uid=HFR,o=lter,dc=ecoinformatics,dc=org
all
public
read
doi:10.6073/pasta/a76844a44291a12d0a188eea953d27d7
Hemlock Understory Vegetation Plots at Harvard Forest since 2002
David
Foster
https://orcid.org/0000-0003-1171-3762
David
Orwig
https://orcid.org/0000-0001-7822-3560
Audrey
Barker Plotkin
https://orcid.org/0000-0002-4473-9785
Researcher
2023
English
Hemlock (Tsuga canadensis) forests in New England are changing rapidly with the invasion of the hemlock woolly adelgid (HWA, Adelges tsugae), a non-native insect pest that kills hemlock trees. As the adelgid invades hemlock stands at Harvard Forest, we are monitoring how forest structure and function changes. We surveyed community vegetation structure and composition prior to adelgid infestation, and are repeating this survey as infestation progresses. These measurements will allow us to link the long-term history of these hemlock stands to other current studies of hemlock response to adelgid infestation.
hemlock woolly adelgid
hemlock
understory vegetation
vegetation dynamics
LTER controlled vocabulary
disturbance
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=hf048
Prospect Hill Tract (Harvard Forest), Slab City Tract (Harvard Forest). Coordinates based on WGS84 datum.
-72.22
-72.18
+42.55
+42.45
250
350
meter
2002
2022
genus
Tsuga
species
canadensis
eastern hemlock
ongoing
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
In 2002, we surveyed understory vegetation in existing hemlock-dominated plots at the Harvard Forest. Three plots were in or adjacent to the Hemlock Mapped Tree Plot (HF031), three were plots established in 1996 by Jennifer Jenkins (Jenkins, J. C., Aber, J. D., Canham, C. 1999. Hemlock woolly adelgid impacts on community structure and N cycling rates in eastern hemlock forest. Canadian Journal of Forest Research 29: 630-645.), and four were plots established in 1995 by Jason McLachlan (HF029 and HF053).
In each plot, we established two transects running north-south. Five 1 m2 subplots were spaced evenly along each transect. We labeled the NW corner, unless otherwise noted. Transects are marked with string and yellow tent stakes (no string at Jenkins plots), and plots are marked with pink flags.
Within each sub-plot, we estimated percent cover for herbs, shrubs, and seedlings to the nearest one percent. We counted the number of seedlings by species. A seedling is a tree less than 1.3m tall. If rocks or coarse woody debris covered at least 5% of the plot, their percent cover was recorded. In addition, the depth of the organic soil layer was measured to the nearest 0.5 cm at the NW corner of each subplot. We searched each plot and compiled a species list for the entire 20m x 20m or 30m x 30m area.
Saplings were tallied by species across the plot. A sapling is a tree greater than 1.3m tall but less than 8cm in diameter. For the Hemlock History plots, that means that some stems were counted both as saplings and trees, since the Hemlock History Plots had trees tagged down to 2.5cm dbh. They were noted live or dead (only live saplings counted in 2022).
In 2012, we resampled the understory vegetation (seedlings, saplings, herbs, shrubs, species list, substrates) only in the four plots established by Jason McLachlan. Organic layer depth was not measured in 2012. In 2016, we resampled understory vegetation and organic layer depth in the three plots associated with the Hemlock Mapped Tree Plot, and the four McLachlan plots. In 2022, we sampled understory vegetation in the four McLachlan plots. We discontinued measurements in the three Jenkins plots because these had less long-term ecological data, and are located nearby and in very similar forest to one of the McLachlan plots.
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.
