Files of data collected at, or relevant to, different field sites that were used to construct the Keeling plot intercept figures and 18O discrimination figures published in text.
Ecological Archives A015-003-S1.
Authors
File list (downloads)
Description
Literature cited
Jean P. H. Ometto
Lawrence B. Flanagan
Centro de Energia Nuclear na Agricultura
Av. Centenário 303
Cep 13416-000
Piracicaba SP, Brazil
Department of Biological Sciences
University of Lethbridge
4401 University Drive
Lethbridge, Alberta, T1K 3M4 CanadaLuiz A. Martinelli
Centro de Energia Nuclear na Agricultura
Av. Centenário 303
Cep 13416-000
Piracicaba SP, BrazilJames R. Ehleringer
Stable Isotope Ratio Facility for Environmental Research
Department of Biology
University of Utah
257 South 1400 East
Salt Lake City, Utah 84112-0840 USA
Ji-Parana Forest.txt - Ji-Parana forest data
Manaus Forest.txt - Manaus forest data
Santarem Forest.txt - Santarem forest data
Ji-Parana Pasture.txt - Ji-Parana pasture data
Manaus Pasture.txt - Manaus pasture data
Santarem Pasture.txt - Santarem pasture data
The data files present data collected at or relevant to different field sites that were used to construct the Keeling-plot intercept figures and 18-oxygen discrimination figures published in the manuscript.
Each data file represents a different field location in the Amazon Basin of Brazil with the name of the file reflecting the field site location. These field locations were
Ji- Paraná Forest, latitude = 10.08° S, longitude = 61.92° W
Ji- Paraná Pasture, latitude = 10.75° S, longitude = 62.37° W
Manaus Forest, latitude = 2.69° S, longitude = 60.11° W
Manaus Pasture, latitude = 3.02° S, longitude = 54.06° W
Santarém Forest, latitude = 2.85° S, longitude = 54.05° W
Santarém Pasture, latitude = 3.02° S, longitude = 54.06° W
Within each of these text files, we provide 18 columns of data collected at that field site. The data columns are as follows:
(a) month and year of data collection
(b) assumed atmospheric carbon dioxide concentration in the troposphere based on NOAA/CMDL data (ftp.cmdl.noaa.gov/ccg, September 2002); units of parts per million
(c) assumed carbon isotope ratio of atmospheric carbon dioxide in the troposphere based on NOAA/CMDL data (ftp.cmdl.noaa.gov/ccg, September 2002); units of per mil relative to the V-PDB international standard
(d) the ratio of the leaf intercellular to atmospheric carbon dioxide concentrations based on inverting measured leaf carbon isotope ratio values reported in the Ometto et al. (2002) using the Farquhar et al. (1989) predictive model; data are unitless
(e) the calculated leaf intercellular carbon dioxide concentrations based on the product of the ratio of the leaf intercellular to atmospheric carbon dioxide concentrations and the atmospheric carbon dioxide concentration in the troposphere; units are parts per million
(f) the calculated leaf discrimination against 18-oxygen in carbon dioxide based on the model of Farquhar et al. (1993); units of per mil relative to the V-SMOW international standard
(g) the Keeling-plot intercept for the carbon isotope ratio of ecosystem respiration; units are per mil relative to the V-PDB international standard
(h) the Keeling-plot intercept for the oxygen isotope ratio of ecosystem respiration; units are per mil relative to the V-SMOW international standard
(i) assumed oxygen isotope ratio of atmospheric carbon dioxide in the troposphere based on NOAA/CMDL data (ftp.cmdl.noaa.gov/ccg, September 2002); units of per mil relative to the V-SMOW international standard
(j) the oxygen isotope ratio of atmospheric carbon dioxide measured at the top of the canopy; units of per mil relative to the V-SMOW international standard
(k) the oxygen isotope ratio of carbon dioxide in equilibrium with leaf water; units of per mil relative to the V-SMOW international standard
(l) the oxygen isotope ratio of leaf water; units of per mil relative to the V-SMOW international standard
