Essays about: "natural selection"

Showing result 1 - 5 of 240 essays containing the words natural selection.

  1. 1. Privatträdgårdens potential som resurs för gynnande av pollinationssamhällen

    University essay from SLU/Dept. of Landscape Architecture, Planning and Management (from 130101)

    Author : Karin Ericsson; [2024]
    Keywords : Pollinatörer; Biologisk mångfald; Urbanisering; Gynnande åtgärder; Påverkansfaktorer;

    Abstract : I detta arbete undersöks hotbilden mot de viktigaste pollinatörerna i Sverige, påverkansfaktorer samt vilka handlingsalternativ som finns för privatpersoner med engagemang i frågan. I dagsläget är många viktiga pollinatörer globalt och nationellt hotade, och därmed också de ekosystemtjänster som vi människor drar nytta av dagligen. READ MORE

  3. 2. The effect of the COVID-19 lockdown on the spatial ecology of moose in an area with high recreational activity

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Maximilian Dörr; [2024]
    Keywords : Moose; Alces alces; habitat selection; tourism; human disturbance; activity; movement; speed; seasons; Covid-19; pandemic;

    Abstract : In diverse landscapes, the coexistence of wildlife habitat requirements and human land use often leads to conflicts, posing challenges for sustainable species management. Recreational activities, especially in sparsely populated areas, frequently disturb wildlife behavior, necessitating a comprehensive assessment of anthropogenic impacts on habitats. READ MORE

  4. 3. Shifting focus from yields to food supply : an evaluation of the ‘number of people fed per hectare’ indicator at farm and national level

    University essay from SLU/Department of Molecular Sciences

    Author : Ida Ekqvist; [2024]
    Keywords : Land use efficiency; Sustainability indicators; Agricultural productivity; Food production;

    Abstract : The challenge of feeding a growing global population while reducing the pressure on climate and ecosystems has gained much attention in research over the last decades. A crucial yet often overlooked aspect in research addressing this complex challenge is the efficiency of food production in meeting nutritional needs within the constraints of global cropland resources. READ MORE

  5. 4. Stamskador och dess uppkomst vid mekaniserad kvalitetsgallring i norra Sverige

    University essay from SLU/School for Forest Management

    Author : Lovisa Hansén; [2024]
    Keywords : skördare; faktorer; gallringskvalitet;

    Abstract : Gallring är ett ingrepp som görs i ett skogsbestånd med syfte att ta bort ett urval av träd för att gynna de kvarstående, samt att ge en intäkt i form av virke. Som skogsägare kan man prioritera vilka värden man vill gynna i sin skog; ekonomiska, sociala och/eller biologiska. READ MORE

  6. 5. Can precommercial thinning be used to create more diversity after planting spruce?

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Astrid Bygge; [2024]
    Keywords : Forestry; pre-commercial; stand structure; heterogeneity; silviculture; mixed forests; monoculture; Picea abies; Betula spp.;

    Abstract : Mixed forests will harbour other ecosystem services than a planted coniferous monoculture. This study used early results from a long-term experiment to examine if different precommercial thinning treatments can be used to increase diversity in planted stands of Norway spruce (Picea abies) mixed with high densities of natural regeneration of birch (Betula spp. READ MORE