uid=HFR,o=lter,dc=ecoinformatics,dc=org
all
public
read
doi:10.6073/pasta/19a91b19dbba690030388e4e67be49e7
Mapped Trees in CRUI Land Use Project at Harvard Forest 1996-2006
Timothy
Sipe
Richard
Bowden
Charles
McClaugherty
https://orcid.org/0000-0001-5884-0756
Zachary
Buzzinotti
Researcher
Richard
Gordon
Researcher
Mark
Norris
Researcher
2023
English
Numerous variables related to land use disturbance and recovery processes influence forest composition, structure, and growth. We measured forest communities in six sites that were formerly plowed, pastured, or continuously forested woodlots in Prospect Hill to test predictions about species composition, stand structure, and productivity in response to agricultural land use legacies.
A permanent 30 x 50 m plot gridded in 5 x 5 m sub-plots was established in each of the 6 sites. All trees at least 2.5 cm DBH (diameter at breast height, 1.3 m) were mapped visually in the field, marked with an aluminum tag, and their DBH recorded in summer 1996. Individual boles of multi-stemmed trees were measured separately and a composite single DBH was calculated. Standing dead trees were also mapped and their DBH recorded as well. The 1996 data were used to determine above ground woody biomass using allometric equations for individual trees.
The permanent plots were re-surveyed ten years later in fall 2006. The status of each tree mapped in 1996 was recorded (alive, dead standing, dead fallen, forked) and DBH’s were re-measured. Additional trees that grew across the 2.5 cm DBH threshold during the ten-year period were mapped and their DBH’s measured. Composite diameters and above ground woody biomass were determined for forked trees as in 1996.
The 2006 re-measurements were used to analyze changes in species composition, stand structure (density, diameter distribution), and mortality patterns among species and size classes, and to calculate net changes in above ground woody biomass across the ten-year period.
aboveground biomass
growth
land use
mortality
survival
tree maps
vegetation dynamics
LTER controlled vocabulary
populations
disturbance
land use
human-environment
LTER core area
Harvard Forest
HFR
LTER
USA
HFR default
This dataset is released to the public under Creative Commons CC0 1.0 (No Rights Reserved). Please keep the dataset creators informed of any plans to use the dataset. Consultation with the original investigators is strongly encouraged. Publications and data products that make use of the dataset should include proper acknowledgement.
Creative Commons Zero v1.0 Universal
https://spdx.org/licenses/CC0-1.0.html
CC0-1.0
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf137
Prospect Hill Tract (Harvard Forest). Coordinates based on WGS84 datum.
-72.20
-72.17
+42.55
+42.53
335
357
meter
1996
2006
genus
Acer
species
rubrum
red maple
genus
Acer
species
saccharum
sugar maple
genus
Acer
species
pensylvanicum
striped maple
genus
Betula
species
alleghaniensis
yellow birch
genus
Betula
species
lenta
black birch
genus
Betula
species
papyrifera
paper birch
genus
Betula
species
populifolia
gray birch
genus
Castanea
species
dentata
american chestnut
genus
Fagus
species
grandifolia
american beech
genus
Fraxinus
species
americana
white ash
genus
Hamamelis
species
virginiana
witch hazel
genus
Pinus
species
strobus
white pine
genus
Populus
species
grandidentata
bigtooth aspen
genus
Prunus
species
serotina
black cherry
genus
Quercus
species
alba
white oak
genus
Quercus
species
rubra
red oak
genus
Quercus
species
velutina
black oak
genus
Tsuga
species
canadensis
hemlock
complete
Information Manager
Harvard Forest
324 North Main Street
Petersham
MA
01366
USA
(978) 724-3302
hf-im@lists.fas.harvard.edu
Harvard Forest
324 North Main Street
Petersham
MA
01366
USA
(978) 724-3302
(978) 724-3595
https://harvardforest.fas.harvard.edu
Plot locations: Plow #1 Site: Prospect Hill Tract, Compartment # III, southern end. Plow #2 Site: Prospect Hill Tract, Compartment # III, southern end. Pasture #1 Site: Prospect Hill Tract, Compartment # I, southeastern edge. Pasture #2 Site: Prospect Hill Tract, Compartment # VIII, central edge. Woodlot #1 Site: Prospect Hill Tract, Compartment # VIII, northeastern edge. Woodlot #2 Site: Prospect Hill Tract, Compartment # VII, central.
