Camera trap; Upper Niger National Park; Protected area; Terrestrial mammals; Threatened species; Mammal assemblage; Occupancy
Abstract :
[en] The Upper Niger National Park (UNNP) is the oldest park and one of the most promising conservation areas in Guinea; yet, its mammalian fauna remains poorly documented. Camera trapping has become an essential tool for revealing the diversity and assemblage structure of such communities. This study employed camera traps to improve knowledge about terrestrial and semi-terrestrial mammals with body mass > 0.5 kg (Sciuridae and heavier) in the Mafou Fully Protected Area (Mafou FPA), the principal core zone of the UNNP. The survey was conducted during the dry season, from January to May 2025. Sampling targeted animal trails within forest habitats in the Mafou FPA and involved the deployment of 53 camera traps with an average inter-trap distance of 2 km. Across 4239 camera-days of sampling effort, we collected 10,334 usable images and videos, yielding 2634 independent detection events. Thirty taxa across 15 families and five orders, including six species of high conservation concern according to the IUCN Red List (version 2025-1) were recorded. The mammal assemblage consists of species from the three known trophic levels (prey, mesopredators, and apex predators), with predominance of medium-sized prey species. Our results demonstrate a remarkable richness in frugivorous seed-dispersing species, ecosystem-engineering species, and the presence of a megaherbivore, which all contribute to its ecological dynamics. Despite a notable human activity index of 0.42, occupancy models revealed broad spatial distribution of medium-sized mammals within this protected area. The occupancy patterns demonstrated that occurrence of some species might be sensitive to human disturbances in the area. These findings are an important contribution to Guinean and West African biodiversity assessments. They highlight the critical conservation value of the UNNP within the subregion.
Disciplines :
Environmental sciences & ecology Zoology
Author, co-author :
Ganvoedjre, Mahutin Bruno ; Regional Post-Graduate Training School on Integrated Management of Tropical Forests and Territories (ERAIFT/UNESCO), University of Kinshasa, Kinshasa P.O. Box 15373, Democratic Republic of the Congo
Oularé, Siaka; Upper Niger National Park (UNNP), Guinean Office of National Parks and Wildlife Reserves (OGPNRF), Conakry P.O. Box 634, Guinea
Kamgang, Serge Alexis ; Regional Post-Graduate Training School on Integrated Management of Tropical Forests and Territories (ERAIFT/UNESCO), University of Kinshasa, Kinshasa P.O. Box 15373, Democratic Republic of the Congo ; Garoua Wildlife School (EFG), Garoua P.O. Box 271, Cameroon
Vermeulen, Cédric ; Université de Liège - ULiège > TERRA Research Centre > Gestion des ressources forestières ; Regional Post-Graduate Training School on Integrated Management of Tropical Forests and Territories (ERAIFT/UNESCO), University of Kinshasa, Kinshasa P.O. Box 15373, Democratic Republic of the Congo
Language :
English
Title :
Using Camera Trapping to Assess the Status of the Mammalian Community in the Mafou Fully Protected Area, Upper Niger National Park (Guinea)
USFWS - United States Fish and Wildlife Service AGRINATURA ULiège - University of Liège ULiège. GxABT - Liège Université. Gembloux Agro-Bio Tech
Funding text :
U.S. Fish and Wildlife Service (USFWS) and TUSK through Chimpanzee Conservation Center (CCC) funded data collection. We received additional funding from AGRINATURA/UE (European Alliance on Agricultural Knowledge for Development/European Union) through
ERAIFT/UNESCO, and from University of Liège/Gembloux Agro-Bio Tech.
