Effects of Elevated CO2 and Defoliation on Compensatory Growth and Photosynthesis of Seedlings in a Tropical Tree, Copaifera aromatica

Lovelock, Catherine E., Posada, Juan and Winter, Klaus (1999) Effects of Elevated CO2 and Defoliation on Compensatory Growth and Photosynthesis of Seedlings in a Tropical Tree, Copaifera aromatica. Biotropica, 31 2: 279-287. doi:10.1111/j.1744-7429.1999.tb00139.x


Author Lovelock, Catherine E.
Posada, Juan
Winter, Klaus
Title Effects of Elevated CO2 and Defoliation on Compensatory Growth and Photosynthesis of Seedlings in a Tropical Tree, Copaifera aromatica
Journal name Biotropica   Check publisher's open access policy
ISSN 006-3606
1744-7429
Publication date 1999-01-01
Year available 1999
Sub-type Article (original research)
DOI 10.1111/j.1744-7429.1999.tb00139.x
Open Access Status Not yet assessed
Volume 31
Issue 2
Start page 279
End page 287
Total pages 9
Place of publication LAWRENCE
Publisher ASSOC TROPICAL BIOLOGY INC
Language eng
Abstract After defoliation by herbivores, some plants exhibit enhanced rates of photosynthesis and growth that enable them to compensate for lost tissue, thus maintaining their fitness relative to competing, undefoliated plants. Our aim was to determine whether compensatory photosynthesis and growth would be altered by increasing concentrations of atmospheric CO2. Defoliation of developing leaflets on seedlings of a tropical tree, Copaifera aromatica, caused increases in photosynthesis under ambient CO2, but not under elevated CO2. An enhancement in the development of buds in the leaf axils followed defoliation at ambient levels of CO2. In contrast, under elevated CO2, enhanced development of buds occurred in undefoliated plants with no further enhancement in bud development due to exposure to elevated CO2. Growth of leaf area after defoliation was increased, particularly under elevated CO2. Despite this increase, defoliated plants grown under elevated CO2 were further from compensating for tissue lost during defoliation after 5-1/2 weeks than those grown under ambient CO2 concentrations.
Keyword Ecology
Environmental Sciences & Ecology
ECOLOGY
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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Created: Fri, 16 May 2014, 04:55:39 EST by Professor Catherine Lovelock on behalf of School of Biological Sciences