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Investigation:

ND-02 (Davidson / Stone / Markewitz / Carvalho / Sa / Vieira / Moutinho / Figueiredo)

LBA Dataset ID:

ND02_NON_WOODY_BIOMASS

Originator(s):

1. DAVIDSON, E.A.
2. DE CARVALHO, C.J.R.
3. VIEIRA, I.C.G.
4. FIGUEIREDO, R.D.O.
5. MOUTINHO, P.R.
      6. ISHIDA, F.Y.
7. DOS SANTOS, M.T.P.
8. GUERRERO, J.B.
9. KALIF, K.
10. SABA, R.T.

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 provides biomass from small stems and non-woody vegetation measured from 1999 to 2005 in plots of a secondary-growth forest fertilization experiment located 6.5-km northwest of the town of Paragominas, Para, Brazil. In the 6-year old secondary-growth forest, fertilizer was applied to selected plots in January 2000 and February 2001. Biomass from trees with diameters less than or equal to 2cm as well as grasses, herbs,vines and dead material was measured in November 1999 and diameters were remeasured in June 2000, June 2001, July 2003, July 2004, and July 2005. All data are provided in a single comma-separated file. The site was divided into three blocks, with four treatment plots (each 20m x 20m) located in each block (3 reps x 4 treatments = 12 plots). Three of the twelve plots were fertilized with nitrogen (100 kg N/ha as urea); three were fertilized with phosphorus (50 kg P/ha as superphosphate); three were fertilized with both nitrogen and phosphorus. The remaining three plots were not fertilized and served as the experimental control.

Beginning Date:

1999-11-01

Ending Date:

2005-07-31

Metadata Last Updated on:

2012-09-14

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 ND-02 Secondary Forest Small Stem, Non-Woody Biomass, Para, Brazil: 1999-2005:  http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1115

Documentation/Other Supporting Documents:

LBA-ECO ND-02 Secondary Forest Small Stem, Non-Woody Biomass, Para, Brazil: 1999-2005:  http://daac.ornl.gov/LBA/guides/ND02_Non_Woody_Biomass.html

Citation Information - Other Details:

Davidson, E.A., C.J.R. de Carvalho, I.C.G. Vieira, R.D.O. Figueiredo, P.R. Moutinho, F.Y. Ishida, M.T.P. dos Santos, J.B. Guerrero, K. Kalif, R.T. Saba. 2012. LBA-ECO ND-02 Secondary Forest Small Stem, Non-woody Biomass, Para, Brazil: 1999-2005. 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/1115

Keywords - Theme:

Parameter Topic Term Source Sensor
BIOMASS BIOSPHERE VEGETATION VEGETATION SURVEY STEEL MEASURING TAPE
FOREST COMPOSITION/VEGETATION STRUCTURE BIOSPHERE VEGETATION VEGETATION SURVEY HUMAN OBSERVER

Uncontrolled Theme Keyword(s):  LYSIMETERS, NON-WOODY BIOMASS, SECONDARY FOREST, TROPICAL FORESTS, WATERSHEDS

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
Pará Eastern (Belém) Paragominas -2.98300 -2.98300 -47.51600 -47.51600

Related Publication(s):

Davidson, E.A., C.J.R. de Carvalho, I.C.G. Vieira, R.O. Figueiredo, P.R. Moutinho, F.Y. Ishida, M.T.P. dos Santos, J.B. Guerrero, K. Kalif, and R.T. Saba. 2004. Nitrogen and phosphorus limitation of biomass growth in a tropical secondary forest. Ecological Applications 14(4):S150-S163. doi:10.1890/01-6006.

Siddique, I., I.C.G. Vieira, S. Schmidt, D. Lamb, C.J.R. Carvalho, R.D. Figueiredo, S. Blomberg, and E.A. Davidson. 2010. Nitrogen and phosphorus additions negatively affect tree species diversity in tropical forest regrowth trajectories. Ecology 91(7):2121-2131.