Harvard Forest Long-Term Ecological Research
Harvard Forest
324 North Main Street
Petersham
MA
01366
USA
(978) 724-3302
(978) 724-3595
https://harvardforest.fas.harvard.edu
https://ror.org/059cpzx98
pointOfContact
The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts.
National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210.
hf137-01-tree.csv
mapped trees
hf137-01-tree.csv
118154
d3ad5cb3c1770627d389d88d5ea08df2
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p13/hf137/hf137-01-tree.csv
site
site
P1
Plow 1
P2
Plow 2
S1
Pasture 1
S2
Pasture 2
W1
Woodlot 1
W2
Woodlot 2
plot
plot number. Each permanent 30 x 50 m grid has 60 5 x 5 m plots. They are numbered from left to right and top to bottom across the grid. The upper left corner plot is 1 and the lower right corner plot is 60.
plot number
tag
tag number. Unique aluminum tag number affixed to trees mapped in 1996 (2200 through 3200). New trees mapped in 2006 that were under the 2.5 cm DBH threshold in 1996 were assigned a unique tag number (4000-range) on the field maps, but no metal tag was affixed to the stems.
tag number
grid.x
x-coordinate. Spatial coordinates for the locations of trees mapped in 1996. Coordinates for new trees in 2006 will be added in the future.
meter
0.1
real
NA
missing value
grid.y
y-coordinate. Spatial coordinates for the locations of trees mapped in 1996. Coordinates for new trees in 2006 will be added in the future.
meter
0.1
real
NA
missing value
species
species code. A 6-letter genus-species abbreviation for each tree recorded in the plots.
species code
bole1.dbh.1996
diameter at breast height of Bole 1 in 1996
centimeter
0.1
real
NA
missing value
bole2.dbh.1996
diameter at breast height of Bole 2 in 1996
centimeter
0.1
real
NA
missing value
bole3.dbh.1996
diameter at breast height of Bole 3 in 1996
centimeter
0.1
real
NA
missing value
bole4.dbh.1996
diameter at breast height of Bole 4 in 1996
centimeter
0.1
real
NA
missing value
bole5.dbh.1996
diameter at breast height of Bole 5 in 1996
centimeter
0.1
real
NA
missing value
bole6.dbh.1996
diameter at breast height of Bole 6 in 1996
centimeter
0.1
real
NA
missing value
tot.ba.1996
basal area per mapped tree in 1996
squareCentimeters
0.1
real
NA
missing value
comp.dbh.1996
diameter at breast height for all individual trees, including a composite DBH for forked trees
centimeter
0.1
real
NA
missing value
awb.1996
aboveground woody biomass estimated for each tree in 1996 using published species-specific allometric equations (available upon request).
kilogram
0.1
real
NA
missing value
status.2006
2006 status for all trees mapped in 1996
A
alive
DS
dead but standing
F
fallen
forked.2006
living and dead stems on forked trees were recorded individually in the field, but these designations are removed in the archived file so that AWB calculations can be made on all living and dead stems.
Y
yes for multi-stemmed trees as of 2006
bole1.dbh.2006
diameter at breast height of Bole 1 in 2006
centimeter
0.1
real
NA
missing value
bole2.dbh.2006
diameter at breast height of Bole 2 in 2006
centimeter
0.1
real
NA
missing value
bole3.dbh.2006
diameter at breast height of Bole 3 in 2006
centimeter
0.1
real
NA
missing value
bole4.dbh.2006
diameter at breast height of Bole 4 in 2006
centimeter
0.1
real
NA
missing value
bole5.dbh.2006
diameter at breast height of Bole 5 in 2006
centimeter
0.1
real
NA
missing value
bole6.dbh.2006
diameter at breast height of Bole 6 in 2006
centimeter
0.1
real
NA
missing value
tot.ba.2006
basal area per mapped tree in 2006
squareCentimeters
0.1
real
NA
missing value
comp.dbh.2006
diameter at breast height for all individual trees in 2006, including a composite DBH for forked trees
centimeter
0.1
real
NA
missing value
awb.2006
aboveground woody biomass estimated for each tree in 2006 using published species-specific allometric equations (available upon request).
kilogram
0.1
real
NA
missing value
1197
historical
plot
community
long-term measurement
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf133
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf134
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf135
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf136
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf138
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf139
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf140
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf141
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf142
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf143
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf144