public read Forest Ecosystem Monitoring Cooperative

705 Spear StreetSouth BurlingtonVermont05403United States of America

(802) 656-0683femc@uvm.eduwww.uvm.edu/femcMeasurement of precipitation pH and concentrations of magnesium, calcium, nitrate, potassium, sodium and sulfateForest Ecosystem Monitoring CooperativeTimScherbatskoycontentProviderEvelineLeonprincipalInvestigatorMeasure 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.Precipitation Throughfall ChemistryMeasurement of precipitation pH and concentrations of magnesium, calcium, nitrate, potassium, sodium and sulfateVMC.15.17mySQL/femc/data/archive/project/foliar-nitrogen-variability-resorption-during-autumn/dataset/precipitation-throughfall-chemistry1993-09-091993-10-12IDSample IDSample IDintSamplePrecipitation SamplePrecipitation sample type (rain or throughfall)textdatesPrecipitation Sample DateDate when precipation sample was collecteddatetimeYYYY-MM-DDpHpHpH of the precipitation sampleintNO3_NNO3-NThe portion of the nitrate in the precipitation sample that is nitrogendecimalmeterrealNH4_NNH4-NThe portion of the NH4-N in the precipitation sample that is nitrogendecimalmeterrealCa2plusCa2+Calcium concentration in precipitation sampledecimalmeterrealMg2plusMg2+Magnesium concentration in precipitation sampledecimalmeterrealKplusK+Potassium concentration in precipitation sampledecimalmeterrealNaplusNa+Sodium concentration in precipitation sampledecimalmeterrealS04_SO4Sulfate concentration in precipitation sampledecimalmeterreal