Sökning: "earthworm"

Visar resultat 1 - 5 av 20 uppsatser innehållade ordet earthworm.

  1. 1. Effects of tillage and straw treatments on earthworm abundance : study in two Swedish long-term field trials

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Soil and Environment

    Författare :Fredrik Ahlberg; [2023]
    Nyckelord :anecic; conventional tillage; endogeic; no-tillage; reduced tillage;

    Sammanfattning : Earthworms have several functions in the soil, for instance redistribution of organic matter and enhancing plant available nutrients. Earthworms are divided into three ecological groups, with different functions in the soil. The groups are: anecic, endogeic and epigeic. LÄS MER

  3. 2. Effekt av olika odlingssystem på markstruktur och avkastning : pargårdsstudie i Skåne

    Uppsats för yrkesexamina på grundnivå, SLU/Dept. of Soil and Environment

    Författare :Clara Kihlstrand; Linnéa Frisk; [2023]
    Nyckelord :Markhälsa; reducerad jordbearbetning; ; Conservation Agriculture; plöjning; mellangröda; höstvete; aggregatstabilitet; daggmaskar; pH; dragkraft; infiltration; vattenhalt;

    Sammanfattning : Metoderna att odla jordbruksmark är många. Dessa odlingssystem påverkar markstrukturen och markhälsan på olika vis. Markhälsa är ett begrepp som blir allt viktigare. Under 2023 kommer EU med nya markdirektiv som ska säkra långsiktig odling och hjälpa till att nå klimatmålen. LÄS MER

  4. 3. Distribution and transport of microplastics and metals in sewage sludge-amended agricultural soil : a Comparative study between microplastics copper, cadmium, and nickel

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Nora Ottander; [2022]
    Nyckelord :Bioturbation; advective transport; earthworm; Aporrectodea longa;

    Sammanfattning : This thesis investigated the vertical transport of microplastics and metals in agricultural soil after sewage sludge application. Sewage sludge is commonly used in agriculture for adding nutrients and carbon to improve the soil quality. LÄS MER

  5. 4. Hur påverkas markorganismerna av jordbruksmetoden strukturkalkning?

    Kandidat-uppsats, Lunds universitet/Miljövetenskaplig utbildning

    Författare :Maria Gustavsson; [2021]
    Nyckelord :structural liming; agriculture; microorganisms; clay soil; respiration; earthworm population; Earth and Environmental Sciences;

    Sammanfattning : This field study was done to get an understanding of how the agricultural method called “structural liming” might affect soil organisms in a negative way. Soil organisms are crucial as they perform biological processes that improve good soil structure. This is important as it enables sustainable food production, today, and in the future. LÄS MER

  7. 5. Leachate-Based Biotic Ligand Model for Soil : Ecotoxicological Risk Assessment of Copper for Invertebrates, Plants, and Soil Microbial Processes

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

    Författare :Tove Florén; [2021]
    Nyckelord :Tomato shoot; Barley root; Glucose induced respiration; Nitrification; Earthworm; Springtail; EC10; SSD; Regression analysis; pH dependency; Bioavailability;

    Sammanfattning : Environmental pollution of heavy metals has become an increasing problem. Environmental risk assessments can be conducted to investigate and determine the potential risk of polluted terrestrial environments. Traditionally, risk assessments are based on total soil metal concentrations on a dry weight basis. LÄS MER