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

These data are provided as a single comma-delimited ASCII file: ND02_Biomass_small_stems_nonwoody_life_forms_1999_2005.csv





Column Heading Units/format Explanation

1 Treatment Experimental treatment: control; nitrogen addition; nitrogen and phosphorus addition or phosphorus addition,,,,,,

2 Life_form Biomass measurements were made for three non-woody life forms: grasses; vines and herbs as well as woody stems with diameters less than 2 cm and dead material

3 Block Sampling block identification

4 Plot Plot identification each block had four plots

5 Biomass_Nov99 Mg biomass/ha Biomass in the sampling location measured in Nov 1999 reported in megagrams biomass per hectare

6 Biomass_Jun00 Mg biomass/ha Biomass in the sampling location measured in June 2000 reported in megagrams biomass per hectare

7 Biomass_Jun01 Mg biomass/ha Biomass in the sampling location measured in June 2001 reported in megagrams biomass per hectare

8 Biomass_Jul03 Mg biomass/ha Biomass in the sampling location measured in July 2003 reported in megagrams biomass per hectare

9 Biomass_Jul04 Mg biomass/ha Biomass in the sampling location measured in July 2004 reported in megagrams biomass per hectare

10 Biomass_Jul05 Mg biomass/ha Biomass in the sampling location measured in July 2005 reported in megagrams biomass per hectare



missing data is represented by -9999





Example Data Record:

Header records omitted.

Control ,grass,B1,P3,0.23,1.06,0.55,1.3,0.31,0.57

Control ,grass,B2,P4,1.04,1.09,0.35,0.24,0.31,0.62

Control ,grass,B3,P4,0.52,0.33,0.98,0.16,0,0.29

Control ,vines,B1,P3,2.83,3.09,0.92,1.43,1.35,0.19

Control ,vines,B2,P4,0.16,0.08,1.29,0.56,0.83,0.84

Control ,vines,B3,P4,0.84,2.83,1.68,2.69,1.11,0.24

.....

N,small wood,B3,P3,2.46,0.7,0,3.94,1.09,0.1

N,dead,B1,P1,1.33,0.56,1.35,0.11,0.22,1.33

N,dead,B2,P2,0.9,0.17,0.71,1.3,0.49,2.07

N,dead,B3,P3,1.74,0.52,0.87,1.22,0.71,2.82

N+P,grass,B1,P4,0.94,2.62,4.35,3.19,2.51,1.42

N+P,grass,B2,P1,0.61,3.65,6.1,7.53,3.14,1.64

N+P,grass,B3,P1,0.19,1.27,3.45,7.19,1.01,0.6

N+P,vines,B1,P4,0.1,0.34,0.04,0,0.16,0.64

Data Application and Derivation:

Understanding secondary successional processes in Amazonian terrestrial ecosystems is becoming increasingly important as continued deforestation expands the area that has become secondary forest, or at least has been through a recent phase of secondary forest growth. Most Amazonian soils are highly weathered and relatively nutrient poor, but the role of nutrients as a factor determining successional processes is unclear. Soils testing and chronosequence studies have yielded equivocal results regarding the possible role of nutrient limitation. The amount of biomass accumulating in non-woody vegetation and small stems (less than or equal to 2 cm dbh) has rarely been reported for a successional sequence in a tropical forest ecosystem.

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

The data set was examined for outlier measurements that may have been due to clerical errors in data entry.

Process Description:

Data Acquisition Materials and Methods:

Fertilizer was applied to the plots, as described below, in January 2000 and February 2001. Biomass were remeasured in May 2000, June 2001, July 2002, July 2004, and July 2005.



The study site was a 6-year old secondary forest when the experiment began in 1999. The site was divided into 3 blocks, with four treatment plots (each 20m x 20m) located in each block (3 reps x 4 treatments = 12 plots). Three of the twelve plots were fertilized with nitrogen (100 kg N/ha as urea); three were fertilized with phosphorus (50 kg P/ha as superphosphate); three were fertilized with both nitrogen and phosphorus. The remaining three plots were not fertilized and served as the experimental control.



The biomass of plants less than 2 cm dbh was measured destructively in two miniplots (2 by 1 m) in each plot. All aboveground plant parts were harvested and were separated by life-form (grass, herb, shrub, tree, and dead material). Samples were dried at 60 degrees C before weighing.

References:

none cited

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