uid=HFR,o=lter,dc=ecoinformatics,dc=org
all
public
read
doi:10.6073/pasta/9fa544bc89bf752e9322dddfca215ee2
Climate Change Impacts on Forest Biodiversity at Harvard Forest since 2011
James
Clark
2023
English
Climate change is rapidly transforming forests over much of the globe in ways that are not anticipated by current science. Large-scale forest diebacks, apparently linked to interactions involving drought, warm winters, and other species, are becoming alarmingly frequent. Models of biodiversity and climate have not provided guidance on if/where/when such responses will occur. Instead models often predict potential numbers of extinctions, but these forecasts not are linked in any mechanistic way to the processes that could cause them. Both modeling and field studies rely on aggregate metrics of species presence/absence or relative abundance at regional scales, but climate affects individuals. Aggregation of individual data to the species level, hides or even qualitatively changes climate effects. By sampling and analysis at the individual scale across continental variation in climate, this study can link the individual scale processes to regional responses. This study will exploit existing research sites and the new NEON platform of sites for synthesis of models and data to determine when and where predicting climate impacts on biodiversity is a plausible goal, understand where surprises are likely to occur, and attribute those predictions back to individual tree health and vulnerability to climate risk factors.
The study will provide climate vulnerability forecasts for forest biodiversity that are directly linked to the process scale. Our goal is provide probabilistic forecasts for the joint distribution of forest responses to climate change, including growth, reproduction, and mortality risk. For scientists, US Forest Service researchers, and policy makers predictions will anticipate combined risks of increasing drought and longer growing seasons. Methods developed under this project will be disseminated through training workshops for postdoctoral associates at other universities and resource managers.
biodiversity
communities
demography
diversity
growth
old growth forests
plant species
LTER controlled vocabulary
populations
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=hf250
Simes Tract (Harvard Forest), Slab City Tract (Harvard Forest). Coordinates based on WGS84 datum.
-72.21740288
-72.17686725
+42.46489345
+42.45538851
230
237
meter
2011
2021
genus
Acer
species
pensylvanicum
striped maple
species
rubrum
red maple
species
saccharum
sugar maple
species
spicatum
mountain maple
genus
Amelanchier
species
canadensis
serviceberry
genus
Betula
species
alleghaniensis
yellow birch
species
lenta
sweet birch
species
papyrifera
paper birch
genus
Carpinus
species
caroliniana
American hornbeam
genus
Carya
species
cordiformis
bitternut hickory
species
glabra
pignut hickory
species
ovata
shagbark hickory
genus
Castanea
species
dentata
chestnut
genus
Crataegus
species
sp.
hawthorn
genus
Fagus
species
grandifolia
American beech
genus
Fraxinus
species
americana
white ash
species
nigra
black ash
genus
Hamamelis
species
virginiana
witch hazel
genus
Juglans
species
cinerea
butternut
genus
Juniperus
species
virginiana
red cedar
genus
Malus
species
pumila
apple
genus
Ostrya
species
virginiana
hophornbeam
genus
Picea
species
rubens
red spruce
genus
Pinus
species
strobus
eastern white pine
genus
Populus
species
grandidentata
bigtooth aspen
genus
Prunus
species
serotina
black cherry
genus
Quercus
species
alba
white oak
species
rubra
northern red oak
species
velutina
black oak
genus
Rhamnus
species
cathartica
common buckthorn
genus
Rhamnus
species
frangula
glossy buckthorn
genus
Sorbus
species
americana
mountain ash
genus
Tilia
species
americana
basswood
genus
Tsuga
species
canadensis
eastern hemlock
genus
Ulmus
species
americana
American elm
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
Tree Location
Plots were established in 2011 and are censused every three years. The plots are mapped in 10x10 meter grids, each study area is 50m x 200m. Each tree greater than 2 meters is identified and given a specific ID number. The tree is given a local x, y value within the 10 x 10 meter plot, using the southwest corner (0,0). The following data points are taken for each tree: DBH, reproductive status, canopy status, observed damages, and tree height.
