Journal of Forestry Research

, Volume 28, Issue 5, pp 1083–1096

Farmers’ contributions to the conservation of tree diversity in the Groundnut Basin, Senegal

Original Paper


Tree diversity in West Africa is threatened by intensified land uses and salinization, and farmers’ role in conservation of tree species is unclear. We hypothesized that farmers contribute to conservation of tree diversity through protection of trees in their agroforestry landscapes and compared the diversity and structure of the tree vegetation across landscape classes. Inventories were carried out in three villages in the Groundnut Basin in Senegal, assessing tree diversity, density and crown cover. Tree diversity as assessed by species accumulation curves was high in forests, but cultivated landscapes had comparable or almost comparable diversity, especially in the cases where the forest was planted or was affected by charcoal production. However, the occurrence of exotic species was higher in cultivated parts of the landscape, and although many species were in common, ordination plots indicated that forests and cultivated landscapes to some degree had different species composition. Salinity had a strong influence on vegetation, not only in the tans (salt marshes) but also across the other landscape classes. In conclusion, agroforestry landscapes in the three villages harbor considerable tree diversity, but insufficient to fully conserve the tree species. We argue that informing and including farmers in tree management in the region will contribute to overall conservation of tree genetic resources.


Tree diversity Conservation-landscape classes Environmental factors Groundnut Basin 

Supplementary material

11676_2017_374_MOESM1_ESM.docx (86 kb)
Supplementary material 1 (DOCX 86 kb)


