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Investigation:

CD-10 (Wofsy / Kirchhoff / Camargo / A. Nobre)

LBA Dataset ID:

CD10_BIOMETRY_TAPAJOS

Originator(s):

1. RICE, A.H.
2. HAMMOND, E.P.
3. SALESKA, S.R.
4. HUTYRA, L.R.
5. PALACE, M.W.
      6. KELLER, M.M.
7. DE CAMARGO, P.B.
8. PORTILHO, K.
9. MARQUES, D.
10. WOFSY, S.C.

Point(s) of Contact:

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@ornl.gov)

Dataset Abstract:

This data set contains a single text file which reports biometry measurements of the old-growth upland forest at the km 67 Primary Forest Tower Site in western Para, Santarem. This site is in the Tapajos National Forest located in north central Brazil. Measurements extend from July 1999 through March 2005. To monitor tree woody increment, metal dendrometer bands were placed on a sub-sample of 1000 trees in December 1999. The data set contains estimates of tree diameter at breast height (cm) based on caliper measurements made approximately every six weeks. The first column of data refers to the tree identification number. For a more detailed description of the biometry study refer to Rice et al. 2004. The data file contains a time series of DBH (cm) values from July 1999 through March 2005.
These data may be updated or reprocessed from time to time, and it is the user's responsibility to insure that you have the most recent version of the data. For the latest version, please see the following web site: Harvard University, LBA Web Page (http://www-as.harvard.edu/data/lbadata.html)

Beginning Date:

1999-07-01

Ending Date:

2005-03-31

Metadata Last Updated on:

2008-06-13

Data Status:

Archived

Access Constraints:

PUBLIC

Data Center URL:

http://daac.ornl.gov/

Distribution Contact(s):

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@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):

LBA-ECO CD-10 Ground-based Biometry Data at km 67 Tower Site, Tapajos National Forest:  http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=854

Documentation/Other Supporting Documents:

LBA-ECO CD-10 Ground-based Biometry Data at km 67 Tower Site, Tapajos National Forest:  http://daac.ornl.gov/LBA/guides/CD10_Biometry_Tapajos.html

Citation Information - Other Details:

Rice, A. H., E. P. Hammond, S. R. Saleska, L. Hutyra, M. Palace, M. Keller, P. B. de Carmargo, K. Portilho, D. Marques and S. C. Wofsy. 2007. LBA-ECO CD-10 Ground-based Biometry Data at km 67 Tower Site, Tapajos National Forest. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. doi:10.3334/ORNLDAAC/854

Keywords - Theme:

Parameter Topic Term Source Sensor
BIOMASS BIOSPHERE VEGETATION FIELD INVESTIGATION STEEL MEASURING TAPE

Uncontrolled Theme Keyword(s):  BIOMASS, DENDROMETRY, KM 67, TAPAJOS NATIONAL FOREST

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
Pará Western (Santarém) km 67 Primary Forest Tower Site -2.85700 -2.85700 -54.95900 -54.95900

Related Publication(s):

Rice, A.H., E.H. Pyle, S.R. Saleska, L. Hutyra, M. Palace, M. Keller, P.B. de Camargo, K. Portilho, D.F. Marques, and S.C. Wofsy. 2004. Carbon balance and vegetation dynamics in an old-growth Amazonian forest. Ecological Applications 14(4):S55.

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

The biometry data are reported in one comma-separated ASCII text file:

lba_km67_dend_dbhs_filled_archive.txt



The data file contains a time series of DBH (cm) values from July 1999 through March 2005. In addition to initial measured values, DBH was calculated as the sum of the increment measured by the dendrometer band and the initial DBH of each tree. NAs in the data set are due to tree mortality.

A lowess smoothing algorithm (locally weighted least squares, http://www.itl.nist.gov/div898/software/dataplot/refman1/ch3/lowess_s.pdf) was applied to fill short gaps in the data set. Therefore, a small subset of the reported values were calculated but these values have not been marked in the data file.



