• 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

Assessment of changes in forest canopy health over time by the use of canopy photography. Establish an archivable image of stand condition to use as a baseline for future comparisons. Since a baseline has been created in past years, photography will be taken only if other surveys indicate tree stress or damage is occuring, and results will be compared to baseline established.

• dataset_eml_attributelistlabel: Canopy Cover

• dataset_eml_attributelistdescription: Canopy cover (percent of sky not obscured by vegetation) measured from hemispherical fixed plot image

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.00001
• dataset_eml_attributelistnumbertype: rational
• dataset_eml_attributelistbounds:
• dataset_eml_attributelistboundsminimum: 0
• dataset_eml_attributelistboumdsmaximum: 1

• dataset_eml_attributelistlabel: Date

• dataset_eml_attributelistdescription: Date

• dataset_eml_attributeliststoragetype: date

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

• dataset_eml_attributelistlabel: Plot

• dataset_eml_attributelistdescription: Plot

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Plot mean

• dataset_eml_attributelistdescription: Mean of canopy cover for each plot

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributelistprecision: 0.00001
• dataset_eml_attributelistnumbertype: rational
• dataset_eml_attributelistbounds:
• dataset_eml_attributelistboundsminimum: 0
• dataset_eml_attributelistboumdsmaximum: 1

• dataset_eml_attributelistlabel: Site

• dataset_eml_attributelistdescription: Location of photo plot

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Swath kit

• dataset_eml_attributelistdescription: Computer generated canopy measurement

• dataset_eml_attributeliststoragetype: decimal

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

• Canopy photography
  • dataset_eml_methodsStartDate: 1991-06-26
    
  • dataset_eml_methoddescription: A canopy photography technique for monitoring stand condition was developed to allow comparisons with forest health survey plots.

• Photo points
  • dataset_eml_methodsStartDate: 1993-07-01
    
  • dataset_eml_methoddescription: 24-25 permanent photo points per forest health plot (North American Maple Project plot and 2 Forest Health Monitoring plots at 1400 and 2200 ft).

• Camera set up
  • dataset_eml_methodsStartDate: 1991-06-26
    
  • dataset_eml_methoddescription: True color slides using wide angle lens on 35mm camera mounted vertically from a tripod at a height of 1 m from the ground.

• Time frame
  • dataset_eml_methodsStartDate: 1993-07-01
    
  • dataset_eml_methoddescription: Slides are taken in late July to early August.

• Image analysis
  • dataset_eml_methodsStartDate: 1991-06-26
    
  • dataset_eml_methoddescription: Image analysis is done with either a computerized image analysis (Swath Kit) or through manual projections.

• Percent canopy
  • dataset_eml_methodsStartDate: 1991-06-26
    
  • dataset_eml_methoddescription: Percent canopy cover is measured.

• Camera,
• dataset_eml_samplingdescription: 35 mm camera with a 17 mm wide angle lens; Ektachrome slides (ISO200); tripod. plumb bob; bubble level