Essays about: "passage effektivitet"

Found 4 essays containing the words passage effektivitet.

  1. 1. Evaluating an increased spill regime as a management tool to improve downstream passage of salmon smolt

    University essay from Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)

    Author : Mattias Hansson; [2022]
    Keywords : hydraulic modeling; hydroacoustic telemetry; time to event analysis; hydraulisk modellering; överlevnadsanalys; hydroakustisk telemetri;

    Abstract : The anadromous Atlantic salmon (Salmo salar) is dependent on river connectivity to reach spawning and rearing habitats in rivers. Most rivers are today fragmented by artificial barriers such as hydroelectric powerplants (HEP) which impede this migratory movement. READ MORE

  3. 2. Effectiveness of a fish-guiding device for downstream migrating smolts of Atlantic salmon (Salmo salar L.) in the River Piteälven,northern Sweden

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Linda Vikström; [2016]
    Keywords : salmon smolt; spill gate passage; turbine-mortality; fish way; guidance structure;

    Abstract : Hydropower poses a major threat to both upstream and downstream migrating Atlantic salmon (Salmo salar L.). To ensure a relatively safe route for migrating fish, fish ways and different guidance structures are constructed to help fish to bypass the turbine intakes to power stations. READ MORE

  4. 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 Studies

    Author : Robert Karlsson; [2013]
    Keywords : passage efficiency; salmon; fish ladder; telemetry; power station;

    Abstract : 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

  5. 4. Downstream migration of brown trout (Salmo trutta) smolts past hydropowerplants in the river Emån

    University essay from Institutionen för natur och miljö

    Author : Michael Olson; [2005]
    Keywords : Salmo trutta; brown trout; passage efficiency; telemetry; downstream migration; hydropower plant; Havsöring; passage effektivitet; telemetri; nedströms migration; vattenkraftverk;

    Abstract : The passage efficiency of downstream migrating brown trout (Salmo trutta) smolts past two hydropower plants in the River Emån, southeastern Sweden, was evaluated by telemetry. From 26 April to 17 May 2005, 40 wild brown trout smolts were radio-tagged, and their positions were recorded daily until 14 June. READ MORE