Resultados de búsqueda - "Savannah"

Further observations on nematodes associated with rice in Côte d'Ivoire, The Gambia, Guinea and Togo por Coyne, Danny L., Hunt, D.J., Plowright, R.A., Darboe, M.L.K.

“…Ninety-nine species from 34 genera were recovered from rainfed upland, hydromorphic and lowland rice ecosystems in the forest and savannah agroecological zones. Helicotylenchus, represented by 11 species, was the most prevalent genus in Côte d'Ivoire, Guinea and Togo. …”
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The impact of climate changes during the Holocene on vegetation in northern French Guiana por Freycon, V., Krencker, M., Schwartz, D., Nasi, Robert, Bonal, D.

“…We found that none of the forest sites underwent major disturbances during the Holocene, i.e. they were not replaced by C4 savannahs or C4 forest savannahs for long periods. …”
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Pastoralism and drought. A case study of the Borana of southern Ethiopia por Donaldson, T.J.

“…The Borana pastoralists occupy the savannah region of southern Ethiopia and northern Kenya. …”
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Growth characteristics of ten Mucuna accessions and their effect on speargrass Imperata cylindrica (L.) dry matter por Chikoye, David, Ekeleme, F.

“…Studies were conducted from 1997 to 1999 in the forest/savannah transition zone to identify growth characteristics that enhance the competitive ability of Mucuna accessions against I. cylindrica. …”
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Myths about slash and burn in physical degradation of savanna soils: impacts on Vertisols in north Cameroon por Obale‐Ebanga, F., Sevink, J., Groot, W. de, Nolte, C.

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The influence of drought stress on growth, yield, and yield components of some maize genotypes por Kamara, A.Y., Menkir, A., Badu-Apraku, Baffour, Ibikunle, O.

“…The risk of drought is high in the Sudan savannah zone of West and Central Africa because rainfall in this area is unpredictable in quantity and distribution. …”
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Rice Intensification in a Changing Environment: Impact on Water Availability in Inland Valley Landscapes in Benin por Danvi, A., Giertz, S., Zwart, Sander J., Diekkrüger, B.

“…The Soil and Water Assessment Tool was used to simulate the combined impacts of two land use scenarios defined as converting 25% and 75% of lowland savannah into rice cultivation, and two climate scenarios (A1B and B1) of the Intergovernmental Panel on Climate Change Special Report on Emissions Scenarios. …”
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A seven-year study of large mammal populations in the Sahel, West Africa por Hema, E.M., Belemsobgo, U., Ouattara, Y., Tou, I.M., Sanou, Y., Karama, M., Fa, J.E., Luiselli, L.

“…The dry savannahs of the Sahelian vegetation zone house a remarkable community of large mammals that have been less studied than their counterparts in the eastern Africa. …”
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Strong democracy, weak state: The political economy of Ghana’s stalled structural transformation por Resnick, Danielle

“…As Throup et al. (2014: 155) note with respect to agriculture, there is now a bi-partisan consensus on key policies: “the peasantry must be encouraged, nontraditional crops must be promoted, development must be brought to the North [through the Savannah Accelerated Development Authority], and investment on infrastructure should be prioritized.”…”
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Boserupian pressure and agricultural mechanization in modern Ghana por Cossar, Frances

“…A survey conducted by the International Food Policy Research Institute, in partnership with the Savannah Agriculture Research Institute, found that in some areas more than 80 percent of farmers were using machinery for at least one operation. …”
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A spatial analysis of land use and cover change and agricultural performance: Evidence from northern Ghana por Haile, Beliyou, Signorelli, Sara, Azzarri, Carlo, Guo, Zhe

“…Moreover, areas that were covered by shrubs or savannah in 1994 were more productive in 2014 relative to bare soils in 1994. …”
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Environmental effects on the tuberous roots cyanogenic potential, sugar content and taste of divergent cassava clones por Githunguri, C., Ekanayake, I.J., Imung, J., Chweya, J.