(m) leaf temperature; units are degrees Celsius
(n) the equilibrium fractionation factor between oxygen in water and oxygen in carbon dioxide; data are unitless
(o) the oxygen isotope ratio of stem water which is assumed to be the same as the soil water being taken up by the plant; units of per mil relative to the V-SMOW international standard
(p) the diffusion fractionation against 18-oxygen associated with the gaseous diffusion of carbon dioxide in soils; units are per mil
(q) the oxygen isotope ratio of the Keeling plot intercept based on equations presented in the manuscript assuming that carbon dioxide effluxing from leaves is in equilibrium with a leaf water whose value is the same as stem water; units are per mil relative to the V-SMOW international standard
(r) the oxygen isotope ratio of the Keeling plot intercept based on equations presented in the manuscript assuming that carbon dioxide effluxing from leaves is in equilibrium with a measured leaf water; units are per mil relative to the V-SMOW international standard
Data reported in this manuscript were part of an ongoing USA-Brazil collaborative research project titled The Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). A data and information management system located at INPE/CPTEC - the LBA Data and Information System (LBA-DIS) - has been developed by INPE, with NASA's participation. The LBA-DIS holds, manages, and distributes LBA data and information. INPE is the repository for all LBA-DIS data and information, and NASA will have at its disposal copies of the system and of the data and information. The core of LBA-DIS is the archival and distribution system at INPE/CPTEC, and managed by the LBA Central Office, which has full responsibility for LBA data archival and distribution for decades to come. This LBA-DIS central node has mirror sites and supporting nodes in the U.S. and Europe.
As required by Brazilian law, the original data collected in Brazil and reported in this manuscript must remain in Brazil. Additionally, NASA has agreed to ensure that copies of scientific data and results from LBA will be provided to INPE/CPTEC. The NASA-designated long-term archive for ecological and biogeochemical data is the Distributed Active Archive Center (DAAC) at the Oak Ridge National Laboratory (ORNL). Thus, data collected through LBA-ECO will be archived and distributed at the ORNL DAAC as well as in Brazil. In addition, these data are mirrored at ftp://ecophys.biology.utah.edu/lba
Additional data related to this manuscript that continued to be collected after the time of the publication of this manuscript can be found at the sites referred to above.
Agency abbreviations:
CPTEC = Centro de Previsao de Tempo e Estudos Climaticos (Brasil)
DAAC = Distributed Active Archive Center at ORNL (USA)
INPE = Instituto Nacional de Pesquisas Espaciais (Brasil)
LBA = The Large-Scale Biosphere-Atmosphere Experiment in Amazonia
LBA-DIS = LBA Data and Information System
NASA = National Aeronautics and Space Administration (USA)
NOAA/CMDL = National Oceanic and Atmospheric Administration, Carbon Dioxide Monitoring and Diagnostics Laboratory (USA)
ORNL = Oak Ridge National Laboratory (USA)
Farquhar, G. D., J. R. Ehleringer, and K. T. Hubick. 1989. Carbon isotope discrimination and photosynthesis. Annual Review of Plant Physiology and Molecular Biology 40:503–537.
Farquhar, G. D., J. Lloyd, J. A. Taylor, L. B. Flanagan, J. P. Syvertsen, K. T. Hubick, S. C. Wong, and J. R. Ehleringer. 1993. Vegetation effects on the isotope composition of oxygen in atmospheric CO2. Nature 363:439–443.
Ometto, J. P. H. B., L. B. Flanagan, L. A. Martinelli, M. Z. Moreira, N. Higuchi, and J. R. Ehleringer. 2002. Carbon isotope discrimination in forest and pasture ecosystems of the Amazon Bbasin, Brazil. Global Biogeochemical Cycles16(4):1109. doi:10.1029/2001GB001462
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