hf048-01-o-layer.csv
o-layer
hf048-01-o-layer.csv
2541
67908f9ec6b8245ee4ed99a7eda73852
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p04/hf048/hf048-01-o-layer.csv
plot
plot code
HG1
20m x 20m plot within hemlock woodlot mapped plot on Prospect Hill Tract,
Compartment 2 (the one with the huge O layer closest to BG swamp)
HG2
20m x 20m plot within hemlock woodlot mapped plot (has lots of hemlock
seedlings)
HG3
20m x 20m plot just outside hemlock woodlot
PH2
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
2
PH7
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
7
SC1
20m x 20m plot hemlock plot on Slab City Tract, Compartment 9
SC2
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC3
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC9
30m x 30m hemlock history plot located on Slab City Tract, Compartment
9
SC10
30m x 30m hemlock history plot located on Slab City Tract, Compartment
10
NA
missing value
subplot
number of 1m2 subplot
number of 1m2 subplot
NA
missing value
year
year of measurement
YYYY
1 year
NA
missing value
o.layer
depth of organic soil layer to the nearest 0.5 cm
centimeter
0.1
real
NA
missing value
170
hf048-02-substrate.csv
substrate
hf048-02-substrate.csv
4665
7e36c8f5704201ac8ae374559b45f4b9
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p04/hf048/hf048-02-substrate.csv
plot
plot code
HG1
: 20m x 20m plot within hemlock woodlot mapped plot on Prospect Hill Tract,
Compartment 2 (the one with the huge O layer closest to BG swamp)
HG2
20m x 20m plot within hemlock woodlot mapped plot (has lots of hemlock
seedlings)
HG3
20m x 20m plot just outside hemlock woodlot
PH2
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
2
PH7
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
7
SC1
20m x 20m plot hemlock plot on Slab City Tract, Compartment 9
SC2
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC3
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC9
30m x 30m hemlock history plot located on Slab City Tract, Compartment
9
SC10
30m x 30m hemlock history plot located on Slab City Tract, Compartment
10
NA
missing value
subplot
number of 1m2 subplot
number of 1m2 subplot
NA
missing value
year
year of measurement
YYYY
1 year
NA
missing value
rock
percent cover of rocks (except for 2002, estimated to the nearest
5%)
dimensionless
1
whole
NA
missing value
tree
percent cover of tree stem (except for 2002, estimated to the nearest
5%)
dimensionless
1
whole
NA
missing value
down.wood
percent cover of down wood (except for 2002, estimated to the nearest
5%)
dimensionless
1
whole
NA
missing value
250
hf048-03-herb.csv
herb
hf048-03-herb.csv
13844
8b1611e59f79ff42ef19d49816034ab3
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p04/hf048/hf048-03-herb.csv
year
year of measurement
YYYY
1 year
NA
missing value
plot
plot code
HG1
20m x 20m plot within hemlock woodlot mapped plot on Prospect Hill Tract,
Compartment 2 (the one with the huge O layer closest to BG swamp)
HG2
20m x 20m plot within hemlock woodlot mapped plot (has lots of hemlock
seedlings)
HG3
20m x 20m plot just outside hemlock woodlot
PH2
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
2
PH7
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
7
SC1
20m x 20m plot hemlock plot on Slab City Tract, Compartment 9
SC2
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC3
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC9
30m x 30m hemlock history plot located on Slab City Tract, Compartment
9
SC10
30m x 30m hemlock history plot located on Slab City Tract, Compartment
10
NA
missing value
subplot
number of 1m2 subplot
number of 1m2 subplot
NA
missing value
aranud
percent cover of Aralia nudicaulis. Cover was recorded to the nearest 1%.
A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
aritri
percent cover of Arisaema triphyllum. Cover was recorded to the nearest
1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
clibor
percent cover of Clintonia borealis. Cover was recorded to the nearest 1%.
A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
coptri
percent cover of Coptis trifolia. Cover was recorded to the nearest
1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
denpun
percent cover of Dennstaedtia punctilobula. Cover was recorded to the
nearest 1%. A cover % of 0.5% was assigned to species present within a subplot but with less
than 1% cover.
dimensionless
0.1
real
NA
missing value
dryspi
percent cover of Dryopteris spinulosa. Cover was recorded to the nearest
1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
epirep
percent cover of Epigaea repens. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
galspe
percent cover of Galium species. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
hupluc
percent cover of Huperzia lucidula. Cover was recorded to the nearest
1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
maican
percent cover of Maianthemum canadense. Cover was recorded to the nearest
1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
medvir
percent cover of Medeola virginiana. Cover was recorded to the nearest 1%.
A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
monuni
percent cover of Monotropa uniflora. Cover was recorded to the nearest 1%.
A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
osmcin
percent cover of Osmunda cinnanoneum. Cover was recorded to the nearest 1%.
