Resultados de búsqueda - "complexity"

Multi-stakeholder processes for managing wastewater use in agriculture por Evans, Alexandra E.V., Raschid-Sally, Liqa, Cofie, Olufunke O.

“…Wastewater use in agriculture is a complex phenomenon since it transcends typical sectoral and geographical policy and planning boundaries, and is influenced by opinions and perceptions. …”
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Working wetlands: a new approach to balancing agricultural development with environmental protection por International Water Management Institute

“…The trade-off between environmental protection and development is most acute in dynamic and complex ecosystems such as wetlands. Wetlands ?work? …”
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Complete sequences of mitochondria genomes of Aedes aegypti and Culex quinquefasciatus and comparative analysis of mitochondrial DNA fragments inserted in the nuclear genomes por Behura, S.K., Lobo, N.F., Haas, B., Bruyn, B. de, Lovin, D.D., Shumway, M.F., Puiu, D., Romero Severson, J., Nene, Vishvanath M., Severson, D.W.

“…Our study provides new insights on understanding the roles of nuclear mtDNA sequences in genome complexities of these mosquitoes.…”
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Identification of immediate response genes dominantly expressed in juvenile resistant and susceptible Biomphalaria glabrata snails upon exposure to Schistosoma mansoni por Ittiprasert, W., Miller, A., Myers, J., Nene, Vishvanath M., El-Sayed, N.M., Knight, M.

“…Although Mendelian genetics governs adult resistance to infection, juvenile resistance and susceptibility are complex traits. In this study, suppression subtractive hybridization was used to construct forward and reverse cDNA libraries to identify genes involved in the immediate response of juvenile resistant (BS-90), non-susceptible (LAC2) snails, and susceptible (NMRI) snails after early exposure to S. mansoni. …”
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Identifying key entry-points for strategic management of smallholder farming systems in sub-Saharan Africa using the dynamic farm-scale simulation model NUANCES-FARMSIM por Wijk, Mark T. van, Tittonell, Pablo A., Rufino, Mariana C., Herrero, Mario, Pacini, C., Ridder, N.A. de, Giller, Kenneth E.

“…African smallholder farming systems are complex, dynamic systems with many interacting biophysical subcomponents. …”
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Livestock in mixed farming systems in South Asia por Parthasarathy Rao, P., Birthal, P.S.

“…Mixed farming systems however, are extremely complex and heterogeneous in terms of crops grown, livestock species raised and in their responses to development initiatives. …”
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Constraints and opportunities for water savings and increasing productivity through Resource Conservation Technologies in Pakistan por Ahmad, M.D., Masih, I., Giordano, Mark

“…While the impacts of RCTs on yields are easy to measure and explain, impacts on water savings are not well understood beyond the field scale because of the complex movement of water. This paper uses both physical measurements and farmer survey data from the rice-wheat cropping system of Punjab, Pakistan to explain the main drivers of RCT adoption and their impacts on land and water productivity and water savings across scales. …”
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Local calibration of remotely sensed rainfall from the TRMM satellite for different periods and spatial scales in the Indus Basin por Cheema, Muhammad Jehanzeb Masud, Bastiaanssen, Wim G.M.

“…The GDA technique proved to be better, with higher efficiency and smaller error in complex mountainous terrains. The deviation between TRMMdata and rain gauge data was decreased considerably from 10.9% (pre-calibration at 625 km2) to 6.1% (post-calibration at 3125 km2) for annual time periods. …”
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Sources of vulnerability to a variable and changing climate among smallholder households in Zimbabwe: A participatory analysis por Rurinda, J.P., Mapfumo, Paul, Wijk, Mark T. van, Mtambanengwe, F., Rufino, Mariana C., Chikowo, Regis, Giller, Kenneth E.

“…There was no evidence of a simple one-to-one relationship between vulnerability and farmer resource endowment, suggesting that vulnerability to climate variability and change is complex and not simply related to assets. Alongside climate variability and change, farmers were also faced with biophysical and socioeconomic challenges such as lack of fertilizers, and these problems had strong interactions with adaptation options to climate change. …”
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Economic trade-offs of biomass use in crop-livestock systems: Exploring more sustainable options in semi-arid Zimbabwe por Homann-Kee Tui, Sabine, Valbuena, Diego, Masikati, Patricia, Descheemaeker, Katrien K., Nyamangara, Justice, Claessens, Lieven, Erenstein, Olaf, Rooyen, Andre F. van, Nkomboni, D.

