Resultados de búsqueda - "ecology"

The control of heartwater on large-scale commercial and smallholder farms in Zimbabwe por Chamboko, Tafireyi, Mukhebi, A.W., Callaghan, C.J.O., Peter, T.F., Kruska, Russell L., Medley, G.F., Mahan, S.M., Perry, Brian D.

“…As part of a series of studies associated with the development of improved vaccines for heartwater (a tick-borne disease of ruminant livestock caused by Cowdria ruminantium), field surveys were carried out to assess losses associated with the disease and the costs associated with controlling it in the two main agro-ecological zones of Zimbabwe (lowveld and highveld) where heartwater is believed to be endemic and epidemic, respectively. …”
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Global food security: facts, issues, interventions and public policy implications por Hanjra, Munir A., Ferede, Tadele, Blackwell, John, Jackson, Tamara M., Abbas, Akhtar

“…The global food security situation and outlook remains delicately imbalanced amid surplus food production and the prevalence of hunger, due to the complex interplay of social, economic, and ecological factors that mediate food security outcomes at various human and institutional scales. …”
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Sustainability assessment of Thailand's electricity planning: Using section 1 of the 2009 hydropower sustainability assessment protocol por Foran, T., Resurrección, Bernadette P., Kansantisukmongkul, C., Wirutskulshai, U., Leeruttanawisut, K., Lazarus, Kate

“…We applied the HSAP from a public interest perspective: We assumed that aquatic ecosystems in the Mekong region are critically important for less privileged people, and that Thailand’s electricity planners can and should consider the distributional and ecological consequences of planning choices on a Mekong regional scale. …”
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Identifying determinants, pressures and trade-offs of crop residue use in mixed smallholder farms in Sub-Saharan Africa and South Asia por Valbuena, Diego, Homann-Kee Tui, Sabine, Erenstein, Olaf, Teufel, Nils, Duncan, Alan J., Abdoulaye, Tahirou, Swain, Braja B., Mekonnen, Kindu, Germaine, I., Gerard, Bruno G.

“…Determinants, pressures and trade-offs are shaped by the specific socio-economic and agro-ecological context of these mixed farms. The objective of this paper is to provide a comparative analysis of the determinants of CR use and to examine some options to cope with pressures and trade-offs in 12 study sites across Sub-Saharan Africa and South Asia. …”
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Potential nutrient supply, nutrient utilization efficiencies, fertilizer recovery rates and maize yield in northern Nigeria por Tabi, F.O., Diels, J., Ogunkunle, AO, Iwuafor, E.N.O., Vanlauwe, Bernard, Sanginga, Nteranya

“…Potential N (SN) and P (SP) supplies, N and P utilization efficiencies and fertilizer recovery rates for the northern Guinea Savanna (NGS) agro-ecological zone of Nigeria were derived from data collected on farmers fields, and used as input in the QUantitative Evaluation of the Fertility of Tropical Soils (QUEFTS) model. …”
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Double no-till and permanent raised beds in maize–wheat rotation of north-western Indo-Gangetic plains of India: Effects on crop yields, water productivity, profitability and soil... por Jat, Mangi Lal, Gathala, Mahesh Kumar, Saharawat, Yashpal S., Tetarwal, J.P., Gupta R, Singh, Yadvinder P.

“…The study reveals that NTB and NTF systems could be more viable options for MWS in order to save input costs and enhance profitability; however, the long-term effects of these alternative technologies need to be studied under varying agro-ecologies.…”
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Empirical evaluation of sustainability of divergent farms in the dryland farming systems of India por Haileslassie, Amare, Craufurd, Peter Q., Thiagarajah, R., Kumar, S., Whitbread, Anthony M., Rathor, A., Blümmel, Michael, Ericsson, P., Kakumanu, Krishna Reddy

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Impacts of seasonal climate communication strategies on farm management and livelihoods in Wote, Kenya por Rao, K.P.C., Hansen, James, Njiru E, Githungo WN, Oyoo A

“…It is therefore suggested that similar assessments with a much larger sample in different agro-ecologies, and more comprehensive baseline data collection, be planned to make a more conclusive assessment of farmers’ ability to understand, utilize and benefit from seasonal climate forecast information. …”
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Cost of doing a research: comparing participatory and conventional silviculture research in Nepal por Acharya, K, Goutam, K

“…The diverse needs of communities living in different climatic and ecological zones and under different socio-economic conditions have imposed a pattern of a multitude of localized forestry research studies in Nepal. …”
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Waking the Sleeping Giant: Agricultural intensification, extensification or stagnation in Mali's Guinea Savannah por Ollenburger, M.H., Descheemaeker, Katrien K., Crane, Todd A., Sanogo, O.M., Giller, Kenneth E.

