LandVoc Community of Experts | Land Portal

LandVoc Community of Experts



LandVoc is a collaborative effort. On a voluntary basis, more than a dozen experts in the land sector are involved in the development of the Linked Land Governance Thesaurus. While the editing of LandVoc is carried out by the LandPortal team, the knowledge held by the LandVoc Community of Experts is invaluable, particularly in terms of providing technical guidance. More specifically, the experts contribute by:


  • Suggesting new concepts and translations;
  • Suggesting new or improved definitions for concepts;
  • Suggesting alignments to other concept schemes; 
  • Providing expert advice on land governance concepts where needed; 
  • Help to standardize the classification of content on land-related information; 
  • Support in the promotion, uptake and use of LandVoc, including advising on outreach activities and tools.  


The Community of Experts exchanges on a regular basis. If you feel that you can contribute with your specific expertise, please contact


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  • Experts

Prof. Dr. Chrit Lemmen
Science and Earth Observationeveloped Land Administration Domain Model

Chrit Lemmen

Christiaan Lemmen is full Professor at ITC, the Faculty of Geo-information Science and Earth Observation, University of Twente, the Netherlands (part-time, 1 day per week). Christiaan is a Geodetic Advisor with Kadaster International, the international branch of the Netherlands Cadastre, Land Registry and Mapping Agency. His expertise concerns land administration, fit-for-purpose land administration, land registration, cadastre, land consolidation, institutional and organisational development, strategy development, (initial-) data acquisition for land administration, quality management, data and proces modelling, ICT aspects and evaluation and monitoring. He is co-editor of the Land Administration Domain Model and designer of the Social Tenure Domain Model.
LandVoc Involvement Aspect: Updates to concepts




Eileen Wakesho
Women’s Land Rights Advisor at Oxfam International

Eileen focuses on work that draws on regional, national work and grassroots women’s experiences and leads to greater attention to securing women’s land and property rights in all relevant policy arenas globally. She supports the design and execution of research to inform advocacy interventions. Eileen helped coordinate the Civil Society Platform on land in Africa; a platform to facilitate effective input from grassroots organizations, social movements, and a wide range of Civil Society Organizations (CSOs) to position the land agenda within the wider African Union.
LandVoc Involvement Aspect: Updates to concepts



Patricia Chaves
Espaço Feminista and member of the Feminist Land Platform

Patricia Chaves, Espaco Feminista, Brazil

Patricia Chaves is focused on the linkages between agrarian reform, food security and women’s land rights. With a strong background in business administration and post-graduated in Business Studies at the London School of Economics and Political Science (LSE) London, her work is dedicated to the empowerment of rural and urban women. Patricia worked for 7 years as a consultant for The United Nations Development Program - UNDP, Inter American Institute for Agricultural Cooperation - IICA, and as an IFAD project director. She worked for 6 years as a consultant to the Minister of Agrarian Development of Brazil and during that period had the opportunity to understand the struggle of land movements in Brazil.
LandVoc Involvement Aspect: Updates to concepts




Rick de Satgé
Senior Research Associate, Phuhlisani NPC​

Dr. Rick de Satgé, Phuhlisani NPC

Rick has over 40 years of experience in the land sector working in South Africa, Zimbabwe and Botswana. He is a former Director of Research and Collaborative Learning with Phuhlisani NPC, a leading South African land NGO, to which he remains affiliated as a Senior Research Associate. He currently curates is external)  providing news and research links on land issues. He holds a PhD from the University of Cape Town. 
LandVoc Involvement Aspects: Updates to concepts, Supporting promotion and uptake​





Amanda Martínez Elvir
Universidade Federal de Pernambuco

Amanda Martinez (Local Content Associate)

Amanda is a PhD Candidate in Urban Development at the Federal University of Pernambuco, Brazil. Her areas of research are based on urban socio-spatial segregation, gender and urban planning, land rights and decolonial studies related to space production in Latin America. 
LandVoc Involvement Aspect: Updates to concepts





K'odieny Hillary Ogina
Program Officer, Kenya Land Alliance

Hillary Ogina

Hillary is a Land and Natural resources a policy advocacy expert with a bias on community land rights for marginalized communities.
LandVoc Involvement Aspects: Translations, Updates to concepts, Supporting promotion and uptake​




Sara Jani
Project Monitoring and Knowledge Management Coordinator, MEL/ICARDA

Sara Jani

Sara Jani is the Project Monitoring and Knowledge Management Coordinator of the Monitoring, Evaluation and Learning platform (MEL). She started her work with MEL in 2016. She provides support and training to ICARDA to increase capacity and manages ICARDA knowledge products uploaded to the MEL Platform to ensure maximum compliance with FAIR principles. In addition, she works on updating MEL’s online user guide. Recently, she is involved in recording ICARDA projects and managing the contribution of ICARDA to the FAO-managed AGROVOC repository.
LandVoc Involvement Aspects: Translations




Erik Stubkjær
Professor emeritus Aalborg University, Aalborg, Denmark

Erik Stubkjær

Professor emeritus Erik Stubkjær is co-author of the Cadastre and Land Administration Thesaurus (CaLAThe), issued 2011 and now referenced by The Basel Register of Thesauri, Ontologies & Classifications (BARTOC), The OGC Definitions Server, and the Linked Land Governance Thesaurus (LandVoc). 
Erik is engaged in standardization activities, contributing to the Land parts of OGC standards LandInfra and InfraGML (2016/17), and striving to align standards within the domain of land administration, including the ISO 19152:2012 Land Administration Domain Model (LADM). He has published more than 100 papers, developed lecture courses and initiated the research project ‘Modelling Real Property Transactions,’ supported by European Science Foundation as COST action G9. He holds a Lic.agro. (Ph.D.).
LandVoc Involvement Aspects:  Updates to concepts




