Nitrate concentrations and 18O signal of Streamwater at the Hubbard Brook Experimental Forest, Watershed 6 2008
Nitrate concentrations and 18O signal of Streamwater at the Hubbard Brook Experimental Forest, Watershed 6 2008
Susana Bernal
Center for Advanced Studies of Blanes, Consejo Superior de Investigaciones Cientificas (CEAB-CSIC)
17300 Blanes
Lars Hedin
Princeton University
Department of Ecology and Evolutionary Biology
Princeton, NJ 08542
Gene E. Likens
Institute of Ecosystem Studies
2801 Sharon Turnpike
Millbrook, NY 12545
Stefan Gerber
University of Florida
Soil and Water Science Department
Gainesville, FL 32611
Don Buso
Institute of Ecosystem Studies
234 Mirror Lake Road
North Woodstock, NH 03262
This data set includes streamwater analysis of 18 Oxygen isotopes in nitrate in daily samples from watershed 6 during the spring of 2008.
KEYWORD SET: Hubbard Brook Ecosystem Study LTER
HBEF Watershed 6, HBR, Hubbard Brook LTER, isotope, nitrate, stream, watershed.
KEYWORD SET: LTER Core Research Areas
inorganic nutrients.
HBEF watershed 6 (WS6)
West bounding coordinate: -71.742990
East bounding coordinate: -71.735175
North bounding coordinate: 43.957070
South bounding coordinate: 43.949996
Daily stream water samples were collected from W6 before, during, and after the 2008 spring pulse of snowmelt discharge (from March 18, 2008 to May 5,2008; n= 50). Samples were kept at ambient temperature (on average less than 4 degrees C) and immediately frozen on arrival at the laboratory. Samples were thawed and filtered through pre-washed GF/F filters before laboratory analysis.
All water samples were analyzed for nitrate witha Dionex ionic chromatograph, and the δ18O-NO3− isotopic signatures were analyzed using the denitrifier method.
  • Bernal, S., Hedin, L.O., Likens, G.E., Gerber, S., and Buso, D.C.. 2012. Complex response of the forest nitrogen cycle to climate change. Proceedings of the National Academy of Sciences of the United States of America 109(9):3406-3411.
Data Use Policy

The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. Permission to use this dataset is granted to the Data User free of charge subject to the following terms:

1) Acceptable use. Use of the dataset will be restricted to academic, research, government or other not-for-profit professional purposes.

2) Redistribution. The data and metadata are provided for use by the Data User. The Data User will not redistribute the original Data Set or metadata to others without the explicit permission of the Principal Investigator.

3) Citation. It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly attribute the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. Citation should take the following general form: Creator, Year of Data Publication, Title of Dataset, Publisher, Dataset identifier.

Citation example: Holmes, R.T. 2012. Bird Abundances at Hubbard Brook (1969-2010) and on three replicate plots (1986-2000) in the White Mountain National Forest. Durham, NH. Hubbard Brook Data Archive [Database]. (23 July 2012)

4) Acknowledgment: The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed to its content. Acknowledgments should identify the supporting party, the party that received the support, and any identifying information such as grant numbers.

Acknowledgment example: Data on [topic] were provided by [name of PI] on [date]. 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, Newtown Square, PA. Significant funding for collection of these data was provided by [agency]-[grant number], [agency]-[grant number], etc.

5) Consultation and questions. Data users are strongly encouraged to consult with the Principal Investigator(s) who collected these data for further information. Also, when appropriate, Data Users should consider including the Principal Investigator as a collaborator and/or co-author in the use of these data.

6) Notification. The Data User will notify the Principal Investigator of any publication or derivative work based on the Data Set. The Data User will also provide the Principal Investigator and/or the administrator of the Hubbard Brook Ecosystem Study with a pdf or two reprints of any publication(s) resulting from use of the Data Set.

7) Disclaimer. While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.

8) Terms of Agreement. By accepting this Data Set, the Data User agrees to abide by the terms of this agreement. The Data Owner shall have the right to terminate this agreement immediately by written notice upon the Data User's breach of, or non-compliance with, any of its terms. The Data User may be held responsible for any misuse that is caused or encouraged by the Data User's failure to abide by the terms of this agreement.


Information Manager, Hubbard Brook LTER
234 Mirror Lake Road
North Woodstock, NH 03262

Phone: (603) 726-8902

Data file: W6stm_no3_2008.txt
Description: 2008 stream nitrate data for Watershed 6 at Hubbard Brook LTER
ColumnVariableDescriptionUnitsCoded?Missing value label
1WatershedWatershed numbernoneynone
2SampleDateDate of sample collectionYYYY-MM-DDnnone
3NO3ppbnitrate concentration in ppb N-NO3 partPerBillionnnone
4delta_18O-NO3delta 18 O in nitrate measured in parts per thousand (o/oo)perMilnnone


Variable: Watershed
Watershed 6