Tree Diameter
Diameter is measured at breast height (DBH). Stems greater than 5 cm diameter may be measured with a diameter tape. Stems less than 5 cm diameter must be measured with calipers, averaging several readings (diameter-tapes give an inflated measurement on these smallest stems). Each additional stem branching out below breast height (1.4 m) and reaching a height of at least 2 m is measured individually, receiving its own stem number in the data but not a new tag. Stems branching out above breast height are not counted.
Canopy Status
Categories are: 0 = tree receives little or no direct sunlight. 1 = tree receives partial sun. 2 = tree has full access to sunlight (generally a canopy dominant or co-dominant).
Reproductive status
Evidence for reproduction may be fruits or flowers, or remnants of the same if they appear to be from this year. Because this assessment requires some prior knowledge of each tree species’ reproductive habits, a table with this information should be provided for each site for reference in the field. Dioecious trees (i.e. acpe, acru, fram, juvi) may be assigned “f” (female reproduction), “m” (male reproduction), “r” (reproductive; only use in cases where it is impossible to see enough detail to determine “m” or “f”), “un” (unknown because of size, season observed, etc.). Monoecious trees (most species) receive “r” (reproductive) or “un” (unknown).
Damage observations
Damage codes are: “B” (bent over; generally the top is pinned under something), “C” (cut with chainsaw), “CD” (canopy damage, such as from an ice storm), “D” down (knocked down but not uprooted—generally smaller trees), “GT” (girdled by tag) or “GV” (girdled by vine), “L” (leaning, but not touching ground), “P” (tree was deliberately pulled over—evidenced by visible cable scar), “Q” (other), “S” (snapped—record at what height in notes), “TL” (another tree is leaning against it), “U” (knocked down and uprooted—generally larger trees). The code “F” (fallen) may be appended to B, D, L, or U to indicate that another tree was the cause of damage.
Seed collection
Each plot has 36 baskets (the size of a bushel), hung in two rows across the plot. Each basket has been assigned a UTM coordinate. Seed collection is done in late spring and fall.
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.
hf250-01-barre-woods-tree.csv
Barre Woods tree census
hf250-01-barre-woods-tree.csv
224314
fff31fb91bb61fdc4934ec78e82c20f3
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p25/hf250/hf250-01-barre-woods-tree.csv
plot
plot identification
plot
NA
missing value
tree
unigue tree identifier
unique tree identifier
NA
missing value
tag
tag number of the tree in the field
tag number of the tree in the field
NA
missing value
species
species code
species code
NA
missing value
stem
number of stems
number
1
natural
NA
missing value
censinyr
year in which a tree was “censused in” to the data, as opposed to “grow
in”. This category applies when a plot is initially censused, in areas where a plot is
expanded, or when a tree is encountered in the plot that must have been missed in the previous
census.
YYYY
1 year
NA
missing value
growinyr
year in which a stem was first observed to have reached the 2 m minimum
height to be recorded in the data. In the case of a leaning stem, the tip of the stem must be
at least 2 m above ground level to be counted.
YYYY
1 year
NA
missing value
deathyr
year in which a stem was first observed to be dead
YYYY
1 year
NA
missing value
censoryr
year in which a stem was killed for study purposes (for ex. Pulled down to
create an artificial gap)
YYYY
1 year
NA
missing value
yrMIA
year in which a stem “went missing”. This column is primarily for
technicians to reference.
YYYY
1 year
NA
missing value
postX
x location of the reference post (of a 10m x 10m reference grid) to which
the tree was mapped
meter
1
whole
NA
missing value
postY
y location of the reference post to which the tree was
mapped
meter
1
whole
NA
missing value
localX
distance in the x direction from the reference post at post.x,
post.y
meter
0.1
real
NA
missing value
localY
distance in the y direction from the reference post at post.x,
post.y
meter
0.1
real
NA
missing value
x
x coordinate of the tree relative to the field grid system; the sum of
post.x and local.x
meter
0.1
real
NA
missing value
y
y coordinate of the tree relative to the field grid system; the sum of
post.y and local.y
meter
0.1
real
NA
missing value
UTMx
UTM easting, zone 18N
meter
0.1
real
NA
missing value
UTMy
UTM northing, zone 18N
meter
0.1
real
NA
missing value
elev
elevation above sea level of the base of the tree
meter
0.000001
real
NA
missing value
survey
organization that collected the data
DUKE
Clark Lab
NA
missing value
diam2011
diameter at breast height (1.4 m) in 2011. All stems less than 5cm have
been measured with calipers, as diameter tapes give inflated readings on small
stems.
