Resultados de búsqueda - "systematics"

Understanding human-fire interactions in tropical forest regions: a case for interdisciplinary research across the natural and social sciences por Carmenta, R., Parry, L., Blackburn, A., Vermeulen, Sonja J., Barlow, J.

“…Causes of tropical fires are widely documented, although research contributions are from many disciplines, and each tends to focus on specific facets of a research problem, which might limit understanding of fire as a complex social-ecological system. We conducted a systematic review to (1) examine geographic and methodological focus in tropical fire research; (2) identify which types of landholders are the focus of the research effort; (3) test for a research method effect on the variables, e.g., socio-political, economic, and climatic, identified as causes of and proposed management solutions to tropical fire; and (4) examine relationships between causal factors and proposed solutions. …”
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The accumulation and compartmentalization of isometamidium chloride in Trypanosoma congolense, monitored by its intrinsic fluorescence por Wilkes, J.M., Peregrine, A.S., Zilberstein, D.

“…The characteristic shifts involved a preferential increase in the intensity of one emission peak over the over, resulting in a systematic increase in the ratio of fluorescence intensities. …”
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Livestock related nutrient budgets within village territories in western Niger por Schlecht, Eva, Hiernaux, Pierre H.Y., Achard, F., Turner, M.D.

“…This mostly leads to a gradual decline in crop yields per hectare, which can be counterbalanced by the systematic use of livestock manure on cropland. To assess the potential and limits of manuring practices, annual nutrient budgets were established for different land-use types, based on forage and crop yields and livestock and cropland management in five village territories in western Niger, which were selected along the Sahelian climatic gradient. …”
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Assessment of sheep production system in Burie District, north western Ethiopia por Abebe, Yenenesh, Melaku, S., Tegegne, Azage, Tegegne, F.

“…The farmers interviewed in the informal survey were selected purposively and for the formal survey, by systematic random sampling method. Farmers rear sheep for two main purposes, for cash income and home slaughter on festivals. …”
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Increasing access to agricultural extension and advisory services: How effective are new approaches in reaching women farmers in rural areas? por Mbo'o-Tchouawou, Michelle, Colverson, Kathleen E.

“…A wide range of traditional and reformed EAS delivery systems have been tried in many developing countries, but very little has been achieved in systematically considering a gender perspective in the provision of agricultural advisory services. …”
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Dietary diversity and nutrition status of preschool children from banana dependent households in Gitega (Burundi) and Butembo (Democratic Republic of Congo) por Ekesa, B., Garming, H., Blomme, Guy

“…Through multi-stage random sampling commune/collectivity, colline/localite and villages were selected from each of the health zones; household listing was done in each of the sub-sites and systematic random sampling used to select 281 households with pre-school children (Butembo- 138 and Gitega- 143). …”
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Operationalizing inclusive innovation: Lessons from innovation platforms in livestock value chains in India and Mozambique por Swaans, Cornelis P.M., Boogaard, Birgit K., Bendapudi, R., Taye, H., Hendrickx, Saskia C.J., Klerkx, Laurens

“…Critical to this is a flexible planning process stimulating incremental change through so-called innovation bundles (i.e. combinations of technological, organizational, and institutional innovations) and reflexive learning (systematically challenging constraining factors). Furthermore, local institutions embedded in norms and values are crucial to understand people's decisions. …”
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The costs of uncoordinated infrastructure management in multi-reservoir river basins por Jeuland, M., Baker, J., Bartlett, R., Lacombe, Guillaume

“…Similar analyses would be useful for developing a systematic understanding of the factors that increase the costs of non-cooperation in river basin systems worldwide, and would likely help to improve targeting of efforts to stimulate complicated negotiations over water resources.…”
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Factors influencing reproductive performance in a range of network situations por Thorpe, W.R., Coulibaly, L., Defly, A., D'Ieteren, G.D.M., Feron, A., Grundler, G., Hecker, P., Itty, P., Maehl, J.H.H., Mawuena, K., Morkramer, G., Mulungo, M., Nagda, S.M., Paling, R.W., Pelo, M., Rarieya, J.M., Schuetterle, A., Trail, J.C.M.

“…Apart from the effect of year-season of parturition in Boundial, other systematic environmental effects were not significant sources of variation affecting lambing interval. …”
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An equivalent soil mass procedure for monitoring soil organic carbon in multiple soil layers por Wendt, J., Hauser, S.

