Fishways as Downstream Routes in Small Hydropower Plants: Experiences with a Potamodromous Cyprinid
نویسندگان
چکیده
Fish need to move upstream and downstream through rivers complete their life cycles. Despite the fact that fishways are most commonly applied solution recover longitudinal connectivity, they not considered viable for migration. Therefore, alternative facilities recommended facilitate However, a few recent studies have disagreed with this general assumption, showing potential bidirectional movements. This study advances our understanding of migration by studying efficiency in run-of-the-river hydropower plant Duero River (Spain). To achieve this, movements Iberian barbel (n = 299) were monitored stepped fishway two years passive integrated transponder (PIT)-tag technology, considering effect fish origin release zone. The results showed 24.9% barbels descended fishway, zone affecting location. In addition, observed throughout whole year, except winter. concludes that, under specific scenarios, could act as safe routes
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ژورنال
عنوان ژورنال: Water
سال: 2021
ISSN: ['2073-4441']
DOI: https://doi.org/10.3390/w13081041