Sökning: "Can Bark"

Visar resultat 1 - 5 av 192 uppsatser innehållade orden Can Bark.

  1. 1. Exploring patterns in risk factors for bark beetle attack during outbreaks triggered by drought stress with harvester data on attacked trees: A case study in Southeastern Sweden

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Nikolaos Kouskoulis; [2023]
    Nyckelord :Geography; GIS; Geographic Information Science; Forest ecosystems; Bark beetle outbreak; Southeastern Sweden; Predisposing factors; Triggering factors; Drought stress; Earth and Environmental Sciences;

    Sammanfattning : ABSTRACT Raising temperatures and climate variability have intensified extreme weather events worldwide. These extremes can enhance and trigger possible pest outbreaks. Bark beetle attacks have become a major concern in regions with extensive spruce forest areas. Southeastern Sweden has faced repeated outbreaks resulting in widespread tree loss. LÄS MER

  3. 2. Veteranisering av ek (Quercus robur) : Effekten på artrikedomen av lavar efter tio år

    Kandidat-uppsats, Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)

    Författare :Gustaf Jansson; [2023]
    Nyckelord :veteranisation; lichens; oak; quercus robur; Veteranisering; lavar; ek; quercus robur;

    Sammanfattning : Oaks function as habitat for a myriad of species including 300 species of lichens. Many of the associated species, which are included on the Swedish red-list, depend on old oaks with hollows and deep bark fissures and hence their future is threatened due to a lack of middle-aged oaks. LÄS MER

  4. 3. Scots pine (Pinus sylvestris L.) morphological variation in the Massif Central region, France. : A study of differences in traits between populations.

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Amanda Johansson; [2023]
    Nyckelord :;

    Sammanfattning : Scots Pine (P. sylvestris L.) has one of the largest distributions among trees in Eurasia. It is important both economically and ecologically, with a dominant role in forests ecosystems. LÄS MER

  5. 4. Vad innebär säkerhet? : En visuell diskursanalys av Försvarsmaktens konstruktion av hot

    Kandidat-uppsats, Umeå universitet/Statsvetenskapliga institutionen

    Författare :Anna Bark; [2023]
    Nyckelord :Swedish Armed Forces; securitzation; gender; rights and freedoms; diversity; communication; threat;

    Sammanfattning : The purpose of this essay has been to identify and examine how the Swedish Armed Forces (SAF) create and form potential threats through the use of television commercials. Through a method of visual discourse analysis, commercials carried out by the SAF between 2015 and 2017 have been analyzed to identify and understand how the SAF talks about security and creates potential threats. LÄS MER

  7. 5. Granbarkborreangrepp i och kring naturreservat : hur påverkar åtgärder?

    Kandidat-uppsats, SLU/Dept. of Ecology

    Författare :Martin Erik Westerling; [2023]
    Nyckelord :Ips typographus; granbarkborre; åttatandad barkborre; naturreservat; naturskydd; randbarkning; barkning; skogsbruk; utbrott; bekämpning;

    Sammanfattning : Granbarkborren (Ips typographus) orsakar en stor skada i dom svenska skogarna. Från dom senaste 120 åren finns data som visar många av dom större granbarkborreangreppens påverkan. Inget utbrott finns registrerat som går att jämföra med det utbrott som startade efter den rekordvarma sommaren 2018. LÄS MER