Sökning: "Abramis brama"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Abramis brama.

1. 1. Life Cycle Assessment of Minced Bream : A case study performed in collaboration with Axfoundation

   Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

   Författare :Katja Andersson; [2021]
   Nyckelord :Life cycle assessment; LCA; Bream; Abramis brama; Minced bream; Carp cyprinids; Sustainable protein; Livscykelanalys; LCA; Braxen; Abramis brama; Braxenfärs; Karpfiskar; Hållbart protein;

   Sammanfattning : The need for more sustainable protein sources is growing globally due to the significant climate impact from the food system and the estimated population growth. Although vegetarian protein sources have been proven to be sustainable alternatives, there may exist additional resources that currently are not utilized but potentially could contribute as sustainable protein sources. LÄS MER

3. 2. Changes in the fish community in Lake Tåkern, Sweden - a comparison between 1978-1979 and 2019

   Master-uppsats, Linköpings universitet/Biologi

   Författare :Manfred Skog; [2020]
   Nyckelord :Fish community; Shallow lakes; Test-fishing; Establishment of species; Crucian carp; Bream; Winter hypoxia;

   Sammanfattning : Climate changes alter species composition in both aquatic and terrestrial ecosystems. For establishment of species in a fish community, dispersal barriers, habitat structure and interactions between species act as a filter. LÄS MER

4. 3. Förvaltningsplan för Ringsjöns rovfiskbestånd - Problemidentifiering och förslag till åtgärdsplan

   Kandidat-uppsats, Lunds universitet/Examensarbeten i biologi

   Författare :Patrik Larsson; [2018]
   Nyckelord :Biology and Life Sciences;

   Sammanfattning : Eutrofiering är ett världsomspännande problem för sötvatten. Höga tillflöden av fosfor leder till försämrade förutsättningar för många typer av rovfiskar såsom abborre (Perca fluviatilis) och gädda (Esox lucius). LÄS MER

5. 4. Natural migration barriers for fish by hydropower plants : methods to assess historic passability. Case studies of migration barriers

   Master-uppsats, SLU/Dept. Of Aquatic Resources

   Författare :Johansson Anders; [2016]
   Nyckelord :natural migration barriers; historic passablility; reference connectivity; connectivity; fish; brown trout; eel; hydropower;

   Sammanfattning : Is it necessary to build fishways at all artificial migration barriers to restore and sustain bio-diversity? Hydropower plants have often been built at places where a difference in height has been used to gain more power, leading to the hypothesis that many hydropower dams have been built at natural migration barriers. How are Swedish running waters (not large rivers) assessed with respect to historical passability for fish at natural migration barriers and dams? How does one study a specific location with respect to the historical passability for different fish species? The methodologies that are evaluated in this thesis are relevant and specific information from a habitat mapping from Värmland County, where 2 903 km waterways already have been surveyed. LÄS MER

7. 5. Mellanskarven (Phalacrocorax carbo sinensis) i Krankesjön - Analys av långtidserier av skarvförekomster och fisksamhällets utveckling i kombination med bytesval

   Master-uppsats, Lunds universitet/Miljövetenskaplig utbildning

   Författare :Jonathan Loive; [2015]
   Nyckelord :Earth and Environmental Sciences;

   Sammanfattning : This study analyzed highly detailed long-term information about occurrence of cormorants (Phalacrocorax carbo sinensis) and the fish community composition in lake Krankesjön, southern Sweden. Moreover, cormorant predation with regards to species and size preference were estimated using data from recovered PIT (Passive Integrated Transponders) tags. LÄS MER