NOTICE -- The LBA-ECO Project website is no longer being supported.  This archive is a snapshot, as it existed in 2013, of the LBA-ECO website, maintained by NASA Goddard Space Flight Center, and now archived at the ORNL DAAC.  Links to external websites may be inactive. Final data products from the LBA project can be found at the ORNL DAAC.
banner
banner banner banner banner banner banner
banner banner banner banner banner banner banner
home aboutlibrarynews archivecontacts banner

spacer
banner
Investigations
Overview
Abstracts & Profiles
Publications
Research Sites
Meetings
Synthesis Groups
LBA-HYDROMET
LBA-Air-ECO
Logistics
Overview
Field Support
Travel
Visa
Shipping
Data
  Overview
Find LBA Data
Investigator Checklist
Process & Policy
Documentation & Archive
Training & Education
  Overview
Activities Summary
T&E Goals
Student Opportunities
  Folha Amazônica
 
spacer

Investigation:

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

LBA Dataset ID:

ND02_WATER_CHEMISTRY_PARAGOMIN

Originator(s):

1. DAVIDSON, E.A.
2. MARKEWITZ, D.
      3. FIGUEIREDO, R.D.O.

Point(s) of Contact:

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

Dataset Abstract:

This dataset includes measurements of dissolved nutrient and organic carbon concentrations, as well as dissolved oxygen, alkalinity, conductivity, turbidity and pH from five streams located in mixed land use (crop fields, pastures, secondary vegetation and forest) and entirely forested landscapes in the state of Para. Stream samples were collected along two different periods: 1) weekly from August 1999 to July 2001; 2) monthly from April 2003 and October 2005. In addition water samples from rain collectors were collected for nutrient concentrations each two weeks.

Beginning Date:

1999-08-12

Ending Date:

2005-10-01

Metadata Last Updated on:

2012-02-29

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 Stream Water Chemistry, Paragominas, Para, Brazil: 1999-2005 :  http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1067

Documentation/Other Supporting Documents:

LBA-ECO ND-02 Stream Water Chemistry, Paragominas, Para, Brazil: 1999-2005 :  http://daac.ornl.gov/LBA/guides/ND02_Water_Chemistry_Paragominas.html

Citation Information - Other Details:

Davidson, E.A., D. Markewitz, and R. de Figueiredo. 2012.LBA-ECO ND-02 Stream Water Chemistry, Paragominas, 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/1067

Keywords - Theme:

Parameter Topic Term Source Sensor
COMBUSTION TERRESTRIAL HYDROSPHERE WATER QUALITY/WATER CHEMISTRY LABORATORY CARBON ANALYZER
DISCHARGE/FLOW TERRESTRIAL HYDROSPHERE SURFACE WATER FIELD INVESTIGATION STREAM GAUGE
NUTRIENTS TERRESTRIAL HYDROSPHERE WATER QUALITY/WATER CHEMISTRY LABORATORY ION CHROMATOGRAPH
OXYGEN TERRESTRIAL HYDROSPHERE WATER QUALITY/WATER CHEMISTRY FIELD INVESTIGATION OXYGEN ANALYZER
PH TERRESTRIAL HYDROSPHERE WATER QUALITY/WATER CHEMISTRY FIELD INVESTIGATION PH METER
TURBIDITY TERRESTRIAL HYDROSPHERE WATER QUALITY/WATER CHEMISTRY FIELD INVESTIGATION TURBIDITY METERS
WATER ION CONCENTRATION TERRESTRIAL HYDROSPHERE WATER QUALITY/WATER CHEMISTRY LABORATORY ION CHROMATOGRAPH
WATER TEMPERATURE TERRESTRIAL HYDROSPHERE WATER QUALITY/WATER CHEMISTRY FIELD INVESTIGATION TEMPERATURE SENSOR

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
  PARA EASTERN (BELEM) -2.20150 -3.19040 -47.27230 -47.66700

Related Publication(s):

Davidson, E.A., R.O. Figueiredo, D. Markewitz, and A.K. Aufdenkampe. 2010. Dissolved CO2 in small catchment streams of eastern Amazonia: A minor pathway of terrestrial carbon loss. JGR Biogeosciences. In press.

Figueiredo, R.O., D. Markewitz, E.A. Davidson, A.E. Schuler, O. Watrin, and P. Silva. 2010. Land-use effects on the chemical attributes of low-order streams in the eastern Amazon. Journal of Geophysical Research Vol. , No. 2010. In press.