UICN ESARO État des Aires Protégées et de Conservation D’Afrique Orientale et Australe 2nd ed. Série de Rapports sur L’état des Aires Protégées et de Conservation nº 1 UICN Gland, Suisse 2025 83 (In French)
Belle E.M.S. Burgess N.D. Misrachi M. Arnell A. Masumbuko B. Somda J. Hartley A. Jones R. Janes T. McSweeney C. et al. Climate Change Impacts on Biodiversity and Protected Areas in West Africa Summary of the Main Outputs of the PARCC (Protected Areas Resilient to Climate Change) Project in West Africa Belle E. UNEP-WCMC Cambridge, UK 2016 62
Hariohay K.M. Kisingo A.W. Lyimo E.H. Castico D. Shoo R.A. National Parks and Protected Areas—Conservation, Biodiversity, and Climate Action Climate-Driven Human-Wildlife Conflict in Mkomazi National Park: The Role of Land-Use Changes and Ecosystem Stressors in Shaping Conservation Challenges Vagge L. IntechOpen London, UK 2025 26 10.5772/intechopen.1012815
Ziegler S. Nikolaus G. Hutterer R. High mammalian diversity in the newly established National Park of Upper Niger, Republic of Guinea Oryx 2002 36 73 80 10.1017/s003060530200011x
Camara I.S. Inventaire des Grands Mammifères de la Zone Intégralement Protégée (Mafou) du Parc National du Haut Niger Pour la Conception D’Un plan D’Aménagement de Visualisation Eco Touristique, République de Guinée Master’s Thesis Université de Liège Liège, Belgium 2005 72 (In French)
Brugière D. Magassouba B. Pattern and sustainability of the bushmeat trade in the Haut Niger National Park, Republic of Guinea Afr. J. Ecol. 2009 44 630 639 10.1111/j.1365-2028.2008.01013.x
Diallo M.S. Evolution de la Gestion des Aires Protégées en Guinée: La Difficile Cohabitation des Politiques Publiques et des Systèmes Traditionnels: Cas du Parc National du Haut Niger Ph.D. Thesis Université du Maine Orono, ME, USA 2011 270 (In French)
Annual Report of 2023 of the Chimpanzee Conservation Center (CCC) Available online: https://www.projetprimates.com/wp-content/uploads/2023-FR-CCC-RAPPORT-ANNUEL-VF-NARRATIF.pdf (accessed on 5 April 2025)
Wright H.E. McCullough J. Alonso L.E. Diallo M.S. Une Évaluation Biologique Rapide de Trois Forêt Classées du Sud-Est de la Guinée Bulletin RAP D’evaluation Rapide 40 Conservation International Washington, DC, USA 2006 252 (In French)
Izah S.C. Ogwu M.C. Sustainable Utilization and Conservation of Africa’s Biological Resources and Environment Springer New York, NY, USA 2023
Nichols J. Williams B. Monitoring for conservation Trends Ecol. Evol. 2006 21 668 673 10.1016/j.tree.2006.08.007 16919361
Hughes L.J. Morton O. Scheffers B.R. Edwards D.P. The ecological drivers and consequences of wildlife trade Biol. Rev. 2023 98 775 791 10.1111/brv.12929 36572536
Tobler M.W. Carrillo-Percastegui S.E. Pitman R.L. Mares R. Powell G. An evaluation of camera traps for inventorying large and medium-sized terrestrial rainforest mammals Anim. Conserv. 2008 11 169 178 10.1111/J.1469-1795.2008.00169.X
Gessner J. Buchwald R. Wittemyer G. Assessing species occurrence and species-specific use patterns of Bais (forest clearings) in Central Africa with camera traps Afr. J. Ecol. 2013 52 59 68 10.1111/aje.12084
Nakashima Y. Inventorying medium and large-sized mammals in the African lowland rain-forest using camera trapping Tropics 2015 23 151 164 10.3759/tropics.23.151
