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hbr0142
Veg Inventory WS1 2006
Forest Inventory of a Calcium Amended Northern Hardwood Forest: Watershed 1, 2006, Hubbard Brook Experimental Forest
John J.
Battles
University of California,
Berkeley
Environmental Science, Policy, and Management
137 Mulford Hall
Berkeley
CA
94720-3114
USA
(510) 643-0684
Charles
Driscoll
Department of Civil and Environmental Engineering,
Syracuse University
151 Link Hall
Syracuse
NY
13244
USA
Scott
Bailey
USDA Forest Service, Hubbard Brook Experimental
Forest
234 Mirror Lake Road
North Woodstock
NH
03262
USA
Joel
Blum
University of Michigan
Department of Earth and Environmental Sciences
1100 N Univ Ave
Ann Arbor
MI
48109
USA
Don
Buso
Institute of Ecosystem Studies, Hubbard Brook
Experimental Forest
234 Mirror Lake Road
North Woodstock
NH
03262
USA
Tim
Fahey
Department of Natural Resources, Cornell
University
104A Bruckner Hall
Ithaca
NY
14853
USA
Melany
Fisk
Miami University
Department of Biology
160 Pearson Hall
Oxford
OH
45056
USA
Peter
Groffman
Institute of Ecosystem Studies
Box AB
Millbrook
NY
12545
USA
Chris
Johnson
Department of Civil and Environmental Engineering,
Syracuse University
151 Link Hall
Syracuse
NY
13244
USA
Gene
Likens
Institute of Ecosystem Studies
Box AB
Millbrook
NY
12545
USA
Hubbard Brook Experimental Forest
LTER
234 Mirror Lake Road
North Woodstock
NH
03262
USA
(603) 726-8902
http://www.hubbardbrook.org
Natalie
van Doorn
associated researcher
2015
In order to evaluate the role of Ca
supply in regulating the structure and function
of base-poor forest and aquatic ecosystems, the
Ca content of soil was increased through the
application of wollastonite (CaSiO3) in October
1999. Forest inventory surveys were initiated in 1996 and repeated
at 5 year intervals. This data set includes 2006 inventory
measurements.The data consists of a total inventory of all
trees >=10 cm diameter-at-breast-height (dbh) on the whole of
the watershed (11.8 ha), as measured in each of the 200 25 m x
25 m plots. Trees >=2 to <=10 cm dbh were subsampled using
a 3 meter wide strip along one edge of each 25 m x 25 m plot.
With the addition of tree tags in 2006 on all trees >=10 cm dbh,
tracking of individual trees is now possible.
biomass
calcium
diameter breast height
forests
HBEF Watershed 1
HBR
Hubbard Brook LTER
inventory
trees
vegetation
watersheds
Hubbard Brook Ecosystem Study
LTER
disturbance
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=142
Watershed 1 is an 11.8 ha watershed
extending from the weir at 488 m to the ridge at
747m.
-71.730866
-71.725832
43.959356
43.952121
488
747
meter
2006
2006
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
LOCATION DESCRIPTION
In order to evaluate the role of Ca
supply in regulating the structure and function
of base-poor forest and aquatic ecosystems, the
Ca content of soil was increased through the
application of wollastonite (CaSiO3) in October
1999. A link to more information about the study can be
found in ADDITIONAL RESOURCES
SAMPLING BACKGROUND
Surveys were initiated in 1996 and
repeated at 5 year intervals after that.
Repeated inventory at 5 year intervals is
anticipated to continue. The data in this
dataset were collected in the summer of 2006.
The watershed is forested by typical northern
hardwood species (sugar maple, beech and yellow
birch) on the lower 90 % of its area, and by a
montane boreal transition forest of red spruce,
balsam fir and white birch on the highest 10%.
Surveying techniques were used in 1996 to
install a grid system of 200 grid cells, each 25
x 25 m square (slope corrected). These grid
units serve as the plot system. See the
following webpages for more information:
http://www.hubbardbrook.org/watersheds/maps/w1_grid_map.htm
http://www.hubbardbrook.org/watersheds/w1_grid_elevations.htm.
SAMPLING DESIGN
The inventory consists of a total
inventory of all trees >=10 cm dbh on the
whole of the watershed (11.8 ha), as measured in
each of the 200 25 m x 25 m plots. Trees >=2
to <=10 cm dbh were subsampled using a 3
meter wide strip along one edge of each 25 m x
25 m plot.
DATA DESCRIPTION
The data consist of the diameters
(dbh) of all the trees >=10 cm dbh, live and
dead, in the whole of the watershed (8184
individual stems). Dead trees were recorded as
standing dead trees (trees dead but retaining
most of their fine branches) and as snags (trees
broken off above dbh or with only their major
large branches still intact). Live trees were
noted "sick" if they had very sparse foliage or
yellowing foliage in the mid summer sampling. A
subsample of trees >=2 cm dbh and <=10 cm
dbh were measured at the same time (3193
individual stems). All stems that met the size
criteria were measured individually, and in some
years it was noted whether a stem was part of a
group of stems from the same tree (i.e. multiple
stems that split from a single trunk below
breast height). For W1, whether or not a stem
was part of a group was recorded in all survey
years through 2001.
NOTES
It is not possible to compare
pre-2006 data between sampling years on a plot
by plot basis. This is because trees were not
individually tagged and trees on the lines
between plots can "drift" between plots between
years depending on the observers line of sight
or decision as to whether the center of the base
of a tree is in one plot or the adjoining plot.
With the addition of tree tags in 2006, tracking
of individual trees is now possible.
Subsequent surveys of tagged trees
allow for corrections to be made. For example,
it is possible to tag trees that had been clearly
missed in the previous survey (trees >19.5 cm
dbh as measured in 2011 – the cutoff was based
on observed maximum 5-year increment from tree
rings). Another benefit of tagged tree
inventories is that it is possible to catch
field blunders as defined by extraordinary
negative or positive diameter growth. Such
examples are coded in the dataset under the
variable AnalysisCode, where an“I”signifies that
the dbh in 2006 was interpolated by regression
from 2011 survey data. It is not recommended
that these trees be used for demographic
analyses since the growth has been estimated.
Watershed 1 contains two rain gauge
clearings within its boundaries. This reduces
the forested area of the watershed and
complicates calculation of plot area. For those
plots that lie wholly or partially within a
clearing, an adjustment is made in the
calculation of plot area to include only the
forested portion of the plot. Plot 144 is the
only plot that lies entirely within a clearing
and contains no trees. The middle rain gauge
(#2) was extended between the 2006 and 2011
inventories. Tagged trees were felled and some
of the leftover trees became edge trees to the
clearing. To ensure that the clearing would not
bias biomass or demographic summaries of the
surviving trees, the following plots were
excluded from the 2011 database: 131, 133, 137,
138, 139, 140, 143, 145, 146, 149, 150, 151. For
extensive notes about the details of these
surveys and subsequent calculations, see the
notes indicated at the bottom of the interactive
calculation programs (link provided in
ADDITIONAL RESOURCES section).
ADDITIONAL RESOURCES
Quantifying the forest. http://www.hubbardbrook.org/w6_tour/biomass-stop/stop-7.htm
W1 biomass calculator. http://www.hubbardbrook.org/w6_tour/biomass-stop/biomassw1.htm
W1 phytosociology calculator. http://www.hubbardbrook.org/w6_tour/biomass-stop/phytow1.htm
W1 calcium addition summary. http://www.hubbardbrook.org/research/longterm/calcium/w1_overview/index.html
Hubbard Brook Ecosystem Study: composition and
dynamics of the tree stratum
F.H.
Bormann
T.G.
Siccama
G.E.
Likens
R.H.
Whittaker
1970
Ecol. Monogr.
40
4
373-388
The Hubbard Brook Ecosystem Study: forest biomass and
production
whittaker
bormann
likens
siccama
1974
Ecol. Monogr.
44
2
233-254
Hubbard Brook Ecosystem Study: forest nutrient
cycling and element behavior
whittaker
likens
bormann
J.S.
Eaton
siccama
1979
english
Ecology
60
1
203-220
w1_2006veg
Tree inventory data for Watershed 1, 2006, at the
Hubbard Brook LTER. Vigor codes 1 and 2 are deprecated for 2006 and later data; beech health was recorded using codes 3 - 6.
w1_2006veg.txt
ASCII
1
0
\r\n
column
0x2c
http://www.hubbardbrook.org/data/data_policy.php?target=w1_2006veg.txt
uid=HBR,o=LTER,dc=ecoinformatics,dc=org
all
public
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The data is physically located at the
Battles Laboratory, Environmental Science, Policy,
and Management, University of California, Berkeley.
Last updated in May 2013.
Year
sample year
YYYY
Watershed
watershed number
1
the number of the watershed is 1 throughout this
dataset
Plot
plot number
An integer representing the
plot
Zone
vegetation zone
1
birch and fern glade on the
west side of the ridge top - 8
plots
2
spruce/fir flat area on the
east side of the ridge top - 12
plots
3
high hardwoods just below
the ridgetop - 26 plots
4
spruce/fir on cliffs and
ledges in the middle of the high
hardwoods - 11 plots
5
mid elevation hardwoods with
deeper soil - 48 plots
6
poorly-formed hardwoods on
ledges on the east side of the central
watershed - 41 plots
7
low elevation hardwoods - 54
plots
Species
species acronym
ACSA
Sugar maple (Acer
saccharum)
FAGR
American beech (Fagus
grandifolia)
BEAL
Yellow birch (Betula
alleghaniensis)
FRAM
White ash (Fraxinus
americana)
ACSP
Mountain maple (Acer
spicatum)
ACPE
Striped maple or moose wood
(Acer pensylvanicum)
PRPE
Pin or fire cherry (Prunus
pensylvanica)
PRVI
Choke cherry (Prunus
virginiana)
ABBA
Balsam fir (Abies
balsamea)
PIRU
Red spruce (Picea
rubens)
BEPA
White or paper birch (Betula
papyrifera)
SOAM
Mountain ash (Sorbus
americana)
ACRU
Red maple (Acer
rubrum)
TSCA
Eastern hemlock (Tsuga
canadensis)
UNKN
unknown, used for
unidentifiable rotten snags
POTR
Quaking aspen (Populus
tremuloides)
PRSE
Black cherry (Prunus
serotina)
AMSP
Shadbush (Amelanchier
sp.)
POGR
Big-tooth aspen (Populus
grandidentata)
SASP
Willow (Salix
sp.)
COAL
Alternate-leaved dogwood
(Cornus alternifolia)
PRSP
Cherry (unspecified) (Prunus
sp.)
SARA
Red elderberry (Sambucus racemosa)
SppNum
species number
1
Sugar maple (Acer
saccharum)
2
American beech (Fagus
grandifolia)
3
Yellow birch (Betula
alleghaniensis)
4
White ash (Fraxinus
americana)
5
Mountain maple (Acer
spicatum)
6
Striped maple or moose wood
(Acer pensylvanicum)
7
Pin or fire cherry (Prunus
pensylvanica)
8
Choke cherry (Prunus
virginiana)
9
Balsam fir (Abies
balsamea)
10
Red spruce (Picea
rubens)
11
White or paper birch (Betula
papyrifera)
12
Mountain ash (Sorbus
americana)
13
Red maple (Acer
rubrum)
14
Eastern hemlock (Tsuga
canadensis)
15
unknown, used for
unidentifiable rotten snags
16
Quaking aspen (Populus
tremuloides)
17
Black cherry (Prunus
serotina)
18
Shadbush (Amelanchier
sp.)
19
Big-tooth aspen (Populus
grandidentata)
20
Willow (Salix
sp.)
21
Alternate-leaved dogwood
(Cornus alternifolia)
22
Cherry (unspecified) (Prunus
sp.)
23
Red elderberry (Sambucus racemosa)
Seq
Sequence number. Unique number for each
tree.
A positive number representing
the sequence number of an individual
tree
Tag
Tree tag number
A positive number or
number-letter combination representing
an individual tree tag
0
Tree did not have a
tag
Dbh
diameter at breast height, in
cm
centimeter
.1
real
Vigor
vigor code
0
healthy
3
sick (trees with crown in
decline)
4
standing dead
tree
5
standing dead snag (no limbs
left)
6
a downed dead tree including any dead tree that is broken or detached below dbh
AbvBmss
aboveground biomass in kilograms
estimated for each stem
kilogram
.01
real
BlwBmss
belowground biomass in kilograms
estimated for each stem
kilogram
.01
real
TwotoTen
presence (1) or absence (0) of measured
trees in the 2 - 10 cm diameter class for that plot (in
some years, not all plots were
measured)
1
Presence
0
Absence
10Area
Area of plot on which trees >10 cm dbh
were measured (m-2)
meterSquared
1
real
0
Area does not apply to the current
sample
TwotoTenArea
Area of plot on which trees 2-10 cm dbh
were measured (m-2)
meterSquared
1
real
0
Area does not apply to the current
sample
ElevB
New category of elevation zone used for
2006 and later collections
H
High elevation, >710
meters
M
Mid elevation, 630 - 710
meters
L
Low elevation, <630
meters
AnalysisCode
Analysis code
I
dbh in 2006 is interpolated
by regression from 2011 dbh
square meters, used for measurement of
plot area