“…However, this method systematically overestimates OC stocks in treatments with greater bulk densities such as minimum tillage, exaggerating their benefits. …”
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Soil and land health survey to characterize two-100 km2 sites using the Land Degradation Surveillance Framework (LDSF) within Babati district, Tanzania por Winowiecki, Leigh Ann

“…The Land Degradation Surveillance Framework (LDSF) was employed to conduct a systematic biophysical baseline of key land and soil health metrics, which was to be combined with agronomic survey data collected as part of the wider project. …”
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Implications of seed policies for on-farm agro-biodiversity in Ethiopia and Uganda por Otieno, G.A., Reynolds, Travis W., Karasapan, A., López Noriega, Isabel

“…To evaluate how policies in East Africa impact seed systems we systematically code 117 provisions in 21 national seed policies in Ethiopia (n=11) and Uganda (n=10), highlighting the implications of current and proposed policies for the availability and accessibility of: (i) improved seed; (ii) quality-controlled seed; and (iii) genetically diverse local seed in both the formal and informal seed systems in each country.…”
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In situ conservation—harnessing natural and human-derived evolutionary forces to ensure future crop adaptation por Bellon, M.R., Dulloo, Mohammad Ehsan, Sardos, J., Thormann, I., Burdon, J.J.

“…However, the evidence that underpins this key rationale remains fragmented and has not been examined systematically, thereby decreasing the perceived value and support for in situ conservation for agriculture and food systems and limiting the conservation options available. …”
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Farmers’ own assessment of climate smart agriculture: Insights from Ma village in Vietnam por Vernooy, Ronnie, Le Kai Hoan, Tuan Cuong, Bui, Le Vinh

“…Although scientists have developed a coherent analytical CSA framework that guides the field research, so far they have struggled to practically track and measure outcome results in a systematic way. This report documents and reflects on how woman and man farmers in Ma village are assessing the biophysical results of the climate-smart techniques and practices they have adopted. …”
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Assessing the chemical and microbiological quality of farmed tilapia in Egyptian fresh fish markets por Eltholth, Mahmoud, Fornace, Kimberly, Grace, Delia, Rushton, Jonathan, Häsler, Barbara

“…The aim of this study was to assess the chemical and microbiological quality of farmed tilapia in Egypt. We conducted a systematic literature review resulting in 38 papers meeting inclusion criteria. …”
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State and evolution of the African rainforests between 1990 and 2010 por Mayaux, P, Pekel, J.F., Desclee, B, Donnay, F, Lupi, A, Achard, F., Clerici, M, Bodart, C, Brink, A, Nasi, Robert, Belward, A.

“…The map is accompanied by measurements of deforestation between 1990, 2000 and 2010 for West Africa, Central Africa and Madagascar derived from a systematic sample of Landsat images—imagery from equivalent platforms is used to fill gaps in the Landsat record. …”
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Integrated landscape approaches to managing social and environmental issues in the tropics: learning from the past to guide the future por Reed, J.D., Vianen, J. van, Deakin, E.L., Barlow, J., Sunderland, Terry C.H.

“…Focusing on the tropics, we systematically reviewed the literature to: (i) disentangle the historical development and theory behind the framework of the landscape approach and how it has progressed into its current iteration, (ii) establish lessons learned from previous land management strategies, (iii) determine the barriers that currently restrict implementation of the landscape approach and (iv) provide recommendations for how the landscape approach can contribute towards the fulfilment of the goals of international policy processes. …”
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Ixodes schulzei Aragão & Fonseca, 1951 in Argentina por Lamattina, Daniela, Venzal, José Manuel, Guglielmone, Alberto Alejandro, Nava, Santiago

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Phylogenetic position and virulence apparatus of the pear flower necrosis pathogen Ervvinia piriflorinigrans CFBP 5888(T) as assessed by comparative genomics por Smits, Theo H. M., Rezzonico, Fabio, López, María M., Blom, Jochen, Goesmann, Alexander, Frey, Juerg E., Duffy, Brion

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Advances in validating SALTIRSOIL at plot scale: First results por Visconti, Fernando, De-Paz, José M., Molina, María J., Sanchez, Juan

“…According to the closeness of the first comparisons between predictions and measurements, SALTIRSOIL does not seem to be affected by any systematic error, and as a consequence, neither inclusion of new parameters nor calibration of the others already included would be needed at least for surface irrigation. …”
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