Burton A.C. Critical evaluation of a long-term, locally-based wildlife monitoring program in West Africa Biodivers. Conserv. 2012 21 3079 3094 10.1007/s10531-012-0355-6
Agha M. Batter T. Bolas E.C. Collins A.C. Moreno C.M.M. Sollmann R. Gomes D. Quisquater S.P. A review of wildlife camera trapping trends across Africa Afr. J. Ecol. 2018 56 694 701 10.1111/aje.12565
Cordier C.P. Ehlers D.A. Ehlers Y. Downs C.T. Camera trap research in Africa: A systematic review to show trends in wildlife monitoring and its value as a research tool Glob. Ecol. Conserv. 2022 40 e02326 10.1016/j.gecco.2022.e02326
Trolliet F. Huynen M.-C. Vermeulen C. Hambuckers A. Use of camera traps for wildlife studies: A review Biotechnol. Agron. Soc. Environ. 2014 18 446 454
Camara L. Ghiurghi A. Pellegrini A. Programme Régional d’Appui à la Gestion Intégrée des Ressources Naturelles des Bassins du Niger et de la Gambie (AGIR): Plan d’Aménagement et de Gestion 2006-2010 du Parc National du Haut Niger Istituto d’Ecologia Applicata (IEA) Rome, Italie 2005 Available online: https://gn.chm-cbd.net/sites/gn/files/2022-03/PAG_PNHN-1.pdf (accessed on 5 April 2025) (In French)
NASA’s Data Available online: https://power.larc.nasa.gov/ (accessed on 7 April 2025)
O’Brien T.G. Baillie J.E.M. Krueger L. Cuke M. The Wildlife Picture Index: Monitoring top trophic levels Anim. Conserv. 2010 13 335 343 10.1111/j.1469-1795.2010.00357.x
TEAM Network Terrestrial Vertebrate (Camera Trap) Monitoring Protocol Implementation Manual v. 3.1. Tropical Ecology Assessment and Monitoring Network, Center for Applied Biodiversity Science, Conservation International Arlington, TX, USA 2011 69
Howe E.J. Buckland S.T. Despr M. Distance sampling with camera traps Methods Ecol. Evol. 2017 8 1558 1565 10.1111/2041-210X.12790
Kelly M.J. Jaguar monitoring in the Chiquibul Forest, Belize Caribb. Geogr. 2003 13 19 32
Martin E.H. Ndibalema V.G. Rovero F. Does Variation Between Dry and Wet Seasons Affect Tropical Forest Mammals’ Occupancy and Detectability by Camera Traps? Case Study From the Udzungwa Mountains, Tanzania Afr. J. Ecol. 2016 55 37 46 10.1111/aje.12312
Mirghani N. Llana M. Barciela A. Dotras L. Hernandez-Aguilar R.A. Galbany J. Carrascal L.M. Uncovering Cryptic Diversity: Camera Trap Insights Into the Effects of Seasonality and Anthropogenic Presence in a Mosaic Savannah Ecosystem Afr. J. Ecol. 2025 63 e70069 10.1111/aje.70069
Holvoet J. Deflandre N. Fonteyn D. Doucet J.-L. Vermeulen C. Choix du Site D’installation du Piège Photographique en Forêt: Orientation du Piège Photographique Gembloux Agro-Bio Tech, Uliège Liège, Belgique 2021 (In French)
Cronin D.T. Dancer A. Long A. Lynam A.J. Muntifering J. Palmer J. Bergl R.A. Application of SMART software for conservation area managements Conservation Technology Wich S.A. Piel A.K. Oxford University Press Oxford, UK 2021
Kingdon J. African horses Equus The Kingdon Field Guide to African Mammals 2nd ed. Redman N. Bloomsbury Publishing Plc London, UK 2015 640
Fonteyn D. Doucet J. Fayolle A. Vermeulen C. Identifier les Espèces de Mammifères D’Afrique Centrale Morphologiquement Proches Ou Peu Fréquentes sur Pièges Photographiques Gembloux Agro-Bio Tech, Uliège Liège, Belgique 2021 Available online: https://hdl.handle.net/2268/263954 (accessed on 18 April 2025) (In French)
Greenberg S. Godin T. Whittington J. Design patterns for wildlife-related camera trap image analysis Ecol. Evol. 2019 9 13706 13730 10.1002/ece3.5767 31938476
