Soil solution chemistry measurements at the snow cover experiment, Hubbard Brook Experimental Forest, 1997-1999
TITLE
Soil solution chemistry measurements at the snow cover experiment, Hubbard Brook Experimental Forest, 1997-1999
PRINCIPAL INVESTIGATOR(s)
Ross Fitzhugh
University of Illinois
Department of Plant Biology
Urbana, IL 61801
ABSTRACT:
The effect of soil freezing on soil cation and anion losses was assessed using zero-tension lysimeters placed in plots of the snow removal experiment at the Hubbard Brook Expermental Forest. Four plots were used in which one subplot accumulated snow cover at natural rates throughout the winter (C), while the second subplot had snow removed from the first snowfall through early February (F). Replicate lysimeters were installed below the Oa and within the Bs soil horizons and soil solution collected weekly for two winters (1997 - 1998 and 1998 - 1999). This dataset includes solution chemistry measurements for individual lysimeters collected during that time period.
KEYWORD SET: Hubbard Brook Ecosystem Study LTER
chemistry, frost, HBEF Snow Removal Experiment, HBR, Hubbard Brook LTER, leachate, lysimeter, snow, soil, soil water, water, winter.
KEYWORD SET: LTER Core Research Areas
disturbance, inorganic nutrients.
BEGIN DATE
1997-12-03
END DATE
1999-11-10
LOCATION
SM1
West bounding coordinate: -71.741392
East bounding coordinate: -71.741392
North bounding coordinate: 43.950408
South bounding coordinate: 43.950408
SM2
West bounding coordinate: -71.747275
East bounding coordinate: -71.747275
North bounding coordinate: 43.939433
South bounding coordinate: 43.939433
YB1
West bounding coordinate: -71.735058
East bounding coordinate: -71.735058
North bounding coordinate: 43.936356
South bounding coordinate: 43.936356
YB2
West bounding coordinate: -71.746986
East bounding coordinate: -71.746986
North bounding coordinate: 43.928469
South bounding coordinate: 43.928469
LOCATION DESCRIPTION
Four plots were selected within the Hubbard Brook Experimental Forest. Two plots were selected within sugar maple (SM) stands and 2 plots were selected within yellow birch (YB) stands. The stands contained > 80% basal area of the target species. At each plot, two subplots were used: one subplot accumulated snow cover at natural rates throughout the winter (C), while the second subplot had snow removed from the first snowfall through early February (F). Replicate zero-tension lysimeters were installed below the Oa and within the Bs soil horizons.
SAMPLING DESIGN
Lysimeters were constructed from PVC pipe that drained into 2-L polyethylene bottles. At each site, lysimeters were carefully installed in the wall of excavated soil pits, immediately below the Oa horizon and within the Bs horizon. Soil pits were backfilled to prevent accumulation of water and to eliminate freezing during winter months. Soil solution samples were collected at weekly to monthly intervals in acid-washed polyethylene bottles and refrigerated at 4oC. Samples are from individual lysimeters.
DATA DESCRIPTION
Samples are from individual lysimeters.
REFERENCES
  • Fitzhugh, R.D., Driscoll, C.T., Groffman, P.M., Tierney, G.L., Fahey, T.J., and Hardy, J.P. 2001. Effects of soil freezing disturbance on soil solution nitrogen, phosphorus, and carbon chemistry in a northern hardwood ecosystem. Biogeochemistry 56:215-238.
DATA ACCESS GUIDELINES
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]. http://hubbardbrook.org/data/dataset.php?id=81 (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.



CONTACT PERSON

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

Phone: (603) 726-8902
Email: hbr-im@lternet.edu

Data file: freezdat.txt
Description: Soil solution chemistry data for the snow cover experiment at Hubbard Brook LTER
Notes on Data: The data is physically located at the Department of Plant Biology, University of Illinois, Urbana, IL and was last updated in November, 2002.
ColumnVariableDescriptionUnitsCoded?Missing value label
1SampleIDUnique identifier for the sample based on several contributing factors. See Code Description for details.noneynone
2DateDate of samplingMM/DD/YYYYnnone
3Volumevolume of soil solution collected in mLmillilitern
-9999
4Hhydrogen ion in micromoles per litermicroMolePerLitern
-9999
5DICdissolved inorganic carbon in micromoles per litermicroMolePerLitern
-9999
6DOCdissolved organic carbon in micromoles per litermicroMolePerLitern
-9999
7NH4ammonium in micromoles per litermicroMolePerLitern
-9999
8Aliinorganic monomeric aluminum in micromoles per litermicroMolePerLitern
-9999
9Aloorganic monomeric aluminum in micromoles per litermicroMolePerLitern
-9999
10ANCacid neutralizing capacity in microequivalents per literdimensionlessn
-9999
11Clchloride in micromoles per litermicroMolePerLitern
-9999
12SO4sulfate in micromoles per litermicroMolePerLitern
-9999
13NO3nitrate in micromoles per litermicroMolePerLitern
-9999
14SiO2silica in micromoles per litermicroMolePerLitern
-9999
15Fflouride in micromoles per litermicroMolePerLitern
-9999
16Alppolymeric aluminum in micromoles per litermicroMolePerLitern
-9999
17Nasodium in micromoles per litermicroMolePerLitern
-9999
18Kpotassium in micromoles per liter microMolePerLitern
-9999
19Mgmagnesium in micromoles per liter microMolePerLitern
-9999
20Cacalcium in micromoles per litermicroMolePerLitern
-9999
21SRPsoluble reactive phosphorus in micromoles per liter microMolePerLitern
-9999
22DONdissolved organic nitrogen in micromoles per liter microMolePerLitern
-9999

CODES

Variable: SampleID
Description:
ID is made up of the following factors which fits the pattern of SM1COa1: Stand type - Sugar maple (SM) or yellow birch (YB); Plot - 1 or 2 for each stand type; Subplot (treatment) - natural (C) or snow removal (F); N (variable present in only some samples)- denotes supplemental lysimeters installed in second year; Soil horizon - Oa or Bs; Replicate lysimeter - 1 or 2

MISSING VALUE CODES
Variable
Missing Value Code
Code Explanation
Volume
-9999
Data missing or not taken at this time
H
-9999
Data missing or not taken at this time
DIC
-9999
Data missing or not taken at this time
DOC
-9999
Data missing or not taken at this time
NH4
-9999
Data missing or not taken at this time
Ali
-9999
Data missing or not taken at this time
Alo
-9999
Data missing or not taken at this time
ANC
-9999
Data missing or not taken at this time
Cl
-9999
Data missing or not taken at this time
SO4
-9999
Data missing or not taken at this time
NO3
-9999
Data missing or not taken at this time
SiO2
-9999
Data missing or not taken at this time
F
-9999
Data missing or not taken at this time
Alp
-9999
Data missing or not taken at this time
Na
-9999
Data missing or not taken at this time
K
-9999
Data missing or not taken at this time
Mg
-9999
Data missing or not taken at this time
Ca
-9999
Data missing or not taken at this time
SRP
-9999
Data missing or not taken at this time
DON
-9999
Data missing or not taken at this time