Forest Ecosystem Monitoring Cooperative(802) 656-0683femc@uvm.eduwww.uvm.edu/femc705 Spear StreetSouth BurlingtonVermont05403United States of AmericaFoliar Nitrogen Variability and Resorption During Autumn Leaf Senescence in Sugar MapleMeasure 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.Foliar Nitrogen Variability and Resorption During Autumn Leaf Senescence in Sugar MapleScherbatskoyTimLeonEvelineplant physiologyfoliar nitrogennutrient cyclingsugar maplePrecipitation Throughfall Chemistry1993-09-091993-10-12Measurement of precipitation pH and concentrations of magnesium, calcium, nitrate, potassium, sodium and sulfateTo 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 resorptioZ0015_SMLL_PrecipVMC.15.17mySQLEveline Leon. 1993. Precipitation Throughfall Chemistry. University of Vermont. FEMC. Can be found at: https://www.uvm.edu/femc/data/archive/project/foliar-nitrogen-variability-resorption-during-autumn/dataset/precipitation-throughfall-chemistryhttps://www.uvm.edu/femc/CI4/data/archive/project/foliar-nitrogen-variability-resorption-during-autumn/dataset/precipitation-throughfall-chemistryIDSample IDSample IDintSamplePrecipitation SamplePrecipitation sample type (rain or throughfall)textdatesPrecipitation Sample DateDate when precipation sample was collecteddatetimeYYYY-MM-DDpHpHpH of the precipitation sampleintnumber0.01real014NO3_NNO3-NThe portion of the nitrate in the precipitation sample that is nitrogendecimalmilligramsPerLiter0.01realNH4_NNH4-NThe portion of the NH4-N in the precipitation sample that is nitrogendecimalmilligramsPerLiter0.01realCa2plusCa2+Calcium concentration in precipitation sampledecimalmilligramsPerLiter0.01realMg2plusMg2+Magnesium concentration in precipitation sampledecimalmilligramsPerLiter0.01realKplusK+Potassium concentration in precipitation sampledecimalmilligramsPerLiter0.01realNaplusNa+Sodium concentration in precipitation sampledecimalmilligramsPerLiter0.1realS04_SO4Sulfate concentration in precipitation sampledecimalmilligramsPerLiter0.01real