“…Understanding household livelihood systems as part of a network of complex social and ecological factors allows the identification and exploration of multiple viable pathways towards desirable futures.…”
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Prevalence of aflatoxin in feeds and cow milk from five counties in Kenya por Senerwa, D.M., Sirma, A.J., Mtimet, Nadhem, Kang'ethe, Erastus K., Grace, Delia, Lindahl, Johanna F.

“…A cross-sectional study of aflatoxin contamination of milk and dairy feeds was carried out in five counties in Kenya representing different agro-ecological zones: Kwale, Isiolo, Tharaka-Nithi, Kisii and Bungoma. …”
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Rift Valley fever virus seroprevalence among ruminants and humans in northeast Kenya por Lindahl, Johanna F., Njeru, I., Karanja, J., Grace, Delia, Bett, Bernard K.

“…Between outbreaks, there are indications that the virus is still circulating in some ecologies. Kenya has suffered repeated serious outbreaks of RVF, with high morbidity in humans and animals, and also severe economic consequences. …”
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Using fuzzy logic models to reveal farmers motives to integrate livestock, fish, and crops. por Bosma, R.H.

“…We gathered data from 144 farms in six villages in two ecological zones of the Mekong Delta, Vietnam. Using the livelihood framework we conceptualised farmers’ decision-making in a fuzzy logic model that can deal with subjective linguistic statements through ‘if–then’ rules. …”
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Efficacy of Integrated Straw Formulations on Lowland Rice Field Organic Carbon and Greenhouse Gas Emissions Using CCAFS-MOT Model in Niger State, Nigeria por Koglo, Yawovi Sena, Abdulkadir, Abubakar, Feliciano, Diana, Okhimamhe, Appollonia A.

“…However, additional trials are needed before validation of the method under different agro ecological conditions in west African zones.…”
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Cultivating the landscape: Enhancing the context for plant improvement por Mazhar, Farhad, Buckles, Daniel

“…Yet bethua and other uncultivated plants are still an important source of food for the poorest of the poor in the ecologically degraded rural areas of Bengal, once the high points of agro biodiversity and local knowledge systems. …”
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Composición florística, estructura y biomasa de los bosques de pino-encino en la reserva Santa Rosa, Tisey, Estelí, Nicaragua por Siles, Pablo, Talavera A., Patricia, Andino Rugama, Flavia, Alaniz, Lester, Ortíz González, William

“…In Nicaragua, several protected areas were established for the preservation of this ecosystem, such as the natural reserve Tisey-Estanzuela; however, this forest is considered susceptible to degradation, due to increasing deforestation and agricultural activities, besides being a narrow ecological niche (700 to 1 500 masl). We studied the floristic composition, forest structure and biomass along an altitude gradient dominated by Pinus-Quercus in forest stands on the highlands of Esteli, Northern Nicaragua. …”
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Development of molecular genomic tools for verification of intergeneric hybrids between castor bean (Ricinus communis L.) and cassava (Manihot esculenta Crantz) por Gedil, Melaku A, Kolade, F., Raji, A., Ingelbrecht, I.L., Dixon, A.

“…Despite its relatively recent introduction to Africa, cassava (Manihot esculenta Crantz) has become a major food crop adapted to a wide range of agro-ecologies that is grown by millions of small-holding farmers of sub-Saharan Africa (SSA), owing to its remarkable tolerance to an array of biotic and abiotic stresses. …”
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Global agenda for livestock research por Fitzhugh, H.A.

“…Specific priorities in the global agenda vary with livestock species (ruminant, non-ruminant), production systems (grazing, mixed, industrial), agro-ecological and socio-economic factors (especially, those differing for developed and developing regions) and whether research will be supported by public or private sector funding. …”
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Exploration of underutilized crop diversity of Capsicum peppers in their primary center of diversity in Bolivia and Peru por Van Zonneveld, Maarten J., Ramírez, Marleni, Williams, David E., Petz, Michael, Meckelmann, Sven W., Avila, Teresa, Bejarano Martinez, Carlos, Ríos Lobo, Llermé, Libreros, Dimary, Scheldeman, Xavier

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Local dynamics of worker activity of the invasive Vespula germanica and V. vulgaris (Hymenoptera: Vespidae) wasps in Argentina por Masciocchi, Maite, Pereira, Ana Julia, Corley, Juan Carlos

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