“…Minjibir in the dry Sudan savannah zone, and Ibadan, in the wet forest-savanna transition zone, represented the ABZs. …”
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Variants of East African cassava mosaic virus and its distribution in double infections with African cassava mosaic virus in Nigeria por Ogbe, F.O., Thottappilly, G., Dixon, Alfred G.O., Atiri, G.I., Mignouna, Hodeba D.

“…Isolates of variants 1 and 3 occurred mostly in the derived or coastal and southern Guinea savannahs, while variants 4 and 5 predominated in the humid forest region. …”
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Three-gene PCR and high-resolution melting analysis for differentiating vertebrate species mitochondrial DNA for biodiversity research and complementing forensic surveillance por Ouso, D.O., Otiende, M.Y., Jeneby, M.M., Oundo, J.W., Bargul, J.L., Miller, S.E., Wambua, Lillian, Villinger, J.

“…Using the approach, we identified (i) giraffe among covertly sampled meat from Kenyan butcheries, and (ii) forest elephant mitochondrial sequences among savannah elephant reference samples. This approach is being adopted for high-throughput pre-screening of potential bushmeat samples in East African forensic science pipelines.…”
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Determinants of agricultural machinery adoption intensities in Ghana por Takeshima, Hiroyuki, Liu, Yanyan

“…We do so using the three rounds of repeated cross-sectional, nationally rep-resentative data (Ghana Living Standard Surveys (GLSS) 2006, 2013, 2017), as well as unique tractor-use data in Ghana collected by IFPRI and Savannah Agricultural Research Institute (IFPRI-SARI data), and multi-dimensional indicators of agroclimatic similarity with plant-breeding locations.…”
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Economic benefits of livestock management in Ghana por Adams, Faizal, Ohene-Yankyera, Kwasi, Aidoo, Robert, Wongnaa, Camillus Abawiera

“…The main purpose of this study, therefore, is to estimate the overall economic benefits associated with traditional small ruminant systems by accounting for both market and non-market values in two agro-ecological zones (Guinea and Sudan savannah) of northern Ghana. Using a multistage sampling technique, we collected cross-sectional data from 249 small ruminant farmers for empirical analysis. …”
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Deforestation in the MERCOSUR Countries: A comparative analysis of trends, policies, and governance (2000–2024) por Piñeiro, Valeria, Papendieck, Sabine, Elverdin, Pablo, Illescas, Nelson, Jorge, Nicolás, Mingoti, Rafael, da Silveira, Hilton Luis Ferraz, Campos, Silvia Kanadani, da Pereira, Vanessa da Fonseca

“…These include the globally significant Amazon rainforest, the biodiversity-rich Cerrado savannah, and the expansive and carbon-dense Gran Chaco dry forests. …”
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Managing a reconstituted rainforest remnant and its threatened plants in Benin por Neuenschwander, P., Adomou, A., Dassou, H., Adjire, C.

“…Background: In Benin, in the savannah of the Dahomey Gap, sacred forests of <0.5 ha. preserve the rainforest flora of the adjacent forest blocks ‘Upper Guinea’ and ‘Congo Basin’. …”
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Performance of cowpea cultivars when grown as an intercrop with maize of contrasting maturities por Ewansiha, S.U., Kamara, A., Onyibe, J.E.

“…A field trial was conducted during the rainy seasons of 2008 and 2009 at Samaru in northern Guinea savannah of Nigeria to determine the performance of semi-determinate and indeterminate cowpea cultivars intercropped with extra early, early and late maize cultivars. …”
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Contribution to mango value chain development in Benin a producer perception survey por Melle, C. van, Arinloye, D.A., Coulibaly, O., Vayssières, Jean-François, Hell, K.

“…They perceive phyto-sanitary problems(mainly fruit fly infestations) as well as poor access to markets as the main causes.Mango production in Benin is concentrated in the Northern Guinean Savannah (NGS)zone, and mostly done on small scale (80% ?…”
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