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Investigation:

ND-07 (Zepp / Bustamante)

LBA Dataset ID:

LBA_ND07_STREAMWATER_CHEMISTRY

Originator(s):

1. SILVA, J.S.O.
      2. BUSTAMANTE, M.M.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 reports on dissolved nutrient concentrations, as well as dissolved oxygen, alkalinity, conductivity, turbidity, and pH measured in water samples collected from nine streams located in the state of Brasilia, Brazil, between September, 2004 and December, 2006. Streams were located in different land cover types including natural (forest), rural (agricultural), and developed landscapes. In addition, water samples from wells, lysimeters, surface runoff, and precipitation were collected from four sites, 2 natural and 2 rural, and analyzed for nutrient concentrations. Streams were sampled every 2-4 weeks; rain water was collected approximately monthly during the wet season and once during a dry season; wells and lysimeters were sampled monthly; and surface runoff collections were event based. There are three comma-delimited data files with this data set.

Beginning Date:

2004-09-08

Ending Date:

2006-12-22

Metadata Last Updated on:

2011-09-23

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-07 Hydrochemistry of Natural and Developed Land Cover, Brasilia, Brazil :  http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1018

Documentation/Other Supporting Documents:

LBA-ECO ND-07 Hydrochemistry of Natural and Developed Land Cover, Brasilia, Brazil :  http://daac.ornl.gov/LBA/guides/ND07_Stream_Chemistry_Brasilia.html

Citation Information - Other Details:

Silva, J.S.O. and M.M.C. Bustamante. 2011. LBA-ECO ND-07 Hydrochemistry of Natural and Developed Land Cover, Brasilia, 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. http://dx.doi.org/10.3334/ORNLDAAC/1018

Keywords - Theme:

Parameter Topic Term Source Sensor
ALKALINITY BIOSPHERE WATER QUALITY/WATER CHEMISTRY FIELD INVESTIGATION ANALYSIS
CONDUCTIVITY HUMAN DIMENSIONS WATER QUALITY/WATER CHEMISTRY FIELD INVESTIGATION CONDUCTIVITY METERS
TURBIDITY BIOSPHERE WATER QUALITY/WATER CHEMISTRY FIELD INVESTIGATION TURBIDITY METERS
WATER ION CONCENTRATION BIOSPHERE WATER QUALITY/WATER CHEMISTRY LABORATORY ION CHROMATOGRAPH

Uncontrolled Theme Keyword(s):  ALKALINITY, CONDUCTIVITY, DISSOLVED ANIONS AND CATIONS, DISSOLVED ORGANIC CARBON, DISSOLVED OXYGEN, LYSIMETER COLLECTIONS, RAINWATER CHEMISTRY, STREAMWATER CHEMISTRY, SURFACE WATER RUNOFF, TURBIDITY, WELL WATER CHEMISTRY

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
  BRASILIA -15.55000 -15.93280 -47.60000 -48.18590

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

Data are presented in three comma-delimited ASCII files:

File #1: ND07_Streamwater_Chemistry_Brasilia_2004-2006.csv

File #2: ND07_Rainwater_Chemistry_Brasilia_2006.csv

File #3: ND07_Lysimeter_Wells_and_Surfacewater_Chemistry_Brasilia_2004-2006.csv





File #1: ND07_Streamwater_Chemistry_Brasilia_2004-2006.csv



Column Heading Units/format Description

1 Source Source of water sample

2 Date YYYY/MM/DD Collection date

3 Season Collection season either wet or dry with dry season defined as consecutive months with less than 200 mm rainfall per month

4 Stream Stream name

5 Latitude decimal degrees Latitude of stream location in decimal degrees

6 Longitude decimal degrees Longitude of stream location in decimal degrees

7 Sampling_point Sampling point along the course of the stream. Sampling points were separated by approximately 70 meters

