• 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

The primary objectives of this project were to conduct measurements of surface-atmosphere exchanges of gaseous elemental mercury (GEM) over a New England forest and evaluate possible pathways for assimilation of atmospheric mercury into the biota of terrestrial ecosystems of the region. This was done in the context of an ongoing project focusing on year-round monitoring of mercury wet-deposition in the Lake Champlain Basin and establishing measurements of speciated (GEM, RGM, HGP) ambient atmospheric mercury.

• dataset_eml_attributelistlabel: baseln

• dataset_eml_attributelistdescription: baseln

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: blnstd

• dataset_eml_attributelistdescription: blnstd

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Cartridge

• dataset_eml_attributelistdescription: Cartridge

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Date

• dataset_eml_attributelistdescription: Date

• dataset_eml_attributeliststoragetype: date

• dataset_eml_attributelistmeasurementtype: datetime
• dataset_eml_attributelistformatstring: YYYY-MM-DD

• dataset_eml_attributelistlabel: event

• dataset_eml_attributelistdescription: event

• dataset_eml_attributeliststoragetype: int

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: HgConc

• dataset_eml_attributelistdescription: Mercury concentration

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• Unit: ng/m3 (Nanogram per cubic meter of air)

• dataset_eml_attributelistlabel: PeakArea

• dataset_eml_attributelistdescription: PeakArea

• dataset_eml_attributeliststoragetype: int

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: PeakMax

• dataset_eml_attributelistdescription: PeakMax

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: SmpDuration

• dataset_eml_attributelistdescription: SmpDuration

• dataset_eml_attributeliststoragetype: int

• dataset_eml_attributelistmeasurementtype: interval

• dataset_eml_attributelistlabel: SmpVolume

• dataset_eml_attributelistdescription: SmpVolume

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio

• dataset_eml_attributelistlabel: Status

• dataset_eml_attributelistdescription: Status

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Time

• dataset_eml_attributelistdescription: Time

• dataset_eml_attributeliststoragetype: time

• dataset_eml_attributelistmeasurementtype: datetime
• dataset_eml_attributelistformatstring: hh:mm:ss

• dataset_eml_attributelistlabel: TIMESTAMP

• dataset_eml_attributelistdescription: TIMESTAMP

• dataset_eml_attributeliststoragetype: datetime

• dataset_eml_attributelistmeasurementtype: datetime
• dataset_eml_attributelistformatstring: YYYY-MM-DD hh:mm:ss

• dataset_eml_attributelistlabel: Type

• dataset_eml_attributelistdescription: Type

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• Micrometeorological measurements of atmospher
  • dataset_eml_methoddescription: Direct, micrometeorological measurements of atmosphere-canopy exchanges of GEM were made using the modified Bowen-ratio method. This method involves measuring the concentration gradient of either temperature or water vapor and the turbulent flux of sensible or latent heat over the same height interval

• Sample composition
  • dataset_eml_methoddescription: To reflect a range of trophic levels, we sampled leaf litter, foliage, folivorous and carnivorous arthropods, a terrestrial salamander, an insectivorous passerine bird, and two carnivorous raptors. Salamanders and birds were sampled across a study area of c. 25 ha between 1075-1180 m elevation, while we collected leaf litter, foliage and arthropod samples at two sites 50 m apart at 1100 m elevation.

• Quality control
  • dataset_eml_methoddescription: Care was taken to ensure that samples were not contaminated, especially those that required manual handling (e.g., litter and foliage). We generally used latex gloves during sampling, and we cleaned sampling utensils with distilled water and/or 5% nitric acid. All samples were frozen within 2 hours of collection