Revision Date: September 2, 2014
This data set provides measurements for carbon (C), nitrogen (N), leaf area index (LAI), and carbon isotope ratio data (13C and 14C) of leaves sampled at the Manaus ZF2 Jacaranda transect area, Amazonas, Brazil, in 2001. Leaf tips and the petioles from the youngest and oldest leaves from sampled branches for 9 different species were analyzed.
There is one comma-delimited data file (.csv) with this data set.
Cite this data set as follows:
Trumbore, S.E. 2014. LBA-ECO CD-08 Leaf Carbon, Nitrogen, LAI, and Isotope Data, Manaus, Brazil: 2001. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, USA. http://dx.doi.org/10.3334/ORNLDAAC/1245
The LBA Data and Publication Policy [http://daac.ornl.gov/LBA/lba_data_policy.html] is in effect for a period of five (5) years from the date of archiving and should be followed by data users who have obtained LBA data sets from the ORNL DAAC. Users who download LBA data in the five years after data have been archived must contact the investigators who collected the data, per provisions 6 and 7 in the Policy.
This data set was archived in September 2014. Users who download the data between September 2014 and August 2019 must comply with the LBA Data and Publication Policy.
Data users should use the Investigator contact information in this document to communicate with the data provider.
Data users should use the Data Set Citation and other applicable references provided in this document to acknowledge use of the data.
Project: LBA (Large-Scale Biosphere-Atmosphere Experiment in the Amazon)
Activity: LBA-ECO
LBA Science Component: Carbon Dynamics
Team ID: CD-08 (Trumbore / Camargo)
The investigators were Trumbore, Susan E.; Camargo, Plinio Barbosa de; Chambers, Jeffrey Q.; Felsemburgh, Cristina Aledi; Higuchi, Niro; Ishida, Francoise Yoko; Lara, Luciene L.S.; Martinelli, Luiz Antonio; Melo, Antonio Willian Flores de; Miranda, Erika; Moreira, Marcelo Zacharias; Perez, Tibisay Josefina Acosta; Pinto, Alberto C.M.; Rocha, Rosana; Santos, Guaciara dos; Santos, Joaquim dos; Selhorst, Diogo; Silva, Roseana P. da; Silveira, Vanessa P.; Suemitzu, Chieno; Teixeira, Liliane Martins; Telles, Everaldo de Carvalho Conceicao; Tribuzy, Edgard Siza and Vieira, Simone Aparecida. You may contact Trumbore, Susan E. (setrumbo@uci.edu) and Camargo, Plinio Barbosa de (pcamargo@cena.usp.br).
LBA Data Set Inventory ID: CD08_Leaf_Isotopes_Manaus
This data set provides measurements for carbon (C), nitrogen (N), leaf area index (LAI), and carbon isotope ratio data (13C and 14C) of leaves sampled at the Manaus ZF2 Jacaranda transect area, Amazonas, Brazil, in 2001. Leaf tips and the petioles from the youngest and oldest leaves from sampled branches for 9 different species were analyzed.
Related Data Sets (research performed at the same site and during same time period):
LBA-ECO CD-08 Tropical Forest Ecosystem Respiration, Manaus, Brazil
LBA-ECO CD-08 Radiocarbon Dating of Tree Ages in Amazonas, Acre, and Para in Brazil
Data are provided in one comma-delimited (.csv) file: leaf_isotopes_manaus.csv
All samples were collected on August 8, 2001. Missing data are represented as -9999.
| Column | Column Heading | Units/format | Description |
|---|---|---|---|
| 1 | Site | Study site. All samples were taken at the Manaus ZF2 site (Manaus ZF2 transect). | |
| 3 | Common_name | Local name in Portugese | |
| 4 | Genus | Genus of plant sampled | |
| 5 | Family | Scientific family of plant sampled | |
| 6 | Relative_age_leaf | Relative age of leaves based on position on the twig: Young leaves were taken from the tip and old leaves from the position farthest away from the tip | |
| 7 | Subsample | Sample type: both leaf tip (Tip) and petiole (Stem) were sampled | |
| 8 | Mean_leaf_area | cm^2 | Leaf area was measured by making photo copies of the leaves, cutting them out, weighing the cut-outs, and converting weight of the paper to area in cm^2 |
| 9 | Std_dev_leaf_area | cm^2 | Standard deviation of the leaf area measurements in cm^2 |
| 10 | Sample_count | Number of individual leaves used in calculating average and standard deviation for leaf area | |
| 11 | N_concentration | % | Leaf nitrogen concentration measured by dry combustion using a Fisons elemental analyzer according to standard methods |
| 12 | C_concentration | % | Leaf carbon concentration measured by dry combustion using a Fisons elemental analyzer according to standard methods |