8 Land_cover Vegetation type either Natural (forest); Rural (agricultural) or Urban

9 Hydrogen uM/L Concentration of hydrogen ions in micromoles per liter (uM/L)

10 Conductivity uS cm-1 C onductivity of the water sample in microSeimens per cm (uS cm-1)

11 Alkalinity uM/L Alkalinity of the water sample in micromoles CaCO3 per liter (uM CaCO3)

12 Dissolved_oxygen mg L-1 Concentration of dissolved oxygen in milligrams per liter (mg L-1)

13 NH4 uM/L Concentration of dissolved ammonium ions in micromoles per liter (uM/L)

14 NO2 uM/L Concentration of nitrite ions in micromoles per liter (uM/L)

15 NO3 uM/L Concentration of nitrate ions in micromoles per liter (uM/L)

16 K uM/L Concentration of potassium in micromoles per liter (uM/L)

17 Ca uM/L Concentration of calcium ions in micromoles per liter (uM/L)

18 Mg uM/L Concentration of magnesium ions in micromoles per liter (uM/L)

19 Na uM/L Concentration of sodium ions in micromoles per liter (uM/L)

20 Cl uM/L Concentration of chloride ions in micromoles per liter (uM/L)

21 SO4 uM/L Concentration of sulfate ions in micromoles per liter (uM/L)

22 PO4 uM/L Concentration of phosphate ions in micromoles per liter (uM/L)

23 TDN uM/L Concentration of total dissolved nitrogen in micromoles per liter (uM/L)

24 DOC uM/L Concentration of dissolved carbon in micromoles per liter (uM/L)

25 Turbidity NTU Water turbidity in Nephelometric Turbidity Units (NTU)



Data not available due to missing analyses or measurements are represented by -9999.

Measurements below the detection limit of the analytical instruments are represented by-5555.







Example Data Records:



Source,Date,Season,Stream,Latitude,Longitude,Sampling_point,Land_cover,Hydrogen,Conductivity,

Alkalinity,Dissolved_oxygen,NH4,NO2,NO3,K,Ca,Mg,Na,Cl,SO4,PO4,TDN,DOC,Turbidity



Stream,2004/09/08,Dry,Pitoco,-15.93111,-47.87775,1,Natural,9.55,3.76,

73.61,6.64,5.81,36.03,11.46,5.72,7.63,0.74,51.45,-9999,-9999,0.04,-9999,-9999,-9999

Stream,2004.09.23,Dry,Pitoco,-15.93111,-47.87775,1,Natural,21.88,3.37,

32.46,-9999,4.61,36.48,11.6,3.47,2.57,0.76,42.3,-9999,-9999,0.02,-9999,-9999,-9999

...

Stream,2004/09/09,Dry,Barreiro do Mato,-15.81564,-47.61056,1,Rural,7.76,4.63,

33.77,7.48,6.64,36.03,11.46,5.28,5.72,2.26,52.95,-9999,-9999,0.37,-9999,-9999,-9999

Stream,2004/10/13,Wet,Barreiro do Mato,-15.81564,-47.61056,1,Rural,45.71,6.87,

42.46,5.82,7.07,14.25,4.53,9.01,7.45,3.05,85.73,-9999,-9999,0.02,-9999, -9999, -9999

...

Stream,2004/09/15,Dry, Mestre D'Armas,-15.609806,-47.680139,1,Urban,1.74,16.72,

-9999,7.69,8.16,36.03,11.46,8.32,50.87,14.76,84.12,-9999,-9999,0.06,-9999,-9999,-9999

Stream,2004/09/29,Dry,Mestre D'Armas,-15.609806,-47.680139,1,Urban,3.24,16.71,

86.89,9.76,13.14,15.36,4.88,7.12,44.39,14.79,66.2, -9999,-9999,0.13,-9999,-9999,-9999

File #2: ND07_Rainwater_Chemistry_Brasilia_2006.csv



Column Heading Units/format Description

1 Source Source of water sample

2 Date YYYY/MM/DD Collection date

3 Season Collection season either wet or dry with dry season defined as consecutive months with less than 200 mm rainfall per month

