Agroforestry Systems

, Volume 90, Issue 4, pp 591–605 | Cite as

Influence of the landscape context on stand structure and spatial patterns of the doum palm (Hyphaene thebaica Mart.) in the Republic of Benin (West Africa)

  • Rodrigue Idohou
  • Achille Ephrem Assogbadjo
  • Fortuné Azihou
  • Romain Glèlè Kakaï
  • Aristide Adomou
Article

Abstract

Hyphaene thebaica Mart. (doum palm) is an agroforestry tree with high ecological and economic value, but currently its populations are harvested excessively, which is likely to increase in the future. This study assessed the current status of this species with regard to increasing landscape modification and human pressure in Benin. We compared the structure of adult palms in farmlands to those within the Biosphere Reserve of Pendjari (BRP). In addition, spatial patterns and sex ratio of the species were compared between both land use types. Results showed that mean diameter (adult palms) and density (adult palms and seedlings) were significantly higher (P < 0.001) in BRP than in farmlands. However, no significant differences were noticed for doum palm height and density of juveniles (P > 0.05). The pair correlation function showed globally a random pattern for all palm life stages, albeit with a weak aggregation in farmlands. In the BRP, a strong aggregated pattern is observed for seedlings, whereas all other palm life stages showed globally a random pattern. Moreover, no spatial association was observed within palm life stages and between palm life stages and other tree species, but did exist between females and seedlings in the BRP. The sex ratio did not depart from 0.5 in both land use types. We conclude that in spite of the land use difference, the doum palm species is still well preserved. However, rapid land-use intensifications may lead to increasing pressure on the species populations in the future.

