Resultados de búsqueda - "Chang’an"

Effects of manipulated herbivore inputs on nutrient flux and decomposition in a tropical rainforest in Puerto Rico por Schowalter, TD, Fonte, Steven J., Geaghan, J, Wang, J.

“…We evaluated treatment effects as changes in flux rates for NO3, NH4 and PO4, measured as decomposition rate of leaf litter in litterbags and as adsorption in ion-exchange resin bags at the litter–soil interface. …”
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Land-use effects on phosphorus fractions in cerrado oxisols por Neufeldt, Henry, Silva, J.E. da, Ayarza, Miguel Angel, Zech, W.

“…Fertilisation after land-use change only increased levels of inorganic P (Pi) forms, the increase being most accentuated in the labile Pi fraction. …”
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Status of Stylosanthes development in other countries.II. Stylosanthes development and utilisation in China and southe-east Asia por Guodao, L, Phaikaew, C, Stür, Werner W.

“…In 1976, an outbreak of anthracnose in S. humilis prompted a change to S. hamata cv. Verano in Thailand. S. guianensis cv. …”
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Tracing evolutionary and developmental implications of mitochondrial stoichiometric shifting in the common bean por Arrieta Montiel, MP, Lyznik, A, Woloszynska, M, Janska, H, Tohme, Joseph M., Mackenzie, S

“…Copy number shifting within the mitochondrial genome results in a 1000- to 2000-fold change, so that substoichiometric forms are estimated at less than one copy per every 100 cells. …”
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Dinámicas campesinas y fitomejoramiento participativo : El caso de los sorgos blancos (Sorghum bicolor, L. Moench) en la región norte de Nicaragua por Trouche, G., Hocde, H, Aguirre Acuña, S., Martínez Sanchez, F., Gutiérrez Palacios, N.D.

“…Among the results emerge the recent changes concerning the varieties and the cropping systems, the rapid adoption of the short-cycle tortillero sorghum by the mean of informal processes of seed exchanges; the original traits of the millón varieties, like their extreme sensitivity to photoperiod, have been quantified. …”
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Impact assessment of sunflower in Zimbabwe por Murata, M., Anandajayasekeram, P., Mudhara, M., Martella, D., Mazhangara, E.P.

“…A sensitivity analysis of the estimated ROR indicated that ROR is sensitive to changes in research costs. The net environmental effect of sunflower R&D was difficult to assess, in the absence of biophysical data to conduct a systematic analysis. …”
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The role of public-private partnerships and collective action in ensuring smallholder participation in high value fruit and vegetable supply chains por Narrod, C., Roy, Devesh, Okello, J., Avendaño, B., Rich, R., Thorat, A.

“…Food retailers have developed protocols relating to pesticide residues, field and packinghouse operations, and traceability. In this changing scenario where food safety requirements are getting increasingly stringent, there are worries regarding the livelihood of the poor since companies that establish production centers in LDCs might exclude them. …”
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The FIGS (Focused Identification of Germplasm Strategy) approach identifies traits related to drought adaptation in Vicia faba genetic resources por Khazaei H, Street K, Bari, A., Mackay M, Stoddard FL

“…Efficient methods to explore plant agro-biodiversity for climate change adaptive traits are urgently required. The focused identification of germplasm strategy (FIGS) is one such approach. …”
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An inventory of crop wild relatives of the United States por Khoury, Colin K., Greene S, Wiersema, John H., Maxted, Nigel, Jarvis, Andy, Struik, Paul C.

“…The use of crop wild relatives (CWRs) in breeding is likely to continue to intensify as utilization techniques improve and crop adaptation to climate change becomes more pressing. Significant gaps remain in the conservation of these genetic resources. …”
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Effect of rainfall intensity, slope, land use and antecedent soil moisture on soil erosion in an arid environment por Ziadat, Feras M., Taimeh AY

“…Most climate change scenarios predict a significant increase in the frequency of high intensity rainfall events especially in the dry areas, which will increase runoff and soil erosion. …”
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Asia 2011-2015 por International Center for Tropical Agriculture

“…Focus research on cassava and on forages for livestock systems, seeking a direct involvement with three forthcoming CGIAR Research Programs (CRPs): Roots and Tubers, Livestock and Fish, and Climate Change. 2. Increase the profile of research activities in tropical soil fertility particularly on cassava and forage systems with a direct link with two other forthcoming CRPs: Integrated Systems for the Humid Tropics and Water, Land and Ecosystems. 3. …”
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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.