4 Stream Stream name

5 Latitude decimal degrees Latitude of stream location in decimal degrees

6 Longitude decimal degrees Longitude of stream location in decimal degrees

7 Land_cover Vegetation type either Natural (forest) or Rural (agricultural)

8 Hydrogen uM/L Concentration of hydrogen ions in micromoles per liter (uM/L)

9 Conductivity uS cm-1 Conductivity of the water sample in microSeimens per cm (uS cm-1)

10 Alkalinity uM/L Alkalinity of the water sample in micromoles CaCO3 per liter (uM/L CaCO3)

11 NH4 uM/L Concentration of ammonium ions in micromoles per liter (uM/L)

12 NO2 uM/L Concentration of nitrite ions in micromoles per liter (uM/L)

13 NO3 uM/L Concentration of nitrate ions in micromoles per liter (uM/L)

14 K uM/L Concentration of potassium ions in micromoles per liter (uM/L)

15 Ca uM/L Concentration of calcium ions in micromoles per liter (uM/L)

16 Mg uM/L Concentration of magnesium ions in micromoles per liter (uM/L)

17 Na uM/L Concentration of sodium ions in micromoles per liter (uM/L)

18 Cl uM/L Concentration of chloride ions in micromoles per liter (uM/L)

18 SO4 uM/L Concentration of sulfate ions in micromoles per liter (uM/L)

20 PO4 uM/L Concentration of phosphate ions in micromoles per liter (uM/L)

21 TDN uM/L Concentration of total dissolved nitrogen in micromoles per liter (uM/L)

22 DOC uM/L Concentration of dissolved organic carbon in micromoles per liter (uM/L)



Data not available due to missing analyses or measurements are represented by -9999

Measurements below the detection limit of the analytical instruments are represented by-5555







Example Data Records:



Source,Date,Season,Stream,Latitude,Longitude,Land_cover,Hydrogen,Conductivity,Alkalinity,

NH4,NO2,NO3,K,Ca,Mg,Na,Cl,SO4,PO4,TDN,DOC



Rainfall,2006/02/08,Wet,Pitoco,-15.93111111,-47.87775,Natural,5.04,4.94,15.18,

5.51,2.02,0.46,15.08,3.75,1.49,4.62,5.76,0.62,-5555,43.64,104.3

Rainfall,2006/08/03,Wet,Pitoco,-15.93111111,-47.87775,Natural,4.79,4.02,15.26,

6.26,2.85,0.64,5.45,9.26,4.52,2.53,4.17,0.92,-5555,32.2,105.02

...

Rainfall,2006/02/02,Wet,Estanislau,-15.79488889,-47.62491667,Rural,4.57,6.8,18.61,

1.07,1.65,0.37,1.42,12.08,5.46,4.95,7.01,0.7, -5555, 47.24, 123.15

Rainfall,2006/02/15,Wet,Estanislau,-15.79488889,-47.62491667,Rural,0.66,5.12,26.59,

3.12,2.83,0.64,4.85,11.44,4.13,3.9,6.53,0.55,-5555,27.47,87.51

...



File #3: ND07_Lysimeter_Wells_and_Surfacewater_Chemistry_Brasilia_2004-2006.csv



Column Heading Units/format Description

1 Source Source of water sample: well, lysimeter or surface runoff collector

2 Date YYYY/MM/DD Collection date

3 Season Collection season either wet or dry with dry season defined as consecutive months with less than 30 mm rainfall per month

4 Stream Stream name

5 Latitude decimal degrees Latitude of stream location in decimal degrees

6 Longitude decimal degrees Longitude of stream location in decimal degrees

7 Sampling_point Sampling point: points 1 and 2 were located between 4 and 20 meters from the stream edge; points 3, 4 and 5 were located between 30 and 120 meters from the stream edge

