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Investigation:

CD-05 (Nepstad / Klink / Moutinho)

LBA Dataset ID:

CD05_REE_Fuel_Stick_Moisture

Originator(s):

1. Nepstad, Daniel Curtis
2. Miranda, Heloisa S.
3. Andrade, Sergio Viana de
4. Arce, Javier Alberto
5. Asner, Gregory Paul
6. Bamberger, Barbara
7. Belk, Elizabeth Leslie
8. Bishop, Joshua Thomas
9. Breyer, Lace Medeiros
10. Cardinot, Gina Knust
11. Carvalho Jr., Oswaldo de
12. Chermont, Larissa Steiner
13. Dias-Filho, Moacyr Bernardino
14. Diaz, Maria del Carmen Vera
15. Figueiredo, Ricardo de Oliveira
16. Guerrero, Jose Benito
17. Holbrook, Noel Michele
18. Kingerlee, Wendy
19. Klink, Carlos Augusto
      20. Lefebvre, Paul A.
21. Maklouf, Eduardo Jorge
22. Markewitz, Daniel
23. Merry, Frank David
24. Miranda, Antonio C.
25. Monaco, Luciana Magalhaes
26. Morton, Douglas C.
27. Moutinho, Paulo Roberto de Souza
28. Oliveira, Rafael Silva
29. Peters, Charles Merideth
30. Pinto, Flavia dos Santos
31. Quesada, Carlos Alberto Nobre
32. Ray, David G.
33. Rivero, Sergio
34. Santos, Alexandre J.B.
35. Schwalbe, Karen R.
36. Silva, Dulce Alves da
37. Solorzano, Luis Anibal Cardenas
38. Silva, Wanderley Rocha da

Point(s) of Contact:

Nepstad, Daniel Curtis (dnepstad@whrc.org)
Lefebvre, Paul A. ( paul@whrc.org )
Moutinho, Paulo Roberto de Souza (moutinho@amazon.com.br)
Ray, David G. (dray@whrc.org)

Dataset Abstract:

Moisture content of fuel sticks located in the forest understory, Rainfall Exclusion Experiment, Tapajos National Forest (LBA): This data set contains moisture contents for fuel sticks located in the forest understory. These measurements are taken at different times during the dry season. We report means and standard errors for various dates and times of day between 1998 and 2000 for the control and treatment plots. These data come from a rainfall exclusion experiment implemented in the Tapajos National Forest, Santarem, PA, Brazil. Two one-hectare plots were established to monitor the effects of water stress on the forest. Following a one year intercalibration period plastic panels were installed in the understory of the treatment to exclude rainfall during the rainy season.
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: Variable descriptions in the data file are incomplete.

Beginning Date:

1998-10-09

Ending Date:

2000-11-17

Metadata Last Updated on:

2011-12-27

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):

Access data via ORNL DAAC: http://daac.ornl.gov//LBA/guides/CD05_REE_Fuel_Stick_Moisture.html

Citation Information - Other Details:

Nepstad, D., P. Lefebvre, U.L. Da Silva, J. Tomasella, P. Schlesinger, L. Solorzano, P. Moutinho, D. Ray, and J.G. Benito. 2008. LBA-ECO CD-05 Rainfall Exclusion Experiment, Forest Understory Fuel Stick Moisture. 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
FIRE CHARACTERISTICS BIOSPHERE ECOLOGICAL DYNAMICS FIELD INVESTIGATION WEIGHING BALANCE
LITTER CHARACTERISTICS BIOSPHERE FOREST SCIENCE FIELD INVESTIGATION WEIGHING BALANCE

Uncontrolled Theme Keyword(s):  Dry-down, Fuel sticks, Moisture content, Rainfall exclusion, Tapajos National Forest, Understory moisture

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
Para Western (Santarem) km 67 Seca-Floresta Site -2.75000 -2.75000 -55.00000 -55.00000

Related Publication(s):

Alencar, A.A.C., L.A. Solorzano, and D.C. Nepstad. 2004. Modeling forest understory fires in an eastern Amazonian landscape. Ecological Applications 14(4):S139.

Nepstad, D., P. Lefebvre, U.L. Da Silva, J. Tomasella, P. Schlesinger, L. Solorzano, P. Moutinho, D. Ray, and J.G. Benito. 2004. Amazon drought and its implications for forest flammability and tree growth: a basin-wide analysis. Global Change Biology 10(5):704-717.

Nepstad, D.C., P. Moutinho, M.B. Dias, E. Davidson, G. Cardinot, D. Markewitz, R. Figueiredo, N. Vianna, J. Chambers, D. Ray, J.B. Guerreiros, P. Lefebvre, L. Sternberg, M. Moreira, L. Barros, F.Y. Ishida, I. Tohlver, E. Belk, K. Kalif, and K. Schwalbe. 2002. The effects of partial throughfall exclusion on canopy processes, aboveground production, and biogeochemistry of an Amazon forest. Journal of Geophysical Research-Atmospheres 107(D20):.

Ray, D., D. Nepstad, and P. Moutinho. 2005. Micrometeorological and canopy controls of fire susceptibility in a forested Amazon landscape. Ecological Applications 15(5):1664-1678. Contributing team(s): CD-05;LC-14

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

Data are provided in a single comma-delimited ASCII file: CD05_Fuel_Stick_Moisture.csv





Column Variable Name Variable Description (Draft, awaiting investigator verification)

Number

1 Plot_type Plot type: Control, Treatment

2 Date Sample date (mm/dd/yyyy)

3 TOD_class Time of day class: Time of day when sticks were weighed in the field.

Classes are:

AM = prior to 9:00am local time,

PM = after 4:00pm local time,

MID = 11:00-1:00 local time

4 N ? Number of samples included in the mean moisture content calculation

5 MC ? Mean moisture content in percent (%)

6 MC_stderr ? Standard error of mean moisture content







Example Data Records:

Plot_type,Date,TOD_class,N,MC,MC_stderr

Control,10/9/1998,AM,16,13.37,0.37

Control,10/11/1998,AM,16,13.55,0.31

Control,10/13/1998,AM,16,12.67,0.3

Control,11/5/1998,AM,16,12.18,0.84

Control,11/11/1998,AM,17,16.77,6.44

Control,11/13/1998,AM,16,9.24,0.95

Control,11/16/1998,AM,16,11.19,0.36

Control,11/18/1998,AM,16,10.99,0.72

Control,11/20/1998,AM,16,16,0.69

Data Application and Derivation:

These data can be used to predict forest flammability to fire, which is, in part, explained by variations in fuel moisture.

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

This is a short period of measurements. The major treatment-induced changes in the experiment were observed after these measurements were taken.

Process Description:

Data Acquisition Materials and Methods:

Fuel sticks are pine dowels manufactured to a forest science standard. They are 18 inches long and 1/2 inch in diameter, and were laid out in groups of six, each separated from its neighbors by a small gap. They were dried and weighed in the field, and their reference weight was recorded. The sticks were then placed on racks above the forest floor and allowed to absorb moisture as local conditions permit. We periodically weighed them in the field, at different times of day, as an indication of the moisture levels of the fuel layer on the forest floor.



Here we report means and standard errors for % moisture content at sampling dates between October 1998 and November 2000. The time of day that the measurement was acquired is given as \'AM\' before 9:00 AM, \'MID\' between 11:00 AM and 1:00 PM, and PM after 4:00 PM.

References:

None, other than the related publications.

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