Data File Documentation:







Data Columns: Description



id: tree identification number



T: transect number



Tag: tree tag number



common.name: tree common species identification



family: botanical family



genus: botanical genus



spp: scientific species identification



x: x coordinate location



y: y coordinate location



ht: visually estimated height



Ni: initial variable for sample stratification (7/1999), see page S59 in Rice et al. 2004



Bi: initial variable for sample stratification (7/1999), see page s59 in Rice et al. 2004



Ai: initial variable for sample stratification (7/1999), see page s59 in Rice et al. 2004



DOYsince1999.196 Column names are the Dendrometer Measurement dates in Julian days counting from 1/1/1999.



... The values reported are the Tree Diameter Measurement in centimeters.



DOYsince1999.489



...



DOYsince1999.2280





NAs in the data set are due to tree mortality.











Sample Data Record:



All of the biometry data are reported in lba_km67_dend_dbhs_filled_archive.txt.

id,T,Tag,common_name,family,genus,spp,x,y,ht,Ni,Bi,Ai,DOYsince1999.196,DOYsince1999.345,DOYsince1999.414,

DOYsince1999.445,DOYsince1999.489,DOYsince1999.551,DOYsince1999.592,DOYsince1999.634,

DOYsince1999.678,DOYsince1999.702,DOYsince1999.775,DOYsince1999.810,DOYsince1999.838,

DOYsince1999.873,DOYsince1999.914,DOYsince1999.950,DOYsince1999.992,DOYsince1999.1029,

DOYsince1999.1075,DOYsince1999.1103,DOYsince1999.1129,DOYsince1999.1159,DOYsince1999.1195,

DOYsince1999.1230,DOYsince1999.1271,DOYsince1999.1299,DOYsince1999.1327,DOYsince1999.1356,

DOYsince1999.1385,DOYsince1999.1412,DOYsince1999.1446,DOYsince1999.1481,DOYsince1999.1506,

DOYsince1999.1547,DOYsince1999.1581,DOYsince1999.1632,DOYsince1999.1657,DOYsince1999.1709,

DOYsince1999.1733,DOYsince1999.1762,DOYsince1999.1799,DOYsince1999.1825,DOYsince1999.1855,

DOYsince1999.1888,DOYsince1999.1982,DOYsince1999.2063,DOYsince1999.2099,DOYsince1999.2127,

DOYsince1999.2168,DOYsince1999.2197,DOYsince1999.2280



1004,1,4,mandioqueira rosa,Vochysiaceae,Qualea,dinizii,65,19,17,21,3,19.75,43.8,45.2,45.3,45.268,45.343,45.335,

45.35,45.387,45.39,45.388,45.391,45.394,45.399,45.405,45.41,45.411,45.389,45.414,45.401,45.521,45.415,45.407,

45.425,45.412,45.395,45.399,45.394,45.382,45.418,45.396,45.394,45.387,45.395,45.4,45.403,45.405,45.409,

45.406,45.403,45.379,45.412,45.414,45.416,45.42,45.446,45.415,45.428,45.424,45.407,45.383,45.415



1006,1,6,acariquara,Olacaceae,Minquartia,guianensis,75,13,20,3,2,19.75,43.8,44.7,44.5,44.469,44.508,44.483,44.526,

44.553,44.561,44.624,44.677,44.712,44.735,44.747,44.763,44.768,44.751,44.756,44.73,44.773,44.814,44.861,

44.913,44.939,44.98,44.966,44.98,45.001,45.015,45.047,45.113,45.134,45.154,45.236,45.286,45.318,45.328,

45.397,45.388,45.43,45.532,45.601,45.73,45.78,45.876,45.983,46.078,46.106,46.136,46.208,46.475



1007,1,7,quarubarana,Vochysiaceae,Erisma,uncinatum,74,19,46,44,44,19.75,106.8,106.2,106,106.121,106.302,

106.433,106.477,106.489,106.621,106.901,107.194,107.377,107.543,107.706,107.867,107.919,107.952,108.106,

108.31,108.483,108.648,108.718,108.794,108.976,109.241,109.262,109.3,109.301,109.34,109.487,109.595,

109.753,109.921,110.102,110.278,110.435,110.445,110.597,110.575,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA



...

