Resultados de búsqueda - "relator"

Production and nutrient content of earthworm casts in a tropical agrisilvicultural system por Norgrove, L., Hauser, S.

“…The ratio of soil:cast nutrient concentrations were related by negative power functions to soil nutrient concentrations for all nutrients and organic carbon. …”
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Index insurance and climate risk management: Addressing social equity por Fisher, Eleanor, Hellin, Jonathan, Greatrex, Helen, Jensen, Nathaniel D.

“…It proposes a framework for unpacking social equity related to equitable access, procedures, representation and distribution within index insurance schemes. …”
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Bridging Humanitarian Responses and Long-Term Development through Transformative Changes—Some Initial Reflections from the World Bank’s Adaptive Social Protection Program in the Sa... por Béné, Christophe, Cornelius, Alex, Howland, Fanny C.

“…In the context of increasing climate-related extreme events and other crises, the concept of adaptive social protection (ASP) has been recognized as a potentially effective policy response to reduce the impacts of these shocks and stressors on vulnerable households. …”
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How countries link REDD+ interventions to drivers in their readiness plans: implications for monitoring systems por Salvini, Giulia, Herold, Martin, Sy, Veronique de, Kissinger, G., Brockhaus, Maria, Skutsch, M.

“…Moreover, driver-specific interventions often relate to drivers not only inside but also outside the forest sector. …”
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Origin and Alteration of Organic Matter in Termite Mounds from Different Feeding Guilds of the Amazon Rainforests por Siebers, N., Martius, C., Eckhardt, K-U., García, M.V.B., Leinweber, P., Amelung, Wulf

“…The impact of termites on nutrient cycling and tropical soil formation depends on their feeding habits and related material transformation. The identification of food sources, however, is difficult, because they are variable and changed by termite activity and nest construction. …”
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Forests and trees for social adaptation to climate variability and change por Pramova, E., Locatelli, Bruno, Djoudi, H., Somorin, O.A.

“…We review the scientific literature related to ecosystem‐based adaptation (EBA) with forests and trees, and highlight five cases in which forests and trees can support adaptation: (1) forests and trees providing goods to local communities facing climatic threats; (2) trees in agricultural fields regulating water, soil, and microclimate for more resilient production; (3) forested watersheds regulating water and protecting soils for reduced climate impacts; (4) forests protecting coastal areas from climate‐related threats; and (5) urban forests and trees regulating temperature and water for resilient cities. …”
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Smallholders' Tree Planting Activity in the Ziro Province, Southern Burkina Faso: Impacts on Livelihood and Policy Implications por Etongo, D., Djenontin, I.N.S., Kanninen, M., Fobissie, K.

“…Farm households that were relatively poor, had smaller workforces and smaller farm sizes were not willing to continue tree planting. …”
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The key physical parameters governing frictional dissipation in a precipitating atmosphere por Makarieva, A.M., Gorshkov, V.G, Nefiodov, A.V, Sheil, D., Nobre, A.D, Bunyard, P, Li, B.L.

“…The dependence of HP on surface temperature, relative humidity, temperature lapse rate, and degree of condensation in the ascending air were investigated. …”
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Integrated soil management for the dry savanna zone of West Africa: legume rotation and fertilizer N por Carsky, R.J., Oyewole, B., Tian, G.

“…The benefit of specific legume fallows to subsequent maize was mostly related to above ground N of the previous legume at Bauchi, where residues were protected from fire and grazing. …”
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Soil organic matter dynamics after addition of nitrogen15 labeled leucaena and dactyladenia residues por Vanlauwe, Bernard, Sanginga, N., Merckx, Roel

“…Highly significant (P < 0.001) relationships between RDN present in the particulate organic matter (POM) and uptake of RDN by maize indicated the relatively high availability of RDN in the POM. Fractionating the SOM pool into different particle-size classes yielded useful information on the relative contributions of the different SOM fractions to N turnover and availability. …”
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Gene diversity among botanical varieties in peanut (Arachis hypogaea L.) por Ferguson, Morag E., Bramel-Cox, P.J., Chandra, S.

“…Landraces from Africa and Asia were more closely related to each other than to those from South America. …”
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Quantifying variability in maize yield response to nutrient applications in the northern Nigeria Savanna por Shehu, B.M., Merckx, Roel, Jibrin, J.M., Kamara, A., Rurinda, J.

