Essays about: "arthropod"

Showing result 1 - 5 of 29 essays containing the word arthropod.

  1. 1. Population dynamics of the spruce bark beetle Ips typographus in forest conservation areas and the interaction with biodiversity and natural enemies

    University essay from SLU/Dept. of Ecology

    Author : Evelina Andersson; [2023]
    Keywords : spruce bark beetle; population dynamics; conservation areas; biodiversity; natural enemies; species richness; managed forests; woodland key-habitats; nature reserves;

    Abstract : Biodiversity is rapidly decreasing and in need of more conservation efforts. However, the tree-killing European spruce bark beetle, Ips typographus (L.), has made forest conservation controversial by affecting conservation areas and possibly adjoining managed forests, yet is still a keystone species leaving decaying wood promoting biodiversity. READ MORE

  3. 2. Parapeytoia yunnanensis: The organism that connects the upper stem-group euarthropods

    University essay from Uppsala universitet/Paleobiologi

    Author : Sebastian Axel Cockfield Larsson; [2023]
    Keywords : ;

    Abstract : The study of euarthropod evolution in the Cambrian is challenging due to controversies surrounding the identification of various anatomical features. Radiodontans are supported to be a monophyletic group to the lower stem of euarthropods. READ MORE

  4. 3. Effects of diversified cropping on arthropod communities

    University essay from SLU/Dept. of Ecology

    Author : Eira Eksvärd; [2022]
    Keywords : carabids; spiders; traits; organic amendments; ley legacy effects;

    Abstract : Även intensiva moderna jordbruk är beroende av ekosystemtjänster som organismer bidrar med såsom biologisk bekämpning av skadedjur. Effekten av biodiversitet på ekosystemprocesser förklaras inte i tillräcklig grad av taxonomisk mångfald, utan beror snarare på mångfalden av funktionella egenskaper bland arterna. READ MORE

  5. 4. Leddjurssammansättningen i kenyanska majsfält : vilken inverkan har altitud och push-pull på rovdjurssamhällen?

    University essay from SLU/Dept. of Ecology

    Author : Johanna Viker; [2021]
    Keywords : altitud; diversitet; Kenya; majs; push-pull; rovdjur;

    Abstract : Samodling med push-pull används inom majsodling som växtskyddsstrategi mot skadegörande fjärilslarver. Genom att erbjuda alternativa resurser och gynnsamt mikroklimat kan systemet skapa förutsättningar för att gynna rovlevande leddjur som utför biologisk bekämpning på skadedjuren. READ MORE

  6. 5. Intercropping oats with annual clovers : effects on yields and aspects of biodiversity

    University essay from SLU/Dept. of Ecology

    Author : Anna Douhan Sundahl; [2021]
    Keywords : intercropping; cover cropping; pollinators; natural predators; weeds; clover; oats;

    Abstract : The use of fertilizers, pesticides and herbicides has contributed to greatly increase the crop yields per hectare. Humanity has become reliant on artificial inputs overshadowing usage of resources from ecosystem services that we continue to weaken further, by using agricultural practises decreasing landscape and species diversity. READ MORE