TITLE
Soil Chemistry for the Hubbard Brook Valley Plots, 1997 - 1998 Survey Data
PRINCIPAL INVESTIGATOR(s)
John J.
Battles
University of California, Berkeley
Environmental Science, Policy, and Management
137 Mulford Hall
Berkeley, CA 94720-3114
USA
University of California, Berkeley
Environmental Science, Policy, and Management
137 Mulford Hall
Berkeley, CA 94720-3114
USA
Tim
Fahey
Department of Natural Resources, Cornell University
104A Bruckner Hall
Ithaca, NY 14853
USA
Department of Natural Resources, Cornell University
104A Bruckner Hall
Ithaca, NY 14853
USA
OTHERS INVOLVED
Thomas G.
Siccama
Yale School of Forestry and Environmental Studies
Yale School of Forestry and Environmental Studies
Paul
Schwarz
Suzanne
Wapner
ABSTRACT:
The valley-wide plots are a grid of 431 sites along fifteen N–S transects established at 500-m intervals spanning the entire Hubbard Brook Valley. Multiple above- and below- ground attributes were measured between 1995 and 1998. This dataset includes soil chemistry data; tree inventory, additional soil data and other measurements are presented in separate datasets.
The valley-wide plots are a grid of 431 sites along fifteen N–S transects established at 500-m intervals spanning the entire Hubbard Brook Valley. Multiple above- and below- ground attributes were measured between 1995 and 1998. This dataset includes soil chemistry data; tree inventory, additional soil data and other measurements are presented in separate datasets.
KEYWORD SET: Hubbard Brook Ecosystem Study
LTER
forests, HBEF Valleywide Plots, HBR, Hubbard Brook LTER, inventory, schwarz, soil, soil chemistry, watersheds.
KEYWORD SET: LTER Core Research Areas
primary production.
BEGIN DATE
1997-07-07
END DATE
1998-08-17
LOCATION
The 260 plots in this dataset are a subset of 431
plots that are located across the entire Hubbard Brook Valley. Fifteen
N–S transects were established at 500-m intervals to span the entire
Hubbard Brook Valley. Along the transects, a regular array of 431
500-m2 circular plots was established at distance intervals of either
25 m, 100 m, or 200 m. The subset includes all plots from every other
transect. UTM coordinates of all plots are included in this dataset. A
map of the plot locations can be found in: Schwarz et al, 2003.
West bounding coordinate: -71.80620
East bounding coordinate: -71.70220
North bounding coordinate: 43.9590
South bounding coordinate: 43.9140
East bounding coordinate: -71.70220
North bounding coordinate: 43.9590
South bounding coordinate: 43.9140
DATA DESCRIPTION
This dataset contains soil pH, moisture, texture,
and cation exchange for soil samples collected from 260 plots of
the total 431 valley-wide plots that Paul Schwarz and others established
between 1995 and 1998. The dataset also contains soil chemistry
(element analysis) for 200 plots in the subset. Data collected
on these plots led to two publications and a
doctoral dissertation. Other soils data (soil depth and mineral
soil depth) and tree data (species, condition, and for some tree
ring increment measures and tree height) were also collected and are presented in separate datasets.
SAMPLING DESIGNPaul Schwarz and others collected this data on a
subset of the 431 plots that are located across the entire
Hubbard Brook Valley. The following methods for establishment of
the 431 plots, the selection process for the subset of 260
plots, and the soil sample collection are excerpted from Schwarz
et al 2003, page 1864 (see REFERENCES):
"Fifteen N–S transects were established at 500-m intervals to span the entire Hubbard Brook Valley. Along the transects, a regular array of 431 500-m2 circular plots was established at distance intervals of either 25 m, 100 m, or 200 m. The sampling layout and spacing of the plots was designed to facilitate the analysis of spatial patterns in the forest vegetation by utilizing a wide range of distance intervals between plots (Fortin et al. 1989)."