Markewitz, D., E.A. Davidson, R.D.O. Figueiredo, R.L. Victoria, and A.V. Krusche. 2001. Control of cation concentrations in stream waters by surface soil processes in an Amazonian watershed. Nature 410(6830):802-805. Nature (London), England, v. 410(6830), p. 802-805, 2001.

Markewitz, D., J.C.F. Resende, L. Parron, M. Bustamante, C.A. Klink, R.D. Figueiredo, and E.A. Davidson. 2006. Dissolved rainfall inputs and streamwater outputs in an undisturbed watershed on highly weathered soils in the Brazilian cerrado. Hydrological Processes 20(12):2615-2639.

Markewitz, D., R.O. Figueiredo, and E. Davidson. 2006. CO2-driven cation leaching after tropical forest clearing. Journal of Geochemical Exploration 88(1-3):214-219.

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

Data are provided in two comma-delimited ASCII files:

ND02_Stream_Chemistry_Data_1999-2005.csv

ND02_Rain_Chemistry_Data_1999-2001.csv







Stream Chemistry sampling location information:



Site codes:

IG54 = Igarape Cinquenta e Quatro (five stations)

IG7 = Igarape do Sete (seven stations)

IGP = Igarape Pajeu ( three stations)

CP = Igarape Santa Maria and Igarape Arauai headwaters (four stations)



Site Code Latitude Longitude Site Name

IG54-1 3o 02' 8.91 S 47o 28' 18.89 W Igarape Cinquenta e Quatro, Station 1

IG54-2 3o 01' 16.41 S 47o 28' 17.94 W Igarape Cinquenta e Quatro, Station 2

IG54-3 2o 59' 38.18 S 47o 27' 31.32 W Igarape Cinquenta e Quatro, Station 3

IG54-4 2o 58' 43.24 S 47o 27' 02.19 W Igarape Cinquenta e Quatro, Station 4

IG54-5 2o 56' 50.38 S 47o 23' 25.67 W Igarape Cinquenta e Quatro, Station 5

IG7-1 3o 11' 25.27 S 47o 19' 30.41 W Igarape do Sete, Station 1

IG7-2 3o 09' 51.00 S 47o 19' 23.28 W Igarape do Sete, Station 2

IG7-3 3o 08' 6.39 S 47o 19' 40.20 W Igarape do Sete, Station 3

IG7-4 3o 07' 26.14 S 47o 19' 25.62 W Igarape do Sete, Station 4

IG7-5 3o 05' 34.80 S 47o 18' 49.58 W Igarape do Sete, Station 5

IG7-6 3o 04' 19.45 S 47o 18' 13.62 W Igarape do Sete, Station 6

IG7-7 3o 03' 49.57 S 47o 17' 19.85 W Igarape do Sete, Station 7

IGP-1 3o 07' 44.49 S 47o 16' 48.82 W Igarape Pajeu, Station 1

IGP-2 3o 05' 17.95 S 47o 16' 22.93 W Igarape Pajeu, Station 2

IGP-3 3o 04' 31.69 S 47o 16' 20.28 W Igarape Pajeu, Station 3

CP1-1 not provided not provided Igarape Santa Maria headwaters in Capitao Poco, Station 1

(not actually a stream but seeps of the headwaters).

Problems during data collection resulted in suspect values;

only pH and CO2 are reported for this site.

CP1-2 02o 12 '25.2 S 47o 21' 29.16 W Igarape Santa Maria headwaters in Capitao Poco, Station 2

CP2-1 not provided not provided Igarape Arauai headwaters in Capitao Poco, Station 1

(not actually a stream but seeps of the headwaters).

Problems during data collection resulted in suspect values;

only pH and CO2 are reported for this site.

CP2-2 02o 12' 33.0 S 47o 20' 19.0 W Igarape Arauai headwaters in Capitao Poco, Station 2





File contents and organization:



File #1:

