Sökning: "encroachment"

Visar resultat 16 - 20 av 24 avhandlingar innehållade ordet encroachment.

  1. 16. Small biotopes in agricultural landscapes: importance for vascular plants and effects of management

    Författare :Therese Irminger Street; Biodiversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Small biotopes; incidental habitat; vascular plants; woody vegetation; grassland species; resource provisioning; species richness; habitat specificity; non-crop habitat; landscape complexity; heterogeneity; local management; agri-environment scheme;

    Sammanfattning : As a consequence of agricultural intensification, large areas of non-crop habitat have been lost and farmland biodiversity has declined. Previous studies have shown that the extent of non-crop habitat influences farmland biodiversity, but the relative importance of different habitat types is less well known and the contribution of small incidental habitats to landscape-scale species richness is not fully understood. LÄS MER

  2. 17. Optimizing processes for biological nitrogen removal in Nakivubo wetland, Uganda

    Författare :Joseph Kyambadde; Gunnel Dalhammar; Karin Tonderski-Sundblad; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environmental technology; Ammonium-oxidizing bacteria; Biological nitrogen removal; Coliform retention; Constructed wetlands; Cyperus papyrus; Miljöteknik; Environmental engineering; Miljöteknik;

    Sammanfattning : The ability of Nakivubo wetland (which has performed tertiary water treatment for Kampala city for the past 40 years) to respond to pollution and to protect the water quality of Inner Murchison Bay of Lake Victoria was investigated. The aim of this study was to assess the capacity of Nakivubo wetland to remove nitrogen from the wastewater after its recent encroachment and modification, in order to optimize biological nitrogen removal processes using constructed wetland technology. LÄS MER

  3. 18. Housing clusters for densification within an upgrading strategy : the case of Kampala, Uganda

    Författare :Assumpta Nnaggenda-Musana; Dick Urban Vestbro; Tumsifu Nnkya; KTH; []
    Nyckelord :low-income housing; home-based enterprises; house types; residential density; urban sprawl; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP;

    Sammanfattning : The process of urbanisation in the urban centres of most sub-Saharan African countries has been brought about by numerous factors including rural to urban migration, natural increase in population, and in-migration. In Uganda due to these factors the capital city Kampala is growing rapidly. LÄS MER

  4. 19. Impact of climate warming on Arctic plant diversity: phylogenetic diversity unravels opposing shrub responses in a warming tundra

    Författare :Ruud Scharn; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Arctic; Oroarctic; Tundra; long-term warming; soil moisture; vegetation change; shrubification; biodiversity; phylogenetic diversity; plant community structure;

    Sammanfattning : The Arctic biome is at significant risk, with recent observations suggesting that climate change is warming the Arctic nearly four times faster than the global average. Last decade, evidence from experimental warming studies and observations of ambient warming over time shows how increasing air temperature in the Arctic has led to changes to arctic vegetation, and encroachment of trees and shrubs into the tundra. LÄS MER

  5. 20. Livet, identiteten och kronisk sjukdom. En socialpsykologisk studie av unga vuxna diabetiker : Life, identity and chronic illness - A socio-psychological study of young adult diabetics

    Författare :Ingbritt Öhrn; Göteborgs universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; life event; routinising; identity; reflexivity; relation; ambivalence; consolidation; empowerment.;

    Sammanfattning : This thesis is intended to give an insight into what it entails to contract and live with a chronic illness in today's society. How is being taken il! experienced and perceived as a life event, and how does the individual's attitude develop over time? The study is prospective and is planned on the basis of a trajectory perspective. LÄS MER