Data Package Metadata View Summary

Chemistry of Streamwater at the Hubbard Brook Experimental Forest, Watershed 7, 1995 - present

General Information

Data Package:
Local Identifier:	knb-lter-hbr.9.10
Title:	Chemistry of Streamwater at the Hubbard Brook Experimental Forest, Watershed 7, 1995 - present
Alternate Identifier:	hbr0009
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	Streamwater chemistry has been measured at the Hubbard Brook Experimental Forest since 1963. These data include volume-weighted, average, monthly concentrations of cations, anions, and pH measured in 9 watersheds. Monthly averages are calculated from samples collected at weekly intervals from a point above the stream gauging station. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.
Short Name:	Streamwater Chemistry WS7
Publication Date:	2016

Time Period

Begin:

1995

End:

2014

People and Organizations
Contact:	Information Manager, Hubbard Brook LTER [ email ]
Creator:	Likens, Gene E. (Cary Institute of Ecosystem Studies)

Data Entities
Data Table Name:	w7_stream_chem
Description:	Stream chemistry data of watershed 7 at Hubbard Brook LTER

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-hbr/9/10/f5f748bc66f6205d3a6ed53eba0e3034
Name:	w7_stream_chem
Description:	Stream chemistry data of watershed 7 at Hubbard Brook LTER
Additional Info:	DATA DESCRIPTION Volume-weighted, average, monthly concentrations in streamwater. Data are only used to calculate solute export for HBEF Watershed 7. Routine collections began in June 1995. These data are physically located at the Cary Institute of Ecosystem Studies, Robert S. Pierce Ecosystem Laboratory, Hubbard Brook Experimental Forest, W. Thornton, NH. NOTE REGARDING NITRATE DATA: After careful and exhaustive inter- and intra-laboratory tests we determined that nitrate concentrations in stream water were no longer remaining stable after collection, as they had in the past (see Buso, Likens and Eaton 2000). It is possible that the biological community in some streams of the HBEF has changed in recent years, affecting the nitrate concentration in complicated ways. While there was no systematic bias to the data, the situation occurred primarily during summer, when nitrate concentrations and streamflows are very low. Thus, we urge some caution in using the streamwater nitrate data collected since 2006, when nitrate stability was last confirmed. In 2013, new protocols were instituted to prevent decay of nitrate concentrations after collection and the problem has been resolved. There is no evidence that nitrate concentrations in the long-term precipitation record have been affected.
Number of Columns:	16

Table Structure

Object Name:

w7_stream_chem.txt

Character Encoding:

ASCII

Text Format:

Number of Header Lines:

Number of Foot Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:

0x2c

Table Column Descriptions

Column Name:

year

flow

NH4

SO4

NO3

PO4

SiO2

Definition:

watershed

year

month

total streamflow in mm/month (over any unit of area)

calcium concentration in mg/L

magnesium concentration in mg/L

potassium concentration in mg/L

sodium concentration in mg/L

total aluminum in mg/L

ammonium concentration in mg/L

sulfate concentration in mg/L

nitrate concentration in mg/L

chloride concentration in mg/L

phosphate concentration in mg/L (soluble-reactive phosphate)

silica concentration in mg/L (measured as silicate)

Storage Type:

Measurement Type:

nominal

dateTime

ratio

interval

ratio

Measurement Values Domain:

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	7
Definition	the number of the watershed is 7 throughout this dataset
Source

Format	YYYY
Precision	1

Format	MM
Precision	1

Unit	millimeterPerMonth
Precision	.001
Type	real

Unit	milligramPerLiter
Precision	.001
Type	real

Unit	milligramPerLiter
Precision	.001
Type	real

Unit	milligramPerLiter
Precision	.001
Type	real

Unit	milligramPerLiter
Precision	.001
Type	real

Unit	milligramPerLiter
Precision	.001
Type	real

Unit	milligramPerLiter
Precision	.001
Type	real

Unit	dimensionless
Precision	.01
Type	real

Unit	milligramPerLiter
Precision	.001
Type	real

Unit	milligramPerLiter
Precision	.001
Type	real

Unit	milligramPerLiter
Precision	.001
Type	real

Unit	milligramPerLiter
Precision	.0001
Type	real

Unit	milligramPerLiter
Precision	.001
Type	real

Missing Value Code:

