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

  • Mean annual basal increment changes

    Raw data collected (1993) by Jeffrey Hughes to study changes in mean annual basal area increment (BAI) of canopy sugar maple trees growing at and below the species' elevation limit on Five Vermont mountainsides, in 5 year intervals, from 1963 to 1992.

Past Methods (No longer in use)

  • Sampling for differences in distribution
    Started: 1992-06-01
    Ended: 1997-01-14

    Evaluation of sugar maple, yellow birch, paper birch and mountain birch on several Vermont mountains to measure differences in distriubtion as it relates to elevation-related climate.

  • Evaluation
    Started: 1992-06-01
    Ended: 1997-01-14

    Overstory and understory individuals evaluated.

  • Composition of data
    Started: 1992-06-01
    Ended: 1997-01-14

    Data includes species, density, relative density, basal area, relative basal area, and radial growth.

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
0_5ya0_5ya

0_5ya

Ratio Units: cm
11_15ya11_15ya

11_15ya

Ratio Units: cm
16_20ya16_20ya

16_20ya

Ratio Units: cm
21_25ya21_25ya

21_25ya

Ratio Units: cm
26_30ya26_30ya

26_30ya

Ratio Units: cm
6_10ya6_10ya

6_10ya

Ratio Units: cm
BAI_cm2_aBAI_cm2_a

BAI_cm2_a

Ratio Units:
BAI_cm2_bBAI_cm2_b

BAI_cm2_b

Ratio Units:
BAI_cm2_cBAI_cm2_c

BAI_cm2_c

Ratio Units:
BAI_cm2_dBAI_cm2_d

BAI_cm2_d

Ratio Units:
BAI_cm2_fBAI_cm2_f

BAI_cm2_f

Ratio Units:
BA_cm2_eBA_cm2_e

BA_cm2_e

Ratio Units:
circ_cmcirc_cm

circ_cm

Ratio Units:
CoreCore

Nominal
Date anal.Date anal.

Date anal.

Nominal
Date_collectedDate_collected

Date_collected

Nominal
dbh_b_cmdbh_b_cm

dbh_b_cm

Ratio Units: cm
dbh_cmdbh_cm

dbh_cm

Ratio Units: cm
elevationelevation

elevation

Nominal
elev_meterselev_meters

elev_meters

Interval Units: meters
radius_cmradius_cm

radius_cm

Ratio Units: cm
RG_cm_11_15yaRG_cm_11_15ya

RG_cm_11_15ya

Ratio Units: cm
RG_cm_16_20yaRG_cm_16_20ya

RG_cm_16_20ya

Ratio Units: cm
RG_cm_21_25yaRG_cm_21_25ya

RG_cm_21_25ya

Ratio Units: cm
RG_cm_26_30yaRG_cm_26_30ya

RG_cm_26_30ya

Ratio Units: cm
RG_cm_6_10yaRG_cm_6_10ya

RG_cm_6_10ya

Ratio Units: cm
RG_cm__0_5yaRG_cm__0_5ya

RG_cm__0_5ya

Ratio Units: cm
Sample_numberSample_number

Sample_number

Nominal
SiteSite

Site

Nominal
YearYear

Year

DateTime Date/Time Format: YYYY

Sampling Equipment

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

Past Sampling Equipment (No longer in use)

  • Increment core, dbh tape
    Started: 1992-06-01
    Ended: 1997-01-14

    Increment core, dbh tape

Site Characteristics

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

  • Site Description

    West slope of Mount Mansfield in the Stevensville Brook watershed.

  • Site Description

    Five elevations off the Butler Lodge trail: 500, 600, 700, 800, 900 m

  • Site Description

    3-5 10 X 30 m sampling plots/elevation for trees and saplings.

  • Site Description

    30 - 1 X 1 m sampling plots/elevation for germinants and seedlings.