ND02_Stream_Chemistry_Data_1999-2005.csv</b>

Col Variable name Variable Description

#

1. Site_code Site Code (see site descriptions and coordinates above):

IG54-1, IG54-2, IG54-3, IG54-4, IG54-5, IG7-1, IG7-2, IG7-3,

IG7-4, IG7-5, IG7-6, IG7-7, IGP-1, IGP-2, IGP-3, CP1-2, CP2-2

2. Sample_date Sample date (yyyy-mm-dd)

3. Dischg_m3_s Discharge in cubic meters per second; not calculated for IG54-5 prior to 2003

4. Turb Turbidity in FTU; not measured for IG54-5 prior to 2003

5. Temp_C Temperature in degrees Celsius; not reported for IG54-5 prior to 2003

6. O_sat Percent saturation of oxygen; not calculated for IG54-5 prior to 2003

7. Cond Conductivity in microsiemens per centimeter

8. Alk_uE Alkalinity in microequivalent

9. pH pH

10. Na_uE Sodium in microequivalent

11. K_uE Potassium in microequivalent

12. Ca_uE Calcium in microequivalent

13. Mg_uE Magnesium in microequivalent

14. NH4N_uE Ammonium in microequivalent

15. NO3N_uE Nitrate in microequivalent

16. PO4P_uE Phosphate in microequivalent

17. SO4_uE Sulfate in microequivalent

18. Cl_uE Chloride in microequivalent

19. DON_uM Dissolved organic nitrogen in micromoles per liter; not calculated for IG54-5 prior to 2003

20. DOC_uM Dissolved organic carbon in micromoles per liter

21. DIC_uM Dissolved inorganic carbon in micromoles per liter; not calculated for IG54-5 prior to 2003

22. CO2_ml Carbon dioxide in milliliter per liter of water; not calculated for IG54-5 prior to 2003








Missing values are represented as -9999.




File #2:

ND02_Rain_Chemistry_Data_1999-2001.csv</b>

Col Variable Variable Description

# Name

1. Site_code Site code: PGM = Paragominas Meteorological Station

2. Sample_date Sample date (yyyy-mm-dd)

3. pH pH

4. SO4_uE Sulfate in microequivalent, volume weighted mean (VWM) when possible

5. Cl_uE Chloride in microequivalent, volume weighted mean (VWM) when possible

6. Na_uE Sodium in microequivalent, volume weighted mean (VWM) when possible

7. Ca_uE Calcium in microequivalent, volume weighted mean (VWM) when possible

8. K_uE Potassium in microequivalent, volume weighted mean (VWM) when possible

9. Mg_uE Magnesium in microequivalent, volume weighted mean (VWM) when possible



Missing values are represented as -9999.

Note that all ions (Ca, K, Na, Mg, Cl, and SO4) are volume weighted means (VWM) when possible






Example data records:




File #1:

ND02_Stream_Chemistry_Data_2003-2005.csv



Site_code,Sample_date,Dischg_m3_s,Turb,Temp_C,O_sat,Cond,Alk_uE,pH,Na_uE,K_uE,Ca_uE,Mg_uE,NH4N_uE,NO3N_uE,PO4P_uE,SO4_uE,Cl_uE,DON_uM,DOC_uM,DIC_uM,CO2_ml,,,,,,,,,,,

CP1-1,2003-04-01,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,,,,,,,,,,,

CP1-1,2003-05-01,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,-4444,,,,,,,,,,,

....[records intentionally omitted]

CP1-2,2004-10-01,-9999,0.13,25.2,85.0,20.2,12,4.59,156.59,5.63,42.91,14.81,0,5.00,0,11.24,104.08,-9999,-9999,-9999,-9999,,,,,,,,,,,

CP1-2,2004-11-01,-9999,3.29,24.8,42.5,23.0,0,4.40,144.41,4.60,47.90,12.34,0,4.94,0,14.37,106.34,-9999,-9999,-9999,9.67,,,,,,,,,,,

CP1-2,2004-12-01,-9999,8.56,-9999,-9999,21.9,-9999,-9999,143.11,6.14,32.44,15.63,3.22,0,0,13.74,92.80,-9999,-9999,-9999,8.92,,,,,,,,,,,

....[records intentionally omitted]

IG54-2,2004-12-01,-9999,51.00,34.4,101.7,64.5,245,7.19,236.63,182.86,122.75,181.80,0,0,0,39.77,202.80,-9999,-9999,-9999,-9999,,,,,,,,,,,

IG54-2,2005-01-01,-9999,91.00,29.3,75.4,-9999,254,6.65,135.71,124.80,96.81,179.34,6.83,9.71,0,97.85,214.65,-9999,-9999,-9999,0.37,,,,,,,,,,,

IG54-2,2005-02-01,-9999,189.00,32.4,104.2,-9999,240,6.67,183.12,148.59,109.28,241.86,0,2.19,0,58.30,596.28,-9999,-9999,-9999,0.45,,,,,,,,,,,