UTM coordinates of all plots are included in this dataset. Specific coring locations (bearing and distance from plot center) within each plot are presented in a separate dataset. A map of the plot locations can be viewed here: http://hubbardbrook.org/watersheds/maps/images/schwarz_plot_map.jpg
SAMPLE COLLECTION AND ANALYSIS"Fifteen N–S transects were established at 500-m intervals to span the entire Hubbard Brook Valley. Along the transects, a regular array of 431 500-m2 circular plots was established at distance intervals of either 25 m, 100 m, or 200 m. The sampling layout and spacing of the plots was designed to facilitate the analysis of spatial patterns in the forest vegetation by utilizing a wide range of distance intervals between plots (Fortin et al. 1989)."
UTM coordinates of all plots are included in this dataset. Specific coring locations (bearing and distance from plot center) within each plot are presented in a separate dataset. A map of the plot locations can be viewed here: http://hubbardbrook.org/watersheds/maps/images/schwarz_plot_map.jpg
Soil samples were taken from a subset of 260 plots that consisted of all the
plots from every other transect. Twelve soil cores (2
cm diameter) were collected at randomly chosen locations within
each plot. The forest floor material was separated from the
mineral soil, and 15cm of mineral soil was retained from each
core. In the laboratory, the samples from each plot were air
dried, sieved to separate the gravel fraction (2.0 mm diameter),
and then composited. The single composite sample from each plot
was used for all subsequent analyses. Mineral soil pH was
measured using a 2:1 water:soil suspension. Exchangeable cation
concentrations were measured using ammonium chloride
and mechanical vacuum extraction (Huntington et al. 1990).
Previous studies indicated that soils in the HBEF have low clay
contents (S. W. Bailey, personal communication). Therefore, we
expected most of the variation in particle size in the sand and
silt fractions. We measured particle size distribution by
adapting the methods of Gee and Bauder (1982). We first dispersed
a 50-g subsample of mineral soil with an aqueous solution of
Calgon detergent, then wet sieved the suspension through a
0.053-mm mesh sieve to remove silt and clay particles, and
finally dry sieved to separate sand particles into five size
classes.
REFERENCES
- Fortin, M.-J., Drapeau, P., and Legendre, P. 1989. Spatial autocorrelation and sampling design in plant ecology. Vegetation 83:209–222.
- Gee, G.W., and Bauder, J.W. Particle-size analysis. In [Eds.], Methods of soil analysis. Part I: physical and mineralogical methods, 383–411American Society of Agronomy– Soil Science Society of America.
- Huntington, T.G., Johnson, A.H., and Schwartzman, T.N. 1990. Mechanical vacuum extraction vs. batch equilibrium for estimation of exchangeable cations. Soil Science Society of America Journal 54:381–385.
- Schwarz, P.A. 2001. Spatial patterns of abundance of northern hardwood-conifer tree species in a forested valley in the White Mountains, New Hampshire, USA. PhD Disseration, Cornell University.
- Schwarz, P.A., Fahey, T.J., Martin, C.W., Siccama, T.G., and Bailey, A.S. 2001. Structure and composition of three northern hardwood-conifer forests with differing disturbance histories. Forest Ecology and Management 144:201-212.
- Schwarz, P.A., Fahey, T.J., and McCulloch, C.E. 2003. Factors controlling spatial variation of tree species abundance in a forested landscape. Ecology 84(7):1862-1878.
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.