A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
oxaspe
percent cover of Oxalis species. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
lysbor
percent cover of Lysimachia borealis. Cover was recorded to the nearest
1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
triund
percent cover of Trillium undulatum. Cover was recorded to the nearest 1%.
A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
uvuses
percent cover of Uvularia sessilifolia. Cover was recorded to the nearest
1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
unk
percent cover of unknown species. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
carspe
percent cover of Carex (to genus only). Cover was recorded to the nearest 1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1% cover.
dimensionless
0.1
real
NA
missing value
gootes
percent cover of Goodyera tesselata. Cover was recorded to the nearest 1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1% cover.
dimensionless
0.1
real
NA
missing value
lycuni
percent cover of Lycopus uniflorus. Cover was recorded to the nearest 1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1% cover.
dimensionless
0.1
real
NA
missing value
250
hf048-04-shrub.csv
shrub
hf048-04-shrub.csv
7234
04dc5d7286716f2b9ffc53e19224cbae
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p04/hf048/hf048-04-shrub.csv
year
year of measurement
YYYY
1 year
NA
missing value
plot
plot code
HG1
20m x 20m plot within hemlock woodlot mapped plot on Prospect Hill Tract,
Compartment 2 (the one with the huge O layer closest to BG swamp)
HG2
20m x 20m plot within hemlock woodlot mapped plot (has lots of hemlock
seedlings)
HG3
20m x 20m plot just outside hemlock woodlot
PH2
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
2
PH7
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
7
SC1
20m x 20m plot hemlock plot on Slab City Tract, Compartment 9
SC2
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC3
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC9
30m x 30m hemlock history plot located on Slab City Tract, Compartment
9
SC10
30m x 30m hemlock history plot located on Slab City Tract, Compartment
10
NA
missing value
subplot
number of 1m2 subplot
number of 1m2 subplot
NA
missing value
gaupro
percent cover of Gaultheria procumbens. Cover was recorded to the nearest
1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
mitrep
percent cover of Mitchella repens. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
ilemuc
percent cover of Ilex mucronata. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
rhopri
percent cover of Rhododendron periclymenoides. Cover was recorded to the
nearest 1%. A cover % of 0.5% was assigned to species present within a subplot but with less
than 1% cover.
dimensionless
0.1
real
NA
missing value
vacang
percent cover of Vaccinium angustifolium. Cover was recorded to the
nearest 1%. A cover % of 0.5% was assigned to species present within a subplot but with less
than 1% cover.
dimensionless
0.1
real
NA
missing value
viblan
percent cover of Viburnum lantanoides. Cover was recorded to the nearest
1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
vaccor
percent cover of Vaccinium corymbosum. Cover was recorded to the nearest 1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1% cover.
dimensionless
0.1
real
NA
missing value
unk
percent cover of an unknown shrub. Cover was recorded to the nearest 1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1% cover.
dimensionless
0.1
real
NA
missing value
250
hf048-05-seedling-density.csv
seedling density
hf048-05-seedling-density.csv
9246
2de997c0a656d86706c87da35d9c0db9
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p04/hf048/hf048-05-seedling-density.csv
year
year of measurement
YYYY
1 year
NA
missing value
plot
plot code
HG1
20m x 20m plot within hemlock woodlot mapped plot on Prospect Hill Tract,
Compartment 2 (the one with the huge O layer closest to BG swamp)
HG2
20m x 20m plot within hemlock woodlot mapped plot on Prospect Hill Tract,
Compartment 2 (the one with the huge O layer closest to BG swamp)
HG3
20m x 20m plot just outside hemlock woodlot
PH2
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
2
PH7
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
7
SC1
20m x 20m plot hemlock plot on Slab City Tract, Compartment 9
SC2
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC3
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC9
30m x 30m hemlock history plot located on Slab City Tract, Compartment
9
SC10
30m x 30m hemlock history plot located on Slab City Tract, Compartment
10
NA
missing value
subplot
number of 1m2 subplot
number of 1m2 subplot
NA
missing value
acru
number of Acer rubrum seedlings observed in the 1m2
plot
number
1
whole
NA
missing value
bele.beal
number of Betula lenta or Betula alleghaniensis (difficult to distinguish
as seedlings) seedlings observed in the 1m2 plot
number
1
whole
NA
missing value
bepa
number of Betula papyrifera seedlings observed in the 1m2
plot
number
1
whole
NA
missing value
fagr
number of Fagus grandifolis seedlings observed in the 1m2
plot
number
1
whole
NA
missing value
nysy
number of Nyssa sylvatica seedlings observed in the 1m2
plot
number
1
whole
NA
missing value
piru
number of Picea rubens seedlings observed in the 1m2
plot
number
1
whole
NA
missing value
pist
number of Pinus strobus seedlings observed in the 1m2
plot
number
1
whole
NA
missing value
prse
number of Prunus serotina seedlings observed in the 1m2
plot
number
1
whole
NA
missing value
quru
number of Quercus rubra seedlings observed in the 1m2
plot
number
1
whole
NA
missing value
tsca
number of Tsuga canadensis seedlings observed in the 1m2
plot
number
1
whole
NA
missing value
unk
number of seedlings of unknown species observed in the 1m2
plot
dimensionless
1
whole
NA
missing value
acpe
number of seedlings of Acer pensylvanicum observed in the 1m2 plot
dimensionless
1
whole
NA
missing value
250
hf048-06-seedling-cover.csv
seedling cover
hf048-06-seedling-cover.csv
9826
66a3eb7f68fb365f7c356a324f5a1406
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p04/hf048/hf048-06-seedling-cover.csv
year
year of measurement
YYYY
1 year
NA
missing value
plot
plot code
HG1
20m x 20m plot within hemlock woodlot mapped plot on Prospect Hill Tract,
Compartment 2 (the one with the huge O layer closest to BG swamp)
HG2
20m x 20m plot within hemlock woodlot mapped plot (has lots of hemlock
seedlings)
HG3
20m x 20m plot just outside hemlock woodlot
PH2
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
2
PH7
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
7
SC1
20m x 20m plot hemlock plot on Slab City Tract, Compartment 9
SC2
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC3
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC9
30m x 30m hemlock history plot located on Slab City Tract, Compartment
9
SC10
30m x 30m hemlock history plot located on Slab City Tract, Compartment
10
NA
missing value
subplot
number of 1m2 subplot
number of 1m2 subplot
NA
missing value
acru
percent cover of Acer rubrum. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
bele.beal
percent cover of Betula lenta or Betula alleghaniensis (difficult to
distinguish as seedlings). Cover was recorded to the nearest 1%. A cover % of 0.5% was
assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
bepa
percent cover of Betula papyrifera. Cover was recorded to the nearest 1%.
A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
fagr
percent cover of Fagus grandifolis. Cover was recorded to the nearest 1%.
A cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
nysy
percent cover of Nyssa sylvatica. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
piru
percent cover of Picea rubens. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
pist
percent cover of Pinus strobus. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
prse
percent cover of Prunus serotina. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
quru
percent cover of Quercus rubra. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
tsca
percent cover of Tsuga canadensis. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
unk
percent cover of unknown species. Cover was recorded to the nearest 1%. A
cover % of 0.5% was assigned to species present within a subplot but with less than 1%
cover.
dimensionless
0.1
real
NA
missing value
acpe
percent cover of Acer pensylvanicum. Cover was recorded to the nearest 1%. A cover % of 0.5% was assigned to species present within a subplot but with less than 1% cover.
