Essays about: "Fisktrappa"
Found 5 essays containing the word Fisktrappa.
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1. Convolutional neural network based object detection in a fish ladder : Positional and class imbalance problems using YOLOv3
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : Hydropower plants create blockages in fish migration routes. Fish ladders can serve as alternative routes but are complex to install and follow up to help adapt and develop them further. In this study, computer vision tools are considered in this regard. READ MORE
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2. Full Circle: upstream and downstream migration of Atlantic salmon (Salmo salar) in the northern Swedish river Vindelälven
University essay from SLU/Dept. of Wildlife, Fish and Environmental StudiesAbstract : The life cycle of the anadromous Atlantic salmon (Salmo salar) can span large geographic, political, and socio-economic boundaries. Management strategies and regulations that only concentrate on small spatial scales often overlook larger basin-wide problems, especially relating to post-spawn seaward migration. READ MORE
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3. Passage efficiency and migration behavior for adult Atlantic salmon at a Half-Ice Harbor fish ladder
University essay from SLU/Dept. of Wildlife, Fish and Environmental StudiesAbstract : Due to exploitation of the world’s rivers, the upstream migration of anadromous species is frequently delayed or even prevented. To mitigate these problems and allow fish to migrate past obstacles, structures such as fish ladders have been developed. However, recent studies show that many of the present fish passage facilities are deficient. READ MORE
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4. Utvärdering av den nationella databasen över åtgärder i vatten i fem svenska huvudavrinningsområden
University essay from SLU/Dept. of Aquatic Sciences and AssessmentAbstract : Restoration projects are planned and carried out in order to reduce the impact due to anthropogenic influence and to achieve at least good ecological status according to the EU Water Framework Directive. The resilience effort of such restorations is however ambiguous. READ MORE
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5. Migration losses of Atlantic salmon (Salmo salar L.) smolts at a hydropower station area in River Åbyälven, Northern Sweden : passage fates at a reservoir, a power house and a bypass structure
University essay from SLU/Dept. of Wildlife, Fish and Environmental StudiesAbstract : A large number of rivers in northern Sweden have hydropower developments that cause negative effects on both up- and downstream migrations of anadromous species like Atlantic salmon. So far, most attention has focused on the hindrances of adult fish during their upstream spawning migration. READ MORE
