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Description

This data set includes five ASCII files (.txt format). Three files contain above- and below-ground biomass and net primary productivity (NPP) data, one file for each tropical forest study site near San Carlos de Rio Negro, Venezuela. The study sites are located along an ecosystem gradient from riverine to lateritic hill: Tall Amazon Caatinga forest on coarse sandy spodosols close to river level; Bana vegetation on sandy soils less prone to flooding; and Tierra Firme mixed forest on clay oxisols of higher ground. Bioelement concentrations are also provided. The other two files contain climate data from a weather station in San Carlos village.

ANPP for the Tierra Firme forest is estimated at 1,590 g/m2/year, including woody biomass increment of 600 g/m2/year, and BNPP values in the range of 201-1,117 g/m2/year, suggesting a minimum estimate of TNPP of 1,800-2,700 g/m2/year. ANPP of a nearby cut-and-burned oxisol plot attained 1,940 g/m2 in the fifth year following clearing. ANPP of Tall Amazon Caatinga is estimated at 1,150 g/m2/year, with root turnover of 120 g/m2/year, giving a minimum estimate of TNPP of 1,270 g/m2/year. TNPP estimate for Bana vegetation, based on annual litterfall accumulation plus root production, is 478 g/m2/year.

Product Summary

Platforms
FIELD INVESTIGATION
Instruments
BALANCE ,
STEEL MEASURING TAPE ,
CORING DEVICES ,
QUADRATS
Spatial Extent

N: 1.93 S: 1.93 E: -67.05 W: -67.05

Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
1950-01-01 to 1984-12-31
Data Partner
THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC) (ORNL_DAAC)
Concept ID
C2751946380-ORNL_CLOUD
Data State
COMPLETE
Number of Files/Granules
4
Processing Level
3
Published
Updated
Science Keywords
Biomass Dynamics ,
Primary Production ,
Biomass

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Jordan, C. F., Cuevas, E., & Medina, E. (2013). NPP Tropical Forest: San Carlos de Rio Negro, Venezuela, 1975-1984, R1 (Version 2). ORNL Distributed Active Archive Center. https://doi.org/10.3334/ORNLDAAC/479 Date Accessed: 2026-05-03

Documents

USER'S GUIDE

GENERAL DOCUMENTATION

Publications Citing This Dataset

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Title Year Author Topic
The allocation of ecosystem net primary productivity in tropical forests Malhi, Yadvinder, Doughty, Christopher, Galbraith, David Biomass Dynamics, Primary Production, Biomass
CO<SUB>2</SUB> balance of boreal, temperate, and tropical forests derived from a global database LUYSSAERT, S., INGLIMA, I., JUNG, M., RICHARDSON, A. D., REICHSTEIN, M., PAPALE, D., PIAO, S. L., SCHULZE, E. D., WINGATE, L., MATTEUCCI, G., ARAGAO, L., AUBINET, M., BEER, C., BERNHOFER, C., BLACK, K. G., BONAL, D., BONNEFOND, J. M., CHAMBERS, J., CIAIS, P., COOK, B., DAVIS, K. J., DOLMAN, A. J., GIELEN, B., GOULDEN, M., GRACE, J., GRANIER, A., GRELLE, A., GRIFFIS, T., GRUNWALD, T., GUIDOLOTTI, G., HANSON, P. J., HARDING, R., HOLLINGER, D. Y., HUTYRA, L. R., KOLARI, P., KRUIJT, B., KUTSCH, W., LAGERGREN, F., LAURILA, T., LAW, B. E., LE MAIRE, G., LINDROTH, A., LOUSTAU, D., MALHI, Y., MATEUS, J., MIGLIAVACCA, M., MISSON, L., MONTAGNANI, L., MONCRIEFF, J., MOORS, E., MUNGER, J. W., NIKINMAA, E., OLLINGER, S. V., PITA, G., REBMANN, C., ROUPSARD, O., SAIGUSA, N., SANZ, M. J., SEUFERT, G., SIERRA, C., SMITH, M. L., TANG, J., VALENTINI, R., VESALA, T., JANSSENS, I. A. Biomass Dynamics, Primary Production, Biomass, Soil Classification, Soil Chemistry, Soil Bulk Density, Nitrogen, Carbon, Soil Horizons/Profile, Soil Moisture/Water Content, Soil Water Holding Capacity
The human footprint in the carbon cycle of temperate and boreal forests Magnani, Federico, Mencuccini, Maurizio, Borghetti, Marco, Berbigier, Paul, Berninger, Frank, Delzon, Sylvain, Grelle, Achim, Hari, Pertti, Jarvis, Paul G., Kolari, Pasi, Kowalski, Andrew S., Lankreijer, Harry, Law, Beverly E., Lindroth, Anders, Loustau, Denis, Manca, Giovanni, Moncrieff, John B., Rayment, Mark, Tedeschi, Vanessa, Valentini, Riccardo, Grace, John Nitrogen Compounds, Nitrogen Oxides, Biomass Dynamics, Primary Production, Biomass, Carbon, Nitrogen, Soil Water Holding Capacity, Soil Bulk Density, Soil Chemistry, Soil Classification, Soil Moisture/Water Content, Soil Horizons/Profile
Terrestrial net primary productivity A brief history and a new worldwide database Scurlock, J MO, Olson, R J Biomass Dynamics, Primary Production, Biomass, Forest Composition/Vegetation Structure
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