Performance Trade‐offs Driven by Morphological Plasticity Contribute to Habitat Specialization of Bornean Tree Species

Growth‐survival trade‐offs play an important role in niche differentiation of tropical tree species in relation to light‐gradient partitioning. However, the mechanisms that determine differential species performance in response to light and soil resource availability are poorly understood. To examine responses to light and soil nutrient availability, we grew seedlings of five tropical tree species for 12 mo at < 2 and 18 percent full sunlight and in two soil types representing natural contrasts in nutrient availability within a lowland dipterocarp forest in North Borneo. We chose two specialists of nutrient‐rich and nutrient‐poor soils, respectively, and one habitat generalist. Across all species, growth was higher in high than low light and on more nutrient rich soil. Although species differed in growth rates, the ranking of species, in terms of growth, was consistent across the four treatments. Nutrient‐rich soils improved seedling survival and increased growth of three species even under low light. Slower‐growing species increased root allocation and reduced specific leaf area (SLA) and leaf area ratio (LAR) in response to decreased nutrient supply. All species increased LAR in response to low light. Maximum growth rates were negatively correlated with survival in the most resource‐limited environment. Nutrient‐poor soil specialists had low maximum growth rates but high survival at low resource availability. Specialists of nutrient‐rich soils, plus the habitat generalist, had the opposite suite of traits. Fitness component trade‐offs may be driven by both light and belowground resource availability. These trade‐offs contribute to differentiation of tropical tree species among habitats defined by edaphic variation.

[1]  L. Poorter,et al.  Carbohydrate storage and light requirements of tropical moist and dry forest tree species. , 2007, Ecology.

[2]  K. Kitajima,et al.  Carbohydrate storage enhances seedling shade and stress tolerance in a neotropical forest , 2007 .

[3]  Stephen P. Hubbell,et al.  Soil nutrients influence spatial distributions of tropical tree species , 2007, Proceedings of the National Academy of Sciences.

[4]  D. Burslem,et al.  Nutrient fluxes via litterfall and leaf litter decomposition vary across a gradient of soil nutrient supply in a lowland tropical rain forest , 2006, Plant and Soil.

[5]  Differential seedling growth response to soil resource availability among nine neotropical tree species , 2006, Journal of Tropical Ecology.

[6]  M. Eichhorn,et al.  Seedling species determines rates of leaf herbivory in a Malaysian rain forest , 2006, Journal of Tropical Ecology.

[7]  M Henry H Stevens,et al.  The growth-defense trade-off and habitat specialization by plants in Amazonian forests. , 2006, Ecology.

[8]  L. Poorter,et al.  Leaf Traits Determine the Growth‐Survival Trade‐Off across Rain Forest Tree Species , 2006, The American Naturalist.

[9]  D. Burslem,et al.  Liana habitat associations and community structure in a Bornean lowland tropical forest , 2006, Plant Ecology.

[10]  G. Paoli,et al.  Soil nutrients and beta diversity in the Bornean Dipterocarpaceae: evidence for niche partitioning by tropical rain forest trees , 2006 .

[11]  D. Burslem,et al.  EDAPHIC SPECIALIZATION IN TROPICAL TREES: PHYSIOLOGICAL CORRELATES AND RESPONSES TO RECIPROCAL TRANSPLANTATION , 2005 .

[12]  D. M. Newbery,et al.  Evidence of species-specific neighborhood effects in the dipterocarpaceae of a Bornean rain forest , 2005 .

[13]  D. Bonal,et al.  PERFORMANCE TRADE-OFFS AMONG TROPICAL TREE SEEDLINGS IN CONTRASTING MICROHABITATS , 2005 .

[14]  David F. R. P. Burslem,et al.  Biotic interactions in the tropics: their role in the maintenance of species diversity. , 2005 .

[15]  D. Burslem,et al.  Biotic Interactions in the Tropics: Role of life-history trade-offs in the equalization and differentiation of tropical tree species , 2005 .

[16]  M. Ashton,et al.  Soil‐related habitat specialization in dipterocarp rain forest tree species in Borneo , 2004 .

[17]  K. Kitajima.  Relative importance of photosynthetic traits and allocation patterns as correlates of seedling shade tolerance of 13 tropical trees , 1994, Oecologia.

[18]  Growth consequences of plasticity of plant traits in response to light conditions , 1989, Oecologia.

[19]  P. Reich,et al.  The Evolution of Plant Functional Variation: Traits, Spectra, and Strategies , 2003, International Journal of Plant Sciences.

[20]  Crossovers in seedling relative growth rates between low and high irradiance: analyses and ecological potential , 2003 .

[21]  B. Bolker,et al.  Testing performance rank reversals among coexisting species: crossover point irradiance analysis , 2003 .

[22]  P. Grubb,et al.  Growth and mortality in high and low light: trends among 15 shade‐tolerant tropical rain forest tree species , 2003 .

[23]  L. Poorter.  Resource capture and use by tropical forest tree seedlings and their consequences for competition , 2003 .

[24]  M. Westoby,et al.  Leaves at low versus high rainfall: coordination of structure, lifespan and physiology. , 2002, The New phytologist.

[25]  K. Kitajima.  Do shade‐tolerant tropical tree seedlings depend longer on seed reserves? Functional growth analysis of three Bignoniaceae species , 2002 .

[26]  P. Reich,et al.  Convergence towards higher leaf mass per area in dry and nutrient‐poor habitats has different consequences for leaf life span , 2002 .

[27]  D. Metcalfe,et al.  Soil dilution as a surrogate for root competition: effects on growth of seedlings of Australian tropical rainforest trees , 2002 .