| 13 | CN_ratio | Mass based ratio of carbon to nitrogen concentrations | |
| 14 | delta_13C | per mil | delta13C data are reported as [[13C/12C ratio of the sample divided by the 13C/12C of the PeeDee Belemnite standard] -1]*1000 |
| 15 | Delta_14C | per mil | Measured using accelerator mass spectrometry with an overall accuracy of +/- 5 per mil. DELTA 14C data are reported as 14C/12C ratio of the sample divided by 0.95 times the 14C/12C of the Oxalic Acid standard |
Example data records:
| Site,Common_name,Genus,Family,Relative_age_leaf,Subsample,Mean_leaf_area, Std_dev_leaf_area,Sample_count,N_concentration,C_concentration,CN_ratio,delta_13C,Delta_14C Manaus_ZF2_transect,Breu_manga,Protium,Burseraceae,Young,Tip, -9999,-9999,-9999,2.39,49.57,21,-35.07,77.1 Manaus_ZF2_transect,Breu_manga,Protium,Burseraceae,Young,Stem, -9999,-9999,-9999,1.1,46.91,43,-35.03,80.6 Manaus_ZF2_transect,Breu_manga,Protium,Burseraceae,Old,Tip, -9999,-9999,-9999,2.01,45.23,23,-36.26,80.8 ... Manaus_ZF2_transect,Lacre_Branco_da_Mata,Vismia,Clusiaceae,Old,Tip, 43,10,7,1.9,52.29,28,-33.43,91.55 Manaus_ZF2_transect,Lacre_Branco_da_Mata,Vismia,Clusiaceae,Old,Stem, 43,10,7,0.93,48.5,52,-33.12,98.2 Manaus_ZF2_transect,Maçaranduba,Manilkara,Sapotaceae,Young,Tip, 68,17,5,1.16,53.96,47,-31.46,81.7 ... Manaus_ZF2_transect,Matamata,Eschweilera,Lecythidaceae,Young,Stem, 17,7,7,1.16,51.56,44,-34.81,97.7 Manaus_ZF2_transect,Matamata,Eschweilera,Lecythidaceae,Old,Tip, 31,5,7,2.3,52.07,23,-36.02,91.6 Manaus_ZF2_transect,Matamata,Eschweilera,Lecythidaceae,Old,Stem, 31,5,7,1.2,36.16,30,-35.51,88.8 |
| Site (Region) | Westernmost Longitude | Easternmost Longitude | Northernmost Latitude | Southernmost Latitude | Geodetic Datum |
|---|---|---|---|---|---|
| Amazonas (Manaus) - ZF2 km 34 (Amazonas (Manaus)) | -60.20910 | -60.00000 | -2.50000 | -2.60900 | WGS-84 |
Time period:
Platform/Sensor/Parameters measured include:
Biophysical parameters are components of the biosphere models used in climate simulation studies.
Site description
This study was carried out in the ZF-2 Experimental Station of the National Institute for Research in the Amazon (INPA), approximately 90-km north of Manaus, the capital of Amazonas State, Brazil. The site is a dense terra-firme tropical moist forest, which dominates the Central Amazon landscape (Higuchi et al., 1997).
Sampling
All samples were collected on August 8, 2001 at the Manaus ZF2 site (Manaus_ZF2_transect). Leaf tips and petioles (stem) were sampled. The relative age of leaves based on position on the twig are also reported. Young leaves were taken from the tip of the twig and old leaves from the end of the twig. Leaves were dried and stored until analysis at CENA.
Analysis
Leaf area was measured by making photo copies of the leaves, cutting them out, weighing the cut-outs, and converting weight of the paper to area in cm^2.
Leaf carbon and nitrogen concentrations (%) were measured by dry combustion using a Fisons elemental analyzer according to standard methods.
Delta (lower case Greek Delta) 13C data are reported as [[13C/12C ratio of the sample divided by the 13C/12C of the PeeDee Belemnite standard] -1]*1000.
Delta (upper case Greek Delta)14C was measured using accelerator mass spectrometry with an overall accuracy of +/- 5 per mil. Delta (capital greek Delta) 14C data are reported as [[14C/12C ratio of the sample divided by 0.95 times the 14C/12C of the Oxalic Acid I standard, decay corrected to 1950] -1]*1000.
NOTE: For additional information on 13C and 14C isotope analysis, refer to Telles et al., 2011 and Trumbore 1993.
These data are available through the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC).
Contact for Data Center Access Information:
E-mail: uso@daac.ornl.gov
Telephone: +1 (865) 241-3952
Higuchi. N., dos Santos, J., Ribeiro, R.J., Freitas, J.V., Vieira, G., Coic, A., Minette, L.J., 1997.
Crescimento e Incremento de uma Floresta Amazonica de
Terra-Firme Manejada Experimentalmente. In:
Biomassa de Nutrientes Florestais. INPA/ DFID, pp. 89-132.
Telles E.D.C., P.B. de Camargo, L.A. Martinelli, S.E. Trumbore, E.S. da Costa, J. Santos, N. Higuchi, R.C. Oliveira and D. Markewitz. 2011. LBA-ECO CD-08 Carbon Isotopes in Belowground Carbon Pools, Amazonas and Para, Brazil. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. http://dx.doi.org/10.3334/ORNLDAAC/1025
Trumbore, S. (1993) Comparison of carbon dynamics in tropical and temperate soils using radiocarbon measurements, Global Biogeochemical Cycles, 7, 275-290.