Dataset: Birch Productivity Data

Methods

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

Past Methods (No longer in use)

• Selecting sample trees
  Started: 1996-10-01
  Ended: 1996-12-01

  Belt transects 3 meters wide and 150 meters long were used to select sample trees. All white birch trees along the transects established at 4 elevations were sampled. The compass bearing used at each elevation was: 730 m=N80E, 820 m=N80E, 910 m=N72E, and 1000 m=N74E. A random number generator was used to select two trees per DBH class to be cored at each elevation. DBH classes used were: <10.16 cm; 10.16-15.23 cm; 15.24-20.31 cm; 20.32-25.39 cm; and >25.4 cm. DBH was measured to the nearest ten

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

Sampling Equipment

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

Site Characteristics

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

• Site Description

  Browns River headwaters on Mount Mansfield. Four elevations were used off the Teardrop Trail: 730, 820, 910 and 1000 meters.