4984,4,984,quarubarana,Vochysiaceae,Erisma,uncinatum,24,23,21,44,44,19.75,92.2,93.8,93.4,93.332,93.341,93.337,

93.345,93.483,93.463,93.372,93.433,93.397,93.371,93.375,93.375,93.374,93.363,93.355,93.368,93.369,93.376,

93.389,93.411,93.486,93.531,93.478,93.515,93.537,93.52,93.55,93.559,93.49,93.489,93.493,93.483,93.463,93.61,

93.505,93.491,93.543,93.503,93.514,93.515,93.517,93.521,93.52,93.606,93.562,93.521,93.462,93.494



**Line Breaks Added to Improve Readability



NAs in the data set are due to tree mortality.





Data Application and Derivation:

Stainless-steel dendrometer bands

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

Note: The dendrometers were placed on a random subsample of 993 trees, stratified by taxonomic family and size class. This sampling strategy ensured that all size classes and the full taxonomic diversity were sampled. Due to the stratified nature of the sample, a simple area expansion can not be applied. Please see Rice et al. 2004 for a more detailed explanation. Contact the investigators if you would like the full sample expansion information.

Process Description:

Data Acquisition Materials and Methods:

Dendrometer band increments, or expansion of the bands with tree growth, were measured every 4 - 6 weeks using electronic calipers, allowing detailed examination of variation in seasonal growth rates. For the dendrometer survey, dbh was determined as the addition of the increment measured by the dendrometer to the initial dbh for each tree. The 1000-tree dendrometry subsample can be scaled up to per unit area flux (G, in Mg C ha^-1 yr^-1) methods described in Rice et al. 2004.



Biomass Survey In July of 1999, we surveyed 20 ha of forest in the tower footprint. Over 2500 trees were measured, identified and mapped in four transects (1000m) east of the tower. Overall, trees were distributed among ~260 species within ~50 families. Common species encountered include Manilkara huberi, Coussarea racemosa, Sclerolobium chrysophyllum, Protium sp., Couratari stellata and Erisma uncinatum.



Stainless steel dendrometer bands were placed on a random subsample of 1000 trees, stratified by taxonomic family and size class, in December 1999. The 48 identified taxonomic families were divided into five size classes (10�<22.5, 22.5�<35, 35�<55, 55�<90, and >=90 cm dbh). We included all individual trees in the largest size class (>=90 cm dbh), because large trees account for a major portion of aboveground biomass in neotropical forests (Brown et al. 1995, Clark and Clark 1996). The rest of the sample was drawn randomly from the remaining size-class�taxonomic family categories. This sampling strategy ensures that all size classes and the full diversity of life-history traits (as represented by taxonomic family) were sampled, but avoids repetitively sampling the large number of stems in smaller subgroups that have more limited influence on carbon balance. We banded a large number of trees with the goal of obtaining high-resolution growth measurements that could be correlated to precipitation or seasonality with errors < 10%.

References:

Rice, A.H., Hammond, E.P., Saleska, S.R., Hutyra, L., Palace, M., Keller, M., de Carmargo, P.B., Portilho, K., Marques, D., Wofsy, S.C. 2004. Carbon Balance and Vegetation Dynamics in an Old-growth Amazonian Forest. Ecological Applications, 14 (4), s55-s71.



Brown, I. F., L. A. Martinelli, W. W. Thomas, M. Z. Moreira, C. A. C. Ferreira, and R. A. Victoria. 1995. Uncertainty in the biomass of Amazonian forests: an example from Rondonia, Brazil. Forest Ecology and Management 75: 175-189.



Clark, D. B., and D. A. Clark. 1996. Abundance, growth, and mortality of very large trees in a neotropical lowland rain forest. Forest Ecology and Management 80:235-244.

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