8 Land_cover Vegetation type either Natural (forest) or Rural (agricultural)

9 Depth m Depth below the surface at which sample was collected in meters (m)

10 Hydrogen uM/L Concentration of hydrogen ions in micromoles per liter (uM/L)

11 Conductivity uS cm-1 Conductivity of the water sample in microSeimens per cm (uS cm-1)

12 Alkalinity uM/L Alkalinity of the water sample in micromoles CaCO3 per liter (uM/L CaCO3)

13 NH4 uM/L Concentration of ammonium ions in micromoles per liter (uM/L)

14 NO2 uM/L Concentration of nitrite ions in micromoles per liter (uM/L)

15 NO3 uM/L Concentration of nitrate ions in micromoles per liter (uM/L)

16 K uM/L Concentration of potassium ions in micromoles per liter (uM/L)

17 Ca uM/L Concentration of calcium ions in micromoles per liter (uM/L)

18 Mg uM/L Concentration of magnesium ions in micromoles per liter (uM/L)

19 Na uM/L Concentration of sodium ions in micromoles per liter (uM/L)

20 Cl uM/L Concentration of chloride ions in micromoles per liter (uM/L)

21 SO4 uM/L Concentration of sulfate ions in micromoles per liter (uM/L)

22 PO4 uM/L Concentration of phosphate ions in micromoles per liter (uM/L)



Data not available due to missing analyses or measurements are represented by -9999. Measurements below the detection limit of the analytical instruments are represented by-5555.







Example Data Records:



Source,Date,Season,Stream,Latitude,Longitude,Sampling_point,Land_cover,Depth,Hydrogen,

Conductivity,Alkalinity,NH4,NO2,NO3,K,Ca,Mg,Na,Cl,SO4,PO4



Well,2004/09/08,Dry,Pitoco,-15.93111111,-47.87775,1,Natural,-9999,5.37,

29.1,80.98,18.83,35.58,11.31,8.1,48.53,2.96,139.11,-9999,-9999,0.02

Well,2005/07/12,Dry,Pitoco,-15.93111111,-47.877751,Natural,-3,4.85,

9.23,55.57,6.95,3.47,2.06,5.85,2.86,0.97,18.52,19.27,1.56,-5555

...

Lysimeter,2004/12/20,Wet,Pitoco,-15.93111111,-47.87775,1,Natural,-0.5,5.48,

45.6,283.77,27.58,58.51,18.6,15.56,117.81,6.74,66.72,-9999,-9999,-5555

Lysimeter,2005/01/03,Wet,Pitoco,-15.93111111,-47.87775,1,Natural,-0.5,4.77,

9.9,86.56,10.32,13.98,4.45,9.99,35.62,7.25,31.88,-9999,-9999,0.27

..

Runoff, 2004/10/15,Wet, Barreiro do Mato,-15.81564,-47.610556,1,Rural,-9999,2.24,

50.3,95.41,30.13,14.7,4.68,199.02,34.16,27,88.93,-9999,-9999,6.87

Runoff,2004/1116,Wet, Barreiro do Mato,-15.81564,-47.610556,1, Rural,-9999,5.62,

48.3,-9999, .08,14.64,4.65,463.68,42.24,41.75,73.65,-9999,-9999,1.01

...

Data Application and Derivation:

These data in combination with rainfall and streamflow data provide essential information for nutrient budgets for differing land-uses. The extensive record allows for the assessment of interannual variations.



Note that neither steam flow nor precipitation data were provided with this data set. The water samples were collected under base flow conditions except for five collections made during the wet season under storm flow conditions (three times in natural streams (Mar/2006; Dec/2006; Jan/2007) and twice in rural streams (Dec/2006 and Jan/2007)). During sampling under storm flow events stream water level ranged from 67 to 92 cm for Barreiro do Mato stream while for Taquara and Pitoco streams the variations were 65 to 95 and 35 to 38 cm respectively (Silva et al., submitted 2011).

