, then it is called a spawning ground. This term also designates the time in which this rapprochement takes place. Finally, spawning refers to the eggs of fish and amphibians, as well as very young fry. Alevin Young fish still living on the reserves of its yolk sac or at least not having yet acquired the forms of the adult. IQF Score (/20) Spawning Quality Index on a scale of 20. Special observations The location of the measurement stations is available on the platform in the "Hydrobiological stations" dataset. The "NUMBER" field makes it possible to make the link between the hydrobiological measurements and the stations. Related dataLocation of hydrobiological stations in the Hauts-de territory -Seine