Code	-3.000
Expl	Data missing or not taken

Code	-3.000
Expl	Data missing or not taken

Code	-3.000
Expl	Data missing or not taken

Code	-3.000
Expl	Data missing or not taken

Code	-3.000
Expl	Data missing or not taken

Code	-3.000
Expl	Data missing or not taken

Code	-3.000
Expl	Data missing or not taken

Code	-3.00
Expl	Data missing or not taken

Code	-3.000
Expl	Data missing or not taken

Code	-3.000
Expl	Data missing or not taken

Code	-3.000
Expl	Data missing or not taken

Code	-3.0000
Expl	Data missing or not taken

Code	-3.000
Expl	Data missing or not taken

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Package Usage Rights

This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data ("Data User" herein) is required to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study.

While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.

Keywords

By Thesaurus:
Hubbard Brook Ecosystem Study LTER	aluminum, ammonium, calcium, chemistry, chloride, flow, HBEF Watershed 7, HBR, Hubbard Brook LTER, magnesium, nitrate, pH, phosphate, potassium, silica, sodium, stream, sulfate, watershed
LTER Core Research Areas	disturbance, inorganic nutrients

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package

Description:

SAMPLING DESIGN

Samples are collected in acid-washed, deionized water-rinsed, polyethylene bottles, from a small waterfall above the stream gauging station, to avoid contamination from ponded debris or weir construction materials. The normal sampling interval is weekly, with more frequent samples taken at times of increased discharge. At low flow summer (drought) conditions, samples may be taken with a clean polyethylene syringe, from undisturbed standing pools in the stream channel.

Daily export values (in g/ha-mo) are derived by multiplying daily streamflow amounts (in mm) for watershed 7, by the concentration of solutes (in mg/L) in the WS-7 sample taken on that day. For periods between samples, the average chemistry of the previous and next discrete sample is used for a daily concentration value. Measured and estimated daily values are summed to produce monthly export, and export divided by total monthly streamflow to produce volume-weighted, average monthly concentrations for streamwater at HBEF WS-7.

In June 2013, after careful inter-laboratory comparisons, chemical analyses were transferred from the Cary Institute of Ecosystem Studies Lab to the USDA Forest Service Lab in Durham, NH. Samples are split into 3 aliquots for different analyses. Monomeric Aluminum is measured on an unfiltered-refrigerated aliquot using an automated Pyrocatechol Violet method. A filtered-refrigerated aliquot is acidified and analyzed for cations and metals using ICP-OES (USEPA 200.7). A filtered-frozen sample is used for measuring NH4 (USEPA 350.1 Rev. 2.0), PO4 (USEPA 365.1 Rev. 2.0), Anions (USEPA 300.1) , DOC (USEPA 450.1) and TDN (High Temperature Catalytic Oxidation with chemiluminescent N detection).

Citation:

Title:

Chemistry of precipitation, streamwater, and lakewater from the Hubbard Brook Ecosystem Study: a record of sampling protocols and analytical procedures

Publication Date:

2000

Author(s):

Individual:

D.C. Buso

Individual:

G.E. Likens

Individual:

J.S. Eaton

Report:

Report Number:

USDA Forest Service, Northeastern Research Station Gen. Tech. Rep. NE-275

Publisher:

Organization:

USDA Forest Service

Publication Place:

Newtown Square, PA

Total Pages:

52 pp.

Citation:

Title:

Thirty years of hydrometeorologic data at the Hubbard Brook Experimental Forest, New Hampshire

Publication Date:

1990

Author(s):

Individual:

C.A. Federer

Individual:

L.D. Flynn

Individual:

C.W. Martin

Individual:

J.W. Hornbeck

Individual:

R.S. Pierce

Report:

Report Number:

USDA Forest Service, Northeastern Research Station Gen. Tech. Rep. NE-141

Publisher:

Organization:

USDA Forest Service

Publication Place:

Newtown Square, PA

Total Pages:

44 pp.

Citation:

Title:

Biogeochemistry of a Forested Ecosystem

Publication Date:

1977

Author(s):

Individual:

G.E. Likens

Individual:

F.H. Bormann

Individual:

R.S. Pierce

Individual:

J.S. Eaton

Individual:

N.M. Johnson

Book:

Publisher:

Organization:

Springer-Verlag New York Inc.

Total Pages:

146 pp.

