Essays about: "utbredning"

Showing result 1 - 5 of 253 essays containing the word utbredning.

  1. 1. 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

  2. 2. Methane Sulphonic Acid in East Antarctic Coastal Firn and Ice Cores and Its Relationship with Chlorophyll-a and Sea Ice Extent in the Southern Ocean

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Emma Nilsson; [2022]
    Keywords : methane sulphonic acid; firn cores; sea ice proxy; marine primary productivity; Fimbul Ice Shelf; Dronning Maud Land; metansulfonsyra; firnkärnor; havsis-proxy; marin primärproduktion; Fimbulisen; Dronning Maud Land;

    Abstract : The seasonal retreat of sea ice in the austral spring and summer around Antarctica has a significant effect on phytoplankton activity, mainly due to light availability, meltwater input of dissolved iron, and surface water stratification. Phytoplankton produce dimethylsulfoniopropionate, the precursor to the climate-cooling gas dimethyl sulphide, which is ventilated to the atmosphere and oxidised to methane sulphonic acid (MSA). READ MORE

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

    University essay from SLU/Department 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

  4. 4. Hur påverkar mekaniskt snytbaggeskydd, markberedning, plantstorlek och plantgödsling granplantors överlevnad och tillväxt?

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

    Author : Johanna Abrahamsson; Jessica Wallgren; [2022]
    Keywords : mekaniskt snytbaggeskydd; plantstorlek; markberedning; plantgödsling; föryngringsåtgärder; vitalitet;

    Abstract : Reforestation of land entails both costs and uncertainties. Risk of pine weevil infestation, competition from other vegetation, frost and insufficient nutrient supply are some examples. READ MORE

  5. 5. Validering av marklavskartering som underlag för renskötseln : en jämförelseanalys av fältbedömd marklavsförekomst med modellbaserad lavkarta

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

    Author : Karin Nutti Pilflykt; [2022]
    Keywords : marklavskartering; rennäring; skogsbruk; Cladonia;

    Abstract : Since the 1950s, clear-cutting has been the dominant way of managing the Swedish forest. This has resulted in even aged forests and denser stands that have a negative impact on the distribution of terrestrial lichens. READ MORE