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Investigation:

CD-04 (Goulden / Rocha)

LBA Dataset ID:

LBA_CD04_DENDROMETRY

Originator(s):

1. FIGUEIRA, A.M.S.
2. MILLER, S.D.
3. DE SOUSA, C.A.D.
4. MENTON, M.C.
      5. MAIA, A.R.
6. DA ROCHA, H.R.
7. GOULDEN, M.L.

Point(s) of Contact:

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

Dataset Abstract:

A dendrometry study was conducted at the logged forest tower site, km 83 site, Tapajos National Forest, Para, Brazil over a period of 4 years following the implementation of a reduced impact logging management regime. Dendrometer bands were installed to measure diameter growth increments for 234 trees in an 18 ha plot adjacent to the eddy flux tower at the km 83 site. In addition to trees randomly selected for measurements within the plot prior to logging, a set of smaller diameter trees within or adjacent to gaps created during the logging treatment were added to the study in 2002. Selective logging is a major land use in the Amazon Basin. An accurate accounting of the effect of logging on regional carbon balances requires better information on the rates at which the logged forest recovers biomass. There is one comma-delimited data file with this data set.

Beginning Date:

2000-11-01

Ending Date:

2004-11-20

Metadata Last Updated on:

2011-01-21

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-04 Dendrometry, km 83 Tower Site, Tapajos National Forest, Brazil:  http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=989

Documentation/Other Supporting Documents:

LBA-ECO CD-04 Dendrometry, km 83 Tower Site, Tapajos National Forest, Brazil:  http://daac.ornl.gov/LBA/guides/CD04_Dendrometry.html

Citation Information - Other Details:

Figueira, A.M.S., S.D. Miller, C.A.D. de Sousa, M.C. Menton, A.R. Maia, H.R. da Rocha, and M.L. Goulden. 2011. LBA-ECO CD-04 Dendrometry, km 83 Tower Site, Tapajos National Forest, 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. doi:10.3334/ORNLDAAC/989

Keywords - Theme:

Parameter Topic Term Source Sensor
BIOMASS BIOSPHERE VEGETATION FIELD INVESTIGATION DENDROMETERS

Uncontrolled Theme Keyword(s):  BIOMASS SURVEY, DENDROMETERS, LOGGED SITE, TAPAJOS FOREST

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
Pará Western (Santarém) km 83 Logged Forest Tower Site -3.01700 -3.01700 -54.97070 -54.97070

Related Publication(s):

Figueira, A.M.E.S., S.D. Miller, C.A.D. de Sousa, M.C. Menton, A.R. Maia, H.R. da Rocha, and M.L. Goulden. 2008. Effects of selective logging on tropical forest tree growth. Journal of Geophysical Research-Biogeosciences 113.

GGoulden, M.L., S.D. Miller, H.R. da Rocha, M.C. Menton, H.C. de Freitas, A.M.E.S. Figueira, and C.A.D. de Sousa. 2004. Diel and seasonal patterns of tropical forest CO2 exchange. Ecological Applications 14(4):S42.

Miller, S.D., M.L. Goulden, M.C. Menton, H.R. da Rocha, H.C. Freitas, A.M.S Figueira, C.A.D. Sousa, 2004. Biometric and micrometeorological measurements of tropical forest carbon balance. Ecological Applications 14(4) Supplement: S114 -S126

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

Data are presented in one comma-separated ASCII file:

CD04_TNF_KM83_Dendrometer.csv



Missing data are assigned the value of -999.



Column Variable Units/format Variable description

1 GRID_BLOCK Block within 18-ha sample grid east of flux tower.

2 FAMILY Tree family

3 SPECIES Tree species

4 COMMON_NAME Species local name

5 TAG_NUMBER Unique tree identification

6 XLOC m Distance along the east-west axis from the block origin, in meters.

7 YLOC m Distance along the north-south axis from the block origin, in meters.

8 DBH_2000 cm Initial diameter (cm) at breast height (1.3 meters). For trees on transects this was measured in March 2000. For trees in the gaps this was measured in March or April of 2002.

9 DIAM_320 cm Diameter at breast height (1.3 m) on day 320 (day since 2000/01/01).

10 DIAM_xxx cm Diameter at breast height (1.3 m) on day xxx (day since 2000/01/01). Repeated.

11 DIAM_1823 cm Diameter at breast height (1.3 m) on day 1823 (day since 2000/01/01).

Missing values are -999

Example data record:



