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Featured researches published by Jean Wencélius.


Ecology and Society | 2016

Interhousehold variability and its effects on seed circulation networks: a case study from northern Cameroon

Jean Wencélius; Mathieu Thomas; Pierre Barbillon; Eric Garine

We present a detailed ethnographic case study of sorghum seed acquisitions in a smallholder farming society in northern Cameroon. The effects of variability in household demographics and socioeconomic status on observed patterns of seed provisioning are explored alongside other variables such as age and gender. Our data set comprised 223 seed acquisition events. Independence tests (Pearsons chi-square and Fishers exact tests) were carried out to test for significant dependencies between individual- or household- level characteristics and properties of seed acquisition events (categories of seed source, social relationship of exchange, and type of landrace). Results indicate that wealth is a structuring factor of the local seed circulation network in as much as it is highly correlated with household composition and size. Members from wealthy households benefit from a more diverse set of seed sources. Their greater number of coresidents and the importance of intrahousehold dynamics of seed transactions also play a role in making wealthy farmers more seed secure than others. The methodological implications of our findings indicate that when documenting seed exchange networks, the collection of data through a single informant or the undertaking of social network analyses at the household level may induce important biases.


Food Policy | 2015

Farmer seed networks make a limited contribution to agriculture? Four common misconceptions

Oliver T. Coomes; Shawn McGuire; Eric Garine; Sophie Caillon; Doyle B. McKey; Elise Demeulenaere; D. I. Jarvis; Guntra Aistara; Adeline Barnaud; Pascal Clouvel; Laure Emperaire; Sélim Louafi; Pierre Martin; François Massol; Marco Pautasso; Chloé Violon; Jean Wencélius


Archive | 2013

De qui les variétés traditionnelles de plantes cultivées pourraient-elles être le patrimoine ? Réflexions depuis le bassin du lac Tchad

Eric Garine; Anne Luxereau; Jean Wencélius; Chloé Violon; Thierry Robert; Adeline Barnaud; Sophie Caillon; Christine Raimond


Advances in Ecological Research | 2015

A network-based method to detect patterns of local crop biodiversity: Validation at the species and infra-species levels

Mathieu Thomas; Nicolas Verzelen; Pierre Barbillon; Oliver T. Coomes; Sophie Caillon; Doyle McKey; Marianne Elias; Eric Garine; Christine Raimond; Edmond Dounias; D. I. Jarvis; Jean Wencélius; Christian Leclerc; Vanesse Labeyrie; Pham Hung Cuong; Nguyen Thi Ngoc Hue; B. R. Sthapit; Ram Rana; Adeline Barnaud; Chloé Violon; Luis Manuel Arias Reyes; Luis Latournerie Moreno; Paola De Santis; François Massol


Les Cahiers d’Outre-Mer. Revue de géographie de Bordeaux | 2014

Dans les sillons de l'alliance. Ethnographie de la circulation des semences de sorgho dans l'Extrême-Nord du Cameroun

Jean Wencélius; Eric Garine


Archive | 2018

Which scale to understand seed fluxes in small-scale farming societies? Snapshots of sorghum from Africa

Eric Garine; Vanesse Labeyrie; Chloé Violon; Jean Wencélius; Christian Leclerc; Christine Raimond


Archive | 2016

Research, part of a Special Feature on Networking the Environment: Social Network Analysis in Environmental Management and Local Ecological Knowledge Studies Interhousehold variability and its effects on seed circulation networks: a case study from northern Cameroon

Jean Wencélius; Mathieu Thomas; Pierre Barbillon; Eric Garine


Colloque international ethnographies plurielles: Ethnographie et comparaison | 2016

Des ours dans mon jardin, des éléphants dans mon champ : comparaison des indicateurs locaux des changements environnementaux aux Nords et aux Suds

Anne Sourdril; Marc Deconchat; Emilie Andrieux; Sylvain Aoudou Doua; Cécile Barnaud; Nadia Belaidi; Brian Burke; Eric Garine; Michel De Garine-Wichatitsky; Chloé Guerbois; Christine Raimond; Meredith Welch-­Devine; Jean Wencélius


14th Conference of the International Society for Veterinary Epidemiology and Economics: planning our future | 2016

Indigenous and scientific knowledge regarding ticks and tick-borne diseases in wildlife-livestock interface areas in Zimbabwe. [017]

Michel De Garine-Wichatitsky; Lenin Jomane; Musavengana Tivapasi; Melody Belgherbi; T. Hove; Eric Garine-Wichatitsky; Jean Wencélius; Davies M. Pfukenyi; Billy B. Mukamuri; Alexandre Caron


Les Cahiers d’Outre-Mer. Revue de géographie de Bordeaux | 2014

Histoire d’une innovation agricole récente à l’échelle régionale : quelle différenciation des sorghos repiqués dans le bassin du lac Tchad ?

Abdoul-Aziz Saïdou; Christine Raimond; Clélia Soler; Tuong-Vi Cao Hamadou; Richard Kenga; Laure Benoit; Jean Wencélius; Oberline Fokou; Camille Chauvin; Souaybou Ekeke; Hélène Joly

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Christine Raimond

Centre national de la recherche scientifique

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Eric Garine

Paris West University Nanterre La Défense

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Adeline Barnaud

Institut de recherche pour le développement

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Sophie Caillon

Centre national de la recherche scientifique

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Mathieu Thomas

Institut national de la recherche agronomique

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Anne Luxereau

Centre national de la recherche scientifique

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Christian Leclerc

Centre de coopération internationale en recherche agronomique pour le développement

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Vanesse Labeyrie

Centre de coopération internationale en recherche agronomique pour le développement

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