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151.
Despite widespread recognition of the major threat to tropical forest biological diversity and local food security posed by unsustainable bushmeat hunting, virtually no long‐term studies tracking the socioecological dynamics of hunting systems have been conducted. We interviewed local hunters and collected detailed hunting data to investigate changes in offtake and hunter characteristics over 10 years (2001–2010) in Dibouka and Kouagna villages, central Gabon, in the context of hunter recollections of longer term trends since the 1950s. To control for changes in hunter behavior, such as trap location and characteristics, we report hunting offtake data per trap. Our results suggest the hunting area was already highly depleted by 2001; local hunters reported that 16 large‐bodied prey species had become rare or locally extirpated over the last 60 years. Overall, we observed no significant declines in hunting offtake or changes in species composition from 2001 to 2010, and offtakes per trap increased slightly between 2004 and 2010. However, trapping distance from the villages increased, and there was a switch in hunting techniques; a larger proportion of the catch was hunted with guns in 2010. The number of hunters declined by 20% from 2004 to 2010, and male livelihood activities shifted away from hunting. Hunters with the lowest hunting incomes in 2004 were more likely than successful hunters to have moved away from the village by 2010 (often in response to alternative employment opportunities). Therefore, changes in trap success (potentially related to biological factors) were interacting with system‐level changes in hunter number and composition (related to external socioeconomic factors) to produce a relatively static overall offtake. Our results highlight the importance of understanding the small‐scale context of hunting to correctly interpret changes or apparent stasis in hunting effort and offtake over time. Cambio Social y Ecológico a lo Largo de Una Década en un Sistema de Cacería Aldeana, Gabón Central  相似文献   
152.
Foreign direct investment (FDI) flowing into Africa is highly diverse in terms of the origin of the investors, size of the firms, and the sectors of activity. The motivations and factors driving firms' decisions to invest in Africa are equally diverse. A direct survey of senior management in South African firms that are operating in sub-Saharan Africa reveals that the drivers of foreign investment as well as the risks and the strategies to overcome them differ markedly between sectors. A further finding is that there is a limited pool of FDI promotion policies and incentives that governments can institute that are effective in impacting South African corporations' investment decisions. As a consequence, broad-based FDI promotion policies aimed at attracting FDI across all investor groups are likely to have limited impact in attracting FDI from any particular investor group, or in attracting any FDI from multinational companies similar to the South African companies studied here. Such broad based policies probably need to be complemented with policies targeting those specific firms or sectors which countries hope to attract.  相似文献   
153.
David Gibbon 《Disasters》1987,11(1):53-58
It is the principal proposition of this paper that formal agricultural research, and its supporting policies and planning, has not responded adequately to the special situation that exists in semi-arid Africa. In many cases the transfer of research approaches based on temperate and more humid tropical experience has contributed to greater instability and the growing environmental crisis. Radically different research structures, objectives, methods and expectations are necessary to contribute to the redevelopment of long term regenerative systems of production that will provide the short and long term needs of the people who live in the semi-arid regions and at the same time protect these environments.  相似文献   
154.
The potential for mitigating climate change is growing worldwide, with an increasing emphasis on reducing CO2 emissions and minimising the impact on the environment. African continent is faced with the unique challenge of climate change whilst coping with extreme poverty, explosive population growth and economic difficulties. CO2 emission patterns in Africa are analysed in this study to understand primary CO2 sources and underlying driving forces further. Data are examined using gravity model, logarithmic mean divisia index and Tapio's decoupling indicator of CO2 emissions from economic development in 20 selected African countries during 1984?2014. Results reveal that CO2 emissions increased by 2.11% (453.73 million ton) over the research period. Gravity centre for African CO2 emissions had shifted towards the northeast direction. Population and economic growth were primary driving forces of CO2 emissions. Industrial structure and emission efficiency effects partially offset the growth of CO2 emissions. The economic growth effect was an offset factor in central African countries and Zimbabwe due to political instability and economic mismanagement. Industrial structure and emission efficiency were insufficient to decouple economic development from CO2 emissions and relieve the pressure of population explosion on CO2 emissions in Africa. Thus, future efforts in reducing CO2 emissions should focus on scale-up energy-efficient technologies, renewable energy update, emission pricing and long-term green development towards sustainable development goals by 2030.  相似文献   
155.
Abstract

This article examines results from in-depth interviews conducted with parents of children with asthma living in an urban environment. We examine themes from the in-depth interviews related to participants' perceptions of the influence of their physical environment on their mental and physical health, and the actions that they take in an effort to protect their health within this context. The findings from this study suggest several implications for understanding the interface between the physical environment of urban communities and residents' health, as well as for the policy and practice of risk assessment strategies.  相似文献   
156.
