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Showing result 1 - 5 of 34 essays matching the above criteria.

  1. 1. Environmental factors affecting European spruce bark beetle (Ips typographus) outbreaks in Sweden : Linking AI-detected dead spruce, soil moisture, nature protection and bark beetle outbreak (Ips typographus) in Sweden

    University essay from Karlstads universitet

    Author : Petter Hessle; [2023]
    Keywords : Ips typographus; Biology; forest; Norway spruce; Picea abies; European spruce bark beetle; Ecology; outbreak; Ai; Sweden; Biologi; ekologi; skog; Granbarkborre; gran; Ai; utbrott; naturvård; Ips typographus; sverige;

    Abstract : Norway spruce (Picea abies) is a vital tree species in Sweden's extensive forested landscape. However, the planting of spruce beyond its natural range has made it vulnerable to pests like the spruce bark beetle (Ips typographus), which has caused substantial damage to Swedish forests. READ MORE

  3. 2. Predicting the future summer range of a declining Arctic waterfowl: the Greenland White-fronted Goose (Anser albifrons flavirostris)

    University essay from

    Author : Emil Lundahl; [2022]
    Keywords : ;

    Abstract : This study investigates what the future might hold for an endemic goose species, found exclusively in the low Arctic region of West Greenland. Facing a decline since four decades, the Greenland White-fronted Goose constitutes one of few goose populations showing a declining trend. READ MORE

  4. 3. Hur mår hästkastanjen egentligen? : utbredning och hantering av skadegörare på Aesculus hippocastanum i svenska städer

    University essay from SLU/Dept. of Plant Protection Biology

    Author : Carolin Lundgren; Linnea Svensson; [2022]
    Keywords : kastanjemal; hästkastanjsköldlus; kastanjebladbränna; kastanjeblödarsjuka; Phytophthora; diversitet; växtskydd; urban miljö; stadsträd;

    Abstract : Hästkastanjen, Aesculus hippocastanum, har genom åren varit ett mycket välanvänt stadsträd med höga kulturhistoriska och sociala värden. På senare tid har arten sjunkit i popularitet då den drabbats av flertalet skadegörare och sjukdomar. READ MORE

  5. 4. Förekomst av rådjur och dovhjort i förhållande till varandra : möjliga effekter av födokonkurrens

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Olof Skoglund; Axel Lomander; [2022]
    Keywords : dovhjort; rådjur; avskjutning; konkurrens; föda;

    Abstract : Competition in ecosystems can occur in different ways and it is especially important to understand the competition due to well-functioning game management in order to predict what will happen to the competitive situation if something change in the ecosystem. Competition between herbivores can limit certain ecosystem services or lead to a reduction in the biodiversity. READ MORE

  6. 5. Sumatranoshörningen (Dicerorhinus sumatrensis) på gränsen till utrotning - En riskanalys

    University essay from Lunds universitet/Miljövetenskaplig utbildning

    Author : Amanda Gagné; [2021]
    Keywords : Sumatran rhinoceros; risk assessment; threats; conservation; Indonesia; Earth and Environmental Sciences;

    Abstract : The critically endangered Sumatran rhinoceros (Dicerorhinus sumatrensis) has, due to previous hunting and habitat loss, diminished to a few non-viable and fragmented populations. Despite a relatively large amount of conservation efforts during the last 30 years, numbers are still declining. READ MORE