[28]  M. Press,et al.  The influence of nutrients on growth and photosynthesis of seedlings of two rainforest dipterocarp species. , 2002, Functional plant biology : FPB.

[29]  R. Chazdon,et al.  Light gradient partitioning by tropical tree seedlings in the absence of canopy gaps , 2002, Oecologia.

[30]  P. Reich.  Root–Shoot Relations: Optimality in Acclimation and Adaptation or the ‘‘Emperor’s New Clothes’’? , 2002 .

[31]  Stephen P. Hubbell,et al.  Habitat associations of trees and shrubs in a 50‐ha neotropical forest plot , 2001 .

[32]  D. Lawrence.  Nitrogen and phosphorus enhance growth and luxury consumption of four secondary forest tree species in Borneo , 2001, Journal of Tropical Ecology.

[33]  P. Reich,et al.  Strategy shifts in leaf physiology, structure and nutrient content between species of high‐ and low‐rainfall and high‐ and low‐nutrient habitats , 2001 .

[34]  L. Sack,et al.  Why do species of woody seedlings change rank in relative growth rate between low and high irradiance , 2001 .

[35]  S. Davies.  TREE MORTALITY AND GROWTH IN 11 SYMPATRIC MACARANGA SPECIES IN BORNEO , 2001 .

[36]  Robert W. Pearcy,et al.  Plastic Phenotypic Response to Light of 16 Congeneric Shrubs From a Panamanian Rainforest , 2000 .

[37]  D. Coomes,et al.  IMPACTS OF ROOT COMPETITION IN FORESTS AND WOODLANDS: A THEORETICAL FRAMEWORK AND REVIEW OF EXPERIMENTS , 2000 .

[38]  Lourens Poorter,et al.  Growth responses of 15 rain‐forest tree species to a light gradient: the relative importance of morphological and physiological traits , 1999 .

[39]  F. S. Chapin,et al.  The Mineral Nutrition of Wild Plants Revisited: A Re-evaluation of Processes and Patterns , 1999 .

[40]  E. Rincón,et al.  Foraging for nutrients, responses to changes in light, and competition in tropical deciduous tree seedlings , 1998, Oecologia.

[41]  A. Ellison,et al.  Treefall gap size effects on above‐ and below‐ground processes in a tropical wet forest , 1998 .

[42]  Hendrik Poorter,et al.  Inherent variation in plant growth : physiological mechanisms and ecological consequences , 1998 .

[43]  L. Poorter,et al.  Growth and carbon partitioning of tropical tree seedlings in contrasting light environments. , 1998 .

[44]  P. Reich,et al.  From tropics to tundra: global convergence in plant functioning. , 1997, Proceedings of the National Academy of Sciences of the United States of America.

[45]  Photosynthetic Induction and Stomatal Oscillations in Relation to the Light Environment of Two Dipterocarp Rain Forest Tree Species , 1997 .

[46]  D. Burslem,et al.  RESPONSES TO NUTRIENT ADDITION AMONG SEEDLINGS OF EIGHT CLOSELY RELATED SPECIES OF SHOREA IN SRI LANKA , 1997 .

[47]  M. Press,et al.  PHOTOSYNTHESIS IN RELATION TO GROWTH AND SEEDLING ECOLOGY OF TWO DIPTEROCARP RAIN FOREST TREE SPECIES , 1996 .

[48]  P. Reich,et al.  Needle respiration and nitrogen concentration in Scots Pine populations from a broad latitudinal range : a common garden test with field-grown trees , 1996 .

[49]  D. Burslem,et al.  Responses to simulated drought and elevated nutrient supply among shade-tolerant tree seedlings of lowland tropical forest in Singapore , 1996 .

[50]  S. Ollinger,et al.  Biomass allocation and multiple resource limitation in tree seedlings , 1996 .

[51]  E. Veenendaal,et al.  Responses of West African Forest Tree Seedlings to Irradiance and Soil Fertility , 1996 .

[52]  H. Lambers,et al.  Response to phosphorus supply of tropical tree seedlings: a comparison between a pioneer species Tapirira obtusa and a climax species Lecythis corrugata. , 1996, The New phytologist.

[53]  E. Rincón,et al.  Nutrient availability and growth rate of 34 woody species from a tropical deciduous forest in Mexico , 1995 .

[54]  D. Burslem,et al.  Responses to Nutrient Addition among Shade-Tolerant Tree Seedlings of Lowland Tropical Rain Forest in Singapore , 1995 .

[55]  R. Latham.  Co‐Occurring Tree Species Change Rank in Seedling Performance with Resources Varied Experimentally , 1992 .

[56]  W. Thompson,et al.  Photosynthetic Response to Light and Nutrients in Sun-Tolerant and Shade-Tolerant Rainforest Trees. I. Growth, Leaf Anatomy and Nutrient Content. , 1992 .

[57]  Hendrik Poorter,et al.  Inherent Variation in Growth Rate Between Higher Plants: A Search for Physiological Causes and Ecological Consequences , 1992 .

[58]  F. Bongers,et al.  Acclimation of seedlings of three Mexican tropical rain forest tree species to a change in light availability , 1991, Journal of Tropical Ecology.

[59]  I. Turner.  Tree seedling growth and survival in a Malaysian rain forest. , 1990 .

[60]  R. Hunt.  Plant Growth Curves: The Functional Approach to Plant Growth Analysis , 1983 .

[61]  G. Evans,et al.  The quantitative analysis of plant growth , 1972 .

[62]  P. Burgess.  Timbers of Sabah. , 1966 .

[63]  W. Meijer,et al.  Dipterocarps of Sabah (North Borneo). , 1964 .