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Sökning: WFRF:(Stoilova Velizara)

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  • Franklin, Paul A., et al. (författare)
  • Aquatic connectivity : challenges and solutions in a changing climate
  • 2024
  • Ingår i: Journal of Fish Biology. - : John Wiley & Sons. - 0022-1112 .- 1095-8649.
  • Forskningsöversikt (refereegranskat)abstract
    • The challenge of managing aquatic connectivity in a changing climate is exacerbated in the presence of additional anthropogenic stressors, social factors, and economic drivers. Here we discuss these issues in the context of structural and functional connectivity for aquatic biodiversity, specifically fish, in both the freshwater and marine realms. We posit that adaptive management strategies that consider shifting baselines and the socio-ecological implications of climate change will be required to achieve management objectives. The role of renewable energy expansion, particularly hydropower, is critically examined for its impact on connectivity. We advocate for strategic spatial planning that incorporates nature-positive solutions, ensuring climate mitigation efforts are harmonized with biodiversity conservation. We underscore the urgency of integrating robust scientific modelling with stakeholder values to define clear, adaptive management objectives. Finally, we call for innovative monitoring and predictive decision-making tools to navigate the uncertainties inherent in a changing climate, with the goal of ensuring the resilience and sustainability of aquatic ecosystems. 
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  • Stoilova, Velizara, et al. (författare)
  • Novel’Dancing Rods’ Behavioural Barrier for the Guidance of Juvenile Salmonids
  • 2023
  • Ingår i: Proceedings of the IAHR World Congress. - : International Association for Hydro-Environment Engineering and Research. - 9789083347615 ; , s. 3142-3146
  • Konferensbidrag (refereegranskat)abstract
    • When fish migrate downstream, they follow bulk flow and unless enough flow is redirected towards a bypass, they need guidance to pass the dam. Guidance relying on behavioural responses by fish are generally less effective but less expensive than physical guidance structures, and hence there is an interest in finding more effective behavioural guidance systems. Here we test a newly developed behavioural guidance system referred to as the ’dancing rods’ guidance barrier. The system consists of a series of evenly-spaced parallel floating polyethylene rods that are anchored to the river bottom, vacillating with the flow, thereby presenting the fish will a “permeable wall” whose purpose is to lead the fish away from the turbines. A single pilot trial with 106 out-migrating Atlantic salmon smolts carried out in a large experimental flume showed that the barrier was effective in deterring fish from passing through it. Only 5.7% of the fish crossed the rods barrier downstream, while the rest of the fish remained upstream 51.9%, stayed around the start box or followed the barrier downstream until they reached the end of a bypass ramp 39.6%. Further testing is required to establish the potential of the ‘dancing rods’ as a guiding structure. 
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