Essays about: "Salmo salar"

Showing result 1 - 5 of 50 essays containing the words Salmo salar.

  1. 1. Development of osmo- and appetite regulation during transfer of smolt from freshwater to increasing salinities

    University essay from Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Author : Jonna Hellesten; [2023-01-26]
    Keywords : ;

    Abstract : Atlantic salmon (Salmo salar) is common in Scandinavian aquaculture and must be transferred from freshwater to seawater to grow properly. Despite being assessed as ready smolts, meaning they have gone through the physiological changes to prepare for SW transfer, the transfer result in a mortality rate of around 13-19%, and significant appetite- and growth reductions. READ MORE

  3. 2. Effects of summer peaks on brown trout and Atlantic salmon growth and survival in hydropower-regulated Gullspång River

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Oscar Hallberg; [2023]
    Keywords : hydropeaking; hydropower; fish; salmon; salmo salar; salmo trutta; summer; survival; growth; parr; fry; korttidsreglering; vattenkraft; salmonid; salmo salar; salmo trutta; tillväxt; överlevnad; lax; öring;

    Abstract : Daily demands for electrical power are met through sub-daily release of turbined water in the form of hydropeaking. Hydropeaking’s changes to stream flow are listed as a threat to biodiversity in river ecosystems as it causes rapid habitat alteration such as increased depth and velocity, affecting the species living downstream. READ MORE

  4. 3. Optimal Discharge from a Hydropower Plant for Fish Reproduction: An Aquatic Habitat Model

    University essay from Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Author : Hugo Lindbäck; [2023]
    Keywords : Weighted Usable Area WUA ; minimitappning; HEC-RAS; salmo; Helge å; den nationella planen för omprövning av vattenkraft NAP ; Technology and Engineering;

    Abstract : Hydropower is the dominant source of electricity in Sweden, constituting 45% of the national supply. While pivotal for decarbonization and climate goals, its environmental impact on freshwater biodiversity is concerning. READ MORE

  5. 4. Evaluation of restoration efforts in Dalälven - conditions for survival rate of Salmo trutta and Salmo salar

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Ville Svärd; [2023]
    Keywords : Restoration; river; salmonids; benthic fauna;

    Abstract : Rivers are among the most anthropogenically affected ecosystems in the world by irrigation, transportation, channelizing, and hydropower. Habitat restorations have become a popular method to restore the heterogeneity and complexity of rivers aiming for improvement of biodiversity. READ MORE

  6. 5. 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