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Conservation and restoration of the Allis shad in the Gironde and Rhine watersheds (Alosa alosa)
Date du début: 1 janv. 2011, Date de fin: 31 déc. 2015,
Background
The Allis shad population in the Gironde watershed was the most important population in
Europe until the beginning of the 21st Century with catches of several hundred tonnes/yr of fish. Since 2006 there has been a marked decline in the return rates of mature shads to the rivers for reproduction, the reasons for which are still not well underst ...
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