GRID_BLOCK,FAMILY,SPECIES,COMMON_NAME,TAG_NUMBER,XLOC,YLOC,DBH_2000,

DIAM_320,DIAM_364,DIAM_418,DIAM_459,DIAM_501,DIAM_536,DIAM_578,DIAM_634,>

DIAM_676,DIAM_718,DIAM_760,DIAM_802,DIAM_844,DIAM_886,DIAM_942,DIAM_998,

DIAM_1019,DIAM_1082,DIAM_1124,DIAM_1166,DIAM_1215,DIAM_1264,DIAM_1306,DIAM_1341,

DIAM_1383,DIAM_1429,DIAM_1481,DIAM_1531,DIAM_1579,DIAM_1622,DIAM_1656,DIAM_1726,

DIAM_1792,DIAM_1823





B05,Meliaceae,Carapa guianensis Aubl.,andiroba,217,5,7,35.5,

35.5,35.675,35.787,35.891,36.017,36.012,36.119,36.132,

36.132,36.132,36.173,36.177,36.203,36.242,36.267,36.266,

36.281,36.293,36.289,36.324,36.376,36.455,36.476,36.517,

36.55,36.613,36.701,36.786,36.791,36.79,36.81,

36.817,36.845

B05,Sapotaceae,Manilkara huberi (Ducke)Chev.,macaranduba,214,24,0,35.7,

35.7,35.752,35.835,35.876,35.912,35.926,35.929,35.943,

35.972,35.984,35.995,36.063,36.146,36.179,36.211,36.198,

36.179,36.233,36.234,36.255,36.26,36.265,36.265,36.264,

36.263,36.267,36.273,36.284,36.295,36.29,36.301,36.283,

36.273,36.244

B19,Lecythidaceae,Eschweilera coriacea (A.DC.)Mori,matamata preto, 827,14, 13,35.8,

35.8,35.831, 35.993,36.135, 36.286,36.391,36.429,36.555,

36.609,36.633,36.703,36.674,36.733,36.792,36.8,36.811,

36.897,37.0277,37.284,37.444,37.616,37.715,37.736,37.875,

38.049,38.246,38.423,38.946,38.895,38.892,38.916,39.004,

39.067,39.219



Data Application and Derivation:

The data collected as part of this data set, increments of diameter, can be used to estimate annual rates of above ground biomass productivity (Keller et al. 2001). Biometric measurements of productivity before and after logging can be compared to modeled results to refine our predictions of carbon dynamics in tropical forests under logging management.

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

We filtered the dendrometer data for the highest quality, most continuous data. Data from trees that died during the course of the study or were removed by logging or trees where the dendrometer itself was damaged and needed to be replaced during the study were excluded from the final data presented here.



Users may note that diameter measurements for Block: L05 / Common name: cocao / Tree_tag: 249 shows a somewhat erratic pattern of increases and decreases. These measurements were checked against the log books and verified as actual measurements and therefore were not removed from the data file.

Process Description:

Data Acquisition Materials and Methods:

This work was done at the Tapajos National Forest (TNF), a 6,000,000 ha conservation area of of humid tropical forest with a mean canopy height of 40 m. The study site is located 50 km south of Santarem, Para via an access road at km 83 of the Santarem-Cuiaba Highway. Mean annual precipitation of 1,911 mm has been recorded at a weather station in Belterra, Para 50 km from the study sites (INEMET 1992), with a dry season extending from August through November.



Our 18 ha study site was located adjacent to the eddy flux tower installed by the LBA-ECO Project and lay within a 3,200 ha reduced impact logging demonstration management area. The 700 ha logging area at km 83 was logged in three phases from August to December 2001, though most of the disturbance in the 18 ha study area occurred in September 2001. Reduced impact logging removed on average 2-3 trees per hectare with additional damage associated with landings and skid trails.



From the trees included in the biomass survey conducted in March 2000, (Menton et al., 2011), 390 individuals were randomly selected and fitted with dendrometer bands (Liming 1957). Dendrometers were installed on trees with diameters > 35 cm in November 2000, and on trees with diameters between 10 and 35 cm in February 2001. Additional dendrometers were installed on small trees located within or near newly created logging gaps in February 2002. At the installation of the dendrometers, diameter was assumed to be the same as was measured in the original biomass survey of March 2000. Change in tree circumference was measured at 6-week intervals from November 2000 through November 2004 using digital calipers. Change in circumference was converted to DBH (diameter at breast height) increment in centimeters and recorded.

References:

Figueira, A. M. e S., S. D. Miller, C. A. D. de Sousa, M. C. Menton, A. R. Maia, H. R. da Rocha, and M. L. Goulden (2008), Effects of selective logging on tropical forest tree growth, J. Geophys. Res., 113, G00B05, doi:10.1029/2007JG000577.



Keller, M, M Palace and G Hurtt. 2001. Biomass estimation in the Tapajos National Forest, Brazil- examination of sampling and allometric uncertainties. For. Ecol. Manage. 154: 371-382.doi:10.1016/S0378-1127(01)00509-6







Liming, FG 1957. Homemade dendrometers. J. Forestry 55: 575-577



Menton, M., M. Figueira, C.A.D. de Sousa, S.D. Miller, H.R. da Rocha, and M.L. Goulden. 2011. LBA-ECO CD-04 Biomass Survey, km 83 Tower Site, Tapajos National Forest, 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. doi:10.3334/ORNLDAAC/990

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