• Address:
  705 Spear Street
  South Burlington, Vermont 05403
  United States of America
  
  Phone: (802) 391-4135
  Email: femc@uvm.edu
  Website: www.uvm.edu/femc

Examine the link between soil nitrification and stream nitrate export.

• dataset_eml_attributelistlabel: Watershed Name

• dataset_eml_attributelistdescription: The name of the watershed

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Watershed Site

• dataset_eml_attributelistdescription: The site within the watershed

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Watershed ID Number

• dataset_eml_attributelistdescription: Watershed ID number

• dataset_eml_attributeliststoragetype: int

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Sample Point ID

• dataset_eml_attributelistdescription: Unique number for each sampling point (except Sleepers and Buck)

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Field Nitrate Concentration

• dataset_eml_attributelistdescription: Nitrate concentration in the field

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• Unit: millimoles per kilogram
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Nitrate Concentration After 20 Hours

• dataset_eml_attributelistdescription: Nitrate concentration after about 20 h

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• Unit: millimoles per kilogram
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Net Nitrification Rate

• dataset_eml_attributelistdescription: Net nitrification rate

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• Unit: micromoles per hour per kilogram
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Field Ammonium Concentration

• dataset_eml_attributelistdescription: Ammonium concentration in the field

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• Unit: millimoles per kilogram
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Ammonium Concentration after 20 Hours

• dataset_eml_attributelistdescription: Ammonium concentration after about 20 h

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• Unit: millimoles per kilogram
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Ammonification Rate

• dataset_eml_attributelistdescription: Ammonification rate

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• Unit: micromoles per hour per kilogram
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Nitrification and Ammonification Rate Sum

• dataset_eml_attributelistdescription: Sum of the nitrification and ammonification rates

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Nitrification Rate Per kg N

• dataset_eml_attributelistdescription: Nitrification rate per kg N

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Nitrification Rate Per kg C

• dataset_eml_attributelistdescription: Nitrification rate per kg C

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Nitrate Fraction of Inorganic N After 20 Hours

• dataset_eml_attributelistdescription: Fraction of inorganic N that is nitrate, after about 20 hF

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributeliststandardunit: customProportion
• dataset_eml_attributelistprecision: 0.0001
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Total Soil C

• dataset_eml_attributelistdescription: Total soil C

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• Unit: grams per kilogram
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Total Soil N

• dataset_eml_attributelistdescription: Total soil N

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• Unit: grams per kilogram
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: C / N

• dataset_eml_attributelistdescription: Carbon-to-nitrogen ratio

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributeliststandardunit: customProportion
• dataset_eml_attributelistprecision: 0.0001
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Soil Dry Weight

• dataset_eml_attributelistdescription: Dry weight of 10 mL of soil (volume used in extraction), surrogate for bulk density

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Moisture Content

• dataset_eml_attributelistdescription: Weight of water / dry weight of soil; unit is percent

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributeliststandardunit: percent
• dataset_eml_attributelistprecision: 0.0001
• Unit: percent
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Soil Wetness

• dataset_eml_attributelistdescription: Soil wetness calculated from regression with C and moisture

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001

• dataset_eml_attributelistlabel: Total Soil Hydrogen

• dataset_eml_attributelistdescription: Total soil H (run on defunct CHN analyzer)

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• Unit: grams per kilogram
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Field-Moist Soil pH (Water)

• dataset_eml_attributelistdescription: pH of field-moist soil in water (2:1 V:V)

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: interval
• dataset_eml_attributeliststandardunit: customPH
• dataset_eml_attributelistprecision: 0.01
• Unit: PH
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Field-Most Soil pH (CaCl2)

• dataset_eml_attributelistdescription: pH of field-moist soil in 1 mmol/L CaCl2 (2:1 V:V)

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: interval
• dataset_eml_attributeliststandardunit: customPH
• dataset_eml_attributelistprecision: 0.01
• Unit: PH
• dataset_eml_attributelistnumbertype: real

• dataset_eml_attributelistlabel: Oi+Oe Horizon Depth

• dataset_eml_attributelistdescription: Depth of the Oi + Oe layer

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.01
• Unit: centimeters
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Oa or A Horizon Depthj

• dataset_eml_attributelistdescription: Depth of the Oa or A horizon (horizon sampled)

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.01
• Unit: centimeters
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: OiOe and Oa Sum

• dataset_eml_attributelistdescription: Sum of OiOe and Oa

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.01
• Unit: centimeters
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: E Horizon Present

• dataset_eml_attributelistdescription: Presence or absence of E horizon, Y = 1, N = 0