  1. Abdourhamane H, Morou B, Rabiou H, Amhamane A (2013) Caractéristiques floristiques, diversité et structure de la végétation ligneuse dans le Centre-Sud du Niger: cas du complexe des forêts classées de Dan kada Dodo-Dan Gado. Int J Biol Chem Sci 7(3):1048–1068Google Scholar
  2. Allen RB, McIntosh PD, Wilson JB (1997) The distribution of plants in relation to pH and salinity on inland saline/alkaline soils in Central Otago, New Zealand. N Z J Bot 35(4):517–523Google Scholar
  3. Anon (1998) Code forestier: Loi N°98/03 du 08 janvier 1998. Ministere de l’environnement et de la protection de la nature, Senegal, p 39Google Scholar
  4. Anon (2013) Acte III de la decentralisation: Loi N° 2013-10 du 28 décembre 2013 portant Code général des Collectivités locales, SenegalGoogle Scholar
  5. Anyonge-Bashir M, Udoto P (2012) Beyond philanthropy: community nature-based enterprises as a basis for wildlife conservation. In The George Wright Forum, vol 29, no. 1, pp 67–73Google Scholar
  6. Ashenaffi T, Samb B, Dièye B (1998) Etude de l’efficacite du traitement fongicide de semences d’arachide (Arachis hypogea L.) contre des champignons pathogenes du sol. Mededelingen van de FaculteitLandbouwkundigeenToegepasteBiologischeWetenschappen (Rijksuniversiteitte Gent), vol 63, pp 1001–1008Google Scholar
  7. Augusseau X, Nikiéma P, Torquebiau E (2006) Tree biodiversity, land dynamics and farmers’ strategies on the agricultural frontier of southwestern Burkina Faso. Biodivers Conserv 15(2):613–630Google Scholar
  8. Bayala J, Sanou J, Teklehaimanot Z, Kalinganire A, Ouédraogo SJ (2014) Parklands for buffering climate risk and sustaining agricultural production in the Sahel of West Africa. Curr Opin Environ Sustain 6:28–34Google Scholar
  9. Bell DT (1999) Australian trees for the rehabilitation of waterlogged and salinity-damaged landscapes. Aust J Bot 47(5):697–716Google Scholar
  10. Boffa JM (1999) Agroforestry parklands in sub-Saharan Africa (No. 34). Food and Agriculture Organization (FAO), RomeGoogle Scholar
  11. Boffa JM (2000) West African agroforestry parklands: keys to conservation and sustainable management. UNASYLVA-FAO-, 11–17Google Scholar
  12. Brandt M, Romankiewicz C, Spiekermann R, Samimi C (2014) Environmental change in time series—an interdisciplinary study in the Sahel of Mali and Senegal. J Arid Environ 105:52–63Google Scholar
  13. Brown KA, Ingram JC, Flynn DF, Razafindrazaka R, Jeannoda V (2009) Protected area safeguard tree and shrub communities from degradation and invasion: a case study in eastern Madagascar. Environ Manag 44(1):136–148Google Scholar
  14. Butchart SH, Walpole M, Collen B, van Strien A, Scharlemann JP, Almond RE, Watson R (2010) Global biodiversity: indicators of recent declines. Science 328(5982):1164–1168PubMedGoogle Scholar
  15. Caballero JM, Esteve MA, Calvo JF, Pujol JA (1994) Structure of the vegetation of salt steppes of Guadelenitin (Murcia, Spain). Stud Oecol 10(11):171–183Google Scholar
  16. Charahabil MM, Diallo A, Ngom D, Diop B, Akpo LE (2013) Importance des Combretaceae dans des forêts communautaires de la zone soudano-sahélienne au Sénégal. Science etchangementsplanétaires/Sécheresse 24(1):39–47Google Scholar
  17. Clerici N, Bodini A, Eva H, Grégoire JM, Dulieu D, Paolini C (2007) Increased isolation of two Biosphere Reserves and surrounding protected areas (WAP ecological complex, West Africa). J Nat Conserv 15(1):26–40Google Scholar
  18. Cui X, Gibbes C, Southworth J, Waylen P (2013) Using remote sensing to quantify vegetation change and ecological resilience in a semi-arid system. Land 2(2):108–130Google Scholar
  19. Dardel C, Kergoat L, Hiernaux P, Mougin E, Grippa M, Tucker CJ (2014) Re-greening Sahel: 30 years of remote sensing data and field observations (Mali, Niger). Remote Sens Environ 140:350–364Google Scholar
  20. Dewan AM, Yamaguchi Y, Rahman MZ (2012) Dynamics of land use/cover changes and the analysis of landscape fragmentation in Dhaka Metropolitan, Bangladesh. GeoJournal 77(3):315–330Google Scholar
  21. Diatta CD, Gueye M, Koma S, Akpo LE (2009) Diversité de la flore et de la végétation ligneuse de la réserve Ngazobil (Joal-Fadiouth) au Sénégal. J Sci 9(3):1–13Google Scholar
  22. Dieng NM, Dinis J, Faye S, Gonçalves M, Caetano M (2014) Combined uses of supervised classification and normalized difference vegetation index techniques to monitor land degradation in the Saloum saline estuary system. In: Diop S, Barusseau J-P, Descamp C (eds) The land/ocean interactions in the coastal zone of West and Central Africa. Estuaries of the world. Springer, pp 49–63Google Scholar
  23. Dierickx WR (2013) The salinity and alkalinity status of arid and semi-arid lands. Land Use Land Cover Soil Sci V:163–189Google Scholar
  24. Diouf A (2006) Dynamique de l’occupation du sol et logique de gestion des ressources naturelles dans la foret classee de Kassas (Kaolack). Memoire de DEA. Institut des Sciences de l’Environnement, Faculte des Sciences et Techniques, Universite de DakarGoogle Scholar
