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Foliar Nitrogen Variability and Resorption During Autumn Leaf Senescence in Sugar Maple: Nitrogen Content of Sugar Maple Leaf Litter

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dataset_eml_metadataproviderheader

  • Forest Ecosystem Monitoring Cooperative

    • 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

dataset_eml_abstractheader

    Measure foliar nitrogen of sugar maple to determine relationships between leaf nitrogen content and resorption efficiency during autumn leaf senescence. To examine the variability in resorption efficiency among and within sugar maple trees. To establish a baseline for long-term nutrient cycling research. To examine the variability in resorption efficiency and foliar N content among and within sugar maple trees. To determine the relationship between resorption efficiency and foliar N content.

dataset_eml_peopleheader

  • Tim Scherbatskoy: dataset_eml_peoplecontentprovider

  • Eveline Leon: dataset_eml_peopleprincipleinvestigator

dataset_eml_projectkeywordheader

  • foliar nitrogen, leaf litter, sugar maple,

dataset_eml_locationheader

  • dataset_eml_locationcords

dataset_eml_datatableheader

  • dataset_eml_datatabletitle: Nitrogen Content of Sugar Maple Leaf Litter
  • dataset_eml_datatablestartdate: 1993-09-27
  • dataset_eml_datatableendate: 1993-10-18
  • dataset_eml_datatabledescription: Measurement of leaf litter weight and amount of nitrogen in 20 sample trees on certain days

  • dataset_eml_datatablepurpose: To determine relationships between leaf nitrogen content and resorption efficiency during autumn leaf senescence, examine the variability in resorption efficiency among and within sugar maple trees, and establish a baseline for long-term nutrient cycling research examine the variability in resorptio

  • dateset_eml_datatableshortname: Z0015_SMLL_Litter

  • dataset_eml_datatablephysicalobjectname: VMC.15.16

  • dataset_eml_datatabledatatype: mySQL
  • dataset_eml_datatablecitation: Eveline Leon.1993. Nitrogen Content of Sugar Maple Leaf Litter. University of Vermont. FEMC. Can be found at: https://www.uvm.edu/femc/data/archive/project/foliar-nitrogen-variability-resorption-during-autumn/dataset/nitrogen-content-sugar-maple-leaf-litter

  • dataset_eml_datatableonlinedistribution: https://vmc.w3.uvm.edu/vmcdevel/CI4/data/archive/project/foliar-nitrogen-variability-resorption-during-autumn/dataset/nitrogen-content-sugar-maple-leaf-litter

