Characteristics of surface hardness of spawning riverbed of Ayu (Plecoglossus altivelis altivelis) in Lake Biwa basin

In the Lake Biwa basin (Japan), the number of laying eggs in Ayu, Plecogossus altivelis altivelis, has decreased recently, especially the number in 2017 was very small. Therefore, improving the spawning environment of Ayu is an urgent issue. As Ayu prefers soft riverbed for spawning, in order to res...

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Veröffentlicht in:	Ecology and civil engineering 2019-01, Vol.22 (1), p.93-101
Hauptverfasser:	Mizuno, Toshiaki, Azuma, Yoshihiro, Kitai, Takeshi, Kojima, Nagahiro
Format:	Artikel
Sprache:	jpn
Schlagworte:	Freshwater Plecoglossus altivelis altivelis Riverbeds Spawning grounds
Online-Zugang:	Volltext
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