8 results on '"Richard Sufo Kankeu"'
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2. Detecting vulnerability of humid tropical forests to multiple stressors
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Fred Stolle, Francisco Román, Thomas B. Smith, Sean P. Healey, Alvaro Duque, Richard Sufo Kankeu, Katia Fernandes, Francois De Vleeschouwer, Yadvinder Malhi, Dennis Del Castillo Torres, Sylvia Wilson, Hyongki Lee, Rodrigo Vargas, Nadine Therese Laporte-Goetz, Carlos A. Nobre, Raphael Tshimanga, Matthew C. Hansen, Kristofer R. Covey, Nuno Carvalhais, Robert G. M. Spencer, Christine May Johnson, Liang Xu, Nancy L. Harris, Sassan Saatchi, Michel André, Diane Russell, Atiek Widayati, Raymond Sinsi Lumbuenamo, Michelle Venter, Hinsby Cadillo-Quiroz, Hitofumi Abe, Aurora C. Elmore, Yan Yang, Steven P. Brumby, Veronique De Sy, Juliann E. Aukema, Thomas E. Lovejoy, Marcos Longo, Lina María Sánchez-Clavijo, Douglas Sheil, Janet Chernela, Jean-Michel Martinez, Alice M. S. Durieux, Victoria Gammino, Jeremy Radachowsky, Gillian Ann Cerbu, Gae Yansom Gowae, Dennis Garrity, Margaret Lowman, Joshua West, Lucy Gibbon, Robert G. Hilton, David Gibbs, Stuart J. Davies, Adam F. A. Pellegrini, Hesti Lestari Tata, Luis E. Fernandez, Isai V. Cubillos, Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Jet Propulsion Laboratory (JPL), California Institute of Technology (CALTECH)-NASA, Centre National de la Recherche Scientifique (CNRS), Instituto Franco-Argentino sobre Estudios de Clima y sus Impactos [Buenos Aires] (IFAECI), Centro de Investigaciones del Mar y la Atmósfera (CIMA), Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET)-Facultad de Ciencias Exactas y Naturales [Buenos Aires] (FCEyN), Universidad de Buenos Aires [Buenos Aires] (UBA)-Universidad de Buenos Aires [Buenos Aires] (UBA)-Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET)-Facultad de Ciencias Exactas y Naturales [Buenos Aires] (FCEyN), and Universidad de Buenos Aires [Buenos Aires] (UBA)-Universidad de Buenos Aires [Buenos Aires] (UBA)-Centre National de la Recherche Scientifique (CNRS)
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010504 meteorology & atmospheric sciences ,Vulnerability index ,Life on Land ,forest response ,autocorrelation ,Humid subtropical climate ,Vulnerability ,Climate change ,humid tropical forests ,tipping point ,01 natural sciences ,03 medical and health sciences ,Laboratory of Geo-information Science and Remote Sensing ,carbon cycle ,Earth and Planetary Sciences (miscellaneous) ,Bosecologie en Bosbeheer ,Laboratorium voor Geo-informatiekunde en Remote Sensing ,Amazon ,ComputingMilieux_MISCELLANEOUS ,030304 developmental biology ,0105 earth and related environmental sciences ,General Environmental Science ,early warning ,0303 health sciences ,Biomass (ecology) ,Land use ,Ecology ,Desenvolupament humà i sostenible::Degradació ambiental::Canvi climàtic [Àrees temàtiques de la UPC] ,Primary production ,Tròpics -- Clima ,15. Life on land ,Climatic changes ,Tipping point (climatology) ,PE&RC ,Forest Ecology and Forest Management ,Boscos -- Conservació ,Climate Action ,Boscos i silvicultura ,Congo ,13. Climate action ,vulnerability index ,Environmental science ,Forests and forestry ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,climate stress ,Canvis climàtics - Abstract
Humid tropical forests play a dominant role in the functioning of Earth but are under increasing threat from changes in land use and climate. How forest vulnerability varies across space and time and what level of stress forests can tolerate before facing a tipping point are poorly understood. Here, we develop a tropical forest vulnerability index (TFVI) to detect and evaluate the vulnerability of global tropical forests to threats across space and time. We show that climate change together with land-use change have slowed the recovery rate of forest carbon cycling. Temporal autocorrelation, as an indicator of this slow recovery, increases substantially for above-ground biomass, gross primary production, and evapotranspiration when climate stress reaches a critical level. Forests in the Americas exhibit extensive vulnerability to these stressors, while in Africa, forests show relative resilience to climate, and in Asia reveal more vulnerability to land use and fragmentation. TFVI can systematically track the response of tropical forests to multiple stressors and provide early-warning signals for regions undergoing critical transitions.