This article examines the potential contribution of household scale off-grid renewable energy generation to the post-carbon economy. The large-scale focus of the green jobs agenda in high-income countries obscures how small-scale technologies can be a transformative source of employment in developing economies. Debates about what constitutes a green job and their value leaves out the everyday practice of green livelihoods carried out by the urban poor across the African continent in unfavourable institutional contexts where nonrenewable fuel is subsidised and renewable energy inputs are heavily taxed. The article presents experiences from field work in several countries, including Egypt, Nigeria and Kenya to provide practical examples of communities pursuing strategies of income generation, community empowerment and environmental preservation. We argue that scholars and practitioners concerned with both social justice and environmental preservation should embrace a definition of green jobs that is bottom-up or people-centred. The grassroots experiences highlighted illustrate the important role of non-governmental organisations in supporting transformative, locally sustainable green employment and livelihoods by piloting demonstration projects, fostering innovation, conducting research, forming coalitions and engaging in advocacy when local institutions and market conditions make both consumers and providers risk averse to off-grid renewable energy adoption.  相似文献   
157.
John Magrath 《Local Environment》2013,18(9-10):891-901
Farmers and pastoralists in Africa are remarkably consistent across countries in how they report climate is changing. These changes are still relatively small but, combined with the effects of chronic poverty, disease and environmental degradation, are already having severe human consequences. The changes are consistent with what is expected to occur due to man-made global warming and will increase. Women are especially impacted. Africa is least responsible for greenhouse gas emissions, but will suffer some of the most damaging consequences. Adaptation is essential. This will require finance from international sources. However, there is much African governments can and should do to start. Boosting adaptation to current climatic variability and shocks and tackling poverty will bring benefits today and for the future.  相似文献   
158.
Framework for Measuring Sustainable Development in Catchment Systems   总被引:15,自引:0,他引:15  
Integrated catchment management represents an approach to managing the resources of a catchment by integrating environmental, economic, and social issues. It is aimed at deriving sustainable benefits for future generations, while protecting natural resources, particularly water, and minimizing possible adverse social, economic, and environmental consequences. Indicators of sustainable development, which summarize information for use in decision-making, are invaluable when trying to assess the diverse, interacting components of catchment processes and resource management actions. The Driving-Forces–Pressure–State–Impact–Response (DPSIR) indicator framework is useful for identifying and developing indicators of sustainable development for catchment management. Driving forces have been identified as the natural conditions occurring in a catchment and the level of development and economic activity. Pressures include the natural and anthropogenic supply of water, water demand, and water pollution. State indicators can be split into those of quantity and those of quality. Impacts include those that affect the ecosystems directly and those that impact the use value of the resource. It core indicators are identified within each of the categories given in the framework, most major catchment-based management issues can be evaluated. This framework is applied to identify key issues in catchment management in South Africa, and develop a set of indicators for evaluating catchments throughout the country.  相似文献   
159.
Internationally and in South Africa, mining companies are increasingly referring to corporate social responsibility (CSR) and partnerships in terms of the business case, or the expectation that being responsible and collaborating with stakeholders is good for profits. Based on a case study of platinum and chrome mining in South Africa, this article argues that the business case is circumscribed by companies’ institutional context. In the past, mining companies’ dominant interpretation of CSR has been in terms of charitable donations and support to good causes. These efforts have not alleviated the contribution of mining companies to growing social problems around the mines, primarily because they have not impacted on core business practices and have not contributed to necessary cross‐sectoral collaboration. Recently, however, there has been an important transition involving the broadening of the interpretation of CSR and increasing commitment to these issues amongst corporate leadership. Though market‐based incentives have contributed to this, the key driver has been the State's legislated transformation programme premised on State sovereignty over mineral resources. Hence, while the interrelationship between companies and their institutional context has, in the past, brought about a vicious cycle of irresponsibility and minimal collaboration, this cycle may be reversed into a virtuous one, driven in particular by the State. The broader implication is that references to a business case for CSR and partnerships cannot be relied upon independently of continued efforts at shaping the public sector context of companies.  相似文献   
160.
Water is the major food component for the maintenance of animals. Although Africa is endowed with diverse agricultural environments, the survival of animals in Sahelian and sub-Sahelian Africa is threatened by the lack of water. Animals need water as an essential nutrient, a component of the body, and for conductive or evaporative cooling. Water needs are met mainly through drinking free water and to a lesser extent by utilising water that forms part of the feed. However during the long dry season, surface water resources dwindle and the water content of available forage decreases, thereby increasing the animals’ demand for water. Consequently animals have to walk for long distances to obtain adequate forage and water, which in turn raises the demand for these resources. Water can be used to direct and regulate rangeland management in this open access environment, to maintain range resources and to improve their quality. Water development, which takes into consideration usable forage, despite some intra- or inter-annual variability, plays an important role and its spatial distribution will affect the grazing intensity of forage resources. Sound water development and management strategies integrating local communities in the decision-making will set up a firm basis for sustained range management in the free and open access environment of sub-Saharan Africa where lack of financial input, social and cultural habits and above all the environmental condition do not permit large scale fencing as in other parts of the world.  相似文献   
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