“…In complex mixed crop-livestock systems with limited resources and biomass scarcity, crop residues play an important but increasingly contested role. …”
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Comparative QTL map for white mold resistance in Common Bean, and characterization of partial resistance in dry bean lines VA19 and I9365-31 por Soule, M, Porter, L., Medina, JI, Santana, GP, Blair, Matthew W., Miklas, PN

“…Disease resistance has been identified, but breeding is hampered by a paucity of resistance sources and complex inheritance, as numerous quantitative trait loci (QTL) conditioning partial resistance have been found. …”
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Infection-interactions in Ethiopian village chickens por Bettridge, Judy M., Lynch, Stacey E., Brena, M.C., Melese, K., Dessie, Tadelle, Terfa, Z.G., Desta, T.T., Rushton, S., Hanotte, Olivier H., Kaiser, P., Wigley, Paul, Christley, Robert M.

“…Constrained ordination, a technique for analysis of ecological community data, was used to explore this complex dataset and enabled potential relationships to be uncovered and tested despite the different measurements used for the different parasites. …”
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Potential exposure of a classical biological control agent of the soybean aphid, Aphis glycines, on non-target aphids in North America por Wyckhuys, Kris A.G., Koch, RL, Kula, RR, Heimpel, George E.

“…The extent of geographic overlap between B. communis and native aphids based upon Climex modeling was 17 28% for A. monardae, 13 22% for A. oestlundi, 46 55% for A. asclepiadis and 12 24% for the A. asclepiadis species complex. The estimated overall probability of potential exposure of B. communis on native aphids was relatively low (P = 0.115) for A. oestlundi and high (P = 0.550) for A. asclepiades. …”
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Resource use and food self-sufficiency at farm scale within two agro-ecological zones of Rwanda por Bucagu, C., Vanlauwe, Bernard, Wijk, Mark T. van, Giller, Kenneth E.

“…Closing the maize yield gap would result in doubling the energy and protein intake in Simbi. In such complex agricultural systems, there is a need to apply an integrated and multi-dimensional approach to understand differences among farms, identify limitations to food production and explore realistic options to ensure sustainable agricultural production and food self-sufficiency.…”
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Phenotypic approaches to drought in cassava: review por Okogbenin, Emmanuel, Setter, Tim L., Ferguson, Morag E., Mutegi, R, Ceballos, Hernán, Olasanmi, B, Fregene, Martin A.

“…Modern breeding using advances in genomics and improved genotyping, is facilitating the dissection and genetic analysis of complex traits including drought tolerance, thus helping to better elucidate and understand the genetic basis of such traits. …”
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Games to create awareness and design policies for transboundary cooperation in river basins: lessons from the Shariva Game of the Mekong River Commission por Douven, W., Mul, Marloes L., Son, L., Bakker, Nico, Radosevich, G., Hendriks, A.

“…Playing the game proved an important aspect in training and education of such complex systems. The study also shows the role games can play in policy analysis, in particular the way the game provided insight in the design of the policy and the development of procedures, and their function to review and update policies and procedures. …”
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Major animal health problems of market oriented livestock development in Fogera woreda por Amsalu, K.

“…Colic, wound and respiratory disease complex were considered as important in donkeys. …”
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Comparative phylogeography in rainforest trees from Lower Guinea, Africa por Heuertz, M., Duminil, J., Dauby, G., Savolainen, V., Hardy, Olivier J.

“…Our work suggests that currently recognized tree taxa or suspected species complexes can contain strongly differentiated genetic lineages, which could lead to misinterpretation of phylogeographic patterns. …”
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Climatic gradients along the windward slopes of Mount Kenya and their implication for crop risks. Part 2: crop sensitivity por Philippon, Nathalie, Baron, Christian, Boyard-Micheau, Joseph, Adde, Antoine, Leclerc, Christian, Mwongera, Caroline, Camberlina, Pierre

“…However, beyond this apparent simplicity, more complex aspects emerge of the crop–climate relationships. …”
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Mud, muddle and models in the knowledge value chain to action on tropical peatland issues por Noordwijk, Meine van, Matthews R, Agus, F., Farmer J, Verchot, Louis V., Hergoualc'h, Kristell, Persch, S., Tata HL, Lusiana B, Widayati, A., Dewi, S.

“…A knowledge value-chain that is long and complex links (a) fundamental understanding of peat and peatland processes leading to sciencebased quantification and default values, (b) willingness and (c) ability to act towards emission reduction, and ultimately (d) to local, national and global actions that effectively provide rules, incentives and motivation to conserve peat and reduce emissions. …”
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