dataset_eml_attributelistheader

    dataset_eml_attributelistname: ID
    • dataset_eml_attributelistlabel: ID Number
    • dataset_eml_attributelistdescription: ID number of sample
    • dataset_eml_attributeliststoragetype: int
    • dataset_eml_attributelistmeasurementtype: ordinal
    dataset_eml_attributelistname: TreeNumber
    • dataset_eml_attributelistlabel: Tree #
    • dataset_eml_attributelistdescription: Number of tree sampled
    • dataset_eml_attributeliststoragetype: int
    • dataset_eml_attributelistmeasurementtype: ordinal
    dataset_eml_attributelistname: dates
    • dataset_eml_attributelistlabel: Sample Date
    • dataset_eml_attributelistdescription: Date sample was collected
    • dataset_eml_attributeliststoragetype: datetime
    • dataset_eml_attributelistmeasurementtype: datetime
    • dataset_eml_attributelistformatstring: YYYY-MM-DD
    dataset_eml_attributelistname: weeknumber
    • dataset_eml_attributelistlabel: Week Number
    • dataset_eml_attributelistdescription: Number of the week in relation to the start of the research the sample was collected
    • dataset_eml_attributeliststoragetype: int
    • dataset_eml_attributelistmeasurementtype: ordinal
    dataset_eml_attributelistname: AreaCM2
    • dataset_eml_attributelistlabel: Area
    • dataset_eml_attributelistdescription: Area of leaf surface area
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: squareCentimeters
    • dataset_eml_attributelistprecision: 0.01
    • Unit: squareCentimeters
    • dataset_eml_attributelistnumbertype: real
    dataset_eml_attributelistname: drywt_g
    • dataset_eml_attributelistlabel: Dry Weight
    • dataset_eml_attributelistdescription: Weight of leaves or leaf litter oven dried at 70 degrees celsius
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: gram
    • dataset_eml_attributelistprecision: 0.01
    • Unit: gram
    • dataset_eml_attributelistnumbertype: real
    dataset_eml_attributelistname: CHN_analysisWT_ug
    • dataset_eml_attributelistlabel: CHN Weight
    • dataset_eml_attributelistdescription: Weight determined by CHN elemental analyzer (weight of leaf or leaf litter sample)
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: microgram
    • dataset_eml_attributelistprecision: 10
    • Unit: microgram
    • dataset_eml_attributelistnumbertype: real
    dataset_eml_attributelistname: Percentage_N
    • dataset_eml_attributelistlabel: Percent Nitrogen
    • dataset_eml_attributelistdescription: Percent of nitrogen in leaf litter
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: percent
    • dataset_eml_attributelistprecision: 0.01
    • Unit: percent
    • dataset_eml_attributelistnumbertype: real
      • dataset_eml_attributelistbounds:
      • dataset_eml_attributelistboundsminimum: 0
      • dataset_eml_attributelistboumdsmaximum: 100
    dataset_eml_attributelistname: QC_adjust
    • dataset_eml_attributelistlabel: QC Adjust
    • dataset_eml_attributelistdescription: Quality control adjustment
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: number
    • dataset_eml_attributelistprecision: 0.0001
    • Unit: number
    • dataset_eml_attributelistnumbertype: real
    dataset_eml_attributelistname: ug_N_cm2
    • dataset_eml_attributelistlabel: ug N/cm2
    • dataset_eml_attributelistdescription: Micrograms of nitrogen per centimeter squared: the amount of nitrogen found in a given area
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: customMicrogramsPerSquareCentimeter
    • dataset_eml_attributelistprecision: 0.00000001
    • Unit: MicrogramsPerSquareCentimeter
    • dataset_eml_attributelistnumbertype: real
    dataset_eml_attributelistname: NitrogenforTreeNumb
    • dataset_eml_attributelistlabel: Nitrogen for Tree #
    • dataset_eml_attributelistdescription: Number of tree used for sample collection
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: number
    • dataset_eml_attributelistprecision: 1
    • Unit: number
    • dataset_eml_attributelistnumbertype: integer
    dataset_eml_attributelistname: 27Sept
    • dataset_eml_attributelistlabel: September_27
    • dataset_eml_attributelistdescription: Amount of Nitrogen in trees on September 27
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: customMicrogramsPerSquareCentimeter
    • dataset_eml_attributelistprecision: 0.00000001
    • Unit: MicrogramsPerSquareCentimeter
    • dataset_eml_attributelistnumbertype: real
    dataset_eml_attributelistname: 30Sept
    • dataset_eml_attributelistlabel: September_30
    • dataset_eml_attributelistdescription: Amount of Nitrogen in trees on September 30
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: customMicrogramsPerSquareCentimeter
    • dataset_eml_attributelistprecision: 0.00000001
    • Unit: MicrogramsPerSquareCentimeter
    • dataset_eml_attributelistnumbertype: real
    dataset_eml_attributelistname: 5Octob
    • dataset_eml_attributelistlabel: October_5
    • dataset_eml_attributelistdescription: Amount of Nitrogen in trees on October 5
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: customMicrogramsPerSquareCentimeter
    • dataset_eml_attributelistprecision: 0.00000001
    • Unit: MicrogramsPerSquareCentimeter
    • dataset_eml_attributelistnumbertype: real
    dataset_eml_attributelistname: 8Octob
    • dataset_eml_attributelistlabel: October_8
    • dataset_eml_attributelistdescription: Amount of Nitrogen in trees on October 8
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: customMicrogramsPerSquareCentimeter
    • dataset_eml_attributelistprecision: 0.00000001
    • Unit: MicrogramsPerSquareCentimeter
    • dataset_eml_attributelistnumbertype: real
    dataset_eml_attributelistname: 11Octob
    • dataset_eml_attributelistlabel: October_11
    • dataset_eml_attributelistdescription: Amount of Nitrogen in trees on October 11
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: customMicrogramsPerSquareCentimeter
    • dataset_eml_attributelistprecision: 0.00000001
    • Unit: MicrogramsPerSquareCentimeter
    • dataset_eml_attributelistnumbertype: real
    dataset_eml_attributelistname: 13Octob
    • dataset_eml_attributelistlabel: October_13
    • dataset_eml_attributelistdescription: Amount of Nitrogen in trees on October 13
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: customMicrogramsPerSquareCentimeter
    • dataset_eml_attributelistprecision: 0.00000001
    • Unit: MicrogramsPerSquareCentimeter
    • dataset_eml_attributelistnumbertype: real
    dataset_eml_attributelistname: 18Octob
    • dataset_eml_attributelistlabel: October_18
    • dataset_eml_attributelistdescription: Amount of Nitrogen in trees on October 18
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: customMicrogramsPerSquareCentimeter
    • dataset_eml_attributelistprecision: 0.00000001
    • Unit: MicrogramsPerSquareCentimeter
    • dataset_eml_attributelistnumbertype: real
    dataset_eml_attributelistname: Mean_N
    • dataset_eml_attributelistlabel: Mean Nitrogen
    • dataset_eml_attributelistdescription: Mean amount of Nitrogen in tree (average of each day sampled for each tree)
    • dataset_eml_attributeliststoragetype: decimal
    • dataset_eml_attributelistmeasurementtype: ratio
    • dataset_eml_attributeliststandardunit: customMicrogramsPerSquareCentimeter
    • dataset_eml_attributelistprecision: 0.00000001
    • Unit: MicrogramsPerSquareCentimeter
    • dataset_eml_attributelistnumbertype: real

dataset_eml_methodsheader

  • dataset_eml_currentMethodsHeader
    • Study specimens
      • dataset_eml_methodsStartDate: 1993-05-01
      • dataset_eml_methoddescription: Twenty sugar maple trees used for foliage sampling.

    • Plot description
      • dataset_eml_methoddescription: One 75 X 50 m plot used for soil, litter, throughfall and precipitation collections.

    • Leaf samples
      • dataset_eml_methoddescription: Leaf samples collected from north and south sides of tree; from lower, middle and upper canopy. Samples of leaves were collected once in mid-July and once in mid-August to obtain a measure of the maximum nitrogen pool. Foliar nutrient concentrations are most stable in this time frame.

    • Leaf litter
      • dataset_eml_methodsStartDate: 1993-09-20
      • dataset_eml_methoddescription: Leaf litter traps collected twice weekly. One litter trap was placed under each tree, positioned so that minimal litter would fall in from surrounding trees. Leaf litter was collected throughout the leaf drop period (September 20-October 22).

    • Throughfall collection
      • dataset_eml_methoddescription: Throughfall collections consisted of two funnel collectors under each of five trees, on north and south sides of tree. Plus two collectors in an open area in close proximity to the site to collect rain as a control.

    • Leaf tissue analysis
      • dataset_eml_methoddescription: After each sampling, leaf tissue was run through a leaf area meter, assigned a thrips damage index number, oven dried at 70 degrees C to a constant weight and ground in a Wiley mill.


dataset_eml_samplingheader

  • dataset_eml_samplingCurrentEqupment
    • Chromatograph
      • dataset_eml_samplingdescription: Dionex Ion Chromatograph Model 2010i was used to analyze nitrate.

    • Flow injection analysis
      • dataset_eml_samplingdescription: Lachat Quick Chem AE flow injection analysis was used to test ammonium colorimetrically.

    • Elemental Analyzer
      • dataset_eml_methodsStartDate: 1993-05-01
      • dataset_eml_samplingdescription: Leeman Laboratories CHN CE440 Elemental Analyzer was used to determine total nitrogen.

    • Leaf litter traps, funnel precipitation colle
      • dataset_eml_methodsStartDate: 1993-05-01
      • dataset_eml_samplingdescription: Leaf litter traps. Funnel precipitation collectors.

    • Pole pruners, ladders and rope climbing equip
      • dataset_eml_methodsStartDate: 1993-05-01
      • dataset_eml_samplingdescription: Pole pruners, ladders and rope climbing equipment.

dataset_eml_sitecharacteristicsheader

  • dataset_eml_sitecharacteristicsdescription: Stevensville Brook watershed, west slope of Mt. Mansfield, northern hardwood forest.



  • dataset_eml_sitecharacteristicsdescription: The site is in the drainage of Nettle Brook, a small tributary to the north branch of Stevensville Brook.