A5016327234- Conservation, Biodiversity, and Resource Management
- Polysaccharides and Plant Cell Walls
- Plant Pathogens and Fungal Diseases
- Plant Reproductive Biology
- Forest Management and Policy
- Land Use and Ecosystem Services
- Agriculture and Rural Development Research
- Oil Palm Production and Sustainability
- Rangeland Management and Livestock Ecology
- Plant Molecular Biology Research
- Mycorrhizal Fungi and Plant Interactions
- Polysaccharides Composition and Applications
- Global trade, sustainability, and social impact
- French Urban and Social Studies
- Agriculture, Land Use, Rural Development
- Cocoa and Sweet Potato Agronomy
- Botanical Research and Applications
- Plant and fungal interactions
- Energy and Environment Impacts
- Mining and Resource Management
- African Botany and Ecology Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Plant Surface Properties and Treatments
- Agricultural risk and resilience
- Agricultural Innovations and Practices
Wageningen University & Research
2012-2025
World Conservation Monitoring Centre
2016-2023
National Centre for Earth Observation
2023
Plant Production Research Institute
2019-2023
World Agroforestry Centre
2012
Center for International Forestry Research
2007
International Institute of Tropical Agriculture
2007
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2006
WWF Cameroon
2005
Radboud University Nijmegen
1974-1998
Electron microscopic investigation of germinating Petunia pollen has yielded new data concerning fine structure the tube wall and protoplasm. The cell reveals two layers, an inner one containing cellulose microfibrils, embedded in a matrix, outer consisting acid resistant material. multi-net growth theory is applicable to tube. Round generative nucleus, there cytoplasm organelles. This separated from vegetative by wall-like structure. So we ought speak cell. nucleus lobed surrounded nuclear...
SUMMARYSUMMARYThe surface structures of 10 species Penicillium conidia were studied and compared using the freeze-etching technique. The all shown to have an outer layer made up “rodlets” which formed distinctive patterns. patterns by these specific therefore may some taxonomic value. Variation was also noted between spores within possible influence heterokaryosis or parasexual cycle both on this variation in “rodlet” pattern is discussed.
Forests across the world stand at a crossroads where climate and land-use changes are shaping their future. Despite demonstrations of political will global efforts, forest loss, fragmentation, degradation continue unabated. No clear evidence exists to suggest that these initiatives working. A key reason for this apparent ineffectiveness could lie in failure recognize agency all stakeholders involved. Landscapes do not happen. We shape them. Forest transitions social behavioral before they...
Decision-makers aiming to improve food security, livelihoods and resilience are faced with an uncertain future. To develop robust policies they need tools explore the potential effects of climatic, socioeconomic, environmental changes. Methods have been developed use scenarios present alternative futures inform policy. Nevertheless, many these can limit possibility space which decision-makers engage. This paper will a participatory scenario process that maintains large through multiple...
Interest in economically and ecologically sustainable cocoa has grown recent years. Cocoa-based agroforestry systems are promoted as a potential win-win option for long-term yields, multiple benefits, the preservation of biodiversity. Yet, even though studies have shown such agroforests can support biodiversity, their value relative to natural areas open-land is not fully known. We estimated biodiversity intactness (BII) different land uses associated with cocoa-driven land-use change using...
Cocoa is the economic backbone of Côte d’Ivoire and Ghana, making them leading cocoa-producing countries in world. However, cocoa farming has been a major driver deforestation landscape degradation West Africa. Various stakeholders are striving for zero-deforestation sector by implementing sustainable strategies more transparent supply chain. In context tracking sources contributing to cocoa-driven monitoring, demand accurate up-to-date maps plantations increasing. Yet, access limited...
Cortical microtubules (MTs) allegedly orient nascent cellulose microfibrils (CMFs) in plant cells. The frequently observed parallelism between them, and the effect of MT‐depolymerizing agents, are bases for this hypothesis. Data have, however, accumulated about cells which MTs CMFs not parallel alignment. These data will be reviewed. MT orientation cannot only factor determining CMF orientation, but could overrule other factors where, instance, they more tightly attached to plasma membrane...
Cocoa is an important historical driver and direct cause of forest loss degradation in the West African Upper Guinean biodiversity hotspot. To inform efforts to prevent further cocoa-driven deforestation cocoa zone, we mapped areas that are for ecosystem services (carbon, water, products) potentially most at risk from expansion based on climatic suitability, a continuation past trends potential role therein. We found intensification risks impacting ecologically Africa, but patterns vary...
Abstract While international trade in agricultural commodities can spur economic development especially where governance is strong, there are also concerns about the local impacts of commodity production and their distribution on environment people. The sustainable goals (SDGs), though seeing as a means to support achievement, recognise need address potential negative social environmental impacts. It therefore important assess contribution SDGs areas. widely acknowledged, but much less known...
The disappearance of cell walls during the fusion process in plant was studied electron microscopically on following objects. Hordeum vulgare: Differentiation central vessel root. Achras sapota: Origin laticifers shoot apex. Phycomyces blakesleeanus and Hansenula wingei: Zygote formation. In end wall first swells, it is then detached its entirety from lateral wall, after which breakdown completed. Achras, takes place gradually, beginning centre. Enzymes that are close contact with plasma...
SUMMARYThe surface structures of 10 species Penicillium conidia were studied and compared using the freeze-etching technique. The all shown to have an outer layer made up "rodlets" which formed distinctive patterns. patterns by these specific therefore may some taxonomic value. Variation was also noted between spores within possible influence heterokaryosis or parasexual cycle both on this variation in "rodlet" pattern is discussed.