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

  • Monitoring sites
    Started: 1991-10-30

    Browns River and Stevensville Brook are monitored at 1400 foot elevation on each.

  • Sample collection

    Duplicate samples of aquatic macroinvertebrates were collected using a standardized "kick-net" procedure. A sample consists of all the organisms and detritus dislodged from the substrate during two minutes of active substrate disturbance. Temperature, pH, alkalinity, and specific conductance of the water column are measured at the time the sample is collected. Organisms from the sample are separated from detritus and sorted into taxonomic groups.

    Software: Paradox software

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
SiteIDSite ID

Codes for the sample collection sites

Measurement type: Nominal
LocationLocation

Location of Site

Measurement type: Nominal
StationStation

Number of the station at site

Measurement type: Nominal
TownTown

Town of site

Measurement type: Nominal
DescriptionDescription

Description of site

Measurement type: Nominal
LatitudeLatitude

Angular distance north or south of the equator

Measurement type: Ratio
Unit: unavailable
Precision: 0.000001
LongitudeLongitude

Angular distance east or west of Greenwich, England

Measurement type: Ratio
Unit: unavailable
Precision: 0.000001
DrainageAreaDrainage Area

Drainage Area

Measurement type: Ratio
Units: square kilometer
Precision: 0.1
Elevation (feet)Elevation

Elevation of the stream at the site from which sample was collected

Measurement type: Ratio
Unit: unavailable
Precision: 10
USGSMapNoUSGS Map #

Code for VT DEC USGS map that was used

Measurement type: Ordinal
Site Map Code
+ show
Appears in data asMeaning of code
22DUnderhill
22BStowe

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

    The two sampling sites are located in the upper reaches of the Brown's River watershed- one on Stevensville Brook and one on the Brown's River upstream of its confluence with Stevensville Brook. Both sites are at an elevation of 1400 feet.

    Minimum Altitude: 1400

    Maximum Altitude: 1400