Essays about: "trofiska interaktioner"

Found 4 essays containing the words trofiska interaktioner.

  1. 1. Behavioural effects on Lymnaea stagnalis following sublethal exposure to the antidepressant fluoxetine

    University essay from Lunds universitet/Miljövetenskaplig utbildning

    Author : Jennie Hansson; [2021]
    Keywords : Ecotoxicology; Lymnaea stagnalis; fluoxetine; SSRI; Toxicity; sub-lethal; dose-response relationship; Earth and Environmental Sciences;

    Abstract : The use of selective serotonin reuptake inhibitors (SSRI), a group of antidepressants, increases globally resulting in higher concentrations also in wastewater recipients. These concentrations may cause altered behaviour of aquatic organisms and have effects on whole ecosystem level. READ MORE

  3. 2. Importance of fish community structure, nutrients and browning for shallow lake ecosystem dynamics : A modelling perspective

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Ylva Karlberg; [2019]
    Keywords : biological modelling; bowning; food webs; trophic interactions; top-down and bottom-up control; nutrients; light; shallow lake; biologisk modellering; brunifiering; födovävar; trofiska interaktioner; näring; ljus; grund sjö;

    Abstract : In a changing climate, it is increasingly important to be able to model environmental effects on food webs, and to do that, one must have appropriate dynamic models. I present a shallow lake ecosystem model where producers, grazers, carnivores, piscivores, and detritivores are coupled through resource (light, nutrients and detritus) fluxes between the benthic and pelagic habitats and through carnivore life history events (ontogenetic habitat and diet shifts). READ MORE

  4. 3. The influence of northern pike on the diet of Eurasian perch

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Karlberg Ylva; [2017]
    Keywords : Perca fluviatilis; Esox lucius; Coregonus lavaretus; trophic interactions; facilitation; Eurasian perch; northern pike; whitefish; Perca fluviatilis; Esox lucius; Coregonus lavaretus; trofiska interaktioner; facilitering; abborre; gädda; sik;

    Abstract : Top predators in aquatic ecosystems often have strong top-down effects on the ecosystem. Northern pike (Esox lucius) has been documented to cause whitefish (Coregonus lavaretus) populations to diverge into different ecomorphs. READ MORE

  5. 4. Biotiska faktorers inverkan på markstrukturen

    University essay from SLU/Dept. of Soil and Environment

    Author : Sanna Krüger Persson; [2017]
    Keywords : markstruktur; näringsväv; feedback; markorganismer; aggregat;

    Abstract : Soil structure is a key factor in the functioning of soil, including its ability to support root growth. Soil structure influences the circulation of nutrients and affects the gas exchange, and acts as habitat for the soil organisms. READ MORE