Keywords

Conservation Distribution Hyphaene thebaica Point pattern analysis Sex-ratio 

References

  1. Azihou AF (2013) Ecology of isolated trees in tropical savannas: modelling of plant species distribution and colonization of new habitats through long-distance dispersal and facilitation. PhD thesis. University of Abomey-Calavi, Republic of Benin, 184 pGoogle Scholar
  2. Baddeley A, Turner R (2005) Spatstat: an R package for analyzing spatial point patterns. J Stat Softw 12:1–42CrossRefGoogle Scholar
  3. Barot S, Gignoux J (2003) Neighbourhood analysis in the savanna palm Borassus aethiopum: interplay of intraspecific competition and soil patchiness. J Veg Sci 14:79–88Google Scholar
  4. Barot S, Gignoux J, Menaut JC (1999) Demography of a savanna adult palm: predictions from comprehensive spatial pattern analyses. Ecology 80:1987–2005CrossRefGoogle Scholar
  5. Barot S, Gignoux J, Vuattoux R, Legendre S (2000) Demography of a savanna adult palm in Ivory Coast (Lamto): population persistence and life-history. J Trop Ecol 16:637–655CrossRefGoogle Scholar
  6. Bhagwat SA, Willis KJ, Birks HJB, Whittaker RJ (2008) Agroforestry: a refuge for tropical biodiversity? Trends Ecol Evol 23:261–267CrossRefPubMedGoogle Scholar
  7. Boll T, Svenning JC, Vormisto J, Normand S, Grandez C, Balslev H (2005) Spatial distribution and environmental preferences of the piassaba palm Aphandra natalia (Arecaceae) along the Pastaza and Urituyacu rivers in Peru. For Ecol Manag 213:175–183CrossRefGoogle Scholar
  8. Condit R, Sukumar R, Hubbell SP, Foster RB (1998) Predicting population trends from size distributions: a direct test in a tropical tree community. Am Nat 152:495–509CrossRefPubMedGoogle Scholar
  9. Condit R, Watts K, Bohlman SA, Perez R, Foster RB, Hubbell SP (2000) Quantifying the deciduousness of tropical forest canopies under varying climates. J Veg Sci 11:649–658CrossRefGoogle Scholar
  10. Dawson W, Burslem DF, Hulme PE (2009) The suitability of weed risk assessment as a conservation tool to identify invasive plant threats in East African rainforests. Biol Conserv 142:1018–1024CrossRefGoogle Scholar
  11. Diggle P, Ribeiro PJ (2007) Model-based geostatistics. Lancaster University, LancasterGoogle Scholar
  12. Djossa BA, Fahr J, Wiegand T, Ayihouénou B, Kalko E, Sinsin B (2008) Land use impact on Vitellaria paradoxa CF Gaerten. stand structure and distribution patterns: a comparison of Biosphere Reserve of Pendjari in Atacora district in Benin. Agrofor Syst 72:205–220CrossRefGoogle Scholar
  13. Fanshawe D (1966) The Doum palm-Hyphaene thebaica (Del.) Mart East African. Agric For J 32:108–116Google Scholar
  14. Gaoue OG, Ticktin T (2008) Impacts of bark and foliage harvest on Khaya senegalensis (Meliaceae) reproductive performance in Benin. J App Ecol 45:34–40CrossRefGoogle Scholar
  15. Gaoue OG, Ticktin T (2009) Fulani Knowledge of the Ecological Impacts of Khaya senegalensis (Meliaceae) Foliage Harvest in Benin and its Implications for Sustainable Harvest. Econ Bot 63:256–270CrossRefGoogle Scholar
  16. Gelfand AE, Diggle P, Guttorp P, Fuentes M (2010) Handbook of spatial statistics. CRC Press/Taylor and Francis Group, Boca RatonCrossRefGoogle Scholar
  17. Gibson DJ, Menges ES (1994) Population structure and spatial pattern in the dioecious shrub Ceratiola ericoides. J Veg Sci 5:337–346CrossRefGoogle Scholar
  18. Giffard PL (1966) Le palmier doum (Hyphaene thebaica Mart.). Bois For Trop 106:3–11Google Scholar
  19. Glèlè Kakaï R, Akpona T, Assogbadjo AE, Gaoué OG, Chakeredza S, Gnanglè PC, Mensah GA, Sinsin B (2011) Ecological adaptation of the shea butter tree (Vitellaria paradoxa CF Gaertn.) along climatic gradient in Bénin. West Africa. Afr J Ecol 49:440–449CrossRefGoogle Scholar
  20. Goreaud F, Pélissier R (2003) Avoiding misinterpretation of biotic interactions with the intertype K12-function: population independence vs. random labelling hypotheses. J Veg Sci 14:681–692Google Scholar
  21. Haarmeyer DH, Schumann K, Bernhardt-Römermann M, Wittig R, Thiombiano A, Hahn K (2013) Human impact on population structure and fruit production of the socio-economically important tree Lannea microcarpa in Burkina Faso. Agrofor Syst 87:1363–1375CrossRefGoogle Scholar
  22. Hansen AJ, DeFries R (2007) Ecological mechanisms linking protected areas to surrounding lands. Ecol Appl 17:974–988CrossRefPubMedGoogle Scholar
  23. Harms KE, Condit R, Hubbell SP, Foster RB (2001) Habitat associations of trees and shrubs in a 50-ha Neotropical forest plot. J Ecol 89:947–959CrossRefGoogle Scholar
  24. Haugo RD, Hall SA, Gray EM, Gonzalez P, Bakker JD (2010) Influences of climate, fire, grazing, and logging on woody species composition along an elevation gradient in the eastern Cascades, Washington. For Ecol Manag 260:2204–2213CrossRefGoogle Scholar
  25. Hsu B, Coupar IM, Ng K (2006) Antioxidant activity of hot water extract from the fruit of the Doum palm, Hyphaene thebaica. Food Chem 98:317–328CrossRefGoogle Scholar
  26. Hubbell SP (2001) The unified neutral theory of biodiversity and biogeography (MPB-32), vol 32. Princeton University Press, PrincetonGoogle Scholar
  27. INSAE (2015) RGPH4: que retenir des effectifs de population en 2013? Direction des études démographiques. Ministère du Développement de l’Analyse Economique et de La Prospective. Cotonou, République du BéninGoogle Scholar