Citation:

Title:

Variation in streamwater chemistry throughout the Hubbard Brook Valley

Publication Date:

2006

Language:

english

Author(s):

Individual:

G.E. Likens

Individual:

D.C. Buso

Article:

Journal:

Biogeochemistry

Volume:

Page Range:

1-30

Citation:

Title:

Dilution and the elusive baseline

Publication Date:

2012

Language:

english

Author(s):

Individual:

G.E. Likens

Individual:

D.C. Buso

Article:

Journal:

Environmental science and technology

Volume:

Issue:

Page Range:

4382-4387

People and Organizations

Publishers:

Organization:

Hubbard Brook Experimental Forest LTER

Address:

234 Mirror Lake Road,

North Woodstock, NH 03262 USA

Phone:

(603) 726-8902 (voice)

Web Address:

http://www.hubbardbrook.org

Creators:

Individual:

Gene E. Likens

Organization:

Cary Institute of Ecosystem Studies

Address:

2801 Sharon Turnpike,

Millbrook, NY 12545 USA

Phone:

(845) 677-5343 (voice)

Contacts:

Position:

Information Manager, Hubbard Brook LTER

Address:

234 Mirror Lake Road,

North Woodstock, NH 03262 USA

Phone:

(603) 726-8902 (voice)

Email Address:

hbr-im@lternet.edu

Web Address:

http://www.hubbardbrook.org

Metadata Providers:

Organization:

Hubbard Brook Experimental Forest LTER

Address:

234 Mirror Lake Road,

North Woodstock, NH 03262 USA

Phone:

(603) 726-8902 (voice)

Web Address:

http://www.hubbardbrook.org

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period

Begin:

1995

End:

2014

Sampling Site:

Description:

HBEF watershed 7 (WS-7). Collected from a waterfall 5m above the stream gauging station at HBEF WS-7.

Site Coordinates:

Longitude (degree):

-71.767075

Latitude (degree):

43.927509

Project

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList' in ns 'http://www.xml-cml.org/schema/stmml-1.1' ('stmml:unitList')
        |     |     |___text '\n        '
        |     |     |___element 'unit' in ns 'http://www.xml-cml.org/schema/stmml-1.1' ('stmml:unit')
        |     |     |     |  \___attribute 'id' = 'millimeterPerMonth'
        |     |     |     |  \___attribute 'name' = 'millimeterPerMonth'
        |     |     |     |  \___attribute 'parentSI' = 'meterPerSecond'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description' in ns 'http://www.xml-cml.org/schema/stmml-1.1' ('stmml:description')
        |     |     |     |     |___text 'unit of streamflow'
        |     |     |     |___text '\n        '
        |     |     |___text '\n        '
        |     |     |___element 'unit' in ns 'http://www.xml-cml.org/schema/stmml-1.1' ('stmml:unit')
        |     |     |     |  \___attribute 'abbreviation' = 'mg/l'
        |     |     |     |  \___attribute 'constantToSI' = '0'
        |     |     |     |  \___attribute 'id' = 'milligramPerLiter'
        |     |     |     |  \___attribute 'multiplierToSI' = '0.001'
        |     |     |     |  \___attribute 'name' = 'milligramPerLiter'
        |     |     |     |  \___attribute 'parentSI' = 'kilogramPerCubicMeter'
        |     |     |     |  \___attribute 'unitType' = 'massDensity'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description' in ns 'http://www.xml-cml.org/schema/stmml-1.1' ('stmml:description')
        |     |     |     |     |___text 'unit of element concentration in\n          streamwater'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

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Data Package Metadata View Summary

Chemistry of Streamwater at the Hubbard Brook Experimental Forest, Watershed 7, 1995 - present

Data Entities

Data Table

DATA DESCRIPTION

Data Package Usage Rights

Keywords

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

SAMPLING DESIGN

Author(s):

Author(s):

Author(s):

Author(s):

Author(s):

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Chemistry of Streamwater at the Hubbard Brook Experimental Forest, Watershed 7, 1995 - present

+/- Data Entities

Data Table

DATA DESCRIPTION

+/- Data Package Usage Rights

+/- Keywords

+/- Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

SAMPLING DESIGN

Author(s):

Author(s):

Author(s):

Author(s):

Author(s):

+/- People and Organizations

+/- Temporal, Geographic and Taxonomic Coverage

+/- Project

+/- Additional Metadata

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Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

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Additional Metadata