Resultados de búsqueda - "complexity"

Climate change effects on walnut pests in California por Luedeling, Eike, Steinmann KP, Zhang M, Brown, P.H., Gran J, Girvetz, Evan Hartunian

“…More information on the impact of climate change on complex agroecological food webs and on the response of pests to high temperatures is needed for improving the reliability of projections.…”
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Scenario planning for community development in Vietnam: a new tool for integrated health approaches? por Nguyen, V., Hung Nguyen-Viet, Phuc Pham Duc, Weise, M.

“…Objective: As an entry point, we developed scenario planning as an action–research tool in a peri-urban community to identify first steps towards improving their complex sanitation problem and to, systemically, address emerging/re-emerging infectious diseases, as these are commonly linked to unsafe water and inadequate sanitation conditions. …”
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Food security in a perfect storm: using the ecosystem services framework to increase understanding por Poppy, GM, Chiotha, S, Eigenbrod, F., Harvey, Celia A., Honzak, M, Hudson, MD, Jarvis, Andy, Madise, NJ, Schreckenberg, Kate, Shackleton, Charlie M., Villa, F., Dawson, T.P.

“…Climate change and an expanding global population act in concert to make global food security even more complex and demanding. As achieving food security and the millennium development goal (MDG) to eradicate hunger influences the attainment of other MDGs, it is imperative that we offer solutions which are complementary and do not oppose one another. …”
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Association between seed coat polyphenolics (tannins) and disease resistance in common bean por Islam, F.M.A., Rengifo, J, Redden, R.J., Basford, KE, Beebe, Stephen E.

“…The relationships between coat extract and disease reactions are complex. A better understanding will help breeders to select germplasm with improved nutritional quality without adversely affecting disease resistance.…”
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History, current status and collaborative research projects for Bemisia tabaci por Oliveira, M.R.V., Henneberry, TJ, Anderson, Pamela K.

“…Biotypes have been identified in different areas of the world suggesting that B. tabaci may be a species-complex undergoing evolutionary change. These biotypes may exhibit differences in viruses transmitted and transmission efficiency, rates of development, endosymbionts, host utilization, and physiological host damage. …”
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Sustainable intensification?: Implications for the emergence of diseases por Grace, Delia, Bett, Bernard K., Unger, Fred, Hung Nguyen-Viet

“…A systematic literature review was conducted to synthesize best available scientific knowledge about zoonotic disease transmission through direct or indirect domestic livestock-wildlife interaction, with emphasis on risk factors, drivers and trajectories of transmission, and promising interventions for controlling important zoonoses based on managing livestock-wildlife interaction.The study found complex associations with agricultural intensification and disease emergence: • Biodiversity, bush meat consumption, expanding ecotones, increases in synanthropoic species, land use change and livestock intensification are commonly cited and inter-related causes of emerging infectious diseases…”
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Defining livestock breeds in the context of community-based management of farm animal genetic resources por Rege, J.E.O.

“…These may range from such complex traits as adaptation to local environmental stresses, to functions such as traction or products such as milk or wool and simple traits such as presence and size of horns or humps. …”
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Implications of changing domestic policies and globalisation for crop-livestock systems Development in West africa por Williams, Timothy O., Ehui, Simeon K., Kormawa, P.M.

“…Opportunities exist to find new markets for new products at higher prices and thus increase both employment and incomes, but access to the lucrative markets in the developed countries is cumbersome and complex. The evidence on the policy reforms that have been undertaken in several West African countries is reviewed and their impacts on crop-livestock outputs, prices, food security and incomes summarised. …”
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Testicular growth and its relationship with linear body measurements in Borana-Friesian crossbred bull calves at different ages por Gojam, Y., Tegegne, Azage, Gebre-Wold, A., Alemayehu, M., Yilma, Z.

“…Even if the determination of sexual maturity in male needs detail examination and is complex, at field level the steady change in testis and body size may indicate the inclination of the animal to physiological maturity. …”
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Phosphorus fractions under different land-use systems in oxisols of the Brazilian cerrados por Westerhof, R, Silva, J.E. da, Ayarza, Miguel Angel, Zech, W.

“…Possibly, the adsorption of P to oxyhydroxides was reduced at the more acid reforested sites by complexation of Fe and Al oxides with organic acids. …”
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A framework for environmental ex-ante impact assessment of livestock value chains por Notenbaert, An Maria Omer, Lannerstad, Mats, Herrero, Mario, Fraval, Simon, Ran, Ylva, Paul, Birthe K., Mugatha, Simon M., Barron, Jennie, Morris, J.

