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Foliar and ecosystem respiration in an old-growth tropical rain forestAuthor(s): Molly A. Cavaleri; Steven F. Oberbauer; Michael G. Ryan
Source: Plant, Cell and Environment. 31: 473-483.
Publication Series: Miscellaneous Publication
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DescriptionFoliar respiration is a major component of ecosystem respiration, yet extrapolations are often uncertain in tropical forests because of indirect estimates of leaf area index (LAI).A portable tower was used to directly measure LAI and night-time foliar respiration from 52 vertical transects throughout an old-growth tropical rain forest in Costa Rica. In this study, we (1) explored the effects of structural, functional and environmental variables on foliar respiration; (2) extrapolated foliar respiration to the ecosystem; and (3) estimated ecosystem respiration. Foliar respiration temperature response was constant within plant functional group, and foliar morphology drove much of the within-canopy variability in respiration and foliar nutrients.
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CitationCavaleri, Molly A.; Oberbauer, Steven F.; Ryan, Michael G. 2008. Foliar and ecosystem respiration in an old-growth tropical rain forest. Plant, Cell and Environment. 31: 473-483.
Keywordsautotrophic respiration, canopy structure, carbon balance, foliar N, foliar P, LMA, photosynthesis, plant functional group, Q10, tropical wet forest
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