164 research outputs found

    Conflict in the Congo: A Critical Assessment of Section 1502 of the Dodd-Frank Act

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    The Democratic Republic of the Congo is one of the poorest and most troubled nations in the world. With a convoluted and often tragic history, a significant cause of economic underdevelopment and political instability in the Congo has been the illicit expropriation of the country’s vast reserves of high-value minerals. In the early 2010s, Congress attempted to address the “conflict minerals” dilemma through the enactment of Section 1502 of the Dodd Frank Act. The conflict minerals rule aimed to break the supposed link between the illegal exploitation of minerals and the perpetuation of violence. Drawing upon books, journal articles, research reports, quantitative studies, and public documents, this thesis argues that while the implementation of Section 1502 coincided with the reduced presence of armed groups around 3TG mines, the regulatory model put forth under Section 1502, for better or for worse, has transformed the 3TG sector through (1) a shift in armed groups’ behavior; (2) the increased presence of the Congolese national army (FARDC) in mining areas; (3) the intensification of the unregulated gold trade; and (4) state-led formalization and monopolization

    Flying vs. climbing: Factors controlling arboreal seed removal in oak-beech forests

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    Nuts are heavy and nutritious seeds that need animals to be successfully dispersed. Most studies address nut removal by a single animal species once seeds fall onto the ground. However, nuts are also accessible before the seed drop and usually to a wide guild of seed foragers. This study examines the factorscontrollingarborealseedremoval in oak–beechforests within the whole guild of nut foragers. We found that seed-dispersing rodents (Apodemus sylvaticus) were the main acorn removers in the oaks (up to 3.75 m height), with a rapid seed encounter and a high removal rate. However, rodents did not climb the beech trees, probably due to their smoother bark in comparison to oak bark and/or the lower nutritional value of beechnuts with regard to acorns. Jays (Garrulus glandarius) were more abundant in oak stands (both dense and scattered) and clearly preferred acorns to beechnuts whereas nuthatches (Sitta europaea) were more abundant in beech stands and preferred beechnuts to acorns. Non-storing birds such as great tits (Parus major) also removed acorns and beechnuts, especially in the stands where oaks are dominant. Jays and rodents preferred sound seeds over insect-infested seeds but such a preference was not found for nuthatches. This study highlights that pure beech stands showed a reduced guild of arboreal nut foragers in comparison to oak stands. This different guild could probably affect the spatial patterns of seed dispersal, with a proportionally higher number of long dispersal events for acorns (mostly jay-dispersed) than for beechnuts (mostly nuthatch-dispersed). Long-distance dispersal of beechnuts (by jays) is determined by the presence of other preferred species (oaks) and their frequency of non-mast years. Seed location in different habitats strongly determines the contribution of different arboreal removers (including climbing rodents) and their removal speed, leading to a differential seed fate that will eventually affect tree regeneration. As nuthatches are sedentary birds, it is important to maintain old and dead trees where they can breed (crevices), forage (arthropods) and store seeds in order to favor beechnut dispersal and gene flow. By maintaining or favoring oak trees within beech stands we will ensure a wider guild of arboreal nut dispersers

    Lessons from MENA: appraising EU transfers of military and security equipment to the Middle East and North Africa: a contribution to the review of the EU common position

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    This publication analyses EU arms exports to the Middle East and North Africa (MENA), in recent years both from an overarching perspective as well as detailing specific transfers. While the particular timing and nature of the Arab Spring itself could not be predicted, the potential for trouble at some point and the responding State repression could hardly be a surprise given the nature of these authoritarian regimes. While civil society over the years has questioned a number of arms sales to undemocratic regimes with a history of violating human rights, the Arab Spring appeared to be a necessary condition for EU governments to recognise that the implementation of their export control policies had failed on numerous occasions. This analysis probes the level of caution EU exporting authorities demonstrated. The aim is to identify patterns of poor decision-making on arms exports where they exist, to consider why such patterns exist and to suggest remedies. Demands for socio-economic improvements as well as civil liberties, as they emerged in numerous Arab countries over the past year, are not likely to die soon, nor are these demands constrained to the Arab world

    Quantifying the Detrimental Impacts of Land-Use and Management Change on European Forest Bird Populations

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    The ecological impacts of changing forest management practices in Europe are poorly understood despite European forests being highly managed. Furthermore, the effects of potential drivers of forest biodiversity decline are rarely considered in concert, thus limiting effective conservation or sustainable forest management. We present a trait-based framework that we use to assess the detrimental impact of multiple land-use and management changes in forests on bird populations across Europe. Major changes to forest habitats occurring in recent decades, and their impact on resource availability for birds were identified. Risk associated with these changes for 52 species of forest birds, defined as the proportion of each species' key resources detrimentally affected through changes in abundance and/or availability, was quantified and compared to their pan-European population growth rates between 1980 and 2009. Relationships between risk and population growth were found to be significantly negative, indicating that resource loss in European forests is an important driver of decline for both resident and migrant birds. Our results demonstrate that coarse quantification of resource use and ecological change can be valuable in understanding causes of biodiversity decline, and thus in informing conservation strategy and policy. Such an approach has good potential to be extended for predictive use in assessing the impact of possible future changes to forest management and to develop more precise indicators of forest health

    Invasieve exoten in bossen

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    Begrazing is een mogelijke beheermaatregel bij de bestrijding van invasieve exoten. Een groot probleem daarbij is dat vaak de inheemse soorten preferentieel worden begraasd, en begrazing op zich zal dan ook zelden volstaan om een invasieve soort te bestrijden

    Beplanning vir die voetgangerbeweging van die visueel gestremde

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    The obstructions with which the visually impaired pedestrian can get on his routes can be categorized as obstacles and danger points. Hazards can be eliminated by simple and relatively inexpensive modifications. Obstacles can be overcome with the correct long-dress technique, but it has a major influence on the walking speed of the visually impaired. This statement is shown by means of a step-by-step experiment.*This article is written in Afrikaans

    Physiological stress and spatio-temporal fluctuations of food abundance and population density in Eurasian red squirrels

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    In continuously changing environments, variation of different ecological factors could affect the functioning of the hypothalamic-pituitary-adrenal (HPA) axis in wild mammals, increasing the secretion of glucocorticoids (GCs). In different animal species, GC concentrations are often used as a measure of the physiological stress response to environmental pressures, such as fluctuations in food abundance, population density, intra-and interspecific competition, and predation risk. However, previous studies reported contrasting results or did not find clear associations between physiological stress and environmental variables. Here, we used concentrations of faecal glucocorticoid metabolites (FGMs) as an integrated measure of physiological stress in wild Eurasian red squirrels (Sciurus vulgaris) from three study areas in the Italian Alps, to investigate whether variations in conifer-seed crop size and/or population density affected HPA axis activity. Squirrel density was estimated in each trapping session using the minimum number of animals alive, and annual counts of fresh cones from different conifer species were used to estimate annual food abundance (MJ/ha). We expected higher FGMs in response to increasing population density and/or decreasing food abundance, since these two variables could act as environmental stressors. Our results showed a lack of association between population density and FGMs and a significant effect of food abundance on FGMs. When conifer seed-crops were poor to moderate, FGMs increased with food abundance, while in the range of high seed-crops, FGMs remained first constant and then slightly decreased with a further increase in seed abundance. We also found differences in FGMs among seasons, as previously observed in this species. Our study adds further evidence that physiological stress can be influenced in different ways by environmental pressures and that long-term studies using individually marked animals are needed to disentangle the potential adaptive outcome of the physiological stress response in pulsed resource systems
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