centimeter
0.1
real
NA
missing value
diam2013
diameter at breast height (1.4 m) in 2013. All stems less than 5cm have
been measured with calipers, as diameter tapes give inflated readings on small
stems.
centimeter
0.1
real
NA
missing value
diam2021
diameter at breast height (1.4 m) in 2021. All stems less than 5cm have
been measured with calipers, as diameter tapes give inflated readings on small
stems.
centimeter
0.1
real
NA
missing value
sex2011
reproductive status in 2011 as observed in the field
F
Female reproduction. Use only for dioecious trees.
M
Male reproduction. Use only for dioecious trees.
R
Reproductive. Use for monoecious trees or for dioecious trees when unable to
determine sex.
N
Not reproductive. Use only when the whole canopy is visible and the tree is
observed during its typical reproductive season.
UN
Unknown. No sign of reproduction at the moment, but either the whole canopy is
not visible or the tree was not observed during the typical reproductive
season.
NA
The stem was not checked for reproductive status.
NA
missing value
sex2013
reproductive status in 2013 as observed in the field
F
Female reproduction. Use only for dioecious trees.
M
Male reproduction. Use only for dioecious trees.
R
Reproductive. Use for monoecious trees or for dioecious trees when unable to
determine sex.
N
Not reproductive. Use only when the whole canopy is visible and the tree is
observed during its typical reproductive season.
UN
Unknown. No sign of reproduction at the moment, but either the whole canopy is
not visible or the tree was not observed during the typical reproductive
season.
NA
The stem was not checked for reproductive status.
NA
missing value
sex2021
reproductive status in 2021 as observed in the field
F
Female reproduction. Use only for dioecious trees.
M
Male reproduction. Use only for dioecious trees.
R
Reproductive. Use for monoecious trees or for dioecious trees when unable to
determine sex.
N
Not reproductive. Use only when the whole canopy is visible and the tree is
observed during its typical reproductive season.
UN
Unknown. No sign of reproduction at the moment, but either the whole canopy is
not visible or the tree was not observed during the typical reproductive
season.
NA
The stem was not checked for reproductive status.
NA
missing value
canopy2011
canopy status in 2011
0
The stem has no access to direct sunlight (typical understory
tree).
1
The stem has partial access to direct sunlight.
2
The stem is a canopy dominant or codominant and has full access to
sunlight.
NA
The stem was not evaluated for canopy status.
NA
missing value
canopy2013
canopy status in 2013
0
The stem has no access to direct sunlight (typical understory
tree).
1
The stem has partial access to direct sunlight.
2
The stem is a canopy dominant or codominant and has full access to
sunlight.
NA
The stem was not evaluated for canopy status.
NA
missing value
canopy2021
canopy status in 2021
0
The stem has no access to direct sunlight (typical understory
tree).
1
The stem has partial access to direct sunlight.
2
The stem is a canopy dominant or codominant and has full access to
sunlight.
NA
The stem was not evaluated for canopy status.
NA
missing value
cropCount2021
observed fruit structures on individual trees
number
1
whole
NA
missing value
cropFraction2021
estimated percent of canopy being observed for crop count
dimensionless
0.01
real
NA
missing value
damage2011
damage to tree observed in 2011
B
Bent
C
Cut with chainsaw
CD
Canopy damage (i.e., from an ice storm, dieback)
D
Down, knocked down but no root ball (mangled or snapped)
F
Fallen tree, to be appended to B, S, or L to indicate reason (SF, LF,
etc.)