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

Data have been reviewed and there are no known problems or expected revisions. The detection limit for ion concentrations (NH4+, NO2-, NO3-, K-, Ca+2, Mg+2, Na+, Cl-, SO4- and PO4-) was 0.05 mg/l.

Process Description:

Data Acquisition Materials and Methods:

Field sampling:



Water was sampled from sites with three different types of land cover in Brasilia, Brazil: natural (forest), rural (agricultural), or urban. Natural stream sites were located at Pitoco, Taquara, and Vereda Grande. Rural sites included Barreiro do Mato, Capao da Onca, and Estanislau. The urban stream sites sampled were Atoleiro, Mestre D\'Armas, and the basin of the Pulador stream. Samples were collected from streams, rainwater, surface water run-off, and wells, during the wet and dry seasons.



Stream water was collected directly in the streams from all three different land cover types. Natural stream sites sampled were located at Pitoco, Taquara, and Vereda Grande, rural sites included Barreiro do Mato, Capao da Onca, and Estanislau, and urban stream sites sampled were Atoleiro and Mestre D\'Armas, in the city of Planaltina, and the basin of the Pulador, located near Brazlandia. 250-ml polypropylene bottles were used to collect the samples and immediately stored in iceboxes. Electrical conductivity, pH, and dissolved oxygen measurements were taken in situ.



Electrical conductivity and pH were logged with a multi-parameter sonde (OAKTON 10 series), while dissolved oxygen was measured using an oximeter (AP 64 - Fisher Scientific).



Pressure lysimeters were installed at 50 centimeter depth at the Pitoco and Taquara natural sites, and Barreiro do Mato and Estanislau rural sites. 60 bars of pressure were applied to the lysimeters using a vacuum pump, and collected soil water samples were stored in a glass bottle in situ until the next collection point.



Well water was sampled at the Pitoco and Taquara natural sites, and Barreiro do Mato and Estanislau rural sites.



Rainfall was collected from the Pitoco and Taquara natural sites, and Estanislau rural site. Rainfall collectors were composed of a 5 L polyethylene bottle which was painted with one layer of black paint and a second layer of white paint to reduce the possibility of algal growth and a 18-cm diameter polypropylene funnel which was covered by a fine nylon mesh (2 mm openings) to prevent the introduction of insects or other contaminants. Collectors were attached to wooden posts at 2.3 m above the ground in an open area.



Surface runoff was collected from the Pitoco and Taquara natural sites, and Estanislau and Barreiro do Mato rural sites. Collectors were wooden frames (1 m long x 2 m wide x 0.1 m height) installed in the ground so that 0.07 m of the height was buried. Collector sites were chosen where there was sufficient downward slope to allow for the drainage of surface runoff. PVC tubing was connected to the lower edge of the frame in order to channel the surface runoff into a polyethylene bottle, similar to the ones used in the rainfall collectors. This bottle was installed in the soil below the collector frame and connected to the lower edge by plastic tubing.



Chemical analyses:



In the laboratory, unfiltered aliquots were taken for alkalinity and turbidity, while aliquots filtered through cellulose acetate filters (nominal pore size 0.45 mm) were used for DOC, TDN and major ion analyses.



Turbidity was determined with a turbidimeter (HACH 2001 NA). Alkalinity determinations were by endpoint titrations with H2SO4 0.002 N to pH 4.5, DOC was determinate with a carbon analyzer (Shimadzu TOC 5000, Columbia, Maryland, USA), TDN with persulfate digestion (Koroleff 1983) and major ions by Liquid Ion Chromatography (Dionex DX 500, Sunnyvale, California, USA).

References:

Koroleff, F. 1983. Total & organic nitrogen. In: K. Grasshoff, M. Ehrardt and K. Kremling, Editors, Methods of Seawater Analysis, Verlag Chemie, Weinheim, pp. 162-173.





Silva, J.S.O. 2008. Características químicas da agua de córregos do Distrito Federal sob diferentes usos e cobertura do solo. PhD thesis, University of Brasília

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