Responses to nutrient addition among seedlings of eight closely related species of Shorea in Sri Lanka

C V S Gunatilleke, I A U N Gunatilleke, G A D Perera, David Francis Robert Philip Burslem, P M S Ashton, P S Ashton

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

1 Responses to the addition of P and Mg are described for eight species of Shorea section Doona (Dipterocarpaceae) which vary in their adult distribution across a topographic/soils gradient at Sinharaja Forest Reserve, Sri Lanka.

2 All combinations of the two nutrients resulted in increased dry mass yield, seedling height and leaf number after 24 months for seedlings of these species growing in pots of soil taken from a nearby Pinus plantation compared to a control which did not receive nutrients. In the presence of P, dry mass yield, leaf number and lateral root ratio declined in response to increasing Mg. In the presence of Mg, seedling height and stem mass ratio increased in response to increasing P.

3 After 24 months maximum dry mass yield in response to nutrient addition was greater for the four species which occur on more nutrient-rich soils in the held. Maximum percentage increase in dry mass in response to nutrient addition was negatively correlated with mean dry mass of unfertilized seedlings, but the relationship did not discriminate between species according to adult distribution across the catena.

4 There was no relation between seedling root mass ratio (RMR) or phenotypic plasticity in seedling RMR and adult distribution in relation to nutrient supply.

5 In Shorea section Doona, trade-offs between seedling 'responsiveness' and 'tolerance' to nutrient supply, in terms of either growth or dry mass allocation, are not powerful determinants of differences in adult distribution in relation to nutrient supply. Differential dry mass yield in response to nutrient addition was determined by differences in seed size and seedling relative growth rates under the experimental conditions, as well as the degree of response to nutrient addition. Response to nutrient addition may be constrained by seedling characteristics relating to variation in irradiance and water availability.

Original languageEnglish
Pages (from-to)301-311
Number of pages11
JournalJournal of Ecology
Volume85
Issue number3
Publication statusPublished - Jun 1997

Keywords

  • dry mass allocation
  • magnesium
  • nutrients
  • phosphorus
  • Shorea section Doona
  • Sri Lanka
  • tree seedlings
  • tropical rain forest
  • light
  • dipterocarp forest
  • neotropical forest
  • plant-communities
  • growth
  • tree
  • limitation
  • maintenance
  • recruitment

Cite this

Gunatilleke, C. V. S., Gunatilleke, I. A. U. N., Perera, G. A. D., Burslem, D. F. R. P., Ashton, P. M. S., & Ashton, P. S. (1997). Responses to nutrient addition among seedlings of eight closely related species of Shorea in Sri Lanka. Journal of Ecology, 85(3), 301-311.

Responses to nutrient addition among seedlings of eight closely related species of Shorea in Sri Lanka. / Gunatilleke, C V S ; Gunatilleke, I A U N ; Perera, G A D ; Burslem, David Francis Robert Philip; Ashton, P M S ; Ashton, P S .

In: Journal of Ecology, Vol. 85, No. 3, 06.1997, p. 301-311.

Research output: Contribution to journalArticle

Gunatilleke, CVS, Gunatilleke, IAUN, Perera, GAD, Burslem, DFRP, Ashton, PMS & Ashton, PS 1997, 'Responses to nutrient addition among seedlings of eight closely related species of Shorea in Sri Lanka', Journal of Ecology, vol. 85, no. 3, pp. 301-311.
Gunatilleke CVS, Gunatilleke IAUN, Perera GAD, Burslem DFRP, Ashton PMS, Ashton PS. Responses to nutrient addition among seedlings of eight closely related species of Shorea in Sri Lanka. Journal of Ecology. 1997 Jun;85(3):301-311.
Gunatilleke, C V S ; Gunatilleke, I A U N ; Perera, G A D ; Burslem, David Francis Robert Philip ; Ashton, P M S ; Ashton, P S . / Responses to nutrient addition among seedlings of eight closely related species of Shorea in Sri Lanka. In: Journal of Ecology. 1997 ; Vol. 85, No. 3. pp. 301-311.
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abstract = "1 Responses to the addition of P and Mg are described for eight species of Shorea section Doona (Dipterocarpaceae) which vary in their adult distribution across a topographic/soils gradient at Sinharaja Forest Reserve, Sri Lanka.2 All combinations of the two nutrients resulted in increased dry mass yield, seedling height and leaf number after 24 months for seedlings of these species growing in pots of soil taken from a nearby Pinus plantation compared to a control which did not receive nutrients. In the presence of P, dry mass yield, leaf number and lateral root ratio declined in response to increasing Mg. In the presence of Mg, seedling height and stem mass ratio increased in response to increasing P.3 After 24 months maximum dry mass yield in response to nutrient addition was greater for the four species which occur on more nutrient-rich soils in the held. Maximum percentage increase in dry mass in response to nutrient addition was negatively correlated with mean dry mass of unfertilized seedlings, but the relationship did not discriminate between species according to adult distribution across the catena.4 There was no relation between seedling root mass ratio (RMR) or phenotypic plasticity in seedling RMR and adult distribution in relation to nutrient supply.5 In Shorea section Doona, trade-offs between seedling 'responsiveness' and 'tolerance' to nutrient supply, in terms of either growth or dry mass allocation, are not powerful determinants of differences in adult distribution in relation to nutrient supply. Differential dry mass yield in response to nutrient addition was determined by differences in seed size and seedling relative growth rates under the experimental conditions, as well as the degree of response to nutrient addition. Response to nutrient addition may be constrained by seedling characteristics relating to variation in irradiance and water availability.",
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AU - Gunatilleke, C V S

AU - Gunatilleke, I A U N

AU - Perera, G A D

AU - Burslem, David Francis Robert Philip

AU - Ashton, P M S

AU - Ashton, P S

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N2 - 1 Responses to the addition of P and Mg are described for eight species of Shorea section Doona (Dipterocarpaceae) which vary in their adult distribution across a topographic/soils gradient at Sinharaja Forest Reserve, Sri Lanka.2 All combinations of the two nutrients resulted in increased dry mass yield, seedling height and leaf number after 24 months for seedlings of these species growing in pots of soil taken from a nearby Pinus plantation compared to a control which did not receive nutrients. In the presence of P, dry mass yield, leaf number and lateral root ratio declined in response to increasing Mg. In the presence of Mg, seedling height and stem mass ratio increased in response to increasing P.3 After 24 months maximum dry mass yield in response to nutrient addition was greater for the four species which occur on more nutrient-rich soils in the held. Maximum percentage increase in dry mass in response to nutrient addition was negatively correlated with mean dry mass of unfertilized seedlings, but the relationship did not discriminate between species according to adult distribution across the catena.4 There was no relation between seedling root mass ratio (RMR) or phenotypic plasticity in seedling RMR and adult distribution in relation to nutrient supply.5 In Shorea section Doona, trade-offs between seedling 'responsiveness' and 'tolerance' to nutrient supply, in terms of either growth or dry mass allocation, are not powerful determinants of differences in adult distribution in relation to nutrient supply. Differential dry mass yield in response to nutrient addition was determined by differences in seed size and seedling relative growth rates under the experimental conditions, as well as the degree of response to nutrient addition. Response to nutrient addition may be constrained by seedling characteristics relating to variation in irradiance and water availability.

AB - 1 Responses to the addition of P and Mg are described for eight species of Shorea section Doona (Dipterocarpaceae) which vary in their adult distribution across a topographic/soils gradient at Sinharaja Forest Reserve, Sri Lanka.2 All combinations of the two nutrients resulted in increased dry mass yield, seedling height and leaf number after 24 months for seedlings of these species growing in pots of soil taken from a nearby Pinus plantation compared to a control which did not receive nutrients. In the presence of P, dry mass yield, leaf number and lateral root ratio declined in response to increasing Mg. In the presence of Mg, seedling height and stem mass ratio increased in response to increasing P.3 After 24 months maximum dry mass yield in response to nutrient addition was greater for the four species which occur on more nutrient-rich soils in the held. Maximum percentage increase in dry mass in response to nutrient addition was negatively correlated with mean dry mass of unfertilized seedlings, but the relationship did not discriminate between species according to adult distribution across the catena.4 There was no relation between seedling root mass ratio (RMR) or phenotypic plasticity in seedling RMR and adult distribution in relation to nutrient supply.5 In Shorea section Doona, trade-offs between seedling 'responsiveness' and 'tolerance' to nutrient supply, in terms of either growth or dry mass allocation, are not powerful determinants of differences in adult distribution in relation to nutrient supply. Differential dry mass yield in response to nutrient addition was determined by differences in seed size and seedling relative growth rates under the experimental conditions, as well as the degree of response to nutrient addition. Response to nutrient addition may be constrained by seedling characteristics relating to variation in irradiance and water availability.

KW - dry mass allocation

KW - magnesium

KW - nutrients

KW - phosphorus

KW - Shorea section Doona

KW - Sri Lanka

KW - tree seedlings

KW - tropical rain forest

KW - light

KW - dipterocarp forest

KW - neotropical forest

KW - plant-communities

KW - growth

KW - tree

KW - limitation

KW - maintenance

KW - recruitment

M3 - Article

VL - 85

SP - 301

EP - 311

JO - Journal of Ecology

JF - Journal of Ecology

SN - 0022-0477

IS - 3

ER -