Resultados de búsqueda - Repsol~

Agricultural land expansion and deforestation in Malawi por Mindle, I.J., Kowero, G.S., Ngugi, D., Luhanga, J.

“…These four activities constitute 84% of the reasons given by farmers for the increasing environmental degradation. …”
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Biodiversity research in Malinau por Sheil, Douglas

“…Additional research activities include assessments of fish, of reptiles and amphibians. Baseline data for mammals, birds and some invertebrates are also reported from the main logging studies. …”
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Getting forestry research into policy and practice por Spilsbury, M.J.

“…It asserts that there has been difficulty in realising research-induced efficiency gains in the developing tropics and suggest some of the underlying reasons for this. The paper articulates the difference between the influence and impact of research, and makes suggestions as to how research uptake processes can be better understood through the use of concepts such as ‘impact pathways’ and diffusion of innovations. …”
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Participatory planting and management of indigenous trees: lessons from Chivi district, Zimbabwe por Gerhardt, K., Nemarundwe, N.

“…For Brachystegia glaucescens, the germination rate was only 30%, and the survival rate was 31%. The main reasons for planting were to provide shade, to serve as a windbreak, and to conserve and gain individual control over dwindling natural resources, particularly Afzelia quanzensis. …”
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Droits fonciers coutumiers et autonomie regionale a Kalimantan a Kalimantan-Est (Indonesie): entre enjeux de pouvoir et contrôle de l’accès aux ressources. por Levang, P., Buyse, N.

“…Under the Dutch colonial rule as well as under the auspices of the young independent republic, the rights of forest peoples over their resources were always denied. …”
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Shaping forest safety nets with markets: adaptation to climate change under changing roles of tropical forests in Congo Basin por Nkem, J., Kalame, F.B., Idinoba, M., Somorin, O.A., Ndoye, O., Awono, A.

“…Following the identification and prioritization of forest-based development sectors for adaptation by stakeholders, the types of markets and trades surrounding the identified sectors were examined in two provinces in the Democratic Republic of Congo as a case study in order to evaluate revenue flows and their potential contribution to adaptation by local communities. …”
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Workshop report: Farm-household modelling with a focus on food security, climate change adaptation, risk management and mitigation: a way forward por Wijk, Mark T. van, Rufino, Mariana C., Thornton, Philip K.

“…It is possible to analyse household-level questions related to climate change in a reasonable short (6 months to 1 year) time span with existing tools and the expertise present in the group of participants. 2. …”
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Pathogenicity of Theileria parva is influenced by the host cell type infected by the parasite por Morrison, W. Ivan, MacHugh, Niall D., Lalor, P.A.

“…The initial approach, which involved inoculation of cattle with autologous cloned cell lines of different phenotypes, failed to resolve the issue, because the prolonged period of culture required to clone and characterize the cell lines resulted in attenuation of the cells. …”
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A close look at a rare African breed - the Kuri cattle of Lake Chad Basin: Origin, distribution, production and adaptive characteristics por Tawah, C.L., Rege, J.E.O., Aboagye, G.S.

“…The limited data on its population and distribution suggest that the Kuri can only survive in the environs of the lake and is rapidly declining in numbers. Possible reasons for the declining trend include drought, protracted civil conflicts in the region, the retreating waters of the Lake and extensive crossbreeding with the Zebus when they graze on the shores. …”
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Response to Hertz-Fowler and Berriman: Continuing tsetse and trypanosoma genome sequencing projects por Davila, A.M.R., Majiwa, Phelix A.O., Grisard, E.C., Aksoy, S., Hide, W.

“…Therefore, there is an urgent need to undertake bioinformatics capacity-building in developing countries for several reasons, such as: (i) costs for bioinformatics research are lower; (ii) annotations would be performed in close collaboration with the sequencing centers in developed countries; (iii) the biology of the organism (pathogens and pests) is evident in DECs; hence, relevant genes can be evaluated as soon as they are identified, thus speeding up the evaluation and validation phase of candidate genes; (iv) validation of reagents or biotechnological products can often be performed in DECs on definitive host(s) affected by the pathogen, without undue restrictions inherent in conducting such validations where the disease is not endemic (e.g. developed countries); (v) a sense of joint ownership can be developed over the information derived from the sequence; and (vi) re-annotation is usually necessary and can be also be performed in developing countries. …”
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Investment in soil conservation in northern Ethiopia: The role of land tenure security and public programs por Gebremedhin, Berhanu, Swinton, S.M.

