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| Registros recuperados: 29 | |
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| Lynam, Timothy; Tropical Resource Ecology Program, University of Zimbabwe; tlynam@science.uz.ac.zw. |
| Zambezi Valley agro-ecosystems are environmentally, economically, and institutionally variable. This variability means that it is not possible to measure everything necessary to develop a predictive understanding of them. In particular, because people and their environments are constantly changing, what was measured yesterday may change by tomorrow. Here, I describe elements of the approach that I have developed to address this problem. Called DAAWN, for Detail as and When Needed, the approach advocates an iterative and multiscaled methodology in which we first capture as broad an understanding of the system as possible and then use awareness developed at this scale to identify where to focus subsequent, more detailed, investigations. Because we cannot... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Comples adaptive systems; Household and resource economics; Livelihood strategies; Modeling; Multi-agent simulation models; Natural resource use; Participatory systems analysis; Southern Africa; Spidergrams. |
| Ano: 1999 |
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| Mead, A.R.. |
| The history and current taxonomic status of 62 nominal taxa are revised that have been associated in the literature with the subgenus Tholachatina Bequaert, 1950, of genus Archachatina Albers, 1850, and the genus Cochlitoma Férussac, 1821, in the land snail family Achatinidae Swainson, 1840. Tangible, reliable characters have been found in the detailed features of the reproductive anatomy in this family. The results of comparative anatomical study convincingly reflect phylogeny in contrast to the comparative study of only the shell characters. This latter more strongly reflects the effects of the intrinsically variable environment over time. In the present study, both sets of characters are needed to refine identification. Change, and therefore... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Mollusca; Gastropoda; Pulmonata; Achatinidae; Biogeography; Taxonomy; Genital anatomy; Southern Africa; East Africa; 42.73. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/214451 |
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| Harrington, Larry; International Maize and Wheat Improvement Center (CIMMYT); l.harrington@cgiar.org; White, Jeffrey; ; j.white@cgiar.org; Grace, Peter; Sinclair Knight Merz, Brisbane, Australia; pgrace@skm.com.au; Hodson, David; ; d.hodson@cgiar.org; Hartkamp, Agnes Dewi; Product Organisation Grains, Seeds and Pulses, The Hague, Netherlands; d.hartkamp@wisint.org; Vaughan, Christopher; CO MET Directorate of Environmental Affairs, Namibia; kit@africaonline.com.na; Meisner, Craig; ; cmeisner@bttb.net.bd. |
| To help integrated natural resource management (INRM) research "deliver the goods" for many of the world's poor over a large area and in a timely manner, the authors suggest a problem-solving approach that facilitates the scaling out of relevant agricultural practices. They propose seven ways to foster scaling out: (1) develop more attractive practices and technologies through participatory research (2) balance supply-driven approaches with resource user demands, (3) use feedback to redefine the research agenda, (4) encourage support groups and networks for information sharing, (5) facilitate negotiation among stakeholders, (6) inform policy change and institutional development, and (7) make sensible use of information management tools, including models... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Mexico; South Asia; Southern Africa; Conservation tillage; Diffusion of research; Environments; Geographic information systems; Natural resource management; Participatory research; Scaling out; Simulation models; Technology transfer. |
| Ano: 2001 |
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| Tschirley, David L.; Jayne, Thomas S.. |
| Concern about humanitarian crises in southern Africa, especially in light of the surge in world food prices since 2007, has been accompanied by calls for direct government action in food markets. This paper reviews how Zambia, Malawi, and Mozambique handled private food markets during the food crises of 2001/02, 2002/03, and 2005/06, which may provide important lessons for the management of future crises. Lack of trust between government and traders can lead to behavior that undermines the interests of each and harms consumers and farmers; Malawi and Zambia have persistently fallen into this trap while Mozambique has partially avoided it. Empirical policy analysis can make an important contribution to resolution only within a consultative process involving... |
| Tipo: Report |
Palavras-chave: Southern Africa; Malawi; Mozambique; Zambia; Markets; Emergency response; Trust; Food Security and Poverty; Q18. |
| Ano: 2008 |
URL: http://purl.umn.edu/54559 |
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| Lyons, Richard; Tooth, Stephen; Duller, Geoff A. T.. |
| The nature, spatial patterns and forcing mechanisms of Quaternary climatic changes across southern Africa remain unresolved and contentious, principally due to the scarcity of continuous and robustly-dated proxy records. We present what we interpret to be a broadly continuous record of late Quaternary climatic change based on optically stimulated luminescence (OSL) dating, and mineral magnetic and diffuse reflectance spectroscopy (DRS) analyses of stacked palaeosols within an overbank alluvial succession along the Modder River, central South Africa. The OSL ages indicate that alluvial sedimentation occurred at a fairly steady rate, averaging similar to 0.15 mm/yr from at least 44 ka until similar to 0.83 ka. This suggests that the palaeosols are... |
| Tipo: Text |
