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
Sample collection and analysis
Samples were collected biweekly. pH measurements are then taken. Samples were transported to a lab for NH4+ and DOC analyses. Other stream chemistry measurements include Cl, Mg, Na, Al, Ca, K, H, NO3, SO4, Fe, Mn, and ANC. Soil water measurements included all of the above besides ANC.
Soil nitrification data
Soil nitrification data collection used the buried bag method plus 2' PVC tubes with 3 in each forest type. Three lysimeters were installed in organic and B horizons in each forest type. Soils and vegetation were characterized at the intensive soil chemistry sites.
Stream sampling cut back to 4 sites every three weeks.
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 |
|---|---|---|---|
| ID | ID | Unique record ID | Measurement type: Ordinal |
| site | Site | Survey location | Measurement type: Nominal |
| date | Date | Date | Measurement type: DateTime Date/Time Format: YYYY-MM-DDThh:mm:ss |
| ANCm_meq_L | Acid Neutralizing Capacity | ANC is used to determine the susceptibility of sites to acidification | Measurement type: Ratio Unit: milligrams per liter Precision: 0.01 |
| SO42neg_negS_mg_L | SO4-S | The fraction of the sulfate sample attributable to sulfur alone | Measurement type: Ratio Unit: micrograms per liter Precision: 0.01 |
| NO3neg_negN_mg_L | NO3-N | Nitrate concentration | Measurement type: Ratio Unit: micrograms per liter Precision: 0.01 |
| Clneg_mg_L | Chloride Ion Concentration | Chloride ion concentration | Measurement type: Ratio Unit: micrograms per liter Precision: 0.01 |
| Ca2pos_mg_L | Calcium Ion Concentration | Calcium ion concentration | Measurement type: Ratio Unit: micrograms per liter Precision: 0.01 |
| Mg2pos_mg_L | Magnesium Ion Concentration | Magnesium ion concentration | Measurement type: Ratio Unit: micrograms per liter Precision: 0.01 |
| Napos_mg_L | Sodium Ion Concentration | Sodium ion concentration | Measurement type: Ratio Unit: micrograms per liter Precision: 0.01 |
| Kpos_mg_L | Potassium Ion Concentration | Potassium ion concentration | Measurement type: Ratio Unit: micrograms per liter Precision: 0.01 |
| Hpos_mg_L | Hydrogen Ion Concentration | Hydrogen ion concentration | Measurement type: Ratio Unit: micrograms per liter Precision: 0.001 |
| Ali_mg_L | Inorganic Aluminum | Inorganic aluminum | Measurement type: Ratio Unit: micrograms per liter Precision: 0.01 |
| Alo_mg_L | Organic Aluminum | Organic aluminum | Measurement type: Ratio Unit: micrograms per liter Precision: 0.01 |
| NH4pos_mg_L | Ammonium Concentration | Ammonium concentration | Measurement type: Ratio Unit: micrograms per liter Precision: 0.001 |
| Fe_mg_L | Iron Concentration | Iron concentration | Measurement type: Ratio Unit: micrograms per liter Precision: 0.01 |
| Mn_mg_L | Manganese Concentration | Manganese concentration | Measurement type: Ratio Unit: micrograms per liter Precision: 0.001 |
| TOC_mg_L | Total Organic Carbon | Total organic carbon | Measurement type: Ratio Unit: micrograms per liter Precision: 0.1 |
| SiO2_mg_L | Silicon Dioxide Concentration | Silicon Dioxide concentration: A common soil component | Measurement type: Ratio Unit: micrograms per liter Precision: 0.1 |
| Cond_mS_cm | Conductivity | Measure of streams ability to conduct electricity | Measurement type: Ratio Unit: microsecond Precision: 0.1 |
| Temp_C | Temperature | Temperature | Measurement type: Interval Unit: degree Celsius Precision: 0.1 |
Sampling Equipment
Equipment and software used to collect data, including how that equipment was used.
Current Equipment
Portable pH meter, streamwater grab sampler
Portable pH meter, streamwater grab sampler
Past Sampling Equipment (No longer in use)
Stream water grab sampler
Started: 1994-05-24
Ended: 1995-08-30Stream water grab sampler
Site Characteristics
The spatial extent of the dataset site coverage, and descriptions of the spatial extent and context for the data collection
- Site Description
Stream sampling initially at 9 sites: 3 on Lye Brook, 2 on tributaries to Lye Brook, 1 on stream on west slopes, 1 on tributary to Bourne Brook, 2 in wetlands near Lye Brook Meadows. Soil nitrification sites in paper birch/red maple stand, sugar maple/spruce/birch stand and in spruce adjacent to a bog. These sites located left center of Lye Brook Wilderness Area (north of Lye Brook Trail and west of Bourn Pond Shelter).