Abstract
In groves of ectomycorrhizal caesalpiniaceous species in the Atlantic coastal forest of Central Africa the dominant tree Microberlinia bisulcata, which is shade-intolerant as a seedling but highly light-responding as a sapling, shows very limited regeneration. M. bisulcata saplings were mapped in an 82.5-ha plot at Korup and found to be located significantly far (>40 m) away from adults, a result confirmed by direct testing in a second 56-ha plot. Sapling growth over 6 years, the distribution of newly emerging seedlings around adults, recruitment of saplings in a large opening and the outward extent of seedlings at the grove edge were also investigated. Two processes appear to have been operating: (1) a very strong and consistent restriction of the very numerous seedlings establishing after masting close to adults, and (2) a strong but highly spatially variable promotion of distant survivors by increased light from the deaths of large trees of species other than M. bisulcata (which itself has very low mortality rate). This leads to an apparent escape-from-adults effect. To maintain saplings in the shade between multiple short periods of release ectomycorrhizal connections to other co-occurring caesalp species may enable a rachet-type mechanism. The recorded sapling dynamics currently contribute an essential part of the long-term cycling of the groves. M. bisulcata is an interesting example of an important group of tropical trees, particularly in Africa, which are both highly light-demanding when young yet capable also of forming very large forest emergents. To more comprehensively explain tropical tree responses, the case is made for adding a new dimension to the trade-off concept of early tree light-response versus adult longevity.
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References
Alexander IJ (1989) Systematics and ecology of ectomycorrhizal legumes. Monogr Syst Bot Missouri Bot Gard 29:607–624
Alexandre DY (1989) Dynamique de la régénération naturelle en forêt dense de Côte d’Ivoire. Editions de l’ORSTOM, Paris
Aubréville A (1938) La forêt coloniale: les forêts de l’Afrique occidentale française: Annales de l’Académie des Sciences Coloniales, v. IX. Société d’Editions Géographiques, Maritimes et Coloniales, Paris
Becker P, Lee LW, Rothman ED, Hamilton WD (1985) Seed predation and the coexistence of tree species: Hubbell’s models revisited. Oikos 44:382–390
Canham CD (1989) Different responses to gaps among shade-tolerant tree species. Ecology 70:548–550
Carson WP, Anderson JT, Leigh EG, Schnitzer SA (2008) Challenges associated with testing and falsifying the Janzen–Connell hypothesis: a review and critique. In: Carson WP, Schnitzer SA (eds) Tropical forest community ecology. Wiley-Blackwell, Oxford, UK, pp 210–241
Chave J, Muller-Landau HC, Baker TR, Easdale TA, ter Steege H, Webb CO (2006) Regional and phylogenetic variation of wood density across 2456 neotropical tree species. Ecol Appl 16:2356–2367
Clark DA, Clark DB (1984) Spacing dynamics of a tropical rain forest tree: evaluation of the Janzen–Connell model. Am Nat 124:769–788
Clark DB, Clark DA (1987) Population ecology and microhabitat distribution of Dipteryx panamensis, a neotropical rain forest emergent tree. Biotropica 19:236–244
Clark DB, Clark DA (1991) The impact of physical damage on canopy tree regeneration in tropical rain forest. J Ecol 79:447–457
Clark DA, Clark DB (1992) Life-history diversity of canopy and emergent trees in a neotropical rain-forest. Ecol Monogr 62:315–344
Connell JH (1971) On the role of natural enemies in preventing competitive exclusion in some marine mammals and rain forest trees. In: Boer PJ, Gradwell G (eds) Dynamics of populations. PUDOC, Wageningen, Netherlands, pp 298–310
Connell JH, Lowman MD (1989) Low-diversity tropical rain forests: some possible mechanisms for their existence. Am Nat 134:88–119
Connell JH, Tracey JG, Webb LJ (1984) Compensatory recruitment, growth, and mortality as factors maintaining rain forest tree diversity. Ecol Monogr 54:141–164
Dalling JW, Winter K, Nason JD, Hubbell SP, Murawski DA, Hamrick JL (2001) The unusual life history of Alseis blackiana: a shade-persistent pioneer tree? Ecology 82:933–945
Davies SJ (2001) Tree mortality and growth in 11 sympatric Macaranga species in Borneo. Ecology 82:920–932
Finegan B, Camacho M, Zamora N (1999) Diameter increment patterns among 106 tree species in a logged and silviculturally related Costa Rican rain forest. For Ecol Manag 121:159–176
Foggie A (1960) Natural regeneration in the humid tropical forest. Carib For 21:73–81