Palavras-chave: Erfkroon; Southern Africa; Palaeosol; OSL; Quaternary; Mineral magnetism. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00290/40120/39120.pdf |
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| Nhemachena, Charles; Hassan, Rashid M.. |
| Adaptation to climate change involves changes in agricultural management practices in response to changes in climate conditions. It often involves a combination of various individual responses at the farm-level and assumes that farmers have access to alternative practices and technologies available in the region. This study examines farmer adaptation strategies to climate change in Southern Africa based on a cross-section database of three countries (South Africa, Zambia and Zimbabwe) collected as part of the Global Environment Facility/World Bank (GEF/WB) Climate Change and African Agriculture Project. The study describes farmer perceptions to changes in long-term temperature and precipitation as well as various farm-level adaptation measures and barriers... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Climate change; Adaptation; Southern Africa; Environmental Economics and Policy; Farm Management. |
| Ano: 2007 |
URL: http://purl.umn.edu/42399 |
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| Abreu, J.A.; Martins, E.S.; Catarino, L.. |
| Genus Maerua has around 60 species represented on the African continent, of which three have been reported for Angola. Two new species of Maerua (Capparaceae) from Angola are here described. Both are closely similar to M. juncea subsp. juncea, being distinguished by floral traits such as the receptacle, androphore and gynophore (M. pintobastoae) or leaf traits such as venation, as well as size and shape of the ovary and disc shape (M. mendesii). A key for Maerua species occurring in Angola is provided, as well as a table summarizing and comparing the morphological characters for the new species and similar African species. With the description of these two new species, the genus Maerua comprises five species in Angola. Resumo O género Maerua tem cerca de... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Angola; Capparaceae; Endemism; Maerua; Southern Africa; Taxonomy. |
| Ano: 2014 |
URL: http://www.repository.naturalis.nl/record/526215 |
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| De Vos, Alta; Percy FitzPatrick Institute, Department of Biological Sciences, University of Cape Town, South Africa; Rhodes University, South Africa; a.devos@ru.ac.za; Cumming, Graeme S.; Percy FitzPatrick Institute, Department of Biological Sciences, University of Cape Town, South Africa; ARC Centre of Excellence in Coral Reef Studies, Townsville, Queensland, Australia; graeme.cumming@jcu.edu.au; Cumming, David H. M.; Percy FitzPatrick Institute, Department of Biological Sciences, University of Cape Town, South Africa; Tropical Resource Ecology Programme, University of Zimbabwe, Harare, Zimbabwe; cumming@icon.co.zw; Ament, Judith M.; Percy FitzPatrick Institute, Department of Biological Sciences, University of Cape Town, South Africa; judith.ament@uct.ac.za; Baum, Julia; Percy FitzPatrick Institute, Department of Biological Sciences, University of Cape Town, South Africa; jubaum5@gmail.com; Clements, Hayley S; Percy FitzPatrick Institute, Department of Biological Sciences, University of Cape Town, South Africa; clementshayley@gmail.com; Grewar, John D; Western Cape Government, Department of Agriculture, Elsenburg, South Africa; JohnG@elsenburg.com; Maciejewski, Kristine; Percy FitzPatrick Institute, Department of Biological Sciences, University of Cape Town, South Africa; Krismacski@gmail.com; Moore, Christine; Percy FitzPatrick Institute, Department of Biological Sciences, University of Cape Town, South Africa; School of Geography and the Environment, University of Oxford, UK; christine.moore@ouce.ox.ac.uk. |
| It is extremely important for biodiversity conservation that protected areas are resilient to a range of potential future perturbations. One of the least studied influences on protected area resilience is that of disease. We argue that wildlife disease (1) is a social-ecological problem that must be approached from an interdisciplinary perspective; (2) has the potential to lead to changes in the identity of protected areas, possibly transforming them; and (3) interacts with conservation both directly (via impacts on wild animals, livestock, and people) and indirectly (via the public, conservation management, and veterinary responses). We use southern African protected areas as a case study to test a framework for exploring the connections between... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Disease; Identity; Pathogens; Protected areas; Resilience; Social-ecological systems; Southern Africa. |
| Ano: 2016 |
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| Benson, Todd; Machinijili, Charles; Kachikopa, Lawrence. |
| This paper presents the poverty analysis of the 1997-98 Malawi Integrated Household Survey. The analysis developed basic needs poverty lines, using consumption-based measures of welfare to classify households and individuals as poor and nonpoor. Because consumption data were not of uniform quality across sample households, the analysis made adjustments to derive a more accurate assessment of the incidence of poverty across the country. The analysis provides poverty and inequality estimates for Malawi's population. About 65 percent were unable to meet their basic needs, and poverty was deep and pervasive. The distribution of household welfare was closely examined within the context of the Malawi Poverty Reduction Strategy to guide government action in... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Southern Africa; Africa South of Sahara; Poverty; Poverty Analysis; Food Security and Poverty. |
| Ano: 2004 |
URL: http://purl.umn.edu/60940 |
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| Registros recuperados: 29 | |
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