“…Diagnostic on-farm nutrient omission trials were conducted over two cropping seasons (2015 and 2016) to assess soil nutrients related constraints to maize yield in the northern Nigerian savanna agro-ecological zone and to quantify their variability. …”
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Population size may shape the accumulation of functional mutations following domestication por Jianhai Chen, Pan Ni, Xinyun Li, Han Jianlin, Jakovlić, Ivan, Chengjun Zhang, Shuhong Zhao

“…Results Here, we synthesized 62 whole genome data in eight domesticated species (cat, dog, pig, goat, sheep, chicken, cattle and horse) and compared domesticates with their wild (or ancient) relatives. Genes with significantly different selection pressures (revealed by nonsynonymous/synonymous substitution rate ratios, Ka/Ks or ω) between domesticated (Dω) and wild animals (Wω) were determined by likelihood-ratio tests. …”
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Progress in varietal improvement for increasing upland rice productivity in the tropics por Saito, Kazuki, Asai, Hidetoshi, Zhao, Dule, Laborte, Alice G., Grenier, Cécile

“…The current share of upland rice area in total rice area is related to rainfall and gross national income per capita, especially in Africa, and higher share is associated with lower rice self-sufficiency at national level. …”
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Contributions of soil chemical and physical properties in the dynamics of soil quality in the southern Cameroon plateau shifting agricultural landscape por Nyeck, B., Mbogba, M.N., Njilah, I.K., Yemefack, Martin, Bilong, P.

“…On the contrary, under fallows, IQSg is relatively low; these two types of contributions are nearly equivalents. …”
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Timing and distribution of attack by the banana weevil (Coleoptera: curculionidae) in East African highland banana (Musa spp.) por Abera, A.M.K., Gold, Cliford S., Kyamanywa, S.

“…At the same time, 85% of flowered plants were at- tacked with mean oviposition of 15 eggs (range 0-41) per plant. An inverse relation- ship existed between weevil population density and eggs/female/plant. …”
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Seasonal preference of Awassi sheep for atriplex shrubs suitable for Mediterranean rangelands por Wamatu, Jane, Louhaichi, Mounir, Rubanza, C.D.K., Alkhtib, Ashraf, Rischkowsky, Barbara A.

“…The relative preference of Awassi sheep for four promising Atriplex species, A. halimus, A. nummularia, A. canescens and A. lentiformis was tested in cafeteria trials.Atriplex species were offered to sixteen sheep in cafeteria-type experiments during two seasons, spring and autumn.After an adaptation period of 7 days, sheep were offered the species over eight consecutive days.The species were placed in troughs for two hours in the morning after overnight fasting.Sheep were housed individually in pens adjacent to each other.In both seasons, whole species and their botanical fractions were evaluated for chemical composition and in vitro digestibility.The variability of nutritive value among species was not dependent on season or botanical fraction.Time series analysis showed that intake levels and ranking of species did not change over the eight days.Average daily proportions (%) of whole shrub eaten were A. halimus (70.9) A. nummularia (70), A. lentiformis (65.3), and A. canescens (57.9).In autumn, the same order of consumption was maintained, though intake levels tended to be lower compared to spring.The behavioral pattern revealed that the number of return visits to troughs and time spent feeding on species did not influence intake levels.The botanical structure of species explained 20% of the variation in proportion of intake of whole species.The proportion of leaf was the major contributor to variation in proportion of intake of whole species.Relative preference of whole species was explained by intake, nutritive value and fractional proportions of the botanical fractions.…”
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Building soil carbon stocks to enhance adaptation and mitigate climate change in climate-smart landscapes, Southern Ethiopia por Tadesse, Meron, Simane, Belay, Ambaw, Gebermedihin, Recha, John W.M., Abera, Wuletawu, Tamene, Lulseged D., Demeke, Getamesay, Mekonnen, Kindu, Radeny, Maren A.O., Solomon, Dawit

“…Climate change is a major challenge, particularly for Ethiopia’s rural populations who depend on rainfall for subsistence farming and are therefore more vulnerable to climate-related risks. Agriculture accounts for more than 40% of Ethiopia’s gross domestic product (GDP) (UNDP, 2015), and contributes significantly to greenhouse gas (GHG) emissions (FDRE, 2015). …”
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Factors affecting biological control of cassava mealybug by exotic parasitoids: a ratio dependent supply demand driven model por Gutiérrez, A., Neuenschwander, Peter, Alphen, J. van

“…The causes for the failure of the related parasitoid E. diversicornis (Howard) to establish were examined. 2. …”
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Gendered aspirations and occupations among rural youth, in agriculture and beyond: A cross-regional perspective por Elias, Marlène, Mudege, Netsayi N., López, Diana E., Najjar, Dina, Kandiwa, Vongai, Luis, Joyce S., Yila, Jummai Othniel, Tegbaru, Amare, Ibrahim, Gaya, Badstue, Lone B., Njuguna-Mungai, Esther, Bentaibi, Abderahim

“…Framing our analysis within a relational approach, we contend that various gender norms that discriminate against women in agriculture dissuade young women from aspiring for agriculture-related occupation. …”
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