“…The framework guides users through a step-wise procedure for assessing how interventions are likely to change the production system and value chain. Through providing rapid results and flagging the main environmental issues, it can support evidence-based discussions of alternative development pathways.…”
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Gender, assets, and market-oriented agriculture: learning from high-value crop and livestock projects in Africa and Asia por Quisumbing, Agnes R., Rubin, Deborah, Manfre, C., Waithanji, Elizabeth M., Bold, M. van den, Olney, Deanna K., Johnson, Nancy L., Meinzen-Dick, Ruth S.

“…Yet the intersection between women’s asset endowments and their ability to participate in and benefit from agricultural interventions receives minimal attention. This paper explores changes in gender relations and women’s assets in four agricultural interventions that promoted high value agriculture with different degrees of market-orientation. …”
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Does aquaculture add resilience to the global food system? por Troell, M., Naylor, R.L., Metian, M., Beveridge, Malcolm C.M., Tyedmers, P.H., Folke, C., Arrow, K.J., Barrett, S., Crepin, A.S., Ehrlich, P.R., Gren, A., Kautsky, N., Levin, S.A., Nyborg, K., Osterblom, H., Polasky, S., Scheffer, M., Walker, B.H., Xepapadeas, T., Zeeuw, A. de

“…Using portfolio theory as a conceptual framework, we explore how current interconnections between the aquaculture, crop, livestock, and fisheries sectors act as an impediment to, or an opportunity for, enhanced resilience in the global food system given increased resource scarcity and climate change. Aquaculture can potentially enhance resilience through improved resource use efficiencies and increased diversification of farmed species, locales of production, and feeding strategies. …”
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Flesh characteristics: Estimation of genetic parameters and correlated responses to selection for growth rate in the GIFT strain por Hamzah, A., Nguyen Hong Nguyen, Mekkawy, Wagdy, Ponzoni, R.W., Hooi Ling Khaw, Hoong Yip Yee, Abu Bakar, Khairul Rizal, Mohd Nor, S.A.

“…Our results indicate that selection for high growth increased harvest weight in the Selection line relative to the Control line but it did not change the flesh characteristics of the GIFT strain.…”
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Knowledge, attitudes and practices related to African Swine Fever within smallholder pig production in northern Uganda por Chenais, E., Boqvist, Sofia, Sternberg Lewerin, Susanna, Emanuelson, Ulf, Ouma, Emily A., Dione, Michel M., Aliro, T., Crafoord, F., Masembe, C., Stahl, K.

“…To control ASF and reduce its impact, initiatives that stimulate changes in management are needed. Because the behaviour of all actors in the value chain is largely influenced by the deep rural poverty in the region, this needs to be combined with efforts to reduce rural poverty.…”
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Mapping of soil properties and land degradation risk in Africa using MODIS reflectance por Vågen, Tor-Gunnar, Winowiecki, Leigh Ann, Tondoh, Jérôme E., Tamene, Lulseged D., Gumbricht, Thomas

“…There is a need for up-to-date assessments and maps of soil properties and land health at scales relevant for decision-making and management, including for properties that are dynamic and hence change in response to management. Also, there is a need for approaches to soil mapping that capture the ever increasing effects that humans are having on the environment in general and specifically on soil properties worldwide. …”
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The gendered impacts of agricultural asset transfer projects: Lessons from the Manica smallholder dairy development program por Johnson, Nancy L., Njuki, Jemimah, Waithanji, Elizabeth M., Nhambeto, M., Rogers, M., Kruger, E.H.

“…Subsequently, the training was expanded to two members per household to increase the capacity within households to care for cows, a change that resulted in the training of a significant number of women. …”
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Do hydrologic rigor and technological advance tell us more or less about transboundary water management? por Giordano, Mark, Suhardiman, Diana, Peterson-Perlman, J.

“…Combining this information with ideas embedded in legal instruments such as the UN Convention on the Law of the Non-Navigational Uses of International Watercourses has given us new ways to look at the adequacy, and inadequacy, of existing transboundary institutions and to suggest policy change and institution building. But do precise data and clearly codified definitions always improve our understanding and decision making? …”
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Simulation-optimization approach for evaluating the feasibility of managed aquifer recharge in the Samail Lower Catchment, Oman por Ebrahim, Girma Yimer, Jonoski, A., Al-Maktoumi, A., Ahmed, M., Mynett, A.

“…Sensitivity analysis was also completed to examine the overall response of the simulation-optimization results to changes in hydraulic conductivities and maximum injection rates. …”
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