• 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

To better understand the relationship between plants and their abiotic environment, by using the response of three different tree species growing at different elevations, to light.

• dataset_eml_attributelistlabel: Observation

• dataset_eml_attributelistdescription: Observation ID Number

• dataset_eml_attributeliststoragetype: int

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Species

• dataset_eml_attributelistdescription: Species (spruce or fir)

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Elevation

• dataset_eml_attributelistdescription: Elevation level (low, mid and high)

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Crown Position

• dataset_eml_attributelistdescription: Crown position (sun or shade)

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Tree ID

• dataset_eml_attributelistdescription: Tree ID

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Transect

• dataset_eml_attributelistdescription: Transect ID

• dataset_eml_attributeliststoragetype: int

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Mountain

• dataset_eml_attributelistdescription: Name of mountain where study site is located

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Sample Code

• dataset_eml_attributelistdescription: Code unique to sample

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• dataset_eml_attributelistlabel: Needle Mass

• dataset_eml_attributelistdescription: Mass of needle

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributeliststandardunit: milligram
• dataset_eml_attributelistprecision: 0.0001
• Unit: milligram
• dataset_eml_attributelistnumbertype: real

• dataset_eml_attributelistlabel: Needle Area

• dataset_eml_attributelistdescription: Area of needle

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributeliststandardunit: squareCentimeters
• dataset_eml_attributelistprecision: 0.001
• Unit: squareCentimeters
• dataset_eml_attributelistnumbertype: real

• dataset_eml_attributelistlabel: Needle Length

• dataset_eml_attributelistdescription: Length of needle

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributeliststandardunit: centimeter
• dataset_eml_attributelistprecision: 0.01
• Unit: centimeter
• dataset_eml_attributelistnumbertype: real

• dataset_eml_attributelistlabel: Chlorophyll Fluorescence

• dataset_eml_attributelistdescription: Chlorophyll fluorescence

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributeliststandardunit: meter
• dataset_eml_attributelistprecision: 0.001
• Unit: meter
• dataset_eml_attributelistnumbertype: real

• dataset_eml_attributelistlabel: Photochemical Reflectance Index

• dataset_eml_attributelistdescription: Photochemical reflectance index; a measure of photosynthetic radiation use efficiency

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ordinal

• dataset_eml_attributelistlabel: Red Edge Position

• dataset_eml_attributelistdescription: Chlorophyll measure

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ordinal

• dataset_eml_attributelistlabel: ChI NDI

• dataset_eml_attributelistdescription: Chlorophyll-based difference index

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ordinal

• dataset_eml_attributelistlabel: Asat

• dataset_eml_attributelistdescription: unknown

• dataset_eml_attributeliststoragetype: decimal

• dataset_eml_attributelistmeasurementtype: ratio
• dataset_eml_attributeliststandardunit: unknown
• dataset_eml_attributelistprecision: 0.01
• dataset_eml_attributelistnumbertype: real

• dataset_eml_attributelistlabel: Comments

• dataset_eml_attributelistdescription: Comments

• dataset_eml_attributeliststoragetype: text

• dataset_eml_attributelistmeasurementtype: nominal

• Experimental design
  • dataset_eml_methodsStartDate: 0001-01-01
    
  • dataset_eml_methoddescription: A split-split plot experimental design was used on the plots, split by species (balsam vs fir) first and then samples were split by crown position (sun vs shade). After sample processing, three needles from each sample were used for anatomical measurements.
  dataset_eml_methodsInstrumentation: R:FR meter (Skye instruments); dataset_eml_methodsSoftware: Leica Q500MC and QWin V1.00 (Leica Cambridge Ltd.)

• Photosynthetic rates
  • dataset_eml_methoddescription: Photosynthesis measurements were made on detached shoots with their ends immersed in vials of water. Projected needle area and dry mass were measured and then used to convert the measured photosynthetic rates to projected needle area. Chl NDI and PRI indices were used to obtain physiological insights from the chlorophyll fluorescence and spectral reflectance of dark-adapted foliage.
  dataset_eml_methodsInstrumentation: OS-500 Modulated Fluorometer UniSpec Spectral Analysis System

• Foliar C-13 analysis
  • dataset_eml_methoddescription: Using a pool of three samples from each site x crown position x species combination, an analysis of foliar C-13 was conducted by a commercial laboratory.
  dataset_eml_methodsInstrumentation: Europa Scientific ANCA-GSL elemental analyzerdataset_eml_methodsQAQC: Two replicated of every fifth sample were analyzed sequentially. All samples were run against a flour standard and results are expressed in relation to the PDB standard.