uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read doi:10.6073/pasta/6e3127e06ad073f33c7f00ce8b38e80d James Clark 2025 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 2023 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

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.

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.

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).

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 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.

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

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 267922 d461aaf32fd2f2497e3f30f231977432 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 diam2022 diameter at breast height (1.4 m) in 2022. 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 sex2022 reproductive status in 2022 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 sex2023 reproductive status in 2023 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 shade2011 canopy status in 2011 1 Stem is exposed to light on all sides 100% of the day (open field) 2 Stem has full access to direct sunlight (canopy dominant) 3 Stem has partial access to direct sunlight (canopy codominant) 4 Stem has little access to direct sunlight (midstory tree) 5 Stem has no access to direct sunlight (understory tree) NA Stem was not evaluated for canopy status NA missing value shade2013 canopy status in 2013 1 Stem is exposed to light on all sides 100% of the day (open field) 2 Stem has full access to direct sunlight (canopy dominant) 3 Stem has partial access to direct sunlight (canopy codominant) 4 Stem has little access to direct sunlight (midstory tree) 5 Stem has no access to direct sunlight (understory tree) NA Stem was not evaluated for canopy status NA missing value shade2021 canopy status in 2021 1 Stem is exposed to light on all sides 100% of the day (open field) 2 Stem has full access to direct sunlight (canopy dominant) 3 Stem has partial access to direct sunlight (canopy codominant) 4 Stem has little access to direct sunlight (midstory tree) 5 Stem has no access to direct sunlight (understory tree) NA Stem was not evaluated for canopy status NA missing value shade2022 canopy status in 2022 1 Stem is exposed to light on all sides 100% of the day (open field) 2 Stem has full access to direct sunlight (canopy dominant) 3 Stem has partial access to direct sunlight (canopy codominant) 4 Stem has little access to direct sunlight (midstory tree) 5 Stem has no access to direct sunlight (understory tree) NA Stem was not evaluated for canopy status NA missing value shade2023 canopy status in 2023 1 Stem is exposed to light on all sides 100% of the day (open field) 2 Stem has full access to direct sunlight (canopy dominant) 3 Stem has partial access to direct sunlight (canopy codominant) 4 Stem has little access to direct sunlight (midstory tree) 5 Stem has no access to direct sunlight (understory tree) NA 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 cropCount2023 observed fruit structures on individual trees in 2023 number 1 whole NA missing value cropFraction2023 estimated percent of canopy being observed for crop count in 2023 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 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 damage2022 damage to tree observed in 2022 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 damage2023 damage to tree observed in 2023 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 337889 1ed4a32c19c80d18000a58cf544d94db 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 sex2023 reproductive status in 2023 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 shade2011 canopy status in 2011 1 Stem is exposed to light on all sides 100% of the day (open field) 2 Stem has full access to direct sunlight (canopy dominant) 3 Stem has partial access to direct sunlight (canopy codominant) 4 Stem has little access to direct sunlight (midstory tree) 5 Stem has no access to direct sunlight (understory tree) NA Stem was not evaluated for canopy status NA missing value shade2013 canopy status in 2013 1 Stem is exposed to light on all sides 100% of the day (open field) 2 Stem has full access to direct sunlight (canopy dominant) 3 Stem has partial access to direct sunlight (canopy codominant) 4 Stem has little access to direct sunlight (midstory tree) 5 Stem has no access to direct sunlight (understory tree) NA Stem was not evaluated for canopy status NA missing value shade2020 canopy status in 2021 1 Stem is exposed to light on all sides 100% of the day (open field) 2 Stem has full access to direct sunlight (canopy dominant) 3 Stem has partial access to direct sunlight (canopy codominant) 4 Stem has little access to direct sunlight (midstory tree) 5 Stem has no access to direct sunlight (understory tree) NA Stem was not evaluated for canopy status NA missing value shade2021 canopy status in 2021 1 Stem is exposed to light on all sides 100% of the day (open field) 2 Stem has full access to direct sunlight (canopy dominant) 3 Stem has partial access to direct sunlight (canopy codominant) 4 Stem has little access to direct sunlight (midstory tree) 5 Stem has no access to direct sunlight (understory tree) NA Stem was not evaluated for canopy status NA missing value shade2023 canopy status in 2023 1 Stem is exposed to light on all sides 100% of the day (open field) 2 Stem has full access to direct sunlight (canopy dominant) 3 Stem has partial access to direct sunlight (canopy codominant) 4 Stem has little access to direct sunlight (midstory tree) 5 Stem has no access to direct sunlight (understory tree) NA Stem was not evaluated for canopy status NA missing value cropCount2020 observed fruit structures on individual trees in 2021 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 cropCount2023 observed fruit structures on individual trees in 2023 number 1 whole NA missing value cropFraction2023 estimated percent of canopy being observed for crop count in 2023 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 damage2023 damage to tree observed in 2023 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 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 hf250-07-transects.csv transect data hf250-07-transects.csv 1392 47f1380aa94ce55aab417a4ea3f9d3ce 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p25/hf250/hf250-07-transects.csv plot label site and plot number (ex. HARV_BW) plot NA missing value date date YYYY-MM-DD 1 day NA missing value species genus and species genus and species NA missing value class age and height of seedling 1st first year seedling 1m seedlings that are not first years but under 1 meter in height 2m seedlings under 2 meters in height NA missing value count total count on transect number 1 natural NA missing value distance distance on transect that seedlings were observed to number 1 natural NA missing value width how many meters wide is the transect meter 1 natural NA missing value 31 biodiversity conservation informatics plot long-term measurement modeling https://sites.nicholas.duke.edu/clarklab/