de Lame H. Holvoet H. Peeters Q. Poulain F. Note D’Utilisation EurêCam !: Développement D’Une Application Shiny Pour la Valorisation de Données Issues de Pièges Photographiques Gembloux Agro-Bio Tech, Uliège Liège, Belgique 2021 Available online: https://www.gembloux.ulg.ac.be/wp-content/uploads/sites/75/2021/10/Note-dutilisation-Appli-faune-EureCam_v2.pdf (accessed on 4 August 2025) (In French)
Meek P.D. Ballard G. Claridge A. Kays R. Moseby K. O’Brien T. O’Connell A. Sanderson J. Swann D.E. Tobler M. et al. Recommended guiding principles for reporting on camera trapping research Biodiv. Conserv. 2014 23 2321 2343 10.1007/s10531-014-0712-8
Degen A.A. Ecophysiology of Small Desert Mammals Springer New York, NY, USA 1997
Merritt J.F. The Biology of Small Mammals Johns Hopkins University Press Baltimore, MD, USA 2010
Ahumada J.A. Hurtado J. Lizcano D. Monitoring the Status and Trends of Tropical Forest Terrestrial Vertebrate Communities from Camera Trap Data: A Tool for Conservation PLoS ONE 2013 8 e73707 10.1371/journal.pone.0073707 24023898
MacKenzie D.I. Nichols J.D. Lachman G.B. Droege S. Royle J.A. Langtimm C.A. Estimating site occupancy rates when detection probabilities are less than one Ecology 2002 83 2248 2255 10.1890/0012-9658(2002)083[2248:ESORWD]2.0.CO;2
Rota C.T. Fletcher R.J. Jr. Dorazio R.M. Betts M.G. Occupancy estimation and the closure assumption J. Appl. Ecol. 2009 46 1173 1181 10.1111/j.1365-2664.2009.01734.x
Kéry M. Royle J.A. Plattner M. Dorazio R.M. Species richness and occupancy estimation in communities subject to temporary emigration Ecology 2009 90 1279 1290 10.1890/07-1794.1 19537548
Bailey L.L. MacKenzie D.I. Nichols J.D. Advances and applications of occupancy models Methods Ecol. Evol. 2014 5 1269 1279 10.1111/2041-210X.12100
Hines J.E. PRESENCE Software to Estimates Patch Occupancy Rates and Related Parameters Patuxent Wildlife Research Center Laurel, MD, USA 2006
MacKenzie D.I. Nichols J.D. Royle J.A. Pollock K.H. Bailey L.L. Hines J.E. Occupancy Estimation and Modeling: Inferring Patterns and Dynamics of Species Occurrence Elsevier New York, NY, USA 2006
Mackenzie D.I. Royle J.A. Designing occupancy studies: General advice and allocating survey effort J. Appl. Ecol. 2005 42 1105 1114 10.1111/j.1365-2664.2005.01098.x
Ancrenaz M. Andrew J.H. Ross J. Sollmann R. Wilting A. Handbook for Wildlife Monitoring Using Camera-Traps BBEC II Secretariat c/o Natural Resources Office Sabah, Malaysia 2012
Burnham K.P. Anderson D.R. Model Selection and Multimodel Inference Springer New York, NY, USA 2002 10.1007/978-0-387-22456-5_6
Welsh A.H. Lindenmayer D.B. Donnelly C.F. Fitting and Interpreting Occupancy Models PLoS ONE 2013 8 e52015 10.1371/journal.pone.0052015 23326323
Gittleman J.L. Carnivore body size: Ecological and taxonomic correlates Oecologia 1985 67 540 554 10.1007/bf00790026 28311040
Wilson D.E. Mittermeier R.A. Lacher T.E. Handbook of the Mammals of the World: Lagomorphs and Rodents Lynx Edicions Barcelona, Spain 2016 Volume 6
Demment M.W. Van Soest P.J. A Nutritional Explanation for Body-Size Patterns of Ruminant and Nonruminant Herbivores Am. Nat. 1985 125 641 672 10.1086/284369
Steuer P. Sudekum K. Tutken T. Muller D.W.H. Kaandorp J. Bucher M. Clauss M. Hummel J. Does body mass convey a digestive advantage for large herbivores? Funct. Ecol. 2014 28 1127 1134 10.1111/1365-2435.12275