“…They are organised in complex market chains that employ at least 1.3 billion people globally and directly support the livelihoods of 600 million poor smallholder farmers in the developing world. …”
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The SmartAG Partner: CCAFS East Africa Quarterly Newsletter, October - December 2014 por CGIAR Research Program on Climate Change, Agriculture and Food Security

“…We also present how a project on soil analysis in Lushoto, Tanzania is helping scientists map out the true soil complexities within the landscape putting them in a good position to give advice on appropriate farming practices. …”
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Spatiotemporal patterns in the mean and extreme temperature indices of India, 1971–2005 por Panda, D.K., Mishra, Atmaram, Kumar, A., Mandal, K.G., Thakur, A.K., Srivastava, R.C.

“…The frequency and intensity of warm extremes, especially representing the daily minimum temperature, have increased with simultaneous decreases in cold extremes in large parts of the country, but the spatial distribution of the trend magnitude reflects the complex natural climatic settings of India and its possible interaction with the anthropogenic forcing. …”
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Analysis of risk factors for T. brucei rhodesiense sleeping sickness within villages in south-east Uganda por Zoller, T., Fèvre, Eric M., Welburn, S.C., Odiit, M., Coleman, P.G.

“…The novel method of analysing complex spatial interactions used in the study can be applied to a range of other diseases.Spatial risk factors for HAT are maintained across geographical scales; this consistency is useful in the design of decision support tools for intervention and prevention of the disease. …”
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Spatial evapotranspiration, rainfall and land use data in water accounting - part 2: reliability of water accounting results for policy decisions in the Awash Basin por Karimi, P., Bastiaanssen, Wim G.M., Sood, A., Bastidas-Obando, E., Dost, R.

“…Water Accounting Plus (WA+) is a framework that summarizes complex hydrological processes and water management issues in river basins. …”
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Congruent phylogeographic patterns of eight tree species in Atlantic Central Africa provide insights on the past dynamics of forest cover por Dauby, G., Duminil, J., Heuertz, M., Koffi, G.K., Stevart, T., Hardy, Olivier J.

“…By contrast, southern ACA (Gabon) displayed low congruence among species that may reflect less drastic past forest fragmentation or a more complex history of vegetation changes. Finally, we also highlight the potential impact of current environmental barriers on spatial genetic structures.…”
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Incomplete systemic movement of Xanthomonas campestris pv. musacearum and the occurrence of latent infections in xanthomonas wilt-infected banana mats por Ocimati, W., Nakato, G.V., Fiaboe, K.K.M., Beed, Fenton D., Blomme, Guy

“…Management of banana xanthomonas wilt (XW) (caused by Xanthomonas campestris pv. musacearum, Xcm) has been impeded by poor adoption of control options that are complex, cumbersome and costly. To improve XW management, this study investigated Xcm survival and latent infections in subsequent generations, survival of latently infected planting materials (suckers), incidence of latent infections in symptomless plants in mats having diseased plants, and XW status across farms and markets in districts previously devastated but currently endemic. …”
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Conventional breeding, marker-assisted selection, genomic selection and inbreeding in clonally propagated crops: a case study for cassava por Ceballos, H., Kawuki, Robert S., Gracen, V.E., Yencho, George Craig, Hershey, Clair H.

“…Available information suggests that heterosis, non-additive genetic effects and within-family variation are relatively large for complex traits such as fresh root yield, moderate for dry matter or starch content in the roots, and low for defensive traits (pest and disease resistance) and plant architecture. …”
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C126 - Water resources management. 10 units. [Training/Course material]. por Smith, L.

“…This module is about water resources, their complex relationship with the environment and the economy and the growing problem of water scarcity and the various options that exist to deal with this problem. …”
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Agricultural research for nutrition outcomes – rethinking the agenda por McDermott, John J., Johnson, Nancy L., Kadiyala, S., Kennedy, G., Wyatt, Amanda

“…Critical roles for agricultural research in multisectoral actions will be better metrics, indicators and research studies for diet quality and better evaluation methods – both randomized trials for specific interventions and contribution analysis through theories of change for more complex multisectoral system interventions to prevent stunting and micronutrient deficiencies. …”
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