G
Girdled, either by tag or vine
L
Leaning
Q
Other
S
Snapped
TL
Tree has another tree leaning against it
U
Uprooted, knocked down with root ball
V
Presumably indicates damage inflicted by a vine
Free text (unrestricted)
.*
NA
missing value
damage2013
damage to tree observed in 2013
B
Bent
C
Cut with chainsaw
CD
Canopy damage (i.e., from an ice storm, dieback)
D
Down, knocked down but no root ball (mangled or snapped)
F
Fallen tree, to be appended to B, S, or L to indicate reason (SF, LF,
etc.)
G
Girdled, either by tag or vine
L
Leaning
Q
Other
S
Snapped
TL
Tree has another tree leaning against it
U
Uprooted, knocked down with root ball
V
Presumably indicates damage inflicted by a vine
Free text (unrestricted)
.*
NA
missing value
damage2021
damage to tree observed in 2013
B
Bent
C
Cut with chainsaw
CD
Canopy damage (i.e., from an ice storm, dieback)
D
Down, knocked down but no root ball (mangled or snapped)
F
Fallen tree, to be appended to B, S, or L to indicate reason (SF, LF,
etc.)
G
Girdled, either by tag or vine
L
Leaning
Q
Other
S
Snapped
TL
Tree has another tree leaning against it
U
Uprooted, knocked down with root ball
V
Presumably indicates damage inflicted by a vine
Free text (unrestricted)
.*
NA
missing value
height2013
height of tree in 2014
meter
0.00000001
real
NA
missing value
1433
hf250-02-simes-tree.csv
Simes plot tree census
hf250-02-simes-tree.csv
308162
6881d7dfdd4c9ff193d33266aed15db2
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p25/hf250/hf250-02-simes-tree.csv
plot
plot identification
plot
NA
missing value
tree
unique tree identifier
unique tree identifier
NA
missing value
tag
tag number of the tree in the field
tag number of the tree in the field
NA
missing value
species
species code
species code
NA
missing value
stem
number of stems
number
1
natural
NA
missing value
censinyr
year in which a tree was “censused in” to the data, as opposed to “grow
in”. This category applies when a plot is initially censused, in areas where a plot is
expanded, or when a tree is encountered in the plot that must have been missed in the previous
census.
YYYY
1 year
NA
missing value
growinyr
year in which a stem was first observed to have reached the 2 m minimum
height to be recorded in the data. In the case of a leaning stem, the tip of the stem must be
at least 2 m above ground level to be counted.
YYYY
1 year
NA
missing value
deathyr
year in which a stem was first observed to be dead
YYYY
1 year
NA
missing value
censoryr
year in which a stem was killed for study purposes (for ex. Pulled down to
create an artificial gap)
YYYY
1 year
NA
missing value
yrMIA
year in which a stem “went missing”. This column is primarily for
technicians to reference
YYYY
1 year
NA
missing value
postX
x location of the reference post (of a 10m x 10m reference grid) to which
the tree was mapped
meter
1
whole
NA
missing value
postY
y location of the reference post to which the tree was
mapped
meter
1
whole
NA
missing value
localX
distance in the x direction from the reference post at post.x,
post.y
meter
0.1
real
NA
missing value
localY
distance in the y direction from the reference post at post.x,
post.y
meter
0.1
real
NA
missing value
x
x coordinate of the tree relative to the field grid system; the sum of
post.x and local.x
meter
0.1
real
NA
missing value
y
y coordinate of the tree relative to the field grid system; the sum of
post.y and local.y
meter
0.1
real
NA
missing value
UTMx
UTM easting, zone 18N
meter
0.0001
real
NA
missing value
UTMy
UTM northing, zone 18N
meter
0.001
real
NA
missing value
elev
elevation above sea level of the base of the tree
meter
0.000001
real
NA
missing value
survey
organization that collected the data
DUKE
Clark Lab
NA
missing value
diam2011
diameter at breast height (1.4 m) in 2011. All stems smaller than 5cm have
been measured with calipers, as diameter tapes give inflated readings on small
stems.
centimeter
0.1
real
NA
missing value
diam2013
diameter at breast height (1.4 m) in 2013. All stems less than 5cm have
been measured with calipers, as diameter tapes give inflated readings on small
stems.
centimeter
0.1
real
NA
missing value
diam2021
diameter at breast height (1.4 m) in 2021. All stems less than 5cm have
been measured with calipers, as diameter tapes give inflated readings on small
stems.
centimeter
0.1
real
NA
missing value
sex2011
reproductive status in 2011 as observed in the field
F
Female reproduction. Use only for dioecious trees.
M
Male reproduction. Use only for dioecious trees.
R
Reproductive. Use for monoecious trees or for dioecious trees when unable to
determine sex.
N
Not reproductive. Use only when the whole canopy is visible and the tree is
observed during its typical reproductive season.
UN
Unknown. No sign of reproduction at the moment, but either the whole canopy is
not visible or the tree was not observed during the typical reproductive
season.
NA
The stem was not checked for reproductive status.
NA
missing value
sex2013
reproductive status in 2013 as observed in the field
F
Female reproduction. Use only for dioecious trees.
M
Male reproduction. Use only for dioecious trees.
R
Reproductive. Use for monoecious trees or for dioecious trees when unable to
determine sex.
N
Not reproductive. Use only when the whole canopy is visible and the tree is
observed during its typical reproductive season.
UN
Unknown. No sign of reproduction at the moment, but either the whole canopy is
not visible or the tree was not observed during the typical reproductive
season.
NA
The stem was not checked for reproductive status.
NA
missing value
sex2020
reproductive status in 2020 as observed in the field
F
Female reproduction. Use only for dioecious trees.
M
Male reproduction. Use only for dioecious trees.
R
Reproductive. Use for monoecious trees or for dioecious trees when unable to
determine sex.
N
Not reproductive. Use only when the whole canopy is visible and the tree is
observed during its typical reproductive season.
UN
Unknown. No sign of reproduction at the moment, but either the whole canopy is
not visible or the tree was not observed during the typical reproductive
season.
NA
The stem was not checked for reproductive status.
NA
missing value
sex2021
reproductive status in 2021 as observed in the field
F
Female reproduction. Use only for dioecious trees.
M
Male reproduction. Use only for dioecious trees.
R
Reproductive. Use for monoecious trees or for dioecious trees when unable to
determine sex.
N
Not reproductive. Use only when the whole canopy is visible and the tree is
observed during its typical reproductive season.
UN
Unknown. No sign of reproduction at the moment, but either the whole canopy is
not visible or the tree was not observed during the typical reproductive
season.
NA
The stem was not checked for reproductive status.
NA
missing value
canopy2011
canopy status in 2011
0
The stem has no access to direct sunlight (typical understory
tree)
1
The stem has partial access to direct sunlight
2
The stem is a canopy dominant or codominant and has full access to
sunlight
NA
The stem was not evaluated for canopy status
NA
missing value
canopy2013
canopy status in 2013
0
The stem has no access to direct sunlight (typical understory
tree).
1
The stem has partial access to direct sunlight.
2
The stem is a canopy dominant or codominant and has full access to
sunlight.
NA
The stem was not evaluated for canopy status.
NA
missing value
canopy2020
canopy status in 2020
0
The stem has no access to direct sunlight (typical understory
tree).
1
The stem has partial access to direct sunlight.
2
The stem is a canopy dominant or codominant and has full access to
sunlight.
NA
The stem was not evaluated for canopy status.
NA
missing value
canopy2021
canopy status in 2021
0
The stem has no access to direct sunlight (typical understory
tree).
1
The stem has partial access to direct sunlight.
2
The stem is a canopy dominant or codominant and has full access to
sunlight.
NA
The stem was not evaluated for canopy status.