  28. Isaac ME, Dawoe E, Sieciechowicz K (2009) Assessing local knowledge use in agroforestry management with cognitive maps. Environ Manag 43:1321–1329CrossRefGoogle Scholar
  29. Jahiel M (1993) Le palmier doum: Hyphaene thebaica (L.) (Mart.). Le Flamboyant 28:4–10Google Scholar
  30. Jorgensen SE, Fath B (2008) Encyclopedia of ecology, five-volume set: online version, vol 1. Newnes, OxfordGoogle Scholar
  31. Kahn F, Luxereau A (2008) Doum palm habit and leaf collecting practices in Niger. Palms 52:23–29Google Scholar
  32. Kelly BA, Bouvet J-M, Picard N (2004) Size class distribution and spatial pattern of Vitellaria paradoxa in relation to farmers’ practices in Mali. Agrofor Syst 60:3–11CrossRefGoogle Scholar
  33. Kiringe JW, Okello MM, Ekajul SW (2007) Managers’ perceptions of threats to the protected areas of Kenya: prioritization for effective management. Oryx 41:314–321CrossRefGoogle Scholar
  34. Krebs CJ (1999) Ecological methodology, vol 620. Benjamin Cummings, Menlo ParkGoogle Scholar
  35. Laris P, Wardell DA (2006) Good, bad or ‘necessary evil’? Reinterpreting the colonial burning experiments in the savanna landscapes of West Africa. Geogr J 172:271–290CrossRefGoogle Scholar
  36. Law R, Illian J, Burslem DF, Gratzer G, Gunatilleke C, Gunatilleke I (2009) Ecological information from spatial patterns of plants: insights from point process theory. J Ecol 97:616–628CrossRefGoogle Scholar
  37. Leakey R, Pate K, Lombard C (2005) Domestication potential of Marula (Sclerocarya birrea subsp caffra) in South Africa and Namibia: 2. Phenotypic variation in nut and kernel traits. Agrofor Syst 64:37–49CrossRefGoogle Scholar
  38. Lejeune P (2001) Arpent 2.0, logiciel de saisie de données d’arpentage – Guide d’utilisation. FUSAGx. Note Tech For 5:1–12Google Scholar
  39. Lykke AM (1998) Assessment of species composition change in savanna vegetation by means of woody plants’ size class distributions and local information. Biodivers Conserv 7:1261–1275CrossRefGoogle Scholar
  40. Montesinos D, Verdú M, García-Fayos P (2007) Moms are better nurses than dads: gender biased self-facilitation in a dioecious Juniperus tree. J Veg Sci 18:271–280CrossRefGoogle Scholar
  41. Moussa H, Margolis HA, Dubé P-A, Odongo J (1998) Factors affecting the germination of doum palm (Hyphaene thebaica Mart.) seeds from the semi-arid zone of Niger, West Africa. For Ecol Manag 104:27–41CrossRefGoogle Scholar
  42. Oksanen J, Kindt R, Legendre P, O’Hara B, Stevens MHH, Oksanen MJ, Suggests M (2007) The vegan package Community ecology package, pp 631-637Google Scholar
  43. Ouédraogo A, Glèlè Kakaï R, Thiombiano A (2013) Population structure of the widespread species, Anogeissus leiocarpa (DC.) Guill. & Perr. across the climatic gradient in West Africa semi-arid area. S Afr J Bot 88:286–295CrossRefGoogle Scholar
  44. Pannell JR (2002) The evolution and maintenance of androdioecy. Annu Rev Ecol Syst 33:397–425CrossRefGoogle Scholar
  45. R Core Team (2013) R: a language and environment for statistical computing. R. foundation for statistical computing, ViennaGoogle Scholar
  46. Ripley BD (1981) Spatial statistics. Wiley, New YorkGoogle Scholar
  47. Sapir Y, Mazer S, Holzapfel C, Erik J, Brian F (2008) Sex ratio. Encyclopedia of ecology I. Elsevier, Amsterdam, pp 3243–3248CrossRefGoogle Scholar
  48. Schumann K, Wittig R, Thiombiano A, Becker U, Hahn K (2011) Impact of land-use type and harvesting on population structure of a non-timber forest product-providing tree in a semi-arid savanna, West Africa. Biol Conserv 144:2369–2376CrossRefGoogle Scholar
  49. Sinsin B, Matig OE, Assogbadjo AE, Gaoue OG, Sinadouwirou T (2004) Dendrometric characteristics as indicators of pressure of Afzelia africana Sm. dynamic changes in trees found in different climatic zones of Benin. Biodivers Conserv 13:1555–1570CrossRefGoogle Scholar
  50. Sterner RW, Ribic CA, Schatz GE (1986) Testing for life historical changes in spatial patterns of four tropical tree species. J Ecol 74:621–633CrossRefGoogle Scholar
  51. Stoyan D, Stoyan H (1996) Estimating pair correlation functions of planar cluster processes. Biometrical J 38:259–271CrossRefGoogle Scholar
  52. Teklehaimanot Z (2003) Improved management of agroforestry parkland systems in Sub-Saharan Africa. School of Agricultural and Forest Sciences, University of Wales, BangorGoogle Scholar
  53. Turner MG (1989) Landscape ecology: the effect of pattern on process. Annu Rev Ecol Syst 20:171–197CrossRefGoogle Scholar
  54. Vormisto J, Svenning JC, Hall P, Balslev H (2004) Diversity and dominance in palm (Arecaceae) communities in terra firme forests in the western Amazon basin. J Ecol 92:577–588CrossRefGoogle Scholar
  55. Zar JH (1999) Biostatistical analysis. Pearson Education, IndiaGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  • Rodrigue Idohou
    • 1
  • Achille Ephrem Assogbadjo
    • 2
  • Fortuné Azihou
    • 2
  • Romain Glèlè Kakaï
    • 1
  • Aristide Adomou
    • 3
  1. 1.Laboratory of Biomathematics and Forest Estimations, Faculty of Agronomic SciencesUniversity of Abomey-CalaviCotonouBenin
  2. 2.Laboratory of Applied Ecology, Faculty of Agronomic SciencesUniversity of Abomey-CalaviCotonouBenin
  3. 3.National HerbariumUniversity of Abomey-CalaviCotonouBenin

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