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Foliar and ecosystem respiration in an old-growth tropical rain forest


Cavaleri, 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.

Foliar 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 withincanopy variability in respiration and foliar nutrients.

Keywords: autotrophic respiration, canopy structure, carbon balance, foliar N, foliar P, LMA, photosynthesis, plant functional group, Q10, tropical wet forest


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http://www.fs.fed.us/rm/pubs_other/rmrs_2008_cavaleri_m001.pdf

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Title: RMRS Other Publications: Foliar and ecosystem respiration in an old-growth tropical rain forest
Electronic Publish Date: April 12, 2008
Last Update:
April 12, 2008

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