NA
missing value
cropCount2020
observed fruit structures on individual trees in 2020
number
1
whole
NA
missing value
cropFraction2020
estimated percent of canopy being observed for crop count in 2020
dimensionless
0.01
real
NA
missing value
cropCount2021
observed fruit structures on individual trees in 2021
number
1
whole
NA
missing value
cropFraction2021
estimated percent of canopy being observed for crop count in 2021
dimensionless
0.01
real
NA
missing value
damage2011
damage to tree observed in 2011
B
Bent
C
Cut with chainsaw
CD
Canopy damage (i.e., from an ice storm, dieback)
D
Down, knocked down but no root ball (mangled or snapped)
F
Fallen tree, to be appended to B, S, or L to indicate reason (SF, LF,
etc.)
G
Girdled, either by tag or vine
L
Leaning
Q
Other
S
Snapped (Height at which it is snapped should be recorded in notes
column)
TL
Tree has another tree leaning against it
U
Uprooted, knocked down with root ball
V
Presumably indicates damage inflicted by a vine
Free text (unrestricted)
.*
NA
missing value
damage2013
damage to tree observed in 2013
B
Bent
C
Cut with chainsaw
CD
Canopy damage (i.e., from an ice storm, dieback)
D
Down, knocked down but no root ball (mangled or snapped)
F
Fallen tree, to be appended to B, S, or L to indicate reason (SF, LF,
etc.)
G
Girdled, either by tag or vine
L
Leaning
Q
Other
S
Snapped
TL
Tree has another tree leaning against it
U
Uprooted, knocked down with root ball
V
Presumably indicates damage inflicted by a vine
Free text (unrestricted)
.*
NA
missing value
damage2021
damage to tree observed in 2021
B
Bent
C
Cut with chainsaw
CD
Canopy damage (i.e., from an ice storm, dieback)
D
Down, knocked down but no root ball (mangled or snapped)
F
Fallen tree, to be appended to B, S, or L to indicate reason (SF, LF,
etc.)
G
Girdled, either by tag or vine
L
Leaning
Q
Other
S
Snapped
TL
Tree has another tree leaning against it
U
Uprooted, knocked down with root ball
V
Presumably indicates damage inflicted by a vine
Free text (unrestricted)
.*
NA
missing value
height2013
height of tree in 2014
meter
0.00000001
real
NA
missing value
CoreYr1
first year that tree was cored
YYYY
1 year
NA
missing value
1785
hf250-03-barre-woods-basket.csv
Barre Woods basket locations
hf250-03-barre-woods-basket.csv
1050
d528fde5d1eba9387cc3a6637269f80a
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p25/hf250/hf250-03-barre-woods-basket.csv
basket
basket number
basket number
NA
missing value
x
x coordinate of the basket relative to the field grid system
meter
1
whole
NA
missing value
y
y coordinate of the basket relative to the field grid system
meter
1
whole
NA
missing value
utm.x
UTM easting, zone 18N
meter
0.1
real
NA
missing value
utm.y
UTM northing, zone 18N
meter
0.1
real
NA
missing value
36
hf250-04-simes-basket.csv
Simes plot basket locations
hf250-04-simes-basket.csv
1252
22e6113edc3327fb3750ad664b937ef5
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p25/hf250/hf250-04-simes-basket.csv
basket
basket number
basket number
NA
missing value
x
x coordinate of the basket relative to the field grid system
meter
1
whole
NA
missing value
y
y coordinate of the basket relative to the field grid system
meter
1
whole
NA
missing value
utm.x
UTM easting, zone 18N
meter
0.1
real
NA
missing value
utm.y
UTM northing, zone 18N
meter
0.1
real
NA
missing value
36
hf250-05-barre-woods-seeds.csv
Barre Woods seeds
hf250-05-barre-woods-seeds.csv
41745
c6e2fc7c815eb64e95e921c4766ceb21
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p25/hf250/hf250-05-barre-woods-seeds.csv
plot
plot identification
plot
NA
missing value
trap
unique id
unique id
NA
missing value
date
date
YYYY-MM-DD
