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hbr0122
Valley Plots Mineral Soil 1995
Mineral soil and forest floor depth for the Hubbard Brook Valley Plots, 1997 - 1998 Survey Data
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
Hubbard Brook Experimental Forest
LTER
234 Mirror Lake Road
North Woodstock
NH
03262
USA
(603) 726-8902
http://www.hubbardbrook.org
Thomas G.
Siccama
Yale School of Forestry and Environmental Studies
originator
Paul
Schwarz
associated researcher
Suzanne
Wapner
associated researcher
2015
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 core horizon depth data; tree inventory, soil chemistry data and other measurements are presented
in separate datasets.
forest floor
forests
HBEF Valleywide Plots
HBR
Hubbard Brook LTER
mineral soil
schwarz
soil
watersheds
Hubbard Brook Ecosystem Study
LTER
primary production
LTER Core Research Areas
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.
http://www.hubbardbrook.org/data/dataset.php?id=122
The 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.
-71.80620
-71.70220
43.9590
43.9140
1997-07-07
1998-08-17
Information Manager, Hubbard Brook LTER
234 Mirror Lake Road
North Woodstock
NH
03262
USA
(603) 726-8902
hbr-im@lternet.edu
http://www.hubbardbrook.org
Hubbard Brook Experimental Forest
LTER
234 Mirror Lake Road
North Woodstock
NH
03262
USA
(603) 726-8902
http://www.hubbardbrook.org
Hubbard Brook LTER
DATA DESCRIPTION
This dataset contains mineral soil depth, forest floor depth, and
sample locations for soil samples collected for element analysis from 257 plots of
the total 431 valley-wide plots that Paul Schwarz and others established between 1995 and 1998.
Data collected on these plots led to two publications and a
doctoral dissertation (see REFERENCES). Element analysis of soil samples, additional soils data
(soil depth, exchangeable cations, and texture) and tree data (species, condition, and for some tree ring increment measures and tree
height) were also measured on these plots and are presented in separate datasets.
SAMPLING DESIGN
Paul Schwarz and others collected these soil 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.
A map of the plot locations can be found here: http://hubbardbrook.org/watersheds/maps/images/schwarz_plot_map.jpg
FIELD SAMPLING METHODS
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. Four cores were taken at three locations in each plot (thus the
resulting 12 cores per plot); however, some plots have an additional sampling point
to compensate for very thin mineral soil conditions. Although the subset included
260 plots, only 257 plots are included in this dataset. The missing data is from
plot numbers 188, 189, and 346. If a sampling point was not located randomly due to
sampling constraints in the plot, it is noted in the comments section of the data table with an
explanation.
Spatial autocorrelation and sampling design in plant ecology
M.-J.
Fortin
P.
Drapeau
P.
Legendre
1989
Vegetation
83
209–222
Spatial patterns of abundance of northern hardwood-conifer tree
species in a forested valley in the White Mountains, New Hampshire,
USA
P.A.
Schwarz
2001
PhD Disseration
Cornell University
145
Structure and composition of three northern hardwood-conifer
forests with differing disturbance histories
schwarz
T.J.
Fahey
C.W.
Martin
T.G.
Siccama
A.S.
Bailey
2001
Forest Ecology and Management
144
201-212
Factors controlling spatial variation of tree species
abundance in a forested landscape
schwarz
fahey
C.E.
McCulloch
2003
english
Ecology
84(7)
1862-1878
valley_soil_min_ff
Mineral soil and forest floor depth for the Hubbard Brook Valley Plots
valley_soil_min_ff
ASCII
1
0
\r\n
column
0x2c
http://www.hubbardbrook.org/data/data_policy.php?target=valley_soil_min_ff.txt
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PLOT
Plot ID number
Plot number
UTM_EASTING
UTM Easting of plot location
meter
whole
UTM_NORTHING
UTM Northing of plot location
meter
whole
TRANSECT
Transect ID number where the plot is located
Transect ID number where the plot is located
DATE
Date sample was collected
YYYY-MM-DD
0000-00-00
Unkown date
SOIL_SAMPLE
Sample number
Sample number
BEARING
Compass bearing from plot center to sample location
degree
1
whole
-9999
Unknown value
DISTANCE
Distance from plot center to sample location
meter
1
whole
-9999
Unknown value
1_MIN_THICK
Mineral soil thickness for sample 1
centimeter
1
whole
-9999
Unknown value
2_MIN_THICK
Mineral soil thickness for sample 2
centimeter
1
whole
-9999
Unknown value
3_MIN_THICK
Mineral soil thickness for sample 3
centimeter
1
whole
-9999
Unknown value
4_MIN_THICK
Mineral soil thickness for sample 4
centimeter
1
whole
-9999
Unknown value
5_MIN_THICK
Mineral soil thickness for sample 5
centimeter
1
whole
-9999
Unknown value
1_FF_THICK
Forest floor thickness for sample 1
centimeter
1
whole
2_FF_THICK
Forest floor thickness for sample 2
centimeter
1
whole
3_FF_THICK
Forest floor thickness for sample 3
centimeter
1
whole
4_FF_THICK
Forest floor thickness for sample 4
centimeter
1
whole
-9999
Unknown value
5_FF_THICK
Forest floor thickness for sample 5
centimeter
1
whole
-9999
Unknown value
WOOD_IN_FF
Wood in forest floor
Wood in forest floor
Y
Yes there is wood in the forest floor
N
No there is not wood in the forest floor
COMMENTS
Comments
Comments about the sample