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
Started: 1992-05-07Refer to Long-term Water Quality and Biological Monitoring Project for Lake Champlain work/QAPP 1992-2001
Started: 1992-05-07Yearly workplan reflects methodology used for sample collection for that year.
Lake sample collection
Lake stations are visited regularly from late April through October each year. Samples are generally collected using Kemmerer or Van Dorn water bottle devices to form a vertical water column. Temperature, oxygen, conductivity, and pH are measured in vertical profiles using multi-probe sonde technology. Chlorophyll and phytoplankton are integrated composite samples taken from the upper layer of water that receives enough light for photosynthesis (photic zone).
Tributary sample collection
Twelve or more tributary samples are obtained for most parameters, with additional collections made solely for phosphorus.
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 Alk Alk Alk
Measurement type: Ratio
Units:Alk<> Alk<> Alk<>
Measurement type: Nominal Ca Ca Ca
Measurement type: Ratio
Units:Ca<> Ca<> Ca<>
Measurement type: Nominal Chl-a Chl-a Chl-a
Measurement type: Ratio
Units:Chl-a<> Chl-a<> Chl-a<>
Measurement type: Nominal Cl Cl Cl
Measurement type: Ratio
Units:Cl<> Cl<> Cl<>
Measurement type: Nominal Cond Cond Cond
Measurement type: Ratio
Units:Date Date Date
Measurement type: DateTime
Date/Time Format: DD/MM/YYYYDepth Depth Depth
Measurement type: Interval
Units:DP DP DP
Measurement type: Ratio
Units:DP<> DP<> DP<>
Measurement type: Nominal DSi DSi DSi
Measurement type: Ratio
Units:DSi<> DSi<> DSi<>
Measurement type: Nominal Fe Fe Fe
Measurement type: Ratio
Units:Fe<> Fe<> Fe<>
Measurement type: Nominal K K K
Measurement type: Ratio
Units:K<> K<> K<>
Measurement type: Nominal Mg Mg Mg
Measurement type: Ratio
Units:Mg<> Mg<> Mg<>
Measurement type: Nominal Na Na Na
Measurement type: Ratio
Units:Na<> Na<> Na<>
Measurement type: Nominal pH pH pH
Measurement type: Interval
Units:Secchi Secchi Secchi
Measurement type: Ratio
Units:Station Station Station
Measurement type: Nominal Stratum Stratum Stratum
Measurement type: Nominal Temp Temp Temp
Measurement type: Interval
Units:Time Time Time
Measurement type: DateTime
Date/Time Format: otherTN TN TN
Measurement type: Ratio
Units:TN<> TN<> TN<>
Measurement type: Nominal TP TP TP
Measurement type: Ratio
Units:TP<> TP<> TP<>
Measurement type: Nominal TSS TSS TSS
Measurement type: Ratio
Units:TSS<> TSS<> TSS<>
Measurement type: Nominal Year Year Year
Measurement type: DateTime
Date/Time Format: YYYYSampling Equipment
Equipment and software used to collect data, including how that equipment was used.
Current Equipment
Coolers
Started: 1992-05-07(3) 60-quart coolers
Deionized water
Started: 1992-05-07Deionized water for rinsing
Deionized water
Started: 1992-05-07Deionized water for blanks (where applicable)
Frozen ice packs
Started: 1992-05-07Frozen ice packs
Hose
Started: 1992-05-07Hose for integrated sampling of chlorophyll-A
Kemmerrer bottle with messenger
Started: 1992-05-07Kemmerrer bottle with messenger
Lake data forms
Started: 1992-05-07Lake data forms
Millipore filters
Started: 1992-05-07Millipore filters (0.45 micrometers)
Sample compositing container
Started: 1992-05-07Sample compositing container
Sample filtration apparatus
Started: 1992-05-07Sample filtration apparatus
Sample kits
Started: 1992-05-07Sample kits (sample containers, labels)
Secchi disk
Started: 1992-05-07Secchi disk with sounding line weight
Van Dorn sampler with messenger
Started: 1992-05-07Van Dorn sampler with messenger
Site Characteristics
The spatial extent of the dataset site coverage, and descriptions of the spatial extent and context for the data collection
- Site Description
STA 19 Main Lake, near Burlington, VT (N 44 degrees 28.26' W 73degrees 17.95')
- Site Description
STA 21 Burlington Harbor, VT (N 44 degrees 28.49' W 73 degrees 13.90')