  25. Fairhead J, Leach M (1995) False forest history, complicit social analysis: rethinking some West African environmental narratives. World Dev 23(6):1023–1035Google Scholar
  26. Faye MD, Weber JC, Mounkoro B, Dakouo JM (2010) Contribution of parkland trees to farmers’ livelihoods: a case study from Mali. Dev Pract 20(3):428–434Google Scholar
  27. Foley JA, DeFries R, Asner GP, Barford C, Bonan G, Carpenter SR, Snyder PK (2005) Global consequences of land use. Science 309(5734):570–574PubMedGoogle Scholar
  28. Garrity DP, Akinnifesi FK, Ajayi OC, Weldesemayat SG, Mowo JG, Kalinganire A, Larwanou M, Bayala J (2010) Evergreen agriculture: a robust approach to sustainable food security in Africa. Food Secur 2:197–214Google Scholar
  29. Gijsbers HJM, Kessler JJ, Knevel MK (1994) Dynamics and natural regeneration of woody species in farmed parklands in the Sahel region (Province of Passore, Burkina Faso). Forest Ecol Manag 63:1–12Google Scholar
  30. Gonzalez P (2001) Desertification and a shift of forest species in the West African Sahel. Clim Res 17(2):217–228Google Scholar
  31. Gonzalez P, Tucker CJ, Sy H (2012) Tree density and species decline in the African Sahel attributable to climate. J Arid Environ 78:55–64Google Scholar
  32. Hansen NT, Ræbild A, Hansen HH (2012) Management of trees in northern Ghana—when the approach of development organizations contradicts local practices. Forests Trees Livelihoods 21(4):241–252Google Scholar
  33. Hejcmanovā-Nežerková P, Hejcman M (2006) A canonical correspondence analysis (CCA) of the vegetation–environment relationships in Sudanese savannah, Senegal. S Afr J Bot 72(2):256–262Google Scholar
  34. Herrmann SM, Tappan GG (2013) Vegetation impoverishment despite greening: a case study from central Senegal. J Arid Environ 90:55–66Google Scholar
  35. Herrmann SM, Anyamba A, Tucker CJ (2005) Recent trends in vegetation dynamics in the African Sahel and their relationship to climate. Glob Environ Change 15(4):394–404Google Scholar
  36. Hubert H (1920) Le dessechement progressive en Afrique occidentale francaise. Comité d'Etudes Historiques et Scientifiques de l'Afrique Occidentale Française, p 401Google Scholar
  37. Kandji ST, Verchot L, Mackensen J (2006) Climate change and variability in the Sahel region: Impacts and adaptation strategies in the agricultural sector. World Agroforestry CentreGoogle Scholar
  38. Kindt R, Coe R (2005) Tree diversity analysis. A manual and software for common statistical methods for ecological and biodiversity studies. World Agroforestry Centre (ICRAF), Nairobi. ISBN 92-9059-179-XGoogle Scholar
  39. Kindt R, Kalinganire A, Larwanou M, Belem M, Dakouo JM, Bayala J, Kairé M (2008) Species accumulation within land use and tree diameter categories in Burkina Faso, Mali, Niger and Senegal. Biodivers Conserv 17(8):1883–1905Google Scholar
  40. Lawesson JE (1990) Sahelian woody vegetation in Senegal. Vegetatio 86(2):161–174Google Scholar
  41. Lericollais A (1989) La mort des arbres à Sob, en pays Sereer (Sénégal). Tropiques: lieux et liens: florilège offert à Paul pélissier et Gilles Sautter. DA (Ed). Paris, ORSTOM, pp 187–197Google Scholar
  42. Lykke AM, Sambou B (1998) Structure, floristic composition, and vegetation forming factors of three vegetation types in Senegal. Nord J Bot 18(2):129–140Google Scholar
  43. Lykke AM, Kristensen MK, Ganaba S (2004) Valuation of local use and dynamics of 56 woody species in the Sahel. Biodivers Conserv 13(10):1961–1990Google Scholar
  44. Mbow C, Nielsen TT, Rasmussen K (2000) Savanna fires in east-central Senegal: distribution patterns, resource management and perceptions. Hum Ecol 28(4):561–583Google Scholar
  45. Mbow C, Mertz O, Diouf A, Rasmussen K, Reenberg A (2008) The history of environmental change and adaptation in eastern Saloum–Senegal—Driving forces and perceptions. Global Planet Change 64(3):210–221Google Scholar
  46. Mertz O, Mbow C, Reenberg A, Diouf A (2009) Farmers’ perceptions of climate change and agricultural adaptation strategies in rural Sahel. Environ Manag 43(5):804–816Google Scholar
  47. Mertz O, D’haen S, Maiga A, Moussa IB, Barbier B, Diouf A, Dabi D (2012) Climate variability and environmental stress in the Sudan-Sahel zone of West Africa. Ambio 41(4):380–392PubMedPubMedCentralGoogle Scholar
  48. Munns R (2002) Comparative physiology of salt and water stress. Plant Cell Environ 25(2):239–250PubMedGoogle Scholar
  49. Niamir-Fuller M, Kerven C, Reid R, Milner-Gulland E (2012) Co-existence of wildlife and pastoralism on extensive rangelands: competition or compatibility? Pastoralism 2(1):1–14Google Scholar
  50. Olsson L, Eklundh L, Ardö J (2005) A recent greening of the Sahel—trends, patterns and potential causes. J Arid Environ 63(3):556–566Google Scholar
