public read Forest Ecosystem Monitoring Cooperative

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(802) 656-0683femc@uvm.eduwww.uvm.edu/femcMeasurement of sugar maple canopy stages at Maple Research CenterForest Ecosystem Monitoring CooperativeJoshuaHalmanprincipalInvestigatorMichaelJohnsoncontentProviderTomSimmonscontentProviderSandraWilmotprincipalInvestigatorSeanLawsoncontentProviderDanDillnercontentProviderDetermine the relationship between the timing of bud development at different levels in the canopy (upper, lower and regeneration).Establish a baseline for the timing and duration of bud development on hardwood trees. