Klimaatwetenschappers proberen om zo accuraat mogelijke voorspellingen te doen over hoe het klimaat zal veranderen als gevolg van de huidige opwarming van de aarde. Informatie over hoe verschillende klimaatvariabelen (zoals temperatuur en neerslag) in het verleden op elkaar hebben ingewerkt, kan bijdragen aan de interpretatie van de huidige trends en het verbeteren van de klimaatmodellen die worden gebruikt voor deze voorspellingen. Aangezien weergegevens pas sinds de laatste eeuw structureel worden gemeten, maken klimaatwetenschappers gebruik van 'proxies', een meetbare grootheid die langdurig bewaard kan blijven en kenmerkend is voor bepaalde klimatologische omstandigheden in het verleden. In dit proefschrift wordt de betrouwbaarheid van de proxies getest door de relatie tussen klimaatvariabelen en het voorkomen van de membraanmoleculen in het moderne systeem te bestuderen. Daarnaast is het belangrijk om na te gaan of deze relaties ook op lange tijdschalen standhouden. Daarom is onderzocht wanneer in de geologische geschiedenis van het Chalameer de opbouw van de waterkolom vergelijkbaar werd met die van het huidige systeem en de klimaat proxies dus toepasbaar zijn. De uiteindelijke klimaatreconstructie beslaat de laatste 170.000 jaar en zal waarschijnlijk een cruciale bijdrage leveren aan het voorspellen van toekomstige klimaatveranderingen in Oost-Afrika.

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Mw. M. Ataa-Asantewaa promoveert op het proefschrift: 'Uncovering Smallholder Heterogeneity: an Analysis of Diverging Livelihood Trajectories and Outcomes of Engagement in Tree-Crop Value Chains in Ghana'. Promotor is dr. M.A.F. Ros-Tonen. Copromotoren zijn prof. dr. J. Gupta en dr. C.B. de Steenhuijsen Piters.

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Mw. S. Kroeze promoveert op het proefschrift: 'HIV-Related Immune Dysregulation During Antiretroviral Therapy in Sub-Saharan Africa'. Promotor is prof. dr. T.F. Rinke de Wit. Copromotoren zijn dr. R.L. Hamers en dr. N.A. Kootstra.
Kerngegevens van evenement Hiv-gerelateerde immuundysregulatie tijdens antiretrovirale therapie in sub-sahara-Afrika

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This event will be held physically in Leiden. For registrees who cannot travel to Leiden a link to an online platform will be sent one day before the start of the event. This lecture by Prof. Peter Little (Emory University) addresses the litany of different development approaches from the perspectives of marginal populations and geographies in rural Africa. Based on the author’s long-term research in eastern Africa, it uses the dual lenses of pastoralist communities and drylands to demonstrate how large-scale development paradigms interact and, in some cases, are shaped by local social and political dynamics. In doing so, the lecture argues that the periphery can be central to understandings of sustainable development and resilience. Over a period of several decades multiple development paradigms based on shared narratives and assumed understandings have been imposed in these regions both by international donor agencies and African governments, leading to contradictory and often unexpected outcomes. It shows how different interventions are interpreted and often shaped by local agency and politics, resulting in both negative and, in some cases, positive development results. The presentation concludes that in this contemporary period of increased global uncertainty, especially related to climate variability, much can be learned from the experiences of the periphery and its resilient populations and ecologies. Speaker: Prof. Peter Little

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This event will be held physically in Leiden. For registrees who cannot travel to Leiden a link to an online platform will be sent one day before the start of the event. Despite cultural differences and socio-economic disparities, (other) animals, particularly those kept as companions are becoming increasingly significant within a diversity of South African communities. Pet-keeping cuts across all socio-economic categories and public opinion regarding the status of animals in general is currently a subject of contestation and debate. This has both legislative and policy implications.
This presentation by Dr Sharyn Spicer (University of the Western Cape) briefly traces local ‘animal’ history to demonstrate how other animal species have been involved in several pivotal moments in our past and present. It uses a social justice lens, the concept of intersectionality combined with African philosophical insights and cosmologies to shed light on human-animal relationships and to develop contextually appropriate and culturally competent animal welfare interventions. The overall aim of this presentation  is to imagine and ultimately put into practice a decolonial animal future.  By looking inward and going beyond western knowledge and insights from the Global north, new understandings and actions that draw on indigenous knowledges, are able to take place. Underlying the indigenous concept of ubuntu is the ethic of reciprocity, interdependence and compassion, which can be extended to other living beings so that everything is seen as connected. The intrinsic value of other animals, who are viewed as community members or kin is recognised. Speaker :Dr Sharyn Spicer

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