Sökning: "Umeälven"
Visar resultat 1 - 5 av 26 uppsatser innehållade ordet Umeälven.
1. Biflödens effekt på mångfald och abundans av växter i strandzonen utmed älvar : Test av hydrochorins effekt och den longitudinella teorin
Kandidat-uppsats, Karlstads universitetSammanfattning : The riparian zone is a changeable and species-rich habitat with important ecological functions that have long been affected by human activities such as hydropower and forestry. Rivers and their adjacent riparian zones also constitute a transport route for plant parts and seeds in a form of passive transport, called hydrochory, which can contribute to the establishment of plants or the preservation of diversity in the riparian zone. LÄS MER
2. Predict sex in salmonids using motion-triggered cameras and artificial intelligence
Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : As the EU water directive starts to be implemented in Swedish law a new national plan of negotiating new environmental permits for every hydropower plant. This process will most likely result in the building of many new fish passages and ladders around the dams to allow fish and other aquatic life to pass them. LÄS MER
3. Försörjningsvillkor i brytningstid : Flottarens arbetsvillkor i förändring under 1930-talet
Kandidat-uppsats, Umeå universitet/Enheten för ekonomisk historiaSammanfattning : Living conditions in periods of transitions. Changing working conditions of the log-driver during the 1930s. Petrus Forsgren, Economic History Bachelor Degree, Umeå University Autumn 2020. LÄS MER
4. Samband mellan snödensitet och snödjup samt snödensitetens variation i terrängen i Överumans avrinningsområde
Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : Mängden vatten som når vattenkraftverken har betydelse för mängden el som kan produceras. Därav är det väsentligt att veta hur mycket vatten som finns i ett område och som kan bidra till elproduktionen. LÄS MER
5. Downstream migration and survival of Atlantic salmon (Salmo salar L.) kelts and fallbacks when passing a hydropower plant
Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : Repeat spawners of Atlantic salmon may be of great importance for population stability, the return spawners can significantly contribute to recruitment of juveniles. To have a significant proportion of repeat spawners in the population, it is necessary that salmons can successfully migrate back to the sea after spawning upriver. LÄS MER