Search for dissertations about: "agricultural decline"

Showing result 1 - 5 of 49 swedish dissertations containing the words agricultural decline.

  1. 1. Tempo-spatial patterns of foraging by birds in mosaic agricultural landscapes

    University dissertation from ; Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences

    Author : Adriaan De Jong; Sveriges lantbruksuniversitet.; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Many farmland breeding bird populations decline, while large herbivorous bird species, which forage on farmland outside the breeding period, increase their numbers. Intensification of agriculture causes both processes. READ MORE

  2. 2. Agroforestry systems with trees for biomass production in western Kenya

    University dissertation from ; Department of Forest Ecology and Management, Swedish University of Agricultural Sciences

    Author : Hans Sjögren; Sveriges lantbruksuniversitet.; [2015]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Low agricultural production and a decline in fuelwood resources are serious constraints for subsistence smallholder farmers in western Kenya in the sub-Saharan African region. Furthermore, low soil fertility and general environmental degradation has contributed to the build-up of the parasitic weed Striga hermonthica. READ MORE

  3. 3. Micronutrients in temperate forage crops grown in Sweden : species differences and effects of phenological development and soil

    University dissertation from ; Dept. of Crop Production Ecology, Swedish University of Agricultural Sciences

    Author : Bodil Lindström; Sveriges lantbruksuniversitet.; [2013]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Forage crops are the most important feed for ruminants and provide energy, fibre and protein as well as essential micronutrients such as cobalt (Co), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo) and zinc (Zn). In this thesis, different aspects of the micronutrient concentrations of forage crops were investigated in temporary grasslands in Sweden. READ MORE

  4. 4. Human factors in mechanized cut-to-length forest operations

    University dissertation from ; Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences

    Author : Carola Häggström; Sveriges lantbruksuniversitet.; [2015]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Although forest operations research has a more than 50-year-long tradition in the field of human factors, there is a current decline in resources put on continuous and systematic human factors research. Therefore, the overall aim of this thesis was to contribute new knowledge on working conditions in mechanized cut-to-length logging operations and their relationship to system performance. READ MORE

  5. 5. Restoring dipterocarp rainforest diversity : tree regeneration, life-history traits and the light factor

    University dissertation from ; Department of Forest Ecology and Management, Swedish University of Agricultural Sciences

    Author : Malin Gustafsson; Sveriges lantbruksuniversitet.; [2016]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Rainforest restoration is an important application in today’s multipurpose management of secondary forests. In the Malaysian state Sabah (Borneo) most forests have been selectively logged, but many still hold potential for high biodiversity and carbon sequestration, as well as future timber production. READ MORE