Dataverse World Agroforestry (ICRAF)
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Somaliland Tools for Data Collection
No full textTools for data collection for household farm and nutrition and consumption dat
Replication Data for Proximity to the host is an important characteristic for selection of the first support in lianas
No full textLianas depend on support to reach optimal growing conditions. They can infest trees unevenly, and host selection may depend on functional characteristics of the potential hosts, such as growth rate, bark type or tree architecture. In this context we hypothesized that (1) simple proximity to the rooting point of the liana is the overriding property predicting the probability of selection as the host; (2) the distance to the host decreases with increasing stem density in the surrounding community; (3) host distance becomes more variable with liana age (~diameter), as some larger lianas probably have already lost their first host, whereas small lianas should use the nearest available stem to climb; and (iv) liana infestation of plant families is proportional to family abundance
Vision for Change Project (V4C)
No full textMars Incorporated, in partnership with the World Agroforestry Centre (ICRAF) and national partners, will increase the production of cocoa for smallholder farmers in Cote dÂIvoire. Through the Vision for Change: Sustainable Cocoa Communities project between ICRAF and the chocolate company Mars Inc.
The Vision for Change partnership of Mars Inc., ICRAF, CNRA, Agence Nationale d'Appui au Developpement Rural (ANADER) works to improve the livelihoods of farmers through research on developing improved cocoa varieties, securing markets for agroforestry products and quantifying the potential for trees on farms for climate change mitigation and adaptation. ÃÂThe Vision for Change project being brought to life in Cote d'Ivoire by ICRAF is a long-term collaboration with nationa
l institutions, industry peers and others that will apply research and technology transfer to increase yields for cocoa farmers
Population Genetic Studies using SNP Markers Reveal Genetic Affinities, Population Fragmentation, Genetic Erosion, and Dispersion Pathway of African Baobab (Adansonia digitata)
No full textThe African baobab (Adansonia digitata) is an iconic tree found all over sub-Saharan Africa. It is an important agroforestry tree because of its livelihood, nutritional, and agroecological benefits, which largely remain neglected, scientifically orphaned, uncultivated, and undomesticated. This study was conducted to understand the extent, distribution, and quality of baobab genetic diversity in three major geographical zones in Africa: the west (Mali, 93 samples), the south (Zambia, 56 samples), and the east (Tanzania-Zanzibar and Kenya, 171 samples)
Restoration of degraded land for food security and poverty reduction in East Africa and the Sahel: taking successes in land restoration to scale
No full textThis document provides background information on the IFAD-funded project titled, "Restoration of degraded land for food security and poverty reduction in East Africa and the Sahel: taking successes in land restoration to scale"
Replication Data for: Smallholder farmers’ perceptions of climate change and the roles of trees and agroforestry in climate risk adaptation: evidence from Bohol, Philippines
No full textRecent studies have highlighted the importance of trees and agroforestry in climate change adaptation and mitigation. This paper analyzes how farmers, members of their households, and community leaders in the Wahig–Inabanga watershed, Bohol province in the Philippines perceive of climate change, and define and value the roles of trees in coping with climate risks. Focus group discussions revealed that farmers and community leaders had observed changes in rainfall and temperature over the years. They also had positive perceptions of tree roles in coping with climate change, with most timber tree species valued for regulating functions, while non-timber trees were valued as sources of food and income. Statistical analysis of the household survey results was done through linear probability models for both determinants of farmers' perceived changes in climate, and perceived importance of tree roles in coping with climate risks. Perceiving of changes in rainfall was more likely among farmers who had access to electricity, had access to water for irrigation, and derived climate information from government agencies and mass media, and less likely among farmers who were members of farmers' organizations. On the other hand, perceiving of an increase in temperature was more likely among farmers who were members of women's organizations and had more off/non-farm sources of income, and less likely among those who derived climate information from government agencies. Meanwhile, marginal effects of the regression on perceived importance of trees in coping with climate change revealed positively significant relationships with the following predictor variables: access to electricity, number of off/non-farm sources of income, having trees planted by household members, observed increase in temperature and decline in yield, and sourcing climate information from government agencies. In contrast, a negatively significant relationship was observed between recognition of the importance of tree roles, and level of education, and deriving income from tree products. In promoting tree-based adaptation, we recommend improving access to necessary inputs and resources, exploring the potentials of farmer-to-farmer extension, using participatory approaches to generate farmer-led solutions based on their experiences of climate change, and initiating government-led extension to farmers backed by non-government partners
Replication Data for: Soil respiration in sloping rubber plantations and tropical natural forests in Xishuangbanna, China
No full textSoil respiration (SR) plays an important role in the global carbon cycle. The widespread and continued conversion of tropical forests to plantations is expected to drastically alter CO2 production in soil, with significant consequences for atmospheric concentrations of this crucial greenhouse gas. In Southeast Asia, rubber plantations
are among the most widespread monoculture tree plantations. However, knowledge of how SR differs in rubber plantations compared to natural forests is scarce. In this study, surface CO2 fluxes and soil CO2 concentrations (at 5 cm, 10 cm, 30 cm and 70 cm depths) were measured at regular intervals over a one-year period along slopes at three sites in paired natural tropical forests and mature rubber plantations. Annual surface soil CO2 fluxes were 15% lower in the rubber plantations than in natural forest. This difference was due to substantially lower SR during the dry season in rubber plantations compared to natural forest. During the wet season, SR did not differ significantly between rubber plantations and natural forests. In rubber plantations, soil moisture increased from lower and middle to upper slope positions, but this did not significantly impact SR. Throughout the year, net CO2 production per unit volume in the topsoil (2.5–7.5 cm) exceeded by 2–3 orders of magnitude net CO2 production in the subsoil (7.5–50 cm). However, CO2 originating from 5 cm depth and below in both land cover types could only explain up to 30% of the aboveground measured CO2 flux, indicating that>70% of the total CO2 respired and emitted to the atmosphere originated from the uppermost few cm of the soil. Net CO2 production at different soil depths did not differ significantly between rubber plantations and natural forests. Our results indicate that SR characteristics in mature rubber plantation and natural forest were broadly similar, although dry season soil surface CO2 fluxes were lower in rubber plantations. However, further information on the drivers of CO2 production in the uppermost topsoil layers which are responsible for most CO2
emissions is needed to understand the extent to which these results are generalisable