• dataset_eml_attributeliststoragetype: int

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistenudomainCustom: E Horizon Codes
• dataset_eml_attributelistcodedefinitioncode: Code
• dataset_eml_attributelistcodedefinition: Meaning
• dataset_eml_attributelistcodedefinitioncode: 0
• dataset_eml_attributelistcodedefinition: No E horizon is absent
• dataset_eml_attributelistcodedefinitioncode: 1
• dataset_eml_attributelistcodedefinition: Yes E horizon is present

• dataset_eml_attributelistlabel: Local Slope

• dataset_eml_attributelistdescription: Local slope at sampling site (24")

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.1
• Unit: degrees
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Southness

• dataset_eml_attributelistdescription: Southness of site calculated from compass bearing of slope, cos (180 + degrees)

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.1
• Unit: degrees
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: GIS-Derived Slope

• dataset_eml_attributelistdescription: 10 m (?) slope calculated from DEM, unit?

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.1
• Unit: degrees
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Clinometer-Measured Slope

• dataset_eml_attributelistdescription: 10 m slope measured with a clinometer,

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 100
• Unit: degrees
• dataset_eml_attributelistnumbertype: rational
• dataset_eml_attributelistbounds:
• dataset_eml_attributelistboundsminimum: 0
• dataset_eml_attributelistboumdsmaximum: 180

• dataset_eml_attributelistlabel: Topographical Index

• dataset_eml_attributelistdescription: Topographical index calculated from DEM

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: interval

• dataset_eml_attributelistlabel: Elevation from DEM

• dataset_eml_attributelistdescription: Elevation from DEM

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.1
• Unit: meters
• dataset_eml_attributelistnumbertype: rational
• dataset_eml_attributelistbounds:
• dataset_eml_attributelistboundsminimum: -11000
• dataset_eml_attributelistboumdsmaximum: 8850

• dataset_eml_attributelistlabel: Sugar Maple Basal Area

• dataset_eml_attributelistdescription: Sugar maple basal area

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.0001
• Unit: basal area per hectare
• dataset_eml_attributelistnumbertype: rational

• dataset_eml_attributelistlabel: Yellow Birch Basal Area

• dataset_eml_attributelistdescription: yellow birch basal area

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: American Beech Basal Area

• dataset_eml_attributelistdescription: American beech basal area

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Balsam Fir Basal Area

• dataset_eml_attributelistdescription: Balsam fir basal area

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Paper Birch Basal Area

• dataset_eml_attributelistdescription: Paper birch basal area

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Mountain Maple Basal Area

• dataset_eml_attributelistdescription: Mountain maple basal area

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Striped Maple Basal Area

• dataset_eml_attributelistdescription: Striped maple basal area

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Red Spruce Basal Area

• dataset_eml_attributelistdescription: Red spruce basal area

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: White Ash Basal Area

• dataset_eml_attributelistdescription: White ash basal area (includes 1 mountain ash from Brush D)

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Basswood Basal Area

• dataset_eml_attributelistdescription: Basswood basal area

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Hemlock Basal Area

• dataset_eml_attributelistdescription: Hemlock basal area

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: All Species Basal Area

• dataset_eml_attributelistdescription: Sum of basal area of all species

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Conifer Basal Area

• dataset_eml_attributelistdescription: Sum of basal area of red spruce, balsam fir and hemlock

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Conifer Share of Basal Area

• dataset_eml_attributelistdescription: Percentage of total basal area comprised of conifers

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Sugar Maple Share of Basal Area

• dataset_eml_attributelistdescription: Percentage of total basal area comprised of sugar maple

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Yellow Birch Share of Basal Area

• dataset_eml_attributelistdescription: Percentage of total basal area comprised of yellow birch

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: American Beech Share of Basal Area

• dataset_eml_attributelistdescription: Percentage of total basal area comprised of American beech

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Sugar Maple Density

• dataset_eml_attributelistdescription: Sugar maple density

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Yellow Birch Density

• dataset_eml_attributelistdescription: Yellow birch density

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: American Beech Density

• dataset_eml_attributelistdescription: American beech density

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Red Spruce Density

• dataset_eml_attributelistdescription: Red spruce density

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Conifer Density

• dataset_eml_attributelistdescription: Red spruce + balsam fir + hemlock

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Calcium Concentration (Extractable)

• dataset_eml_attributelistdescription: Extractable concentration of calcium, extracted with NH4-acetate (1.25 mol/L acetate) at pH 4.8, mmol/kg

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Aluminum Concentration (Extractable)

• dataset_eml_attributelistdescription: Extractable concentration of aluminum, extracted with NH4-acetate (1.25 mol/L acetate) at pH 4.8, mmol/kg

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Iron Concentration (Extractable)

• dataset_eml_attributelistdescription: Extractable concentration of iron, extracted with NH4-acetate (1.25 mol/L acetate) at pH 4.8, mmol/kg

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Manganese Concentration (Extractable)

