Essays about: "fish"

Showing result 1 - 5 of 829 essays containing the word fish.

  1. 1. Predicting Treatment Performance Using Ternary Plot : Macronutrients’ impact on biomass conversion efficiency

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Madeleine Gobl; [2022]
    Keywords : Black soldier fly; organic waste treatment; biomass conversion efficiency; treatment performance; macronutrients; ternary plot; organic waste; amerikansk vapensflugan; triangulär diagram; organiskt avfallsbehandling; organiskt avfall; behandlingseffektivitet; biomassomvandlings-effektivitet; makronäringsämnen;

    Abstract : Black soldier fly larvae (BSFL) waste treatment is becoming a more sought-after organic waste treatment since it produces larvae for animal feed as well as fertilizer, the need for prediction and optimization of treatment performance increases. This study aims to predict biomass conversion efficiency (BCE) for waste going into treatment, using only the nutritional data from other studies as it could give a good performance estimation while using available data. READ MORE

  2. 2. A Comprehensive Review of the Factors Influencing the Environmental Impact of different Species bred in Closed Land-based Recirculating Aquaculture Systems

    University essay from Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)

    Author : Siri Samuelsson; [2022]
    Keywords : Recirculating aquaculture system; renewable electricity; Feed Conversion Ratio; environmental impact; freshwater eutrophication; climate change; land use; cumulative energy use; acidification; Earth and Environmental Sciences;

    Abstract : Today the future supply of seafood is threatened due to human activities which, among other things, has led to overfishing. However, more environmental friendly initiatives of producing seafood have emerged, such as Recirculating Aquaculture Systems (RASs). READ MORE

  3. 3. Stress och beteende vid bedövning av öring

    University essay from SLU/Dept. Of Aquatic Resources

    Author : Victoria Welander; [2022]
    Keywords : stress; bedövning; öring;

    Abstract : I samband med att fiskar har blivit allt vanligare inom områden som forskning, odling och miljöövervakning har behovet av att säkerställa god djuromsorg blivit mer uppmärksammat. För att minska fiskens stress och underlätta den fysiska hanteringen brukar bedövningsmedel användas i många sammanhang. READ MORE

  4. 4. 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

  5. 5. Temporal, climatic and spatial variation in the distribution and activity patterns of the raccoon (Procyon lotor) in Hainich National Park, Germany

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

    Author : Maria Grüneberger; [2022]
    Keywords : raccoon; procyon lotor; hainich National Park; canopy Walk; camera trapping; nocturnality; ground temperature; habitat preference; european beech; fagus sylvatica; anthropogenic influence;

    Abstract : The raccoon (Procyon lotor) has been a part of German fauna since the 1920s, following a number of releases and escapes from captivity. This study intends to investigate the distribution and activity patterns of this non-native mesopredator in Hainich National Park, which lies in Central Germany, in-between 3 core areas of established raccoon populations. READ MORE