Dataverse World Agroforestry (ICRAF)
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Replication data for: Generic lures attract cerambycid beetles in a tropical montane rain forest in southern China
No full textThe attraction of cerambycid beetles to 10 known cerambycid pheromones was tested in a tropical montane rain forest in southern China. From 28 May to 25 June 2010, 1,526 cerambycids representing 71 species were captured in pheromone-baited traps, with 14 species accounting for 92% of the specimens. Test compounds with a 3-hydroxyalkan-2-one or 2,3-alkanediol motif attracted significant numbers of both sexes for eight species in the subfamily Cerambycinae, including species of Demonax, Rhaphuma, and Xylotrechus. Rhaphuma horsfieldi (White) was the only species that was strongly attracted to more than one test compound, with significant attraction to both (2R*,3R*)- 2,3-hexanediol and (2R*,3R*)-2,3-octanediol. Within the Lamiinae, males and females of species were significantly attracted to 2-(undecyloxy)ethanol, including Acalolepta formosana (Breuning), Monochamus bimaculatus Gahan, Pharsalia subgemmata (Thomson), Pseudomacrochenus antennatus (Gahan), and Xenohammus bimaculatus Schwarzer. Only male Megopis costipennis White (Prioninae) were significantly attracted to (2R*,3S*)-2,3-octanediol, suggesting that this compound may be a sex pheromone component for this species. To date, 2,3-octanediols have only been reported as aggregatio
n pheromone components for cerambycids in the subfamily Cerambycinae. Our results support the hypothesis that both closely related (congeners) and more distantly related cerambycid species (different tribes and even subfamilies) may share pheromone components. Our results also demonstrate that traps baited with even a limited number of different classes of pheromones may be useful tools for surveying cerambycid diversity, as well as for detecting and monitoring particular species, especially those that have the potential to be invasive pests in other parts of the world
Replication data for: Ensemble forecast of climate suitability for the Trans-Himalayan Nyctaginaceae species
No full textWe forecast climate space of two species found in different environmental condition using ensemble modelling approach. Variance inflation factor method used for variable selection was successful in ecological niche modelling. Ensemble of different modelling algorithms delimits the climate space of the focal organisms. Surrogate of arid climate is determinant for suitable habitat of the focal organism. Dry valleys likely to provide route of dispersal of plant species occurring in the trans-Himalayan regions
End of Project Evaluation for Community Agroforestry Tree Seed bank project in Malawi
No full textThe Community Agroforestry Tree Seed Banks project was implemented between 2009 and 2012 in Malawi and Mozambique. It was implemented by ICRAF SA in partnership with National Smallholders Farmers Association of Malawi (NASFAM), Land Resources Conservation Department (LRCD), and Total Land Care (TLC), Catholic Development Commission (CADECOM), Forestry Research Institute of Malawi (FRIM) in Malawi; and Department of Agriculture and Economic Activities (SDAE) and Mozambique Leaf in Mozambique.The main purpose of the project was to develop innovative partnerships within the agroforestry seed value chains.the project targeted 8000 farmers Mzimba South, Kasungu north in Malawi and Tsangano and Angonia in Mozambique
Household Demographic and Production Data of Camu-Camu Producers Collected in Ucayali, Peru, October, 2014
No full textSurvey data of demographic, production, and market perspectives of fifty-three camu-camu producers in the Ucalyali Region of Peru collected for a value chain analysis
Perantau Dan Pengelola Kebun Sebuah Kajian Migrasi Di Kabupaten Ciamis, Jawa Barat.
