Details and Metadata

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Methods

The methods followed in the creation of the dataset, including description of field, laboratory and processing steps, and quality control procedures

Current Methods

  • Plot establishment
    Started: 1991-05-01

    One plot established at Proctor Maple Research Center in 1991.


  • Started: 1992-05-01

    Eight plots on west slope of Mt. Mansfield paired at 4 elevations: 1400, 2200, 3000, and 3800 feet. Used to assess changes in crown condition, injury to crown and bole, growth, regeneration, understory cover.


  • Started: 1990-05-01

    One plot established in the Lye Brook Wilderness Area as part of the National Forest Health Monitoring Program at 2300 ft.


  • Started: 1994-05-01

    Four plots in the Lye Brook Wilderness Area paired at 1400 and 2300 feet, in addition to the NFHM plot at 2300 feet.


  • Started: 1997-05-01

    Six plots established in 1997 on the east slope of the mountain in Ranch Valley paired at 1400, 2200, and 3000 feet.

Past Methods (No longer in use)

  • Ice storm effects
    Started: 1998-01-30
    Ended: 1998-06-01

    In 1998, conducted special spring survey on plots affected by the January ice storm. Measurements included bole breakage and crown loss (%).

Dataset Fields

Detailed documentation of the fields comprising the dataset, including the type of measurement, units where applicable, and any controlled vocabularies or code lists present in the data


Field Name Caption Description Additional Information
CountCount

Frequency of specific species occurence

Measurement type:
Unit: unavailable
CountClass1CountClass1

A seedling is counted as a class one if it is a conifer that is less than 6 inches in height or a conifer than is less than 12 inches in height.

Measurement type: Interval
Units:
Precision: 1
PlotIDPlot ID

Plot ID

Measurement type: Nominal
CountClass2CountClass2

A seedling is counted as a class two if it is a conifer that is equal or greater than 6 inches in height or it is a hardwood that is greater than or equal to 12 inches in height.

Measurement type: Interval
Units:
Precision: 1
YearYear

Year

Measurement type: DateTime
Date/Time Format: YYYY
SubplotIDSubplot ID

Subplot ID

Measurement type:
Unit: unavailable
SpeciesSpecies

Seedling species

Measurement type: Nominal
Unit: unavailable
VT FHM Seedling Species List
+ show
Appears in data asMeaning
371yellow birch (Betula alleghaniensis) -
318sugar maple (Acer saccharum) -
531American beech (Fagus grandifolia) -
315striped maple (Acer pensylvanicum) -
316red maple (Acer rubrum) -
376mountain paper birch (Betula cordifolia) -
319mountain maple (Acer spicatum) -
701eastern hophornbeam; hophornbeam (Ostrya virginiana) -
541white ash (Fraxinus americana) -
129eastern white pine (Pinus strobus) -
370birch (Betula sp.) -
999 (Radiocystis ) -
375paper birch (Betula papyrifera) -
743bigtooth aspen (Populus grandidentata) -
402bitternut hickory; pignut (Carya cordiformis) -
261Canada hemlock; hemlock spruce (Tsuga canadensis) -
762black cherry (Prunus serotina) -
97red spruce (Picea rubens) -
12balsam fir (Abies balsamea) -
833northern red oak (Quercus rubra) -
356serviceberry (Amelanchier sp.) -
837black oak (Quercus velutina) -
372sweet birch (Betula lenta) -
802white oak (Quercus alba) -
71tamarack (Larix laricina) -
351red alder (Alnus rubra) -
935American mountain-ash (Sorbus americana) -
544green ash (Fraxinus pennsylvanica) -
310maples (Acer sp.) -
975slippery elm (Ulmus rubra) -
761pin cherry (Prunus pensylvanica) -
317silver maple (Acer saccharinum) -
391American hornbeam (Carpinus caroliniana) -
407shagbark hickory (Carya ovata) -
693black gum, black tupelo, blackgum (Nyssa sylvatica) -
543black ash (Fraxinus nigra) -
746quaking aspen (Populus tremuloides) -
91Norway spruce (Picea abies) -
951American basswood (Tilia americana) -
379gray birch (Betula populifolia) -
350alnus spp. (Alnus sp.) -
314black sugar maple (Acer nigrum) -
972American elm (Ulmus americana) -
742Eastern cottonwood (Populus deltoides) -
832chestnut oak ( Quercus prinus) -

Sampling Equipment

Equipment and software used to collect data, including how that equipment was used.

No sampling equipment recorded for this dataset

Site Characteristics

The spatial extent of the dataset site coverage, and descriptions of the spatial extent and context for the data collection

  • Site Description

Dataset Notes

Notes describing any special conditions or considerations for understanding the quality and consistency of the data


Start Date End Date Note Date Entered
2017-11-29 00:00:002017-11-29 23:59:59Counts from 1991 to 2013 were entered into the CountClass2 field because they followed a protocol that counted conifers if they were taller than or equal to 6 inches in height and hardwoods if they were taller than or equal to 12 inches in height. From 2014 to 2016 seedlings were counted as a whole without consideration for classes based on height. In 2017 a different protocol was followed where seedlings were broken down by Class1 (Conifer =12 in tall).2017-11-29 10:39:52