Resultados de búsqueda - "empirical evidence"

Socio‐ecological drivers of vertebrate biodiversity and human‐animal interfaces across an urban landscape por Hassell, James M., Bettridge, Judy M., Ward, Melissa J., Ogendo, Allan, Imboma, Titus, Muloi, Dishon M., Fava, Francesco P., Robinson, Timothy P., Begon, Michael, Fèvre, Eric M.

“…A wealth of studies have assessed biotic responses to urbanization in North America and Europe, but there is little empirical evidence that directly links human activities to urban biodiversity in the tropics. …”
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Impact of climatic, demographic and disease control factors on the transmission dynamics of COVID-19 in large cities worldwide por Metelmann, S., Pattni, K., Brierley, L., Cavalerie, Lisa, Caminade, C., Blagrove, M.S.C., Turner, J., Sharkey, K.J., Baylis, M.

“…Here, we look for empirical evidence of seasonality using a robust estimation framework. …”
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Powerful actors and their networks in land use contestation for oil palm and industrial tree plantations in Riau por Juniyanti, L., Purnomo, H., Kartodihardjo, H., Prasetyo, L.B., Suryadi, Pambudi, E.

“…Accordingly, this paper presents empirical evidence to understand the important role of powerful actors in land-use contestation in oil palm and industrial plantation forests. …”
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Food security outcomes in agricultural systems models: Current status and recommended improvements por Nicholson, Charles F., Stephens Emma C., Kopainsky, Birgit, Jones, Andrew D., Parsons, David, Garrett, James

“…Given that food security comprises availability, access, utilization and stability dimensions, improved practice would involve more effort to incorporate food access and stability indicators into agricultural systems models. The empirical evidence base for including food access indicators and their determinants within agricultural systems models requires further development through appropriate short and long-term investments in data collection and analysis. …”
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Streamflow variability and its linkage to ENSO events in the Ethiopian Rift Valley Lakes Basin por Worako, A. W., Haile, Alemseged Tamiru, Taye, Meron Teferi

“…The relation between ENSO indicators (SOI, MEI and Niño3.4) and streamflow magnitude was statistically evaluated with partial correlation, cross correlation, extreme streamflow indices and streamflow deficits to provide empirical evidence on how ENSO phases (La Niña and El Niño) affect streamflow variability. …”
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Entry Points to Improve Livestock Water Productivity in Selected Forage Based Livestock Systems por Haileslassie, Amare, Descheemaeker, Katrien K., Blümmel, Michael, Craufurd, Peter Q., Ergano, Kebebe

“…Although these systems vary by their degree of intensification, scale of water related problems, and therefore in their values of LWP, a number of common entry points to increase LWP can be identified. Based on empirical evidence from these systems, we systematically clustered these entry points as: (1) improving the water productivity of feed; (2) improving livestock feed sourcing and feeding; (3) enhancing livestock feed use efficiencies; and (4) enabling institutions and market linkages to facilitate adoption of relevant technologies. …”
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Gendered evaluation of impacts of landscape degradation and restoration on ecosystem services: perspectives from paired husbands and wives in Ethiopia por Mponela, Powell, Aynekulu, Ermias, Ebrahim, Mohammed, Abate, Tsion, Abera, Wuletawu, Elias, Marlène, Tamene, Lulseged D.

“…Globally, land degradation disproportionally affects women more than men and, to close the gender gap, several landscape restoration projects promote gender inclusiveness. However, empirical evidence based on gender-disaggregated data is a major research gap. …”
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Revisiting poverty trends and the role of social protection systems in Africa during the COVID-19 pandemic: Working Paper por Abay, Kibrom A., Yonzan, Nishant, Kurdi, Sikandra, Tafere, Kibrom

“…Furthermore, the paper assesses and synthesizes empirical evidence on the role that social protection systems played in mitigating the adverse impact of the COVID-19 crisis in Africa. …”
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Revisiting poverty trends and the role of social protection systems in Africa during the COVID-19 pandemic por Abay, Kibrom A., Yonzan, Nishant, Kurdi, Sikandra, Tafere, Kibrom

“…Furthermore, we assess and synthesize empirical evidence on the role that social protection systems played in mitigating the adverse impact of the COVID-19 crisis in Africa. …”
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Farmers' willingness to invest in mechanized maize shelling and potential financial benefits: evidence from Tanzania por Kotu, Bekele Hundie, Manda, J., Mutungi, C., Fischer, G., Gaspar, A.

