Search for dissertations about: "ecological restoration"
Showing result 6 - 10 of 33 swedish dissertations containing the words ecological restoration.
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6. Ecological restoration of natural disturbances in boreal forests
Abstract : Worldwide declines in biodiversity have accentuated the need for conservation actions. Unfortunately, the decline is unlikely to be reversed by traditional conservation alone. Instead the practice of ecological restoration has come to play an ever increasing role. READ MORE
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7. Plant ecological studies related to restoration of a degraded ecosystem in central Tanzania
Abstract : Kondoa Irangi area is among the most degraded ecosystems in Central Tanzania as a result of heavygrazing, fire, collection of fuelwood and improper cultivation practices. The restoration process of thisdegraded ecosystem through natural regeneration is slowed by the semi-arid climate of the area combinedwith poor soil nutrient status. READ MORE
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8. Unravelling Sustainability : The complex dynamics of emergent environmental governance and management systems at multiple scales
Abstract : This thesis adopts a complex systems approach to investigate the dynamic emergence of sustainable environmental governance and management systems in multiple contexts in Europe. Accelerating rates of environmental degradation across the world have called the legitimacy of previous environmental governance and management arrangements into question. READ MORE
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9. Seed dynamics and the ecological restoration of hill slopes of Kondoa Irangi, Central Tanzania
Abstract : Improper agricultural practices such as bill slope cultivation, extensive clearing of vegetation using fire over a long period, and to some extent overgrazing have converted the once fertile hill slopes of Kondoa Irangi in central Tanzania into unproductive marginal land. It is 25 years now since reclamation measures were introduced to save the hills from further degradation, but the regeneration process, has been rather slow. READ MORE
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10. Gradients of time and complexity : understanding how riparian and instream ecosystems recover after stream restoration
Abstract : Why evaluations of the ecological outcomes of stream and river restoration have largely reported inconclusive or negative results has been the subject of much debate over the last decade or more. Understanding the reasons behind the lack of positive results is important for bettering future restoration efforts and setting realistic expectations for restoration outcomes. READ MORE