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: valley_soil_chem
Description: Soil Chemistry for the Hubbard Brook Valley Plots
CODESDescription: Soil Chemistry for the Hubbard Brook Valley Plots
| Column | Variable | Description | Units | Coded? | Missing value label |
| 1 | PLOT | Plot ID number | none | y | none |
| 2 | UTM_EASTING | UTM Easting of plot location | meter | n | none |
| 3 | UTM_NORTHING | UTM Northing of plot location | meter | n | none |
| 4 | PH | pH | pH | n | none |
| 5 | MOISTURE_% | Soil moisture content | percent | n | none |
| 6 | OM_% | Soil organic matter fraction | percent | n | none |
| 7 | Cd | Cadmium concentration in soil | milliGramPerKilogram | n | -9999.999 |
| 8 | Cu | Copper concentration in soil | milliGramPerKilogram | n | -9999.999 |
| 9 | Ni | Nickel concentration in soil | milliGramPerKilogram | n | -9999.999 |
| 10 | Cr | Chromium concentration in soil | milliGramPerKilogram | n | -9999.999 |
| 11 | Co | Cobalt concentration in soil | milliGramPerKilogram | n | -9999.999 |
| 12 | Zn | Zinc concentration in soil | milliGramPerKilogram | n | -9999.999 |
| 13 | Mn | Manganese concentration in soil | milliGramPerKilogram | n | -9999.999 |
| 14 | Ca_% | Calcium fraction in soil | percent | n | -9999.999 |
| 15 | Ca | Calcium concentration in soil | milliGramPerKilogram | n | -9999 |
| 16 | Mg_% | Magnesium fraction in soil | percent | n | -9999.999 |
| 17 | Mg | Magnesium concentration in soil | milliGramPerKilogram | n | -9999 |
| 18 | Al_% | Aluminum fraction in soil | percent | n | -9999.999 |
| 19 | Al | Aluminum concentration in soil | milliGramPerKilogram | n | -9999 |
| 20 | Fe_% | Iron fraction in soil | percent | n | -9999.999 |
| 21 | Fe | Iron concentration in soil | milliGramPerKilogram | n | -9999 |
| 22 | P | Phosphorus concentration in soil | milliGramPerKilogram | n | -9999.999 |
| 23 | S | Sulfur concentration in soil | milliGramPerKilogram | n | -9999.999 |
| 24 | B | Boron concentration in soil | milliGramPerKilogram | n | -9999.999 |
| 25 | Ti_% | Titanium fraction in soil | percent | n | -9999.999 |
| 26 | Ti | Titanium concentration in soil | milliGramPerKilogram | n | -9999 |
| 27 | K_% | Potassium fraction in soil | percent | n | -9999.999 |
| 28 | K | Potassium concentration in soil | milliGramPerKilogram | n | -9999 |
| 29 | Na_% | Sodium fraction in soil | percent | n | -9999.999 |
| 30 | Na | Sodium concentration in soil | milliGramPerKilogram | n | -9999 |
| 31 | EXCH_Al | Exchangeable aluminum in soil | percent | n | -9.9999999999 |
| 32 | EXCH_As | Exchangeable arsenic in soil | percent | n | -9.9999999999 |
| 33 | EXCH_B | Exchangeable boron in soil | percent | n | -9.9999999999 |
| 34 | EXCH_Ca | Exchangeable calcium in soil | percent | n | -9.9999999999 |
| 35 | EXCH_Cd | Exchangeable cadmium in soil | percent | n | -9.9999999999 |
| 36 | EXCH_Co | Exchangeable cobolt in soil | percent | n | -9.9999999999 |
| 37 | EXCH_Cr | Exchangeable chromium in soil | percent | n | -9.9999999999 |
| 38 | EXCH_Cu | Exchangeable copper in soil | percent | n | -9.9999999999 |
| 39 | EXCH_Fe | Exchangeable iron in soil | percent | n | -9.9999999999 |
| 40 | EXCH_K | Exchangeable potassium in soil | percent | n | -9.9999999999 |