Meireles J.P. Hahn-klimroth M. Müller D.W.H. Dierkes P.W. Clauss M. Body mass of adult zoo hippos (Hippopotamidae) and how they compare to data from populations in the wild JZAR 2025 13 108 116
Hall T.K.R.L. Behaviour and ecology of the wild Patas monkey, Erythrocebus patas, in Uganda J. Zool. 1966 148 15 87 10.1111/j.1469-7998.1966.tb02942.x
Ruff C.B. Long Bone Articular and Diaphyseal Structure in Old World Monkeys and Apes.II: Estimation of Body Mass Am. J. Phys. Anthropol. 2002 120 16 37 10.1002/ajpa.10118 12489135
Porter N.D. Diet, Activity Budget, and Ranging Behavior in Lowe’s Guenon (Cercopithecus campbelli lowei) in Ghana Master’s Thesis Department of Anthropology/University of Calgary Calgary, AB, Canada 2005
Dunbar R.I.M. Korstjens A. Time Constraints Limit Group Sizes and Distribution in Red and Black-and-White Colobus Monkeys Int. J. Primatol. 2007 28 551 575 10.1007/s10764-007-9148-2
Fischer J. Kopp G.H. Pesco F.D. Goffe A. Hammerschmidt K. Kalbitzer U. Klapproth M. Maciej P. Ndao I. Patzelt A. et al. Charting the neglected West: The social system of Guinea baboons Am. J. Phys. Anthropol. 2017 162 15 31 10.1002/ajpa.23144 28105722
Touré S. Soumah S. Laurenti A. Inventaire, Distribution et Abondance des Mammifères Dans le Parc National du Haut Niger (Guinée) Rapport Non Publié, Programme Régional D’Amenagement des Bassins Versants du Haut Niger et de la Haute Gambie (PRABV) Conakry, Guinée 1997 Unpublished work (In French)
Fonteyn D. Vermeulen C. Deflandre N. Cornelis D. Lhoest S. Houngbegnon F.G.A. Doucet J.-L. Fayolle A. Wildlife trail or systematic? Camera trap placement has little effect on estimates of mammal diversity in a tropical forest in Gabon Remote Sens. Ecol. Conserv. 2020 7 321 336 10.1002/rse2.191
Fischer F. Linsenmair K.E. Hector J. Wiesner H. Demography of a West African kob (Kobus kob kob) population Afr. J. Ecol. 2002 40 130 137 10.1046/j.1365-2028.2002.00345.x
UICN/PACO Evaluation de L’Efficacité de la Gestion des Aires Protégées: Aires Protégées de la République de Guinée UICN Gland, Switzerland 2008 62 (In French)
MacKenzie D.I. Nichols J.D. Occupancy as a surrogate for abundance estimation Anim. Biodivers. Conserv. 2004 27 461 467 10.32800/abc.2004.27.0461
Sollmann R. Mohamed A. Samejima H. Wilting A. Risky business or simple solution relative abundance indices from camera trapping Biol. Conserv. 2013 159 405 412 10.1016/j.biocon.2012.12.025
Rovero F. Zimmermann F. Berzi D. Meek P. “Which camera trap type and how many do I need?” A review of camera features and study designs for a range of wildlife research applications Hystrix 2013 24 148 156 10.4404/hystrix-24.2-8789
Bruce T. Amin R. Wacher T. Fankem O. Ndjassi C. Ngo M. Andrew B. Hilaire F. David N. Using camera trap data to characterise terrestrial larger-bodied mammal communities in different management sectors of the Dja Faunal Reserve, Cameroon Afr. J. Ecol. 2018 56 759 776 10.1111/aje.12574
Fotsing E.D.B. Kamkeng M.M.F. A Multi-Species Occupancy Modelling Approach to Access the Impacts of Ecological Covariates on Terrestrial Vertebrates in a Tropical Hotspot in Central, Cameroon Afr. J. Ecol. 2025 63 e70048 10.1111/aje.70048
Duonamou L. Konate A. Xu J. Humle T. Temporal evolution of bushmeat traded in High Niger National Park, Guinea, West Africa Oryx 2020 5 717 724 10.1017/S0030605319001443
