U.S. Department of EnergyOffice of Scientific and Technical Information
Diurnal observations of basal stem CO2 efflux in three canopy dominant trees in the central Amazon
Abstract
We explored mechanisms responsible for disturbance-induced shifts in carbon metabolism in forests north of Manaus, Brazil (S2º 38' 17", W60º 09' 25"), using data from a selective logging experiment (BIONTE). BIONTE (the BIOmass and NuTrient Experiment) selective logging treatments were initiated in the mid-1980s and comprised variable removal of commercial tree (not total) species basal area (T1 =32%, T2 = 42%, T3 = 69%), and control plots with no logging (T0). Raw data including tree base diameter (Db), CO2 concentration versus time inside a static stem chamber, and wood density were used to derive stem respiration rates (Rw), wood production rates (Pw), and wood carbon use efficiency (CUE). Changes in tree base diameter (Db; measured at 1.3 m height, or above the buttresses) was used to calculate wood production for individual trees (Pw). Wood density enabled calculation of stem growth rate in the same units as stem respiration (mmol C m-2 s-1). Four trees were randomly selected from five tree growth rate classes for each treatment block, for a total of 20 trees per treatment block, or 80 trees total from the BIONTE plots. Each of the 80 trees selected for the Rw study were outfitted with dendrometer bands (damore »
- Authors:
-
- Lawrence Berkeley National Lab
- LBNL
- INPA
- Publication Date:
- Other Number(s):
- NGT0168
- Research Org.:
- Next-Generation Ecosystem Experiments Tropics; Programa de Pós-Gradução-CFT/INPA
- Sponsoring Org.:
- NASA LBA- ECO, INPA, US DOE
- Subject:
- 54 ENVIRONMENTAL SCIENCES
- OSTI Identifier:
- 1767825
- DOI:
- https://doi.org/10.15486/ngt/1767825
Citation Formats
Teixeira, Liliane, Chambers, Jeff, Higuchi, Niro, dos Santos, Joaquim, Goulden, Michael, Jardine, Kolby, and East, Malyia-Mason. Diurnal observations of basal stem CO2 efflux in three canopy dominant trees in the central Amazon. United States: N. p., 2021.
Web. doi:10.15486/ngt/1767825.
Teixeira, Liliane, Chambers, Jeff, Higuchi, Niro, dos Santos, Joaquim, Goulden, Michael, Jardine, Kolby, & East, Malyia-Mason. Diurnal observations of basal stem CO2 efflux in three canopy dominant trees in the central Amazon. United States. doi:https://doi.org/10.15486/ngt/1767825
Teixeira, Liliane, Chambers, Jeff, Higuchi, Niro, dos Santos, Joaquim, Goulden, Michael, Jardine, Kolby, and East, Malyia-Mason. 2021.
"Diurnal observations of basal stem CO2 efflux in three canopy dominant trees in the central Amazon". United States. doi:https://doi.org/10.15486/ngt/1767825. https://www.osti.gov/servlets/purl/1767825. Pub date:Fri Jan 01 04:00:00 UTC 2021
@article{osti_1767825,
title = {Diurnal observations of basal stem CO2 efflux in three canopy dominant trees in the central Amazon},
author = {Teixeira, Liliane and Chambers, Jeff and Higuchi, Niro and dos Santos, Joaquim and Goulden, Michael and Jardine, Kolby and East, Malyia-Mason},
abstractNote = {We explored mechanisms responsible for disturbance-induced shifts in carbon metabolism in forests north of Manaus, Brazil (S2º 38' 17", W60º 09' 25"), using data from a selective logging experiment (BIONTE). BIONTE (the BIOmass and NuTrient Experiment) selective logging treatments were initiated in the mid-1980s and comprised variable removal of commercial tree (not total) species basal area (T1 =32%, T2 = 42%, T3 = 69%), and control plots with no logging (T0). Raw data including tree base diameter (Db), CO2 concentration versus time inside a static stem chamber, and wood density were used to derive stem respiration rates (Rw), wood production rates (Pw), and wood carbon use efficiency (CUE). Changes in tree base diameter (Db; measured at 1.3 m height, or above the buttresses) was used to calculate wood production for individual trees (Pw). Wood density enabled calculation of stem growth rate in the same units as stem respiration (mmol C m-2 s-1). Four trees were randomly selected from five tree growth rate classes for each treatment block, for a total of 20 trees per treatment block, or 80 trees total from the BIONTE plots. Each of the 80 trees selected for the Rw study were outfitted with dendrometer bands (da Silva et al. 2002). Stem respiration was measured using the method described in Chambers et al. (2004). Briefly, an infra-red gas analyzer (LiCor 820) was operated as a closed dynamic chamber with a flow rate of 1.0 L min-1. Polyvinyl chloride (PVC) semi-cylindrical chambers (250–400 mL) were secured to the tree stem near the dendrometer bands using nylon straps. The measurement interval spanned 1–2 min, and the CO2 flux from the stem of each tree was quantified using the enclosed stem area and slope of the stem CO2 concentration versus time.},
doi = {10.15486/ngt/1767825},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 04:00:00 UTC 2021},
month = {Fri Jan 01 04:00:00 UTC 2021}
}