  51. Parkouda C, Diawara B, Ganou L, Lamien N (2007) Potentialités nutritionnelles des produits de 16 espèces fruitières locales au Burkina Faso. Science et technique. Sciences appliquées et Technologies 1:35–47Google Scholar
  52. Pelissier P (1951) Sur la desertification des territoires septentrionaux de l’AOF. Cah.d’outre-mer 4(13):80–85Google Scholar
  53. Pélissier R, Dray S, Sabatier D (2002) Within-plot relationships between tree species occurrences and hydrological soil constraints: an example in French Guiana investigated through canonical correlation analysis. Plant Ecol 162(2):143–156Google Scholar
  54. Peltier R, Dessard H, Ichaou A (2009) Bilan après quinze ans de gestion communautaire d’une forêt villageoise de l’Ouest nigérien = Fifteen years of community management of a Niger village forest. Sécheresse 20(4):20–31Google Scholar
  55. Projet de Reboisements Communautaires dans le Bassin Arachidier du Senegal (1982) La Motivation et les actions des populations a l’egard de l’arbre. FAO/FINNIDA FO: GCP/SEN/023/FIN Rapport technique n° 1Google Scholar
  56. Ræbild A, Hansen HH, Dartell J, Ky JMK, Sanou L (2007) Ethnicity, land use and woody vegetation: a case study from south-western Burkina Faso. Agrofor Syst 70(2):157–167Google Scholar
  57. Rawat JS, Banerjee SP (1998) The influence of salinity on growth, biomass production and photosynthesis of Eucalyptus camaldulensis Dehnh. and Dalbergia sissoo Roxb. seedlings. Plant Soil 205(2):163–169Google Scholar
  58. Reenberg A (2013) Insistent dryland narratives: portraits of knowledge about human–environmental interactions in Sahelian environment policy documents. West Afr J Appl Ecol 20(1):97–111Google Scholar
  59. Ribot JC (1999) Decentralisation, participation and accountability in Sahelian forestry: legal instruments of political-administrative control. Africa 69(01):23–65PubMedGoogle Scholar
  60. Russell D, Asare RA, Brosius JP, Witter RC, Welch-Devine ML, Spainhower K, Barr R (2010) People, trees, and parks: is agroforestry in or out? J Sustain For 29(2–4):451–476Google Scholar
  61. Sadio S (1991) Pédogenèse et potentialités forestières des sols sulfatés acides salés des tannes du Sine Saloum, Sénégal (Doctoral dissertation, Sadio)Google Scholar
  62. Sadio S, van Mensvoort MEF (1993) Saline acid sulphate soils in Senegal. In: Selected papers of the Ho Chi Minh City symposium on acid sulphate soils, vol 53. ILRI publication, pp 89–93Google Scholar
  63. Sambou B (2004) Evaluation de l’état, de la dynamique et des tendances évolutives de la flore et de la végétation ligneuse dans les domaines soudanien et sub-guinéen au Sénégal. Doctorat d’Etat, Université Cheikh Anta Diop de Dakar (UCAD), DakarGoogle Scholar
  64. Sambou B, Ba AT, Mbow C, Goudiaby A (2008) Studies of the woody vegetation of the Welor forest reserve (Senegal) for sustainable use. West Afr J Appl Ecol 13(1):67–76Google Scholar
  65. Sambou A, Ndour B, Cheng S, Senghor E (2010) Ligneous species tolerance in acid sulphated and saline soils of sine saloum: case of rural community of Djilass and Loul Secene. J Sustain Dev 3(2):174Google Scholar
  66. Sambou A, Theilade I, Fensholt R, Ræbild A (2016) Decline of woody vegetation in a saline landscape in the Groundnut Basin, Senegal. Reg Environ Change 16(6):1765–1777Google Scholar
  67. Shackleton CM (2000) Comparison of plant diversity in protected and communal lands in the Bushbuckridge lowveld savanna, South Africa. Biol Conserv 94(3):273–285Google Scholar
  68. Sun D, Dickinson GR (1995) Salinity effects on tree growth, root distribution and transpiration of Casuarina cunninghamiana and Eucalyptus camaldulensis planted on a saline site in tropical north Australia. For Ecol Manage 77(1):127–138Google Scholar
  69. Tappan GG, Sall M, Wood EC, Cushing M (2004) Ecoregions and land cover trends in Senegal. J Arid Environ 59(3):427–462Google Scholar
  70. United Nations Development Programme (UNDP) (2007) Groundnut basin soil management and regeneration, p 81Google Scholar
  71. Vermeulen SJ (1996) Cutting of trees by local residents in a communal area and an adjacent state forest in Zimbabwe. For Ecol Manage 81(1):101–111Google Scholar
  72. Wezel A, Lykke AM (2006) Woody vegetation change in Sahelian West Africa: evidence from local knowledge. Environ Dev Sustain 8(4):553–567Google Scholar
  73. World Resources Institute (WRI) (2008) WORLD RESOURCES 2008: Roots of resilience—growing the wealth of the poor. Washington, DCGoogle Scholar

Copyright information

© Northeast Forestry University and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Antoine Sambou
    • 1
  • Bienvenu Sambou
    • 2
  • Anders Ræbild
    • 1
  1. 1.Department of Geosciences and Natural Resource Management, Faculty of ScienceUniversity of CopenhagenCopenhagenDenmark
  2. 2.Institut des Sciences de l’Environnement (ISE), Faculté des Sciences et TechniqueUniversité Cheikh Anta Diop (UCAD)DakarSenegal

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