188 research outputs found

    A Superconducting Beam Line

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    The humanitarian theatre

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    This article aims to rekindle the debate on the politics of aid in the increasingly common – yet still under-studied – authoritarian and low-intensity conflict settings, detailing the case of Ethiopia in 2016, when a 50-year drought coincided with a wave of protests and a state of emergency. During four months of qualitative fieldwork in 2017, state, civil society, Ethiopian and international actors were approached – from humanitarian headquarters to communities in the Amhara, Oromiya and Somali regions. Research participants relayed stark discrepancies between the humanitarian theatre's ‘frontstage’, where disaster responders showcase an exemplary response, and its ‘backstage’, where they remove their frontstage masks and reflect on the information, the decision-making monopoly of the state and the intrusion of conflict dynamics into the humanitarian response. In humanitarian research and in policy, a collective conversation is necessary on where to draw the line between respect for governments’ sovereignty and the intrusion of humanitarian principles

    Bio-energetic modeling of medium-sized cetaceans shows high sensitivity to disturbance in seasons of low resource supply

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    This research was supported by the Office of Naval Research grant N00014-16-1-2858: "PCoD+: Developing widely-applicable models of the population consequences of disturbance”. VH and AMdR benefitted from funding from the European Research Council under the European Union’s Seventh Framework rogramme (F /2007-2013) / ERC Grant Agreement No. 322814 awarded to AMdR.Understanding the full scope of human impact on wildlife populations requires a framework to assess the population‐level repercussions of nonlethal disturbance. The Population Consequences of Disturbance (PCoD) framework provides such an approach, by linking the effects of disturbance on the behavior and physiology of individuals to their population‐level consequences. Bio‐energetic models have been used as implementations of PCoD, as these integrate the behavioral and physiological state of an individual with the state of the environment, to mediate between disturbance and biological significant changes in vital rates (survival, growth, and reproduction). To assess which levels of disturbance lead to adverse effects on population growth rate requires a bio‐energetic model that covers the complete life cycle of the organism under study. In a density‐independent setting, the expected lifetime reproductive output of a single female can then be used to predict the level of disturbance that leads to population decline. Here, we present such a model for a medium‐sized cetacean, the long‐finned pilot whale (Globicephala melas). Disturbance is modeled as a yearly recurrent period of no resource feeding for the pilot whale female and her calf. Short periods of disturbance lead to the pre‐weaned death of the first one or more calves of the young female. Higher disturbance levels also affect survival of calves produced later in the life of the female, in addition to degrading female survival. The level of disturbance that leads to a negative population growth rate strongly depends on the available resources in the environment. This has important repercussion for the timing of disturbance if resource availability fluctuates seasonally. The model predicts that pilot whales can tolerate on average three times longer periods of disturbance in seasons of high resource availability, compared to disturbance happening when resources are low. Although our model is specifically parameterized for pilot whales, it provides useful insights into the general consequences of nonlethal disturbance. If appropriate data on life history and energetics are available, it can be used to provide management advice for specific species or populations.Publisher PDFPeer reviewe
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