Search for dissertations about: "agricultural decline"
Showing result 1 - 5 of 58 swedish dissertations containing the words agricultural decline.
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1. Tempo-spatial patterns of foraging by birds in mosaic agricultural landscapes
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
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2. Local and landscape-level impacts of agricultural intensification on arthropod communities and their interaction networks
Abstract : Arthropods play a central role in agricultural landscapes being responsible for the delivery of many ecosystem services such as pollination, biological pest control, and nutrient cycling. But the current global decline of arthropods is intensified by habitat modification, loss and fragmentation, pesticide use and other intensive management practices. READ MORE
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3. Growth and decline in rural Sweden : geographical distribution of employment and population 1960–2010
Abstract : This thesis investigates the combination of changes in the population and employment into sectors in rural Sweden for the period 1960-2010. The aim is to describe and analyze the demographic changes together with the labour market changes, and to account for the spatial outcome of these changes by considering the heterogeneity of rural areas. READ MORE
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4. Agroforestry systems with trees for biomass production in western Kenya
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
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5. Micronutrients in temperate forage crops grown in Sweden : species differences and effects of phenological development and soil
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