Sidibe S. Inventaire Forestier et Etudes Phytosociologiques de la Zone Intégralement Protégée et de la Zone D’Intérêt Cynégétique du Parc National du Haut Niger Rapport Non Publié Pour le Programme AGIR Conakry, Guinea 2001 Unpublished work (In French)
Brugière D. Magassouba B. Sylla A. Sowe M. Population abundance of the common hippopotamus (Hippopotamus amphibius) in the Haut Niger National Park, Republic of Guinea Mammalia 2006 70 14 16 10.1515/MAMM.2006.008
Eltringham S.K. L’hippopotame commun (Hippopotamus amphibius). Dans Enquête sur le Statut et Plan D’Action Pour la Conservation: Porcs, Pécaris et Hippopotames Groupe de Spécialistes des Porcs et des Pécaris de l’UICN/SSC, Groupe de Spécialistes des Hippopotames de L’UICN/SSC UICN Gland, Switzerland 1993 25 (In French)
Lewison R.L. Family hippopotamidae hippopotamuses Handbook of the Mammals of the World: Vol. 2: Hoofed Mammals Wilson D.E. Mittermeier R.A. Lynx Edition Barcelona, Spain 2011 308 319
Willcox D. Nash H.C. Trageser S. Kim H.J. Hywood L. Connelly E. Ichu Ichu G. Kambale Nyumu J. Mousset Moumbolou C.L. Ingram D.J. et al. Evaluating methods for detecting and monitoring pangolin populations (Pholidota: Manidae) Glob. Ecol. Conserv. 2019 17 e00539 10.1016/j.gecco.2019.e00539
Bersacola E. Hill C.M. Nijman V. Hockings K.J. Examining primate community occurrence patterns in agroforest landscapes using arboreal and terrestrial camera traps Landsc. Ecol. 2022 37 3103 3121 10.1007/s10980-022-01524-7
Matthews N. Nixon S. Hardenberg A.V. Isoke S. Geary M. Targeting burrows improves detection in giant pangolin (Smutsia gigantea) camera-trap surveys Oryx 2023 57 718 726 10.1017/S0030605322000692
Kassa B. Techniques de Dénombrement et Facteurs Déterminant la Modélisation de la Dynamique de la Faune Sauvage Dans la Forêt Dense Semi-Décidue de la Lama Master’s Thesis Faculté des Sciences Agronomiques/Université Nationale du Bénin Abomey-Calavi, Benin 2001 (In French)
Lima M.-M. Evaluation de la Faune Mammalienne et Sélection de L’Habitat Dans la Forêt Classée de la LAMA (Sud-Bénin) à Partir des Pièges Photographiques Master’s Thesis Faculté des Sciences Agronomiques/Université d’Abomey-Calavi Abomey-Calavi, Benin 2018 (In French)
Djami Y.K. Fonteyn D. Ngabinzeke J.S. Meeys M.N. Poulain F. Tipi E.L. Vermeulen C. Status of terrestrial mammal populations in the Luki Biosphere Reserve (Democratic Republic of Congo) Biotechnol. Agron. Soc. Environ. 2023 27 4 (In French) 10.25518/1780-4507.20430
Hedwig D. Kienast I. Bonnet M. Curran B.K. Courage A. Boesch C. Kühl H.S. King T. A camera trap assessment of the forest mammal community within the transitional savannah-forest mosaic of the Batéké Plateau National Park, Gabon Afr. J. Ecol. 2018 56 777 790 10.1111/aje.12497
Assou D. D’Cruze N. Kirkland H. Auliya M. Macdonald D.W. Segniagbeto G.H. Camera trap survey of mammals in the Fazao-Malfakassa National Park, Togo, West Africa Afr. J. Ecol. 2021 59 583 596 10.1111/aje.12856
Ridder R.M. Global Forest Resources Assessment: Options and Recommendations for a Global Remote Sensing Survey of Forests FAO Rome, Italy 2010
Haurez B. Languy M. de Wasseige C. Julve C. Vermeulen C. Bracke C. Nagalo Y.A. Forêts Denses Humides et Aires Protégées Forestières D’Afrique de L’Ouest—État des Lieux et Perspectives AGRECO G.E.I.E Liège, Belgium 2024 288 (In French)