Resultados de búsqueda - EHESS~

Brick kilns and agricultural productivity in Bangladesh: Evidence from satellite data and a natural experiment por Mahzab, Moogdho, Bakhtiar, M. Mehrab, Mattsson, Martin, Anowar, Md Sadat

“…However, the sector remains largely informal and weakly regulated, with widespread extraction of fertile topsoil and substantial emissions of particulate matter and black carbon. These practices raise growing concerns about long-term environmental degradation, agricultural productivity, and food security. …”
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Carbon sequestration in tropical forests and water: a critical look at the basis for commonly used generalizations por Malmer, A., Murdiyarso, Daniel, Bruijnzeel, L.A., Ilstedt, Ulrik

“…The basics of forest and water relations are frequently said to be well understood but there is a pressing need to better understand and predict the hydrological effects of land-use and climate change in the complex and dynamic landscapes of the tropics. …”
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Rights to land, forests and carbon in REDD+: insights from Mexico, Brazil and Costa Rica por Corbera, E., Estrada, M., May, P., Navarro, G., Pacheco, P.

“…Land tenure and carbon rights constitute critical issues to take into account in achieving emission reductions, ensuring transparent benefit sharing and determining non-permanence (or non-compliance) liabilities in the context of REDD+ strategies and projects. …”
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Setting the agenda: Climate change adaptation and mitigation for food systems in the developing world por Wollenberg, Eva Karoline, Herrero, Mario, Wassmann, Reiner, Neufeldt, Henry, Vermeulen, Sonja J., Rosswall, T., Campbell, Bruce M., Hellin, Jonathan, Jarvis, Andy, Challinor, Andrew J., Snook, Laura K., Smakhtin, Vladimir U., Kinyangi, James

“…Mitigation requires transitioning to ‘low climate impact’ agriculture that reduces emissions while achieving food security, economic well-being and sustainability. …”
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An overview for demographic and environmental issues in sustainable agriculture in sub-Saharan Africa por Mohamed-Saleem, M.A., Fitzhugh, H.A.

“…As a result, the traditional balance between people, their habitat and socio-economic systems is fast disappearing. Excessive deforestation, land clearing and cultivation are occurring in an attempt to meet rising food demands. …”
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Analysis of household attitudes toward the purchase of livestock products and fish in Cameroon por Tambi, N.E.

“…Results indicate that fish is a relative necessity in Cameroon and is often substituted for beef and chicken by households whose profiles include being of low income levels, having large household sizes, are of middle age and are less educated. …”
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Groundwater resources of Uzbekistan: an environmental and operational overview por Rakhmatullaev, Shavkat A., Huneau, F., Kazbekov, Jusipbek S., Celle-Jeanton, H., Motelica-Heino, M., Le Coustumer, Philippe, Jumanov, J.

“…Moreover hydraulically related groundwater has also been affected. Excessive irrigation has lead to land salinization, which now threatens the soil quality of significant areas where crop yields would be at risk in the future. …”
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Large or small? Rethinking China s forest bioenergy policies por Kahrl F, Su Y, Tennigkeit, Timm, Yang Y, Xu, Jianchu

“…China s forest bioenergy policies are evolving against the backdrop of pressing national energy challenges similar to those faced by OECD countries, and chronic rural energy challenges more characteristic of developing countries. …”
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Sustainable intensification: What is its role in climate smart agriculture? por Campbell, Bruce M., Thornton, Philip K., Zougmoré, Robert B., Asten, Piet J.A. van, Lipper, Leslie

“…SI is an essential means of adapting to climate change, also resulting in lower emissions per unit of output. With its emphasis on improving risk management, information flows and local institutions to support adaptive capacity, CSA provides the foundations for incentivizing and enabling intensification. …”
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Towards greater resilience in the drylands: trees are the key por Wagner, B., Leeuw, Jan de, Njenga M, Iiyama, Miyuki, Jamnadass, Ramni H.

“…It is not just a rehashing of the pressing problems plaguing people living in drylands, but rather a fresh look at what approaches work best, with a specific focus on the role of trees in fostering resilient communities (see definition of the term resilience in Box 1). …”
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Snap bean pests and diseases in Sumapaz, Colombia: their present status and implications por Velásquez, J.G., Prada, P., Henry, Guy

“…Initial studies on snap bean production in Sumapaz, Colombia, indicated excessive use of pesticides in the region. A more in- depth investigation of how chemicals are used to control insects and diseases, and the economic and agroecological implications was thus initiated in 1989. …”
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Diagnosis of soil fertility constraints in bean based cropping systems: review of research results por Mughogho, SK, Wortmann, Charles S.