dimensionless
0.1
real
NA
missing value
250
hf048-07-sapling.csv
sapling
hf048-07-sapling.csv
2287
c7f8e3cda737f98fa01f7ea623ad7483
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p04/hf048/hf048-07-sapling.csv
year
year of measurement
YYYY
1 year
NA
missing value
plot
plot code
HG1
20m x 20m plot within hemlock woodlot mapped plot on Prospect Hill Tract,
Compartment 2 (the one with the huge O layer closest to BG swamp)
HG2
20m x 20m plot within hemlock woodlot mapped plot (has lots of hemlock
seedlings)
HG3
20m x 20m plot just outside hemlock woodlot
PH2
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
2
PH7
30m x 30m hemlock history plot located on Prospect Hill Tract, Compartment
7
SC1
20m x 20m plot hemlock plot on Slab City Tract, Compartment 9
SC10
30m x 30m hemlock history plot located on Slab City Tract, Compartment
10
SC2
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC3
20m x 20m plot Jenkins plot on Slab City Tract, Compartment 9
SC9
30m x 30m hemlock history plot located on Slab City Tract, Compartment
9
NA
missing value
species
species
ACPE
Acer pensylvanicum
ACRU
Acer rubrum
BELE
Betula lenta
CADE
Castanea dentata
FAGR
Fagus grandifolia
FRNI
Fraxinus nigra
TSCA
Tsuga canadensis
NA
missing value
status
status
L
live
D
dead (dead saplings not counted in 2022)
NA
missing value
hwa
hemlock woolly adelgid (measured on TSCA only, based on visual inspection
of branches within reach)
1
present
0
absent
NA
missing value
number
number of stems in the 20x20 or 30x30 m plot
number
1
whole
NA
missing value
plot.size
size of plot
hectare
0.01
real
NA
missing value
num.ha
number of stems on a per hectare basis
number
0.1
real
NA
missing value
note
note
note
NA
missing value
62
hf048-08-species.csv
species distribution
hf048-08-species.csv
7449
72e4fcc1ba25848bb4f5ac2ce377f547
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p04/hf048/hf048-08-species.csv
type
vegetation type
F
ferns / lycopods
G
graminoids
H
herbs
S
shrubs
T
trees
NA
missing value
name.Haines.2011
species name (Latin)
species name (Latin)
NA
missing value
old.name
older Latin name used in past surveys
older Latin name used in past surveys
NA
missing value
common.name
common name of the plant
common name of the plant
NA
missing value
hg1.02
presence or absence of each species in the plot in
2002
0
absent
1
present
NA
missing value
hg2.02
presence or absence of each species in the plot in
2002
0
absent
1
present
NA
missing value
hg3.02
presence or absence of each species in the plot in
2002
0
absent
1
present
NA
missing value
ph2.02
presence or absence of each species in the plot in
2002
0
absent
1
present
NA
missing value
ph7.02
presence or absence of each species in the plot in
2002
0
absent
1
present
NA
missing value
sc9.02
presence or absence of each species in the plot in
2002
0
absent
1
present
NA
missing value
sc10.02
presence or absence of each species in the plot in
2002
0
absent
1
present
NA
missing value
sc1.02
presence or absence of each species in the plot in
2002
0
absent
1
present
NA
missing value
sc2.02
presence or absence of each species in the plot in
2002
0
absent
1
present
NA
missing value
sc3.02
presence or absence of each species in the plot in
2002
0
absent
1
present
NA
missing value
ph2.12
presence or absence of each species in the plot in
2012
0
absent
1
present
NA
missing value
ph7.12
presence or absence of each species in the plot in
2012
0
absent
1
present
NA
missing value
sc9.12
presence or absence of each species in the plot in
2012
0
absent
1
present
NA
missing value
sc10.12
presence or absence of each species in the plot in
2012
0
absent
1
present
NA
missing value
hg1.16
presence or absence of each species in the plot in
2016
0
absent
1
present
NA
missing value
hg2.16
presence or absence of each species in the plot in
2016
0
absent
1
present
NA
missing value
hg3.16
presence or absence of each species in the plot in
2016
0
absent
1
present
NA
missing value
ph2.16
presence or absence of each species in the plot in
2016
0
absent
1
present
NA
missing value
ph7.16
presence or absence of each species in the plot in
2016
0
absent
1
present
NA
missing value
sc9.16
presence or absence of each species in the plot in
2016
0
absent
1
present
NA
missing value
sc10.16
presence or absence of each species in the plot in
2016
0
absent
1
present
NA
missing value
ph2.22
presence or absence of each species in the plot in
2022
0
absent
1
present
NA
missing value
ph7.22
presence or absence of each species in the plot in
2022
0
absent
1
present
NA
missing value
sc9.22
presence or absence of each species in the plot in
2022
0
absent
1
present
NA
missing value
sc10.22
presence or absence of each species in the plot in
2022
0
absent
1
present
NA
missing value
77
plot
community
long-term measurement
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf083
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf053
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf031
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf106
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf029