Harvard Forest Data Archive

HF039

Vegetation Inventory of Harvard Forest 1937

Related Publications

Data

• hf039-01: plot data for Prospect Hill, Tom Swamp and Slab City (preview)
• hf039-02: tree data (preview)
• hf039-03: vegetation species list (preview)
• hf039-04: vegetation presence/absence data (preview)

Overview

• Lead: Neil Hosley
• Investigators:
• Contact: Information Manager
• Start date: 1937
• End date: 1937
• Status: completed
• Location: Harvard Forest
• Latitude: +42.45 to +42.55
• Longitude: -72.23 to -72.16
• Elevation: 205 to 420 meter
• Taxa:
• Release date: 2023
• Revisions:
• EML file: knb-lter-hfr.39.19
• DOI: digital object identifier
• EDI: data package
• DataONE: data package
• Related links:
• Land Use and Forest Dynamics at Harvard Forest 1937-1995
• Vegetation Inventory of Harvard Forest 1986-1993
• Historical GIS Data for Harvard Forest Properties from 1908 to Present
• Prospect Hill Forest Plots at Harvard Forest 2013
• Study type: short-term measurement
• Research topic: large experiments and permanent plot studies
• LTER core area: populations
• Keywords: inventories, permanent plots, vegetation dynamics
• Abstract:

  The three main tracts of the Harvard Forest (3000 acres) in Petersham, MA have been sampled every 10-30 years since 1907. Though methods have varied, each survey has involved mapping forest stands followed by intensive sampling. The 1937 forest inventory was conducted one year before 75% of the standing timber at Harvard Forest was blown down by the 1938 hurricane. This valuable data set shows maximum vegetation development since agricultural abandonment. Data collected in this inventory include tree volume by species and presence/absence of advance regeneration, shrubs, herbs and bryophytes.

• Methods:

  Introduction

  The following "Directions for Reinventory of Forest, 1937" were transcribed by Audrey Barker Plotkin from original in HF Archives.

  Boundary Survey

  Compartment Boundaries: All are to be surveyed by transit and tape within accuracy limits of 2:1000. Notes are to be computed by latitudes and departures. Main corners of external boundaries are to be marked with 1" galvanized pipes having brass caps marked with H. F. and a set of serial numbers for each block, the numbers starting with one at the westernmost part and going clockwise around the block. Internal compartment lines and minor corners of external boundaries are to be marked by iron pipes. All pipes (but not the caps) are to be painted orange.

  Course

  Mapping: Any stands of 1/40 acre or over are to be mapped.

  Method of Cruising: A modification of the line-plot method with circular plots of ¼ acre (59' radius), or halves or quarters of this is to be used. In stands large enough to warrant it plots are to be spaced evenly at either 600' (27% cruise) or 800' (15%) intervals on the cruise lines according to the uniformity of the stand. Lines will be run N. - S. or E. - W. so as to accurately locate the boundaries of all stands. In most of the Forest this will necessitate distances between lines of not more than 300'. In compartments not broken up by big cuttings or openings, lines will be run from boundary to boundary but this does not necessarily have to be followed where offsets will more effectively tie in the stands. In small stands plots will be located either on or off the lines according to judgment as to where the most representative samples can be gotten.

  Plot Description

  A number will be assigned to each plot taken by means of a metal tag nailed to the central tree on the south side at or near d.b.h. This number will be placed on the field map with a circle to show the plot location.

  Area of the plot will be given as 1/4 acre, 1/8 acre, etc.

  Actual age of the stand will be gotten as closely as possible. Pines can be counted back by whorls accurately enough for the purpose. Hardwoods in even-aged stands should have an overtopped tree bored at stump height to check ages. In uneven-aged stands the range of ages should be given.

  Economic age is used for stands which, at some period, have grown under an overwood. The figure given is based on the age which would have been required to reach present size if the stand had been free to grow.

  Density class is an ocular estimate of degree of stocking. Fully stocked stands are called density class I, medium stocked one II and understocked III.

  Site class is also largely based on ocular estimates of the relative growth and development of the species occupying the sites. Three classes are used and, in general, it can be said that the west slope on the east side of Tom Swamp Pond is site I, most of Prospect Hill II, and the sandy or gravelly eskers in Tom Swamp VII site III. The seepage areas in all blocks are apt to approach site I if not too wet.

  Form is simply used to designate whether a stand is even-aged (E.A.), uneven-aged (U.A.) or two-storied.

  Form class is the arbitrary group of absolute form-quotient units into which a given stand falls. These classes are estimated in five-unit classes, i.e. .60, .65 etc. Form classes in white pine can be estimated by use of the crown indexes and dead lengths in Harvard Forest Bulletin 13 until the cruiser becomes enough accustomed to estimating by means of age and density of stocking. As a guide, the open grown, 50-year-old white pines in the north end of the Adams-Fay lot are in form class 50 while the older, densely grown ones between the strip cuttings in the south end of the lot are in class 72. With all hardwoods except gray birch the average form class of trees 7" and over is 65 (Hawley and Wheaton, 1926), with the trend indicated to be slightly upward for smaller sizes but anything measured of the better hardwoods can be assumed to fall in this class. Gray birch falls between form classes .55 and .60, being closer to .60.

  Quality for pine stands is designated as "better than box," "box," and "poor box" and the hardwoods as "sawtimber" or "cordwood."

  Ground cover is described to give an extensive picture of the wildlife food production in the stands. Ground cover should first be described as "dense," medium," "sparse" or lacking and then the species included should be listed in order of abundance. Whenever possible, plants should be identified to species.

  Advance growth as described is, of course, the guide as to what may be expected as the next crop and as to treatment needed. It should be described first as "dense," "medium, " spars" or lacking and then the species should be listed in order of abundance.

  Silvicultural condition and treatment is used to describe the stand in general terms as to what has been done and what is needed. This is one of the most important pieces of information to be gotten and, accordingly, should not be slighted.

  Ring width is used in mature stands to denote whether the average tree is making appreciable growth. A boring is made at or near breast height to a depth of around one inch and the ring widths for the last ten years marked in the space provided on the plot sheet with the bark indicated as a longer line, thus: '''''''| . After the current year's growth has begun, neglect that and place the bark mark at the start of this growth.

  Remarks is used for anything pertinent that occurs to the cruiser by way of description or needed treatment.

  Tally of the timber on the plot is by means of diameters taken with a tape and heights are gotten to the nearest five-foot class [minimum diameter recorded = 2 inches; trees tallied by species, 1" diameter class and 5' height class]. A Faustmann hypsometer or Abney graduated in per cent is used for checking heights and for getting the cruiser accustomed to estimating heights accurately. All trees are listed by species.

  Computation of Tally

  Volume Tables (all cubic foot). Better hardwoods - Hawley and Wheaton, F.C. 65. Cordwood - Red maple, Cook, Mass. Table; Gray birch, Hawley and Wheaton, F.C. 60. White pine - H.F. Bulletin 13. Hemlock - Merrill. Spruce - H.F. Bulleting 19. Red pine - Canadian Table (F. Class).

  Yield Tables. White pine - Cook. Spruce - H.F. Bulletin 19. Hemlock - Merrill and Hawley, 1924. Better hardwoods - Spaeth. Inferior hardwoods - Spaeth.

• Use:

  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.

• Citation:

  Hosley N. 2023. Vegetation Inventory of Harvard Forest 1937. Harvard Forest Data Archive: HF039 (v.19). Environmental Data Initiative: https://doi.org/10.6073/pasta/78ff0e3735ccb5dcac6ef8969ffeba89.

Detailed Metadata

hf039-01: plot data for Prospect Hill, Tom Swamp and Slab City

1. tract: tract of land surveyed
   • PH: Prospect Hill
   • TS: Tom Swamp
   • SC: Slab City
2. comp: compartment number (1-10)
3. stand: qualitative identifier assigned by surveyor (Cd=cordwood; Hd=hardwood; Hm=hemlock; P=pine; Sp=spruce; Sw=softwood)
4. plotno_37: original (1937) plot number
5. size_acres: area in acres. Plots were either ¼ acre (0.25), 1/8 acre (0.125) or 1/16 acre (0.0625) (unit: acre / missing value: NA)
6. date: original survey date. Typed into data file for SC only, but on paper data sheets for all plots.
7. age: approximate tree age (years)
8. dens: density classification (I – III+). Fully stocked stands are called density class I, medium stocked are II and understocked are III.
9. site_class: classification (I – III+). Three classes are used and, in general, it can be said that the west slope on the east side of Tom Swamp Pond is site I, most of Prospect Hill II, and the sandy or gravelly eskers in Tom Swamp VII site III. The seepage areas in all blocks are apt to approach site I if not too wet.
10. quality: best use of wood (Sw=sawtimber; Cd=Cordwood; Bx=for box construction; Pine Box=sometimes P Bx; Fair Cd=Bx, Sw; Poor Cd=Bx, Sw, sometimes abbreviated as Cd-, etc.; Med; Bx+=better than box)
11. litter_in: litter layer (unit: inch / missing value: NA)
12. form: form
    • Ea: even-aged
    • Ua: uneven-aged
    • TS: two-storied
13. form_class: see methods
14. ring_width_mm: measurement of typically 10 years of growth of a cored tree (mm)
15. yrs_ring: number of rings included in the ring width
16. ring_spec: acronym for species of cored tree
    • ACPE: Acer pensylvanicum
    • ACRU: Acer rubrum
    • ACSA: Acer saccharum
    • ALsp: Alder species
    • BEsp: Betula species
    • BEAL: Betula alleghaniensis
    • BELE: Betula lenta
    • BEPA: Betula papyrifera
    • BEPO: Betula populifolia
    • CASP: Carya sp.
    • CADE: Castanea dentata
    • FAGR: Fagus grandifolia
    • FASP: Fagus species
    • FRAM: Fraxinus americana
    • FRNI: Fraxinus nigra
    • LAsp: Larix species
    • LADE: Larix decidua
    • LALA: Larix laricina
    • MAsp: Malus species
    • NYSY: Nyssa sylvatica
    • OSVI: Ostrya virginiana
    • PIAB: Picea Abies
    • PIRU: Picea rubens
    • PISP: Picea sp.
    • PINE: Pine species
    • PIRE: Pinus resinosa
    • PIRI: Pinus rigida
    • PIST: Pinus strobus
    • PISY: Pinus sylvestris
    • POSP: Populus sp.
    • PRPE: Prunus pensylvanica
    • PRSE: Prunus serotina
    • PRVI: Prunus virginiana
    • QUAL: Quercus alba
    • QUCO: Quercus coccinea
    • QUPA: Quercus palustrus
    • QURU: Quercus rubra
    • QUVE: Quercus velutina
    • ROPS: Robinia pseudoacacia
    • SAAL: Sassafras albidum
    • SOAM: Sorbus Americana
    • SPSP: Spirea Species
    • TIAM: Tilia Americana
    • TSCA: Tsuga Canadensis
    • ULAM: Ulmus americana
    • ULSP: Ulmus sp.
17. dom_spec: four-letter acronym for dominant species, if listed, or very obvious from data. Codes as for ring.spec
18. plot_92: plot number assigned in 1992 sampling. Exists only for PH tract
19. url: link to digital archive for the field data sheet

hf039-02: tree data

1. tract: tract of land surveyed
   • PH: Prospect Hill
   • TS: Tom Swamp
   • SC: Slab City
2. comp: compartment number 1-9 on Prospect Hill
3. plotno_37: original (1937) plot number
4. species: four-letter acronym
   • ACPE: Acer pensylvanicum
   • ACRU: Acer rubrum
   • ACSA: Acer saccharum
   • BEAL: Betula alleghaniensis
   • BELE: Betula lenta
   • BEPA: Betula papyrifera
   • BEPO: Betula populifolia
   • CASP: Carya sp.
   • FAGR: Fagus grandifolia
   • FRAM: Fraxinus americana
   • FRNI: Fraxinus nigra
   • LADE: Larix decidua
   • NYSY: Nyssa sylvatica
   • OSVI: Ostrya virginiana
   • PIRU: Picea rubens
   • PISP: Picea sp.
   • PIRE: Pinus resinosa
   • PIRI: Pinus rigida
   • PIST: Pinus strobus
   • PISY: Pinus sylvestris
   • POSP: Populus sp.
   • PRPE: Prunus pensylvanica
   • PRSE: Prunus serotina
   • PRVI: Prunus virginiana
   • QUAL: Quercus alba
   • QUCO: Quercus coccinea
   • QURU: Quercus rubra
   • QUVE: Quercus velutina
   • ROPS: Robinia pseudo-acacia
   • TIAM: Tilia americana
   • TSCA: Tsuga canadensis
   • ULSP: Ulmus sp.
5. dbh_in: diameter-breast-height in 1-inch classes (unit: inch / missing value: NA)
6. ht_ft: height in feet; 5-foot classes (unit: foot / missing value: NA)
7. no_stem: number of individuals per DBH*HEIGHT class (unit: number / missing value: NA)
8. plot_92: GIS plot number assigned to corresponding 1992 plots. Plots not sampled in 1992 = NA

hf039-03: vegetation species list

1. code: : six-letter code for each taxon. Typically the first 3 letters of the genus followed by the first 3 letters of the species, but to avoid non-unique codes, in a few cases it is the first 4 letters of the genus followed by ‘sp’ or the first 2 letters of the species. . In one case (Smilax sp.) the code is simply the genus name.
2. genus_species: genus and species of the taxon
3. genus: genus of the taxon
4. common_name: common name for the taxon or group
5. life_form: type of life form
   • clubmoss: clubmoss
   • fern: true ferns & succulent ferns
   • graminoid: grasses and sedges
   • herb: non-woody vascular flowering plant (not graminoid)
   • moss: bryophyte
   • shrub: woody vascular plant that typically does not reach tree size
   • tree: woody vascular plant that typically reaches tree size
6. ph: taxon recorded in at least one plot on the Prospect Hill Tract (151 of the taxa noted in the vegetation survey; all species also seen in SC & TS)
   • 1: presence
   • 0: absence
7. ts: taxon recorded in at least one plot on the Tom Swamp Tract (192 of the taxa noted in the vegetation survey; all species also seen in SC)
   • 1: presence
   • 0: absence
8. sc: taxon recorded in at least one plot on the Slab City Tract (all 201 taxa noted in the vegetation survey)
   • 1: presence
   • 0: absence
9. notes: alternative names or information about how the plant was noted on the field data sheets

hf039-04: vegetation presence/absence data

1. tract: tract of land surveyed
   • PH: Prospect Hill
   • TS: Tom Swamp
   • SC: Slab City
2. comp: compartment number (1-10)
3. plotno_37: original (1937) plot number
4. acepen: Acer pensylvanicum
   • 1: presence
   • 0: absence
   • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
5. acerub: Acer rubrum
   • 1: presence
   • 0: absence
   • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
6. acesac: Acer saccharum
   • 1: presence
   • 0: absence
   • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
7. acespi: Acer spicatum
   • 1: presence
   • 0: absence
   • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
8. achmil: Achillea millefolium
   • 1: presence
   • 0: absence
   • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
9. actpac: Actaea pachypoda
   • 1: presence
   • 0: absence
   • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
10. adiped: Adiantum pedatum
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
11. alninc: Alnus incana
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
12. alnspp: Alnus species
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
13. amearb: Amelanchier arborea
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
14. amecan: Amelanchier canadensis
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
15. ampbra: Amphicarpaea bracteata
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
16. anespp: Anemone spp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
17. apoand: Apocynum androsaemifolium
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
18. aranud: Aralia nudicaulis
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
19. araspp: Aralia sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
20. aritri: Arisaema triphyllum
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
21. aromel: Aronia melanocarpa
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
22. arospp: Aronia sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
23. ascspp: Asclepsias sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
24. aspspp: Asplenium sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
25. astacu: Aster acuminatis
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
26. astdiv: Aster divaricatus
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
27. astspp: Aster sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
28. betall: Betula allegheniensis
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
29. betlen: Betula lenta
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
30. betpap: Betula papyrifera
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
31. betpop: Betula populifolia
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
32. betspp: Betula sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
33. botvir: Botrychium virginianum
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
34. carspp: Carex spp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
35. carcar: Carpinus caroliniana
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
36. carysp: Carya sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
37. casden: Castanea dentata
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
38. celsca: Celastrus scandens
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
39. cepocc: Cephalanthus occidentalis
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
40. chiumb: Chimaphila umbellata
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
41. clevir: Clematis virginiana
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
42. clibor: Clintonia borealis
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
43. conmaj: Convallaria majalis L.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
44. conspp: Convolvulus sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
45. copgro: Coptis groenlandica
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
46. coralt: Cornus alternifolia
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
47. corcan: Cornus canadensis
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
48. corcor: Corylus cornuta
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
49. corysp: Corylus sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
50. craspp: Crataegus sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
51. cypaca: Cypripedium acaule
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
52. denpun: Dennstaedtia punctilobula
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
53. dielon: Diervilla lonicera
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
54. drycar: Dryopteris carthusiana
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
55. drymar: Dryopteris marginalis
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
56. dryspp: Dryopteris sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
57. epirep: Epigaea repens
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
58. epiang: Epilobium angustifolium
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
59. epipub: Epipactis pubescens
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
60. faggra: Fagus grandifolia
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
61. fravir: Fragaria virginiana
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
62. fraame: Fraxinus americana
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
63. franig: Fraxinus nigra
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
64. gauhis: Gaultheria hispidula
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
65. gaupro: Gaultheria procumbens
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
66. gayspp: Gaylussacia sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
67. goorep: Goodyera repens
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
68. hamvir: Hamamelis viginiana
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
69. hypspp: Hypnum sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
70. ilever: Ilex verticillata
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
71. impcap: Impatiens capensis
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
72. irispp: Iris sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
73. iriver: Iris versicolor
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
74. juncom: Juniperus communis
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
75. junhor: Juniperus horizontalis
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
76. junvir: Juniperus virginiana
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
77. kalang: Kalmia angustifolia
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
78. kallat: Kalmia latifolia
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
79. kalspp: Kalmia sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
80. lacspp: Lactuca sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
81. lardec: Larix decidua
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
82. larlar: Larix laricina
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
83. larspp: Larix sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
84. latspp: Lathyrus sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
85. linben: Lindera benzoin
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
86. lobspp: Lobelia sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
87. loncan: Lonicera canadensis
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
88. lonspp: Lonicera sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
89. lontar: Lonicera tartarica
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
90. lycann: Lycopodium annotinum
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
91. lyccom: Lycopodium complanatum
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
92. lycluc: Lycopodium lucidulium
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
93. lycobs: Lycopodium obscurum
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
94. lycspp: Lycopodium sp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
95. lyolig: Lyonia ligustrina
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
96. lysqua: Lysimachia quadifolia
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
97. lysspp: Lysimachia spp.
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
98. maican: Maianthemum canadense
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
99. maiste: Maianthemum stellata
    • 1: presence
    • 0: absence
    • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
100. malspp: Malus sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
101. medvir: Medeola virginiana
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
102. mitrep: Mitchella repens
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
103. mitdyp: Mitella dyphilla
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
104. moneun: Moneses uniflora
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
105. monuni: Monotropa uniflora
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
106. myrgal: Myrica gale
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
107. mosssp: moss
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
108. nemmuc: Nemopanthus mucronata
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
109. nyssyl: Nyssa sylvatica
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
110. onosen: Onoclea sensibilis
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
111. osmcin: Osmunda cinnamomea L.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
112. osmcla: Osmunda claytoniana
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
113. osmreg: Osmunda regalis
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
114. ostvir: Ostrya virginiana
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
115. oxaace: Oxalis acetocella
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
116. parqui: Parthenocissus quinquefolia
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
117. phespp: Phegopteris sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
118. picabi: Picea abies
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
119. picrub: Picea rubens
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
120. picspp: Picea sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
121. pinres: Pinus resinosa
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
122. pinrig: Pinus rigida
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
123. pinspp: Pinus sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
124. pinstr: Pinus strobus
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
125. pinsyl: Pinus sylvestris
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
126. poaspp: Poa spp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
127. polpau: Polygala paucifolia
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
128. polbif: Polygonatum biflorum
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
129. polper: Polygonum persicaria
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
130. polvir: Polypodium virginianum
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
131. polvul: Polypodium vulgare
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
132. polacr: Polystichum acrostichoides
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
133. popspp: Populus sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
134. potcan: Potentilla canadensis
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
135. potspp: Potentilla sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
136. prespp: Prenanthes sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
137. pruvul: Prunella vulgaris
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
138. prupen: Prunus pensylvanica
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
139. pruser: Prunus serotina
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
140. pruvir: Prunus virginiana
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
141. pteaqu: Pteridium aquilinum
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
142. pyrame: Pyrola americana
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
143. pyrell: Pyrola elliptica
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
144. pyrspp: Pyrola sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
145. quealb: Quercus alba
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
146. quepal: Quercus palustris
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
147. querub: Quercus rubra
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
148. quevel: Quercus velutina
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
149. ranspp: Ranunculus sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
150. rhoper: Rhododendron periclymenoides
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
151. rhospp: Rhododendron sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
152. rhussp: Rhus sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
153. rhutyp: Rhus typhina
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
154. robpse: Robinia pseudoacacia
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
155. rosasp: Rosa sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
156. rubaca: Rubus acaulis
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
157. ruacu: Rubus acueatissimus
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
158. ruball: Rubus alleghaniensis
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
159. rubhis: Rubus hispida
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
160. rubida: Rubus idaeus
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
161. rubocc: Rubus occidentalis
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
162. rubodo: Rubus odoratis
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
163. rubpub: Rubus pubescens
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
164. rubspp: Rubus sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
165. rumace: Rumex acetosella
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
166. samcan: Sambucus canadensis
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
167. samrac: Sambucus racemosa
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
168. sasalb: Sassafras albidum
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
169. smirac: Smilacina racemosa
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
170. smispp: Smilacina sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
171. smilax: Smilax sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
172. soldul: Solanum dulcimara
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
173. solspp: Solidago sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
174. sorame: Sorbus americana
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
175. sphasp: Sphagnum sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
176. spialb: Spirea alba
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
177. spisal: Spirea salcifolia
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
178. spispp: Spirea sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
179. spitom: Spirea tomentosa
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
180. taxcan: Taxus canadensis
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
181. thenov: Thelypteris noveboracensis
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
182. tiacor: Tiarella cordifolia
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
183. tilame: Tilia americana
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
184. toxrad: Toxicodendron radicans
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
185. toxver: Toxicodendron vernix
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
186. tribor: Trientalis borealis
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
187. trirep: Trifolium repens
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
188. trilsp: Trillium sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
189. tsucan: Tsuga canadensis
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
190. ulmame: Ulmus americana
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
191. uvuses: Uvularia sessifolia
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
192. vacang: Vaccinium angustifolium
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
193. vaccor: Vaccinium corymbosum
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
194. vaccsp: Vaccinium sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
195. vervir: Veratrum viride
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
196. vertha: Verbascum thapsus
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
197. vibace: Viburnum acerfolium
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
198. vibcas: Viburnum cassenoides
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
199. vibden: Viburnum dentatum
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
200. viblat: Viburnum latanoides
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
201. vibnud: Viburnum nudum var. cassonoides
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
202. vibspp: Viburnum sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
203. viospp: Viola sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed
204. vitspp: Vitis sp.
     • 1: presence
     • 0: absence
     • NA: plot surveyed during winter or other conditions in which a species presence could not be assessed