• dataset_eml_attributelistdescription: Extractable concentration of manganese, extracted with NH4-acetate (1.25 mol/L acetate) at pH 4.8, mmol/kg

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Potassium Concentration (Extractable)

• dataset_eml_attributelistdescription: Extractable concentration of potassium, extracted with NH4-acetate (1.25 mol/L acetate) at pH 4.8, mmol/kg

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Magnesium Concentration (Extractable)

• dataset_eml_attributelistdescription: Extractable concentration of magnesium, extracted with NH4-acetate (1.25 mol/L acetate) at pH 4.8, mmol/kg

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Sodium Concentration (Extractable)

• dataset_eml_attributelistdescription: Extractable concentration of sodium, extracted with NH4-acetate (1.25 mol/L acetate) at pH 4.8, mmol/kg

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Sulfur Concentration (Extractable)

• dataset_eml_attributelistdescription: Extractable concentration of sulfur, extracted with NH4-acetate (1.25 mol/L acetate) at pH 4.8, mmol/kg

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Boron Concentration (Extractable)

• dataset_eml_attributelistdescription: Extractable concentration of boron, extracted with NH4-acetate (1.25 mol/L acetate) at pH 4.8, mmol/kg

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Copper Concentration (Extractable)

• dataset_eml_attributelistdescription: Extractable concentration of copper, extracted with NH4-acetate (1.25 mol/L acetate) at pH 4.8, mmol/kg

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Zinc Concentration (Extractable)

• dataset_eml_attributelistdescription: Extractable concentration of zinc, extracted with NH4-acetate (1.25 mol/L acetate) at pH 4.8, mmol/kg

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Phosphorus Concentration (Extractable)

• dataset_eml_attributelistdescription: Extractable concentration of phosphorus, extracted with NH4-acetate (1.25 mol/L acetate) at pH 4.8, mmol/kg

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Molybdenum Concentration (Extractable)

• dataset_eml_attributelistdescription: Extractable concentration of molybdenum, extracted with NH4-acetate (1.25 mol/L acetate) at pH 4.8, mmol/kg

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• Nitrification rates
  • dataset_eml_methodsStartDate: 2002-10-01
    dataset_eml_methodsEndDate: 2004-09-30
    
  • dataset_eml_methoddescription: Potential net nitrification rates were determined by the 1 day method of Ross et al. [2006], which measures the NO3 concentration in the field and again after 1 day’s incubation of a mixed horizon sample. These potential rate measurements are indices and should not be interpreted as actual rates, regardless of the method.

• Wetness
  • dataset_eml_methodsStartDate: 2002-05-01
    dataset_eml_methodsEndDate: 2004-09-30
    
  • dataset_eml_methoddescription: In May 2002 wetness measurements were taken at the H and A horizons using 30-39 samples collected per site. Site wetness or dryness was noted. Samples were sealed, dried, dessicated and water content was generated as kg H2O/ kg dry soil.

• Soil sampling
  • dataset_eml_methodsStartDate: 2002-10-01
    dataset_eml_methodsEndDate: 2004-09-30
    
  • dataset_eml_methoddescription: Soil samples were collected along transects parallel to the stream, usually 50 m apart.

• Soil pH
  • dataset_eml_methodsStartDate: 2002-10-01
    dataset_eml_methodsEndDate: 2004-09-30
    
  • dataset_eml_methoddescription: Soil pH was determined on field-moist 5-ml subsamples in 10 ml of both water (pHw) and 1 mmol l-1 CaCl2 (pHca). Extractable Al, Ca, Mg, K, Na, Fe, Mn, and S were determined on air-dried 2-mm-sieved samples using the Modified Morgan’s soil test procedure (Wolf and Beegle 1995).

• Nitrate and ammonium
  • dataset_eml_methodsStartDate: 2002-10-01
    dataset_eml_methodsEndDate: 2004-09-30
    
  • dataset_eml_methoddescription: Nitrate and ammonium were determined using a flow injection autoanalyzer (Lachat QuickChem AE, Hach Inc., Loveland, Colorado). Carbon and nitrogen were determined by a CHN elemental analyzer (CE440, Exeter Analytical, North Chelmsford, Massachusetts)

• Vegetation sampling
  • dataset_eml_methodsStartDate: 2002-10-01
    dataset_eml_methodsEndDate: 2004-09-30
    
  • dataset_eml_methoddescription: In most watersheds, live trees over 10 cm diameter-breast-height (dbh) were measured in a 10 m radius around each sampling point and smallerdiameter stems were counted by species in a 5 m radius. Basal area and stem density were calculated.

• Site characteristics
  • dataset_eml_methodsStartDate: 2002-10-01
    dataset_eml_methodsEndDate: 2004-09-30
    
  • dataset_eml_methoddescription: GIS position, slope aspect and angle were collected at each sampling point.