| 41 | EXCH_Mg | Exchangeable magnesium in soil | percent | n | -9.9999999999 |
| 42 | EXCH_Mn | Exchangeable manganese in soil | percent | n | -9.9999999999 |
| 43 | EXCH_Mo | Exchangeable molybenum in soil | percent | n | -9.9999999999 |
| 44 | EXCH_Ni | Exchangeable nickel in soil | percent | n | -9.9999999999 |
| 45 | EXCH_P | Exchangeable phosphorus in soil | percent | n | -9.9999999999 |
| 46 | EXCH_Pb | Exchangeable lead in soil | percent | n | -9.9999999999 |
| 47 | EXCH_Se | Exchangeable selenium in soil | percent | n | -9.9999999999 |
| 48 | EXCH_Sr | Exchangeable strontium in soil | percent | n | -9.9999999999 |
| 49 | EXCH_V | Exchangeable vanadium in soil | percent | n | -9.9999999999 |
| 50 | EXCH_Zn | Exchangeable zinc in soil | percent | n | -9.9999999999 |
| 51 | EXCH_BC | Sum of base cations in soil | milliEquivalentPerGram | n | -9.9999999999 |
| 52 | GRAVEL | Soil gravel fraction | percent | n | none |
| 53 | SANDSILTCLAY | Soil Sand Silt Clay fraction | percent | n | none |
| 54 | VERYCOARSESAND | Soil Very Coarse Sand fraction | percent | n | none |
| 55 | COARSESAND | Soil Coarse Sand fraction | percent | n | none |
| 56 | MEDIUMSAND | Soil Medium Sand fraction | percent | n | none |
| 57 | FINESAND | Soil Fine Sand fraction | percent | n | none |
| 58 | VERYFINESAND | Soil Very Find Sand fraction | percent | n | none |
| 59 | SILTCLAY | Soil Silt Clay fraction | percent | n | none |
| 60 | Date | Sample date | none | y | none |
Variable: PLOT
Description: | Plot where samples was collected |
Description: | Years during which sample was
collected |
Variable | Missing Value Code | Code Explanation |
Cd | -9999.999 | Not measured |
Cu | -9999.999 | Not measured |
Ni | -9999.999 | Not measured |
Cr | -9999.999 | Not measured |
Co | -9999.999 | Not measured |
Zn | -9999.999 | Not measured |
Mn | -9999.999 | Not measured |
Ca_% | -9999.999 | Not measured |
Ca | -9999 | Not measured |
Mg_% | -9999.999 | Not measured |
Mg | -9999 | Not measured |
Al_% | -9999.999 | Not measured |
Al | -9999 | Not measured |
Fe_% | -9999.999 | Not measured |
Fe | -9999 | Not measured |
P | -9999.999 | Not measured |
S | -9999.999 | Not measured |
B | -9999.999 | Not measured |
Ti_% | -9999.999 | Not measured |
Ti | -9999 | Not measured |
K_% | -9999.999 | Not measured |
K | -9999 | Not measured |
Na_% | -9999.999 | Not measured |
Na | -9999 | Not measured |
EXCH_Al | -9.9999999999 | Not measured |
EXCH_As | -9.9999999999 | Not measured |
EXCH_B | -9.9999999999 | Not measured |
EXCH_Ca | -9.9999999999 | Not measured |
EXCH_Cd | -9.9999999999 | Not measured |
EXCH_Co | -9.9999999999 | Not measured |
EXCH_Cr | -9.9999999999 | Not measured |
EXCH_Cu | -9.9999999999 | Not measured |
EXCH_Fe | -9.9999999999 | Not measured |
EXCH_K | -9.9999999999 | Not measured |
EXCH_Mg | -9.9999999999 | Not measured |
EXCH_Mn | -9.9999999999 | Not measured |
EXCH_Mo | -9.9999999999 | Not measured |
EXCH_Ni | -9.9999999999 | Not measured |
EXCH_P | -9.9999999999 | Not measured |
EXCH_Pb | -9.9999999999 | Not measured |
EXCH_Se | -9.9999999999 | Not measured |
EXCH_Sr | -9.9999999999 | Not measured |
EXCH_V | -9.9999999999 | Not measured |
EXCH_Zn | -9.9999999999 | Not measured |
EXCH_BC | -9.9999999999 | Not measured |