There is currently widespread concern about the impact of continuing climate change on the distribution, and ultimately persistence of species across all the major taxa. While much previous work has focussed on using climate envelope models to make projections of the location of potential future suitable climate space for a variety of species, these can at best give an indication of the likely direction and potential magnitude of distributional change. They lack information on spatial population dynamics, dispersal, habitat suitability, local adaptation and inter-specific interactions. The aim of this thesis was to explore how some of these other factors might alter projections regarding species’ distributional change in response to climate change, using both theoretical models, and garden warbler (Sylvia borin) as a model system. A key aspect which has been largely over-looked until very recently is the complex range dynamics which can result from spatial variation in population dynamics, and the impacts of inter-annual variability rather than simply mean climate, both of which can impact extinction risk. Much insight into future impacts of climate change can also be gained through studies of past distributional changes, such as that observed in the British breeding population of garden warbler in the last three decades. In many cases, studies at smaller-scales are necessary to elucidate the mechanisms of climate change impacts and further explore potential synergies with other drivers of ecosystem change such as habitat loss and species invasions. The particular combination of factors which should be included to make projections of distributional change will be species-specific and scale-dependent, therefore modelling exercises should be carefully designed depending on the intended outcome for conservation.

Migration induced by the impacts of climate change is a complex phenomenon that consists of various concepts. It also consists of various perspectives about the cause and the effects of such migration. Regardless of these debates, however, some atoll island nations are under a threat of disappearance due the impacts of climate change, especially the rising sea levels. Migration remains the only option for these island nations. Consequently, there are numerous perspectives on how to address the arising problems due to such migration. By utilizing argumentative discourse analysis, this thesis identifies three dominant discourses that address these consequences of climate change induced migration and explores the island nation of Kiribati, although seemingly follows the lead of these dominant discourses, manages to shape and transform the discourses for the best interest of the Island Nation.

Quantifying the economic effects of climate change is a crucial step for planning adaptation in developing countries. This study assesses the economy-wide and regional effects of climate change induced productivity and labor supply shocks in agriculture in Ethiopia. The study shows, in worst case scenario, the effects on national GDP may add up to -8% with uneven regional effects ranging from -10% in agrarian regions (e.g. Amhara) to +2.5% in urbanized regions (e.g. Addis Ababa). Cost-free exogenous structural change scenarios in labor markets and transaction costs may offset about 20-30% of the ripple effects of climate change. Therefore, the ongoing structural transformation in the country may underpin the resilience of the economy to climate change. Nevertheless, given the role of agriculture in the current economic structure of the country and the potency of biophysical impacts of climate change, adaptation in the sector is indispensable. Otherwise, climate change may hamper economic progress of the country, and make rural livelihood unpredictable.

Climate change is one of the greatest challenges currectly facing humanity. Its impacts lead to the displacement of people through sea level rise, desertification, drought, flood and other ecological disaster. The global imbalance of power results in people being unequally affected by climate change. This power imbalance affects the policy-making of intergovernmental institutions and knowledge production in policy processes. This thesis conducts a policy analysis to elaborate colonial continuities that influence knowledge production on migration and climate change. Therefore, the Global Compact for Safe, Orderly, and Regular Migration (GCM) is examined. The theoretical framework of the thesis draws on knowledge and power, modernity/coloniality, and racial capitalism. Findings suggest that the influences of colonial continuities on knowledge production about climate change and migration are reflected in underlying colonial epistemological and ontological assumptions, power structures and the hegemonic discourse. Alternative knowledges, such as those contributed by civil society actors are side-lined during the process and not included in the final document. The GCM does not consider the link between environmental change and racial capitalism or colonial power imbalance, but looks at only one of the adaptation strategies and presents it as a problem: human migration. Instead of addressing the root of the problem and holding polluting countries accountable for their inaction, the GCM focuses on migration control.