“…Soil fertility factors affecting bean growth and N fixation, as evidenced in research conducted in Africa, are reviewed as follows: soil type, hydrogen ion concn., excess Mn and Al, and P deficiency. Most of the nutritional disorders of the bean plant found in these regions are linked to low soil pH, Al and Mn toxicities, low available P, P fixation, low CEC, and low availability of basic nutrients. …”
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Le rôle des médias dans le développement agricole et rural des pays ACP por Technical Centre for Agricultural and Rural Cooperation

“…Il a réuni des acteurs issus de différents médias (presse écrite, télévision, production vidéo, blogues, etc.) qui ont débattu du rôle des médias par rapport à la vulgarisation agricole, au changement climatique et à l'égalité hommes-femmes. …”
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Mycoplasma-like diseases por Granada, G., Kitajima, E.

“…Since 1967, many diseases have been associated with mycoplasma- like microorganisms (MLM), especially when symptoms have been characterized by general plant chlorosis, stunting, excessive proliferation of branches (witches' broom), bud proliferation and disorders of floral organs (phyllody and virescence). …”
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Review: the impact of HIV on agricultural livelihoods in southern Uganda and the challenges of attribution por Taylor, B., Bukenya, D., Asten, Piet J.A. van, Agol, D., Pain, A., Seeley, J.

“…While acknowledging that the epidemic has devastated many families and communities because of excess morbidity and mortality, this review explores other causes of change in agriculture practices and production in southern Uganda. …”
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Assess whole-farm trade-offs and synergies for climate-smart agriculture por Mwongera, Caroline, Läderach, Peter R.D., Acosta, Mariola, Ampaire, Edidah L., Eitzinger, Anton, Lamanna, Christine, Mwungu, Chris Miyinzi, Shikuku, Kelvin Mashisia, Twyman, Jennifer, Winowiecki, Leigh Ann

“…Research shows that climate-smart agriculture (CSA) is beneficial in increasing productivity, promoting resilience and reducing greenhouse gas emissions. Achieving benefits in all three dimensions is difficult, and so necessary choices among competing investments and objectives must be made. …”
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Cattle production under grazing with improved forages in the lowland tropics of Colombia por Sotelo Cabrera, Mauricio Efren, Gutiérrez Solís, Jhon Freddy, Peters, Michael, Hincapié Carvajal, Belisario, Burkart, Stefan

“… * The International Center for Tropical Agriculture (CIAT) works on sustainable intensification (SI) of livestock systems through improving their efficiency and productivity while mitigating negative environmental effects (e.g. deforestation, greenhouse gas emissions). * SI of livestock systems can be achieved through selection and breeding and subsequent adoption of improved forages, which can either be used as stand-alone technology or be part of a (e.g. silvopastoral) system…”
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Involvement of women farmers in seed yam production in Abia state, Nigeria por Ironkwe, A., Unamma, R.P., Asiedu, Robert

“…However, lack of access to relevant farm inputs, the tediousness of the job, lack of access to agricultural information and assured marking outlets, were the most pressing problems encountered by the women farmers in seed yam production. …”
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Spiralling whitefly, Aleurodicus dispersus, a recent invader and new cassava pest por Neuenschwander, Peter

“…In coastal Benin, population levels declined sharply in 1994. The necessity of introducing another biological control agent, the predator Nephaspis oculatus Blatchley (=amnicola Wingo) (Col., Coccinellidae), remains therefore unclear.…”
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Nitrate and nitrite acute poisoning in feedlot cattle caused by ingestion of Portulaca oleracea por Sosa, Emiliano, Azaldegui, Ignacio, Barale, Joaquin, Sainz Rozas, Hernan Rene, Scioli, Maria Valeria, Poo, Juan Ignacio, Lauro, Adriana Araceli, Ovelar, María Florencia, Pachiani, Martina, Garcia, Juan Agustin, Canton, German Jose

“…Nitrate and nitrite poisoning is a frequently lethal disease diagnosed in production animals due to the consumption of excessive levels in feed or water. The aim of this report was to describe an acute outbreak of nitrate and nitrite poisoning in two feedlot pens, affecting 17.5% and 5.7% of 8-month-old calves, respectively, due to the consumption of Portulaca oleracea (“purslane”) present in the pen. …”
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