Sökning: "Pinus species"

Visar resultat 11 - 15 av 174 uppsatser innehållade orden Pinus species.

  1. 11. Heterobasidion spp presence in young pine plantations in southern Sweden

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Sarah Louise Gore; [2023]
    Nyckelord :Heterobasidion; Scots pine; Pinus Sylvestris; Sweden;

    Sammanfattning : Heterobasidion species cause great economic loss the forest industry in the northern hemisphere. The spread of infection takes two forms, the first is an airborne infection and the second is a vegetative infection from infected root to healthy root. Much research has been done concerning the Heterobasidion pathogen. LÄS MER

  3. 12. Differences and similarities in stand characteristics after prescribed burning and wildfire : implications for conservation of forest biodiversity

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Hannah Sophie Jakob; [2023]
    Nyckelord :coarse woody debris; conservation; biodiversity; boreal forest; Daldinia loculata; Fennoscandia; prescribed burning; regeneration; wildfire; woodpecker;

    Sammanfattning : 1. Wildfires are a natural disturbance in the boreal forests of Fennoscandia and have shaped and formed forests in the past, resulting in very heterogeneous forests containing large amounts of dead and living trees in various age classes. LÄS MER

  4. 13. Ectomycorrhizal fungi community shift along gradient from forest to clearcut : two field seasons after harvest of old growth Scots pine forests

    Master-uppsats, SLU/Dept. of Forest Mycology and Plant Pathology

    Författare :Linda Johannesson; [2023]
    Nyckelord :biodiversity; ectomycorrhiza; retention trees; ; fungi; clearcutting;

    Sammanfattning : It is known that the number of ECM decline and the community composition is altered by clearcutting. This study aims to investigate impacts at a more detailed scale. LÄS MER

  5. 14. Effekten av Årsringsbredd, Sommarvedsandel, Svällning och Växtplats på Utvalda Mekaniska Egenskaper av Contorta (Pinus Contorta)

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Carl Holmquist; [2023]
    Nyckelord :lodgepole pine; latewood; latewood ratio; year ring; growth ring; growth ring width; swelling; bending strength; Contorta; sommarved; sommarvedsandel; årsring; årsringsbredd; medelårsringsbredd; svällning; korrelation; växtplats; hållfasthet; böjhållfasthet; e-modul; elasticitet; densitet;

    Sammanfattning : I dagsläget finns ca 600 000 ha Contortaskog i Sverige varav en stor del planterades runt 70- till 80-talet. Contorta har sitt ursprung i västra USA och Kanada och introducerades i Sverige som en lösning på en förutspådd fibersvacka. LÄS MER

  7. 15. The effect of heat and UVC treatments on seed germination and seed-borne fungi of Pinus sylvestris, Pinus contorta and Pseudotsuga menziesii used in Swedish nurseries

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Wiktoria Breza; [2023]
    Nyckelord :seed-borne pathogens; artificial regeneration; conifers; thermotherapy;

    Sammanfattning : Pathogen free seeds are critical to produce healthy plants for forest regeneration. However, recent studies have shown that tree seed carry a high diversity of fungi including known and unknown pathogens. LÄS MER