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- 2021
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3. Reprint of 'Governing knowledge transfer for deforestation monitoring: Insights from REDD+ projects in the Congo Basin region'
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Richard Sufo Kankeu, Moise Tsayem Demaze, Max Krott, Denis Jean Sonwa, Symphorien Ongolo, Espaces et Sociétés (ESO), Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université d'Angers (UA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Le Mans Université (UM), Center for International Forestry Research [Yaoundé] (CIFOR), Center for International Forestry Research (CIFOR), and Consultative Group on International Agricultural Research [CGIAR] (CGIAR)-Consultative Group on International Agricultural Research [CGIAR] (CGIAR)
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0106 biological sciences ,Economics and Econometrics ,Sociology and Political Science ,[SDV]Life Sciences [q-bio] ,0211 other engineering and technologies ,021107 urban & regional planning ,Forestry ,02 engineering and technology ,Management, Monitoring, Policy and Law ,010603 evolutionary biology ,01 natural sciences - Published
- 2020
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4. Using Local Capacity To Assess Carbon Stocks In Two Community Forest In South-East Cameroon
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Denis J. Sonwa, Moise Tsayem Demaze, Richard Sufo Kankeu, Center for International Forestry Research (CIFOR), Consultative Group on International Agricultural Research [CGIAR] (CGIAR), Espaces et Sociétés (ESO), Le Mans Université (UM)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Université d'Angers (UA)-AGROCAMPUS OUEST-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN), Université de Nantes (UN)-Université de Nantes (UN), Espaces Géographiques et Sociétés (ESO), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Le Mans Université (UM)-Université d'Angers (UA)-Université de Nantes (UN)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université d'Angers (UA)-Université de Caen Normandie (UNICAEN), and Normandie Université (NU)-Normandie Université (NU)-Le Mans Université (UM)
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Estimation ,Biomass (ecology) ,Forest inventory ,010504 meteorology & atmospheric sciences ,Renewable Energy, Sustainability and the Environment ,business.industry ,Geography, Planning and Development ,Environmental resource management ,Developing country ,Forestry ,[SHS.GEO]Humanities and Social Sciences/Geography ,010501 environmental sciences ,15. Life on land ,Management, Monitoring, Policy and Law ,01 natural sciences ,Geography ,Work (electrical) ,Data quality ,[SHS.ENVIR]Humanities and Social Sciences/Environmental studies ,Traditional knowledge ,Duration (project management) ,business ,ComputingMilieux_MISCELLANEOUS ,0105 earth and related environmental sciences ,Food Science - Abstract
Quantification of forest biomass is a challenge for developing countries due to insufficient data and lack of expertise. Involving villagers in this work, especially in the case of local forests could improve the speed and efficiency of this quantification process. This article describes the participatory approach implemented to assess carbon stocks in two community forests located in south-eastern Cameroon. This was put into practice for forest inventory work and the estimation of biomass and carbon stocks. The aim was to use classic scientific approaches of inventory and cartography, but involving local populations in the different stages of the process. The involvement of local populations, through the mobilization of their indigenous knowledge, significantly increases data quality and considerably reduces the costs and duration of the evaluation process. Ultimately, only 2% of the trees inventoried were “unknown” by local botanists, 92.3% of the species identified by them had accurate scientific correspondences. Help of local actors contributed to halving the time required to set up the plots and reduced the cost of operations by twenty times compared with using experts. REDD +, at least its local level monitoring dimension, could be successful if implemented in a dialectic involving expert scientists and local populations.
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- 2020
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5. Quantifying post logging biomass loss using satellite images and ground measurements in Southeast Cameroon
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Richard Sufo Kankeu, Denis J. Sonwa, Noelle Marlène Moankang Nkal, Richard Eba'a Atyi, Le Mans Université - Faculté des Lettres, Langues et Sciences Humaines (UM UFR LLSH), Le Mans Université (UM), Central Africa Regional Office, Center for International Forestry Research (CIFOR), and Consultative Group on International Agricultural Research [CGIAR] (CGIAR)-Consultative Group on International Agricultural Research [CGIAR] (CGIAR)
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0106 biological sciences ,Canopy ,Biomass (ecology) ,010504 meteorology & atmospheric sciences ,Ecology ,Logging ,Forestry ,[SHS.GEO]Humanities and Social Sciences/Geography ,15. Life on land ,Structural basin ,Felling ,010603 evolutionary biology ,01 natural sciences ,[SHS]Humanities and Social Sciences ,[SHS.ENVIR]Humanities and Social Sciences/Environmental studies ,Greenhouse gas ,Environmental science ,Satellite ,Satellite imagery ,ComputingMilieux_MISCELLANEOUS ,0105 earth and related environmental sciences - Abstract
Forest logging in the Congo Basin has led to forest fragmentation due to logging infrastructures and felling gaps. In the same vein, forest concessions in the Congo Basin have increasing interest in the REDD+ mechanism. However, there is little information or field data on carbon emissions from forest degradation caused by logging. To help fill this gap, Landsat 7 and 8 and SPOT 4 images of the East Region of Cameroon were processed and combined with field measurements (measurement of forest roads widths, felling gaps and log yards) to assess all disturbed areas. Also, measurements of different types of forest infrastructures helped to highlight emission factors. Forest contributes to 5.18 % of the degradation of the annual allowable cut (AAC) (84.53 ha) corresponding to 4.09 % of forest carbon stock (6.92 t ha−1). Felling gaps constitute the primary source of degradation, represented an estimated area of 32.41 ha (2 % of the cutting area) far ahead of primary roads (18.44 ha) and skid trails (16.36 ha). Assessment of the impact of degradation under the canopy requires the use of high resolution satellite images and field surveys.