Gartlan JS, Newbery DM, Thomas DW, Waterman PG (1986) The influence of topography and soil phosphorus on the vegetation of Korup Forest Reserve, Cameroun. Vegetatio 65:131–148
Gérard P (1960) Etude écologique de la forêt dense à Gilbertiodendron dewevrei dans la région de l’Uele. Publ Inst Natl Etud Agron Cong Belg Série Sci No 87:1–159
Gilbert B, Wright SJ, Muller-Landau HC, Kitajima K, Hernandez A (2006) Life history trade-offs in tropical trees and lianas. Ecology 87:1281–1288
Green JJ, Newbery DM (2001a) Light and seed size affect establishment of grove-forming ectomycorrhizal rain forest tree species. New Phytol 151:271–289
Green JJ, Newbery DM (2001b) Shade and leaf loss affect establishment of grove-forming ectomycorrhizal rain forest tree species. New Phytol 151:291–309
Greig-Smith P (1983) Quantitative plant ecology. Blackwell, Oxford
Grogan J, Landis RM, Ashton MS, Galvao J (2005) Growth response by big-leaf mahogany (Swietenia macrophylla) advance seedling regeneration to overhead canopy release in southeast Para, Brazil. For Ecol Manag 204:399–412
Gullison RE, Panfil SN, Strouse JJ, Hubbell SP (1996) Ecology and management of mahogany (Swietenia macrophylla King) in the Chimanes Forest, Beni, Bolivia. Bot J Linn Soc 122:9–34
Hallé F, Oldeman RAA, Tomlinson PB (1978) Tropical trees and forests. Springer, Berlin, Germany
Hart TB (1995) Seed, seedling and sub-canopy survival in monodominant and mixed forests of the Ituri Forest, Africa. J Trop Ecol 11:443–459
Hart TB, Hart JA, Murphy PG (1989) Monodominant and species-rich forests of the humid tropics: causes for their co-occurrence. Am Nat 133:613–633
Hawthorne WD (1996) Holes and sums of parts in Ghanaian forest: regeneration, scale and sustainable use. Proc R Soc Edinb B 104:75–176
Jans L, Poorter L, Rompaey RSAR, Bongers F (1993) Gaps and forest zones in tropical moist forest in Ivory Coast. Biotropica 25:258–269
Janzen DH (1970) Herbivores and the number of tree species in tropical forests. Am Nat 104:501–528
Jones EW (1950) Some aspects of natural regeneration in the Benin rain forest. Emp For Rev 29:108–124
Jones EW (1956) Ecological studies on the rain forest of southern Nigeria IV (continued). The plateau forest of the Okomu Forest Reserve. J Ecol 44:83–117
King DA, Davies SJ, Tan S, Noor NSM (2006) The role of wood density and stem support costs in the growth and mortality of tropical trees. J Ecol 94:670–680
Letouzey R (1968) Etude phytogéographique du Cameroun. P. LeChevalier, Paris
Letouzey R (1985) Notice de la carte phytogéographique du Cameroun Au 1:500 000. Institut de la Carte Internationale de la Végétation, Toulouse
Lusk CH (1999) Long-lived light-demanding emergents in southern temperate forests: the case of Weinmannia trichosperma (Cunoniaceae) in Chile. Plant Ecol 140:111–115
Makana JR, Thomas SC (2005) Effects of light gaps and litter removal on the seedling performance of six African timber species. Biotropica 37:227–237
McGuire KL (2007) Common ectomycorrhizal networks may maintain monodominance in a tropical rain forest. Ecology 88:567–574
McIntosh RP (1987) Pluralism in ecology. Ann Rev Ecol Syst 18:321–341
Moravie M-A, Pascal J-P, Auger P (1997) Investigating canopy regeneration processes through individual-based spatial models: application to a tropical rain forest. Ecol Model 104:241–260
Muller-Landau HC (2004) Interspecific and inter-site variation in wood specific gravity of tropical trees. Biotropica 36:20–32
Newbery DM, Gartlan JS (1996) Structural analysis of the rain forest at Korup and Douala Edea, Cameroon. Proc R Soc Edinb B 104:177–224
Newbery DM, Alexander IJ, Thomas DW, Gartlan JS (1988) Ectomycorrhizal rain forest legumes and soil phosphorus in Korup National Park, Cameroon. New Phytol 109:433–450
Newbery DM, Alexander IJ, Rother JA (1997) Phosphorus dynamics in a lowland African rain forest: the influence of ectomycorrhizal trees. Ecol Monogr 67:367–409
Newbery DM, Songwe NC, Chuyong GB (1998) Phenology and dynamics of an African rain forest at Korup, Cameroon. In: Newbery DM, Prins HHT, Brown ND (eds) Dynamics of tropical communities. Blackwell Science, Oxford, UK, pp 267–308
Newbery DM, Alexander IJ, Rother JA (2000) Does proximity to conspecific adults influence the establishment of ectomycorrhizal tree species in an African rain forest? New Phytol 147:401–409
Newbery DM, van der Burgt XM, Moravie M-A (2004) Structure and inferred dynamics of a large grove of Microberlinia bisulcata trees in central African rain forest: the possible role of periods of multiple disturbance events. J Trop Ecol 20:131–143