Caterina Caracciolo
FAO (Food and Agriculture Organization, UN)

Caterina Caracciolo

Caterina Caracciolo is senior information specialist at the Food and Agriculture Organization of the United Nations (FAO). After working at the National Council of Research (CNR) in Pisa, she joined FAO in 2006. Currently, she works with the Statistics Division, to improve and management and use of statistical classifications and vocabularies. In the past, she served as the coordinator of AGROVOC. She holds a Masters in Philosophy from the University of Pisa and a PhD in Computer Science from the University of Amsterdam.
LandVoc Involvement Aspects: Updates to concepts





Tim Fella

Timothy Fella&nbsp;&nbsp;(Treasurer)

Timothy Fella has over 15 years of experience of working on land tenure and land administration issues around the world. He is currently the Global Business Development Manager at the geographic information systems company ESRI, having previously worked at Indufor and USAID among others. Mr. Fella has a Master degree in Social Sciences for International Development and Bachelor degree in International Relations.
LandVoc Involvement Aspects: Supporting promotion and uptake​





Mike Powell
Emergent Works

Mike Powel&nbsp;(Advisor)

Mike Powell is former director of the IKM Emergent program, focusing on knowledge management in development, and now works as an independent consultant on ICT4D. His work focuses on being an effective intermediary between technology developers and users of information and communications systems at all levels in the development sector. This involves action to relate the technical choices that have to be made as ICT systems are developed to the intended relationships and information needs of those who want to use the result as a resource for development.
Mike has championed action research work to understand the impact of emerging technologies such as linked data, noting that when new practices such as the use of linked data are being introduced, their impact on development dynamics is very often overlooked and underfunded.
LandVoc Involvement Aspects: Translations, Updates to concepts




Professor Moha El-ayachi
NELGA North Africa

Professor Moha El-ayachi

Professor Moha El-ayachi, Professor at the Institute of Agronomy and Veterinary Medicine Hassan II, Collège of Geomatic Sciences and Surveying Engineering, Morocco. His domain of academic and research activities are Land governance and geospatial sciences. Currently, He is the Academic Coordinator of the Master degree program in Geospatial Sciences and Land Governance and leading the regional Network of Excellence on Land Governance in North Africa. He served as Editor-in-Chief of the African Journal on Land Policy and Geospatial Sciences. He is consultant Educator and certified Trainer in Land governance enhancement using the GNSS based VRS Network technology. He fluently conducts studies in Arabic, English, and French. The major topics of his work are linked to the use of Mobile GIS technology gathering both the GIS tools and GNSS solutions to facilitate spatial data collecting and processing and enhance land management and natural resources management.
LandVoc Involvement Aspects: Translations, Updates to concepts




Girma Habtegiorgis
Geospatial Information Institute

Girma Habtegiorgis

Girma Habtegiorgis is now technical advisor and trainer at Geospatial Information Institute. He has been been working as director, coordinating and managing to update and modernize reference frame, topographic surveying, field test and methodology study of cadastral survey to choose suitable for Ethiopia, and as an instructor, giving lecture in surveying.
LandVoc Involvement Aspects: Translations




Volkan Çağdaş
Yildiz Technical University

Volkan Çağdaş

Volkan Çağdaş is associate professor on cadastre and land administration at Yildiz Technical University, Department of Geomatic Engineering. He is co-author of Cadastre and Land Administration Thesaurus (CaLAThe) together with professor emeritus Erik Stubkjær. He has been teaching on cadastre, immovable property law, land re-adjustment, real estate valuation, and land information management systems at undergraduate and graduate levels. His current research includes development of semantic tools or knowledge organization systems which may support standardization activities in the domain of cadastre and land administration.
LandVoc Involvement Aspects: Translations, Updates to concepts




Stein T. Holden  
Norwegian University of Life Sciences

Stein T. Holden

Stein is a professor in Development and Resource Economics in the School of Economics and Business at Norwegian University of Life Sciences, Ås, Norway. He is also an active member of the new Centre for Land Tenure Studies in our university that was established in 2011 and is a collaboration between four of our Departments.
LandVoc Involvement Aspects:  Updates to concepts



Tarun Ghawana
Swinburne University of Technology

Tarun Ghawana

Tarun Ghawana is doing his PhD in land administration and disaster risk management from Swinburne University of Technology, Australia. He is an M.Sc in GIS with Specialization in natural resource planning and coordination from International Institute of Geoinformation Science and Earth Observation, Netherlands. He has worked as a GIS expert in India, Netherlands, Kenya and Germany with academia, government sector as well as private consultancies. His area of expertise includes land administration, disaster risk management and GIS. 
LandVoc Involvement Aspect: Updates to concepts, Translations

Related content: 
LandVoc - Community of Experts Workshop
Conference Papers & Reports
September 2020

This report provides a summary of a two-part online workshop in June 2020 to explore the creation of a community of experts to support the ongoing development of the LandVoc concept scheme, and to support ongoing contributions from the LandVoc community to AGROVOC.

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