Title: Wood CO2 efflux in a primary tropical rain forest
Author: Cavaleri, Molly A.; Oberbauer, Steven F.; Ryan, Michael G.
Source: Global Change Biology. 12: 2442-2458.
Publication Series: Journal/Magazine Article (JRNL)
Description: The balance between photosynthesis and plant respiration in tropical forests may substantially affect the global carbon cycle. Woody tissue CO2 efflux is a major component of total plant respiration, but estimates of ecosystem-scale rates are uncertain because of poor sampling in the upper canopy and across landscapes. To overcome these problems, we used a portable scaffolding tower to measure woody tissue CO2 efflux from ground level to the canopy top across a range of sites of varying slope and soil phosphorus content in a primary tropical rain forest in Costa Rica. The objectives of this study were to: (1) determine whether to use surface area, volume, or biomass for modeling and extrapolating wood CO2 efflux, (2) determine if wood CO2 efflux varied seasonally, (3) identify if wood CO2 efflux varied by functional group, height in canopy, soil fertility, or slope, and (4) extrapolate wood CO2 efflux to the forest.
Keywords: autotrophic respiration, branch respiration, canopy structure, carbon balance, plant functional group, seasonality, slope, soil phosphorus, tropical wet forest, woody tissue respiration
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
XML: View XML
Cavaleri, Molly A.; Oberbauer, Steven F.; Ryan, Michael G. 2006. Wood CO2 efflux in a primary tropical rain forest. Global Change Biology. 12: 2442-2458.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility