period

• Label: Incubation Period
• Definition: Codes indicate the deployment and collection time of hyphae bags used in the study.
• Type: Code list
• Codes:
  • 2009 = Deployed Oct 2009, collected May 2010
  • 2010 = Deployed May 2010, collected September 2010
  • 2011 = Deployed Sept 2010, collected Jul 2011
  • 2011.5 = Deployed Jul 2011, collected Oct 2011
• Missing values:
  • NA =

,
Treat

• Label: Treatment
• Definition: Treatment area: FASET (girdled) or REF (ungirdled)
• Type: Code list
• Codes:
  • FASET = Girdled
  • REF = Ungirdled
• Missing values: None specified

,
Plot

• Label: Plot
• Definition: Plot ID following AmeriFlux/FASET naming convention.
• Type: Nominal
• Missing values: None specified

,
Species

• Label: Tree Species
• Definition: A coded indicator of the tree species associated with the sample. Coding pattern combines the first two letters of the genus and species. For example, Acer Rubrum (red maple) is coded ACRU.
• Type: Code list
• Codes:
  • ACRU = Acer rubrum
  • ACSA = Acer saccharum
  • BEPA = Betula papyrifera
  • PIST = Pinus strobus
  • POGR = Populus grandidentata
  • POTR = Populus tremuloides
  • QURU = Quercus rubra
• Missing values: None specified

,
percent_N

• Label: Percent Nitrogen
• Definition: Weight percent nitrogen in the sample.
• Type: Physical quantity
• Unit: percent
• Maximum: Not specified
• Minimum: Not specified
• Precision: 0.001
• Missing values:
  • NA =

,
percent_N_corr

• Label: Percent Nitrogen Corrected
• Definition: Percent Nitrogen in the sample corrected for mineral contamination of hyphae bags. Percent Nitrogen Corrected is equal to 43 percent divided by Percent Carbon times Percent Nitrogen.
• Type: Nominal
• Missing values: None specified

,
d15N

• Label: Isotopic Signature of Nitrogen 15
• Definition: Deviation in ratio of 15N:14N of a sample from the 15N:15N ratio found in air.
• Type: Physical quantity
• Unit: perMille
• Maximum: Not specified
• Minimum: Not specified
• Precision: Not specified
• Missing values:
  • NA =

,
percent_C

• Label: Percent Carbon
• Definition: Weight percent carbon in the sample.
• Type: Physical quantity
• Unit: percent
• Maximum: Not specified
• Minimum: Not specified
• Precision: 0.01
• Missing values:
  • NA =

,
d13C

• Label: Isotopic Signature of Carbon 13
• Definition: Deviation in ratio of 13C:12C of a sample from the 13C:12C ratio found in the Pee Dee Belemnite (PDB) limestone standard.
• Type: Physical quantity
• Unit: perMille
• Maximum: Not specified
• Minimum: Not specified
• Precision: 0.01
• Missing values:
  • NA =

,
hyphae_biomass

• Label: Hyphae Biomass
• Definition: The estimated amount of hyphae biomass for the associated sample.
• Type: Physical quantity
• Unit: kilogramsPerHectar
• Maximum: Not specified
• Minimum: Not specified
• Precision: 1
• Missing values:
  • NA =