Soil Depth Statistics for the Hubbard Brook Valley, 1995 - 1998 Survey Data
TITLE
Soil Depth Statistics for the Hubbard Brook Valley, 1995 - 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
Tim Fahey
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
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 depth 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, schwarz, soil, statistics, watersheds.
KEYWORD SET: LTER Core Research Areas
primary production.
BEGIN DATE
1995-01-01
END DATE
1998-12-31
LOCATION
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.
West bounding coordinate: -71.80620
East bounding coordinate: -71.70220
North bounding coordinate: 43.9590
South bounding coordinate: 43.9140
DATA DESCRIPTION
This dataset contains soil depth summary statistics of the 431 valley-wide plots that Paul Schwarz and others established between 1995-1998. Other soils data (soil chemistry, exchangeable cations, and texture) and tree data (species, condition, and for some tree ring increment measures and tree height) were taken on these plots and are presented in separate datasets.
SAMPLING DESIGN
Twenty-five soil depth measurements (cm) were taken at 1m intervals across the E-W diameter of each plot including the center point. If the sample size for a plot is less than 25 it is because one or more sample points fell on a rock, log, or streambed.
A map of the plot locations can be viewed here: http://hubbardbrook.org/watersheds/maps/images/schwarz_plot_map.jpg
REFERENCES
  • 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.



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_depths
Description: Soil Depth Statistics for the Hubbard Brook Valley
ColumnVariableDescriptionUnitsCoded?Missing value label
1PLOTPlot ID numbernoneynone
2UTM_EASTINGUTM Easting of plot locationmeternnone
3UTM_NORTHINGUTM Northing of plot locationmeternnone
4NNumber of soil depth samples per plotnoneynone
5MEANMean soil depthcentimeternnone
6VARIANCEVariance of soil depthcentimeternnone
7SDStandard deviation of soil depthcentimeternnone
8CVCoefficient of variation of soil depthpercentnnone
9MEDIANMedian soil depthcentimeternnone
10MINMinimum soil depthcentimeternnone
11MAXMaximum soil depthcentimeternnone
12RANGERange of soil depthcentimeternnone
13SKEWNESSSkewness of soil depthpercentnnone
14SEStandard error of soil depthcentimeternnone

CODES

Variable: PLOT
Description:
Plot number
Variable: N
Description:
Number of soil depth samples per plot