IG54-2,2005-03-01,-9999,255.00,28.7,61.3,-9999,231,6.57,116.57,29.15,103.79,77.33,20.77,1.35,0,49.13,113.67,-9999,-9999,-9999,0.70,,,,,,,,,,,

IG54-2,2005-04-01,-9999,105.00,32.2,69.3,36.5,230,6.63,78.30,107.67,92.81,134.09,3.44,0,0,40.39,91.39,-9999,-9999,-9999,1.55,,,,,,,,,,,





File #2: ND02_Rain_Chemistry_Data_1999-2001.csv



Site_code,Sample_date,pH,SO4_uE,Cl_uE,Na_uE,Ca_uE,K_uE,Mg_uE

PGM,1999-08-12,-9999,5.05,59.39,29.23,9.09,39.28,7.07

PGM,1999-09-06,6.16,14.62,215.41,120.55,29.68,61.00,28.68

PGM,1999-09-14,5.66,5.79,100.34,48.19,8.08,24.13,9.37

PGM,1999-11-01,6.10,3.95,209.01,92.34,17.36,61.11,16.70

PGM,1999-11-29,5.07,8.88,74.48,21.99,8.75,10.31,5.65

PGM,1999-12-20,5.10,22.99,199.00,68.24,23.22,58.29,19.13

PGM,2000-01-03,5.16,2.08,18.16,22.37,6.66,4.43,2.25

PGM,2000-01-10,4.85,1.82,21.75,5.28,3.04,2.36,2.15

Data Application and Derivation:

These data in combination with rainfall and streamflow data provide essential information for nutrient budgets for differing land-uses. Moreover, stream chemistry data combined with land use class quantification at each catchment sector can be used to evaluate land use change effects on water chemistry.

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

Data have been reviewed and there are no known problems or expected revisions. Standard solutions (Environmental Research Associates, Arvada, CO) were used with all analyses for quality assurance. The main limitation was that discharge measurements could only be done once a month and in only a few stations.

Process Description:

Data Acquisition Materials and Methods:

Field Sampling:

Stream water grab samples were collected in previously acid washed 250-ml polypropylene bottles. Bulk precipitation was collected in high density polypropylene bottles using 16-cm funnels placed 1.5 m off the ground at two locations in the IG54 catchment. The maximum time of storage in the field was 14 days. No preservatives were used in the collection vessels. Bottles were filled to capacity to minimize headspace and were placed in cold storage (~4 degrees C) within a few hours of collection. Samples were filtered through 0.4 um polycarbonate filters (Millipore) and stored at 4 degrees C until analyses for the other chemical constituents in an EMBRAPA laboratory in the city of Belem, 300 km distance from Paragominas.



Field measurement:

At the time of sample collection, turbidity, pH, temperature, and dissolved oxygen were measured in situ by, respectively, a turbidity meter (Hanna, model HI93793), and a pH, temperature and oxygen meter (WTW, model Multiline P3). In a field laboratory in Paragominas, and after conductivity measurement (conductivity meter VWR, model L702674), they were analyzed for alkalinity by endpoint titrations with 1 mM HCl to pH 4.5.



Chemical analyses:

In the laboratory the samples were analyzed for dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), and total dissolved nitrogen (TDN) by combustion (Shimadzu TOC V CSN), and Cl, SO4, NO3, PO4, Ca, Mg, K, Na, and NH4, by ion chromatography (Dionex DX-120). Dissolved organic nitrogen (DON) was obtained by the difference between TDN and the sum of NO3 and NH4.



Stream discharge was estimated monthly on a subset of points from July 2004 to June 2005 by measuring cross sectional area and flow with a current meter (General Oceanic). This measurement was done at the most downstream sampling stations in each stream for which a good cross section could be obtained (IG54-5, IG7-6 and IGP-2).



For pC02 the water samples were collected from 20 cm below the stream surface using 60cc syringes. Syringes were transported to a field laboratory. 30 mL of water was injected into a serum bottle with 30 mL of CO2-free air and incubated in a water bath for gas and liquid phases to come into equilibrium. Headspace CO2 concentration was determined using LiCor IRGA. The pCO2 in the original streamwater sample was calculated, adjusting for temperature (Henry\'s law), acidity (bicarbonate chemistry), and correcting for fugacity.

References:

None.

Skip navigation linksHOME | ABOUT | LIBRARY | NEWS ARCHIVE | CONTACTS | INVESTIGATIONS | LOGISTICS | DATA |TRAINING & EDUCATION

NASA logo
ORNL DAAC
Get Acrobat Reader