1 day
NA
missing value
month
month
month
NA
missing value
day
day
day
NA
missing value
year
year
YYYY
1 year
NA
missing value
acerRubr
Acer rubrum
number
1
natural
NA
missing value
acerSacc
Acer saccharum
number
1
natural
NA
missing value
acerPens
Acer pensylvanicum
number
1
natural
NA
missing value
betuUNKN_IMMA
immature seed structures of Betula unknowns
number
1
natural
NA
missing value
betuAlle
Betula alleghaniensis
number
1
natural
NA
missing value
betuUNKN
Betula, unknown species
number
1
natural
NA
missing value
betuUNKN_fruit
Betula lenta fruiting body
number
1
natural
NA
missing value
fraxAmer
Fraxinus americana
number
1
natural
NA
missing value
hamaVirg
Hamamelis virginiana
number
1
natural
NA
missing value
querAlba
Quercus alba
number
1
natural
NA
missing value
querRubr
Quercus Rubra
number
1
natural
NA
missing value
querRubr_caps
acorn caps of Quercus rubra
number
1
natural
NA
missing value
querVelu
Quercus velutina
number
1
natural
NA
missing value
querVelu_caps
Quercus velutina
number
1
natural
NA
missing value
querUNKN_IMMA
immature acorns of Quercus unknowns
number
1
natural
NA
missing value
pinuStro
Pinus strobus
number
1
natural
NA
missing value
pinuStro_fruit
Pinus strobus fruiting body
number
1
natural
NA
missing value
pinuStro_IMMA
Pinus seed/fruit is immature/aborted such that it is too underdeveloped to have ever been viable
number
1
natural
NA
missing value
prunSero
Prunus serotina
number
1
natural
NA
missing value
tsugCana
Tsuga canadensis
number
1
natural
NA
missing value
unknUNKN
unknown genus/species
number
1
natural
NA
missing value
active
whether or not active
whether or not active
NA
missing value
503
hf250-06-simes-seeds.csv
Simes plot seeds
hf250-06-simes-seeds.csv
37251
8d7d5489ad18b17213848c9bdeba45d6
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p25/hf250/hf250-06-simes-seeds.csv
plot
plot identification
plot
NA
missing value
trapnum
unique id
unique id
NA
missing value
date
date
YYYY-MM-DD
1 day
NA
missing value
month
month
month
NA
missing value
day
day
day
NA
missing value
year
year
YYYY
1 year
NA
missing value
acerRubr
Acer rubrum
number
1
natural
NA
missing value
acerSacc
Acer saccharum
number
1
natural
NA
missing value
acerUNKN_IMMA
Acer
number
1
natural
NA
missing value
betuAlle
Betula alleghaniensis
number
1
natural
NA
missing value
betuLent
Betula lenta
number
1
natural
NA
missing value
betuPapy
Betula papyrifera
number
1
natural
NA
missing value
betuUNKN
Betula, unknown species
number
1
natural
NA
missing value
carpCaro
Carpinus caroliniana
number
1
natural
NA
missing value
fraxAmer
Fraxinus americana
number
1
natural
NA
missing value
fraxPenn
Fraxinus pennsylanica
number
1
natural
NA
missing value
pinuStro
Pinus strobus
number
1
natural
NA
missing value
pinuStro_fruit
Pinus strobus
number
1
natural
NA
missing value
prunSero
Prunus serotina
number
1
natural
NA
missing value
querRubr
Quercus Rubra
number
1
natural
NA
missing value
querRubr_caps
Quercus Rubra
number
1
natural
NA
missing value
querVelu
Quercus velutina
number
1
natural
NA
missing value
querVelu_caps
acorn caps of Quercus velutina
number
1
natural
NA
missing value
querUNKN_IMMA
Quercus seed/fruit is immature/aborted such that it is too underdeveloped to have ever been viable
number
1
natural
NA
missing value
querUNKN
Quercus, unknown species
number
1
natural
NA
missing value
tsugCana
Tsuga canadensis
number
1
natural
NA
missing value
unknUNKN
unknown genus/species
number
1
natural
NA
missing value
active
whether or not active
whether or not active
NA
missing value
468
biodiversity
conservation
informatics
plot
long-term measurement
modeling
https://sites.nicholas.duke.edu/clarklab/