No full textMigration as people strategy to improve their livelihood in the case they have only limited livelihood source. In agrarian community, migrant usually still own timber based system as one of alternative livelihood. When they migrate, there will be division of work, who will have more responsibility on managing their land. This study try to explore how the migrant and smallholder manage their land when they decide to migrate and all the implication on gender roles and responsible in each household
Importance of National Policy and Local Interpretation in Designing Payment for Forest Environmental Services Scheme for the Ta Leng River Basin in Northeast Vietnam
No full textThe Leng River basin in BacKan province, northwest Vietnam hosts critical natural resources where lessons learnt from the pilot project of payment for forest environmental services (PFES) in Lam Dong and Son La provinces can be applied. PFES is broadly defined as an economic instrument that facilitates payments of forest environmental service flows to forest dwellers. The passage of a national PFES Decree in Vietnam where the K-factor framework was used to determine the payment level of environmental services created both pportunities and challenges in the design and implementation of PFES schemes.This paper presents how the national PFES policy was adapted, and how lessons in the pilot provinces were considered in developing a local PFES scheme. Important considerations and criteria for determining K-factors to standardize payments forsimilar environmental services, as well as the proposed PFES scheme for the Leng River Basin are discussed. The paper concludes that national policy framework and local interpretation of K-factors are crucially important in designing a PFES scheme that meets the realistic and pro-poor elements of PES. Finally, a PFES scheme must have detailed implementing guidelines that are eveloped with local stakeholders
Replication data for: Assessing the Quality of Seedlings in Small-scale Nurseries in the Highlands of Cameroon: The Use of Growth Characteristics and Quality Thresholds as Indicators
No full textIn developing countries seedlings are often produced in small-scale nurseries as a means to raise tree planting materials and, provided they are of high quality, these can form the basis for successful forest plantation initiatives. This study uses morphological characteristics to assess the quality of seedlings of three tree species (Persea americana, Cola acuminata and Dacryodes edulis) in the Western Highlands of Cameroon. The growth characteristics and quality indicators of seedlings produced in two nursery categories were comparedâthree nurs
eries collaborating with the tree domestication program implemented by the World Agroforestry Centre (Category 1) and three nurseries collaborating with government and non-governmental projects (Category 2). Seedlings produced in nurseries in the first nursery category were found to be uniform in terms of growth characteristics and quality indicators. In the second category, there were relatively higher seedling proportions having measured parameters out of threshold standards for root to shoot ratio and for sturdiness quotient. Significant differences between nursery categories (at a = 0.05) were detected in root collar diameter of C. acuminata and D. edulis and in shoot dry weight of D. edulis. These differences could be attributed to better nursery management as a results of training and technical backstopping received by nursery operators in Category 1. The level of experience of nursery operators in both categories was found to be insufficient and greater exposure to skills and knowledge could enhance the production of high quality seedlings
Africa RISING Project: Sustainable tree-crop-livestock intensification as a pillar for the Ethiopian climate resilient green economy initiative
No full textIn 2012, Africa RISING funded an ‘early win’ project in Ethiopia led by the World Agroforestry Centre (ICRAF). The project aims to underpin the Ethiopian Climate Resilient Green Economy Initiative by providing early win tree species and management options for integrating fruit, fodder, fuelwood, fertilizer and timber trees in fields, farms and landscapes. This will enable sustainable intensification of
farm systems by expanding the scope of options promoted by the initiative, and by targeting species and management options appropriately to sites and farmer circumstances. In the process, we will build a durable partnership amongst national and international institutions that will be well-placed to further refine the options available and their targeting. A novel aspect is bringing together tree, crop and livestock expertise to address the whole farm and landscape context. This is critical for the success of integrating trees in fields where they may compete as well complement crops, and where the management of livestock grazing is fundamental to the success of tree establishment. The outputs include: 1. Local knowledge about integration of trees in fields, farms and landscapes documented. 2. Best bet tree species and management options identified. 3. Needs for development of the tree seed and seedling supply sector assessed. 4. Effective partnerships for promoting tree-crop-livestock integration to underpin the climate resilient green economy initiative established
Replication data for: Does collective action improve the performance of actors in the njansang (Ricinodendron heudelotii) value chain? Insights from Cameroonâs experience
No full textOver the past decade the potential of under-utilized food products to contribute to rural livelihoods has been recognised by development practitioners, researchers, donors and civil societies. In view of this, value chain development (VCD) of these products and its importance for rural development is increasingly becoming an important topic for discussion. In Cameroon, development and research organizations have promoted the commercialization of Ricinodendron heudelotii (Baill.) Pierre ex Pax., locally known as Njansang which is under-utilized species found in West and Central Africa. The aim of these initiatives is to alleviate poverty through activities like traini
ng on production, processing and collective marketing. After 10 years, it is imperative to know how collective action interventions have influenced the development of the value chain. This study therefore assesses the effects of collective action on producersâ livelihoods and the business performance of traders involved in the njansang value chain. The â5 capitalsâ framework, which is a tool for assessing the poverty impacts of value chain interventions, was employed. Sixteen focus group discussions were held with producers and traders involved in the njansang value chain in the West, Centre and East regions of Cameroon. A survey using structured questionnaires was also administered with 169 producers and 15 traders on their perception of the impacts of collective action interventions. The results indicate that farmers have benefitted from collective action through improved processing techniques, increased income resulting from economies of scale, as well as social benefits. Traders have gained through bulk buying from producers, reducing their transaction costs and improved consistency in supply. It is concluded that, among others, collective action can be an important entry point for the promotion of under-utilized species. However, it needs to be complemented with other interventions such as financial support which can help farmers to reduce side selling outside the group
Replication data for: Early decapitation on African plum control-pollinated seedlings and consequences on subsequent growth in Cameroon
No full textA decapitation test was used to assess control-pollinated seedlingsâ growth in Dacryodes edulis. Thirty nine weeks after sowing, pot-grown seedlings belonging to 13 control-pollinated progenies from 4 provenances were decapitated by removal the shoot apex or the uppermost node, leaving shoots of uniform height of 40 cm. The stem size (height and diameter) were measured and the number of leaves counted weekly for a period of 39 weeks after sowing (WAS) in the nursery. Then the length and number of lateral shoots (twigs) subsequently formed were measured during a period of 2 to 8 weeks after decapitation (WAD) in a net house to determine the branching frequency. Previous to decapitation seedling height did not show significant variation (P>0.05) in all crosses combined 39 WAS