Expérimentations hydrauliques et ichtyologiques d'un système de piégeage automatique des poissons migrateurs à Golfech

_P;~Vii)u{studiesrel{J.pn!f~i,p, i rf!quent visits 0/ rhtgrotilli haveillust~â.ted fhe~eeiJu/build'an automatic crossing device. . .. ,Ta proaliee a curr'int which'would aUract fish. experiments on a reduced modelhav,e bee" mit yca . outandareintended to define (installation. jlowrate, speed and swell) characterislid of the i",;prove requj,ed. . '. -. ,< • 17 ,", Aftu thepartial completion of the automatic trap, the 1985migrati~.nseason has , the'sJ!.stemU forsalmonoidea and!()r alosa du~!ngJhe peak migration perioc{.":A;~, ,thejei remains attractive but the speed needs to 'bli"cteasetJi"sidf'/ :Y/âire::;} 'iYtod;i~ithe alosa into th~ trap. ..