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Investigation:

LC-21 (Asner / Bustamante / Silva)

LBA Dataset ID:

LC21_Foliar_Nutrients

Originator(s):

1. Asner, Gregory Paul
2. Bustamante, Mercedes M.C.
3. Silva, Jose Natalino Macedo
4. Broadbent, Eben North
5. Carlson, Kim
6. Carvalho, Ana Paula Ferreira
      7. Hare, Anna Quinn
8. Knapp, David E.
9. Oliveira, Paulo Jose Silva Costa
10. Prado, Zayra Azeredo
11. Silva, Jose Salomao Oliveira
12. Villagomez, April Marie

Point(s) of Contact:

Asner, Gregory P. (gpa@stanford.edu)
Bustamante. Mercedes (mercedes@unb.br)

Dataset Abstract:

This data set contains foliar and litter nutrients for various logging blocks in the Flona Tapajos. The data include concentrations of the following nutrients: Ca, P, Mg, N, and K. The logging blocks to which these data pertain are noted in the data files.
Data Quality Statement: The Data Center has determined that this data set has missing or incomplete data, metadata, or other documentation resulting in diminished usability of this product. User beware.
Known Problems: The data file provided does not comply with long-term archive center specifications. No additional information was available to adequately identify the data values or to convert the Excel spreadsheet to comma-delimited ASCII.

Beginning Date:

2003-03-01

Ending Date:

2003-03-01

Metadata Last Updated on:

2011-12-29

Data Status:

Not yet in archive queue

Access Constraints:

Public

Data Center URL:

http://daac.ornl.gov

Distribution Contact(s):

ORNL DAAC User Services (uso@daac.ornl.gov)

Access Instructions:

Public

Data Access:

IMPORTANT: The LBA-ECO Project website is no longer being supported. Links to external websites may be inactive. Final data products from the LBA project can be found at the ORNL DAAC. Please follow the fair use guidelines found in the dataset documentation when using or citing LBA data.
Datafile(s):

Citation Information - Other Details:

Asner, G.P., L.P. Olander. 2008. LBA-ECO LC-21 Foliar Nutrients at a Selective Logging Site in Flona Tapajos: 2003. Data set. Available on-line [http://daac.ornl.gov ] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A.

Keywords - Theme:

Parameter Topic Term Source Sensor
FOLIAR NUTRIENTS LAND SURFACE FOLIAR NUTRIENTS    

Uncontrolled Theme Keyword(s):  LOGGING, NUTRIENTS, TAPAJOS

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
Para Western (Santarem) FLONA Tapajos -2.75000 -3.58333 -54.83333 -55.25000

Related Publication(s):

Olander, Lydia P., Mercedes M. Bustamante, Gregory P. Asner, Everaldo Telles, Zayra Prado, and Plinio Camargo. Surface soil changes following selective logging in an Eastern Amazon forest. Earth Interactions Vol. 9( ).

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

The data are in units of kg per meter^2, unless otherwise specified.

Data Application and Derivation:

These data were collected to demonstrate how the nutrient concentration changes from fresh foliage to litter after a selective logging event.

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

These data were reviewed and found to be reasonable and accurate.

Process Description:

Data Acquisition Materials and Methods:

Fresh foliage was collected from 192 upper canopy species at a site 17 km from the logging area. The species were selected based on relative abundance and comprised of all genera listed by Keller et al. (2001), Nepstad et al. (2002), and Asner et al. (2004c). Foliage was shot from full sunlight positions using a shotgun, captured, and pressed for subsequent drying at 70 degrees C for five days. Samples were transported to the University of Brasilia for nutrient analysis using an ICP mass spectrometer (ICP-AES, IRIS/AP, Jarrell-Ash Corp., Franklin, MA, USA). Nitrogen concentration was measured by Nessler colorimetric method. Two analytical replicates per sample were analyzed using reference material (1547, Peach Leaves, NIST). Data were partitioned by mature and pioneer habitat, as described by Parrotta et al. (1995).

References:

Keller, M., M. Palace, and G. Hurtt. 2001. Biomass estimation in the Tapajos National Forest, Brazil: Examination of sampling and allometric uncertainties. Forest Ecology and Management 154:371-382.



Asner, G.P., A.R. Townsend, M.M.C. Bustamante, G.B. Nardoto, and L.P. Olander. 2004c. Pasture degradation in the central Amazon: Linking changes in carbon and nutrient cycling with remote sensing. Global Change Biology 10:844-862.

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