“…However, the situation has changed since recently in favor of mechanization while limited empirical evidence is available on how mechanization can be enhanced among smallholder farmers. …”
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Consumer demand for milk and the informal dairy sector amidst COVID-19 in Nairobi, Kenya por Alonso, Silvia, Angel, Moira Donahue, Muunda, Emmanuel, Kilonzi, Emily, Palloni, Giordano, Grace, Delia, Leroy, Jef L.

“…Pandemic-related changes in behavior and government restrictions in Kenya may have negatively affected food supply chains and household food access, but the empirical evidence is currently limited. Objective The study explored changes in informal milk markets, dairy consumption, and food insecurity among low-income households in urban and peri-urban Nairobi, Kenya, following the start of the COVID-19 pandemic in the country. …”
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Digital tools and agricultural market transformation in Africa: Why are they not at scale yet, and what will it take to get there? por Abate, Gashaw T., Abay, Kibrom A., Chamberlin, Jordan, Kassim, Yumna, Spielman, David J., Tabe-Ojong, Martin Paul

“…This paper reviews the conceptual and empirical evidence on the transformative potential of digital innovations for African agricultural markets with an in-depth examination of solutions that have been rolled out to date in the continent. …”
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Organic soil amendments and food security: Evidence from Cameroon por Tabe-Ojong, Martin Paul Jr., Fabinin, Akem Nina, Nzie, Jules Rene Minkoua, Molua, Ernest Lytia, Fonkeng, Eltson Eteckji

“…We also find the use of organic soil amendments to be associated with reduced levels of mild, moderate, and severe food insecurity. Empirical evidence is also suggestive of a positive association between crop diversification and food security. …”
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The impact of participatory action research and endogenous integrated soil fertility management on farm-gate dietary outputs in Northern Tanzania por Mponela, Powell, Manda, Julius, Kinyua, Michael Wanjohi, Maguta, Job Kihara

“…In most developing countries, although agricultural extension and research devolved since 1980s to promote relevance, cost-effectiveness, ownership, and sustainability, participatory action research (PAR) have been run, albeit with limited empirical evidence on their impacts on farmers livelihoods. …”
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Youth engagement in livestock production and marketing in East Africa por Bullock, Renee, Auma, Joseph, Baltenweck, Isabelle, Dione, Michel M., Okeyo Mwai, Ally, Ndiwa, Nicholas N., Omore, Amos O., Ouma, Emily A., Yami, M.

“…There is limited empirical evidence about how youth engage in livestock production in East Africa. …”
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Advancing an intersectional lens into gender transformative work in agri-food systems por López, Diana E., Gualoto, Ekaterina, Pyburn, Rhiannon

“…The limited use of an intersectional approach in current GT work translates into a lack of empirical evidence while it reveals the necessity for further exploration and implementation, stressing the need for better evidence to understand the effectiveness of GT approaches and their outcomes in achieving gender equality. …”
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Impact of gender targeting in ICT hubs: Cluster randomized controlled trial in Malawi por Ragasa, Catherine

“…This study will provide rigorous empirical evidence on the causal impact of digital extension, combined with group-based approaches and gender targeting.…”
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Designing gender-transformative interventions in the commercialized cassava seed system in Tanzania por Liani, Millicent L., Cole, Steven M., Hillenbrand, Emily, Mtunda, Kiddo, Egesi, Chiedozie, Tufan, Hale Ann

“…For gender-transformative (GT) interventions in seed systems to succeed, there is urgent need to test new models which should be guided by empirical evidence. We present findings from research that unraveled the underlying causes that prevent women and youth from actively participating and benefiting as cassava seed entrepreneurs (CSEs). …”
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Exclusion in community water governance in Bangladesh: An overlooked social issue por Sharma, Indu K., Garrett, James, Joshi, Deepa

“…Bangladesh’s water management shifted toward a decentralized system in the 1990s, with more power to community, including the water management groups (WMGs). Empirical evidence, however, suggests unequal access to water among women and marginalized populations. …”
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From seeds of change to harvesting equality: Women in India’s agro-ecology based agri-food systems por Singh, Sonali

“…Through a comprehensive review of agriculture policy documents, case studies and empirical evidence, this study seeks to uncover the gaps and challenges in achieving gender-responsive policy and institutional frameworks within the agro-ecological context. …”
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