“…A double hurdle statistical analysis of 250 farms in the Tigray region of Ethiopia reveals different causal factors for soil conservation adoption versus intensity of use. Farmers' reasons for adopting soil conservation measures vary sharply between stone terraces and soil bunds. …”
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Analysis of gaps and possible interventions for improving water productivity in crop livestock systems of Ethiopia por Descheemaeker, Katrien K., Amede, Tilahun, Haileslassie, Amare, Bossio, Deborah A.

“…Low crop and livestock productivities in the mixed farming systems of Ethiopia hamper efforts to meet the increasing food demands from a stressed natural resource base. Important reasons for the low agricultural productivity are water scarcity and poor spatial and temporal rainfall distribution. …”
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Zoonotic emerging infectious disease in selected countries in Southeast Asia: Insights from ecohealth por Grace, Delia, Gilbert, Jeffrey, Lapar, Ma. Lucila, Unger, Fred, Fèvre, Eric M., Hung Nguyen-Viet, Schelling, E.

“…A comprehensive interview guide was developed and in-depth interviews completed with 21 key stakeholders in Vietnam, Lao People’s Democratic Republic, and Cambodia. We found numerous relevant actors with a predominance of public sector and medical disciplines. …”
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Population-based evaluation of the Ehrlichia ruminantium MAP 1B indirect ELISA por Peter, T.F., O'Callaghan, C.J., Medley, G.F., Perry, Brian D., Semu, S.M., Mahan, S.M.

“…Hence, the indirect MAP 1B ELISA may be an unreliable indicator of past exposure to heartwater in field-infected cattle in Zimbabwe. Although the reasons for this low response in field cattle are not fully understood, this study illustrates the need for field validation of the performance of new diagnostic tests prior to their use for epidemiological purposes.…”
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Urine effects on soil chemical properties and the impact of urine and dung on pearl millet yield por Powell, J.M., Ikpe, F.N., Somda, Z.C., Fernández Rivera, S.

“…An average voiding of sheep urine applied to a sandy, siliceous soil in the Republic of Niger increased soil pH, available phosphorus and ammonium levels dramatically in the upper 10-15 cm of soil, especially during the first week following application. …”
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Adaptation of the CROPGRO growth model to velvet bean (Mucuna pruriens). II. Cultivar evaluation and model testing por Hartkamp, A.D., Hoogenboom, Gerrit, Gilbert, R.A., Benson, T., Tarawali, Shirley A., Gijsman, A.J., Bowen, W., White, Jeffrey W.

“…The linear response to photoperiod did, however, provide reasonable values for partitioning to vegetative, reproductive and senesced materials. …”
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Promoting improved rainwater and land management in the Blue Nile (Abay) basin of Ethiopia por Merrey, Douglas J., Gebreselassie, T.

“…In short, the report contains the findings and recommendations of the study, including, as stated in the terms of reference: Summaries of the findings of past and on-going studies on RWM strategies, including impacts on water productivity, success as well as failure in improving agricultural production and livelihoods— and the reasons for these, negative as well as positive social and environmental impacts (e.g. upstream–downstream consequences, increasing transmission of vector borne disease), analysis of factors influencing RWM adoption or disadoption behaviour, including an analysis of policy or institutional factors at different levels (local, regional, federal) that may directly or indirectly influence the use of improved RWM strategies. …”
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Standardised tests in mice and cattle for the detection of drug resistance in tsetse-transmitted trypanosomes of African domestic cattle por Eisler, M.C., Brandt, J., Bauer, B., Clausen, Peter-Henning, Delespaux, V., Holmes, P.H., Ilemobade, A., Machila, N., Mbwambo, H., McDermott, John J., Mehlitz, D., Murilla, G., Ndung'u, J.M., Peregrine, A.S., Sidibe, I., Sinyangwe, L., Geerts, S.

“…Multiple-dose tests may be used to determine the degree of resistance of individual stabilates to be determined precisely in mice are also described, but for logistical reasons these will rarely be conducted on more than a few stabilates, and testing of a larger number of stabilates in the single-dose test will generally provide more useful information. …”
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Unlocking value out of India's rainfed farming areas. por Sharma, Bharat R.

“…Low and uncertain crop yields and concentrated poverty in the vast rainfed regions, diminishing returns from the public irrigation systems, climate change induced chaotic fluctuations in the hydrologic regimes and a large demand-supply gap in non-cereal food items are all compelling reasons for the need to realise the production potential of rainfed farming areas. …”
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Blue Nile flow, sediment and impact of watershed interventions: case of Gumera Watershed por Awulachew, Seleshi Bekele, Tenaw, M., Steenhuis, Tammo S., Easton, Z.M., Ahmed, A., Bashar, K.E.

“…The result shows that runoff can be reasonably simulated with calibration of R2=0.87 and validation of result of 0.82, and comparable sediment modelling results. …”
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