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- 2016
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6. Forest and climate change in central Africa: synergy between mitigation and adaptation
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Richard Eba’a Atyi, Eugene Chia Loh, Félicien Kengoum, Alba Saray Pérez Terán, Richard Sufo Kankeu, Center for International Forestry Research (CIFOR), Consultative Group on International Agricultural Research [CGIAR] (CGIAR), Le Mans Université - Faculté des Lettres, Langues et Sciences Humaines (UM UFR LLSH), Le Mans Université (UM), and sufo kankeu, Richard
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[SHS.ENVIR] Humanities and Social Sciences/Environmental studies ,[SHS.GEO] Humanities and Social Sciences/Geography ,[SHS.ENVIR]Humanities and Social Sciences/Environmental studies ,[SHS] Humanities and Social Sciences ,[SHS.GEO]Humanities and Social Sciences/Geography ,ComputingMilieux_MISCELLANEOUS ,[SHS]Humanities and Social Sciences - Abstract
International audience
- Published
- 2015
7. Gouvernance du patrimoine foncier traditionnel à l’épreuve de l’étalement urbain : cas du village Bamougoum face à la ville de Bafoussam (ouest-Cameroun)
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Aristide Yemmafouo, Richard Sufo Kankeu, Université de Dschang, Le Mans Université - Faculté des Lettres, Langues et Sciences Humaines (UM UFR LLSH), Le Mans Université (UM), Center for International Forestry Research (CIFOR), Consultative Group on International Agricultural Research [CGIAR] (CGIAR), and sufo kankeu, Richard
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[SHS.ENVIR] Humanities and Social Sciences/Environmental studies ,[SHS.GEO] Humanities and Social Sciences/Geography ,[SHS.ENVIR]Humanities and Social Sciences/Environmental studies ,[SHS] Humanities and Social Sciences ,[SHS.GEO]Humanities and Social Sciences/Geography ,ComputingMilieux_MISCELLANEOUS ,[SHS]Humanities and Social Sciences - Abstract
International audience
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- 2011
8. Les engagements internationaux des pays d'Afrique centrale en réponse aux changements climatiques
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Sonwa, Denis Jean, Sufo Kankeu, Richard, Itsoua Madzous, Gervais Ludovic, Loh Chia, Eugene, Medjibe, Vincent, Langevin, Christine, Ouarzazi, Leslie, Carodenuto, Sophia, Moufouma-Okia, Wilfran, Guizol, Philippe, Ndjatsana, Michel, Ebuy, Jérôme, Tellro Wai, Nadji, Tsayem Demaze, Moïse, Kengoum, Félicien, Kenfack, Chrislain Eric, Bele, Youssoufa, Fobissié, Kalamé, Gapia, Martial, Kevis Koss, Narcisse Landry, Tsayem Demaze, Moise, Richard Eba’a Atyi, Philippe Mayaux, Pierre Defourny, Nicolas Bayol, Filippo Saracco, Dany Pokem, Richard Sufo Kankeu, Robert Nasi, François Hiol Hiol, and Guillaume Lescuyer
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[SHS.GEO] Humanities and Social Sciences/Geography ,[SDE.ES] Environmental Sciences/Environmental and Society - Abstract
L'article 4 de la CCNUCC rappelle les principaux engagements des parties, en tenant compte de leurs responsabilités communes, mais aussi différenciées, et de la spécificité de leurspriorités de développement, ainsi que de leurs objectifs et de leur situation. Au moment où les pays de l'Afrique centrale s'activent à réviser leur CDN dans le cadre de la mise en oeuvre de l'Accord de Paris et à renforcer les efforts pour répondre à leurs engagements internationaux en matière de lutte contre les changements climatiques, il est important de faire le point sur la situation actuelle.
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- 2022
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