Newbery DM, Chuyong GB, Zimmermann L (2006a) Mast fruiting of large ectomycorrhizal African rain forest trees: importance of dry season intensity, and the resource limitation hypothesis. New Phytol 170:561–579
Newbery DM, Chuyong GB, Zimmermann L, Praz C (2006b) Seedling survival and growth of three ectomycorrhizal caesalpiniaceous tree species in a Central African rain forest. J Trop Ecol 22:499–511
Newbery DM, Schwan S, Chuyong GB, van der Burgt XM (2009) Buttress form of the central African rain forest tree Microberlinia bisulcata, and its possible role in nutrient acquisition. Trees-Struct Funct 23:219–234
Oldeman RAA (1989) Biological implications of leguminous tree architecture. Advances in legume biology. Monogr Syst Bot Missouri Bot Gard 29:17–34
Oldeman RAA, van Dijk J (1991) Diagnosis of the temperament of tropical rain forest trees. In: Gomez-Pompa A, Whitmore TC, Hadley M (eds) Rain forest regeneration and management. UNESCO, Paris, pp 21–65
Poorter L, Aerts E (2003) Light environment and tree strategies in a Bolivian tropical moist forest: an evaluation of the light partitioning hypothesis. Plant Ecol 166:295–306
Poorter L, Bongers L, Bongers F (2006) Architecture of 54 moist-forest tree species: traits, trade-offs, and functional groups. Ecology 87:1289–1301
Praz C (2003) Regeneration of a dominant ectomycorrhizal tree species in an African lowland rain forest: the roles of light, density-dependence and distance to adults. M.Sc. thesis, University of Bern, Switzerland
Richards PW (1996) The tropical rain forest. Cambridge University Press, Cambridge, UK
Rollet B (1974) L’architecture des fôrets denses humides semperiventes de plaine. Centre Technique Forestier Tropical, Nogent-sur-Marne, France
Seidler TG, Plotkin JB (2006) Seed dispersal and spatial pattern in tropical trees. PLos Biol 4:2132–2137
Simard SW, Perry DA, Jones MD, Myrold DD, Durall DM, Molina R (1997) Net transfer of carbon between ectomycorrhizal tree species in the field. Nature 388:579–582
Simard SW, Jones MD, Durall DM (2002) Carbon and nutrient fluxes within and between mycorrhizal plants. In: van der Heijden MGA, Sanders I (eds) Mycorrhizal ecology. Springer, Berlin, Germany, pp 33–74
Swaine MD, Whitmore TC (1988) On the definition ecological species groups in tropical rain forest. Vegetatio 75:81–86
Teste FP, Simard SW (2008) Mycorrhizal networks and distance from mature trees alter patterns of competition and facilitation in dry Douglas-fir forests. Oecologia 158:193–203
Torti SD, Coley PD, Kursar TA (2001) Causes and consequences of monodominance in tropical lowland forests. Am Nat 157:141–153
Turner IM (2001) The ecology of trees in the tropical rain forest. Cambridge University Press, Cambridge, UK
van Steenis CGGJ (1958) Rejuvenation as a factor for judging the status of vegetation types: the biological nomad theory. In: Anon (ed) Study of tropical vegetation (Proceedings of the Kandy Symposium). Paris, UNESCO, pp 212–215
White LTJ (2001) The African rain forest. In: Weber W, White LTJ, Vedder A, Naughton-Treves L (eds) African rain forest ecology and conservation. Yale University Press, New Haven, USA, pp 3–29
Whitmore TC (1984) Tropical rain forests of the Far East, 2nd edn. Oxford University Press, Oxford, UK
Whitmore TC (1989) Canopy gaps and the two major groups of forest trees. Ecology 70:536–538
Wright SJ, Muller-Landau HC, Condit R, Hubbell SP (2003) Gap-dependent recruitment, realized vital rates, and size distributions of tropical trees. Ecology 84:3174–3185
Acknowledgements
We thank S. Njibili and C. Okha for field assistance; the Conservator of Korup National Park, A. Kembou, and the Ministries of Forests and Environment (MINEF) and Education, Scientific and Technical Research (MINREST) for permission to undertake the research; and two reviewers for comments. This study was supported by the Swiss National Science Foundation (Grant #3100-066655, 2002–2005 to D.M.N.).
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An erratum to this article can be found at http://dx.doi.org/10.1007/s11258-010-9808-8
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Newbery, D.M., Praz, C.J., van der Burgt, X.M. et al. Recruitment dynamics of the grove-dominant tree Microberlinia bisulcata in African rain forest: extending the light response versus adult longevity trade-off concept. Plant Ecol 206, 151–172 (2010). https://doi.org/10.1007/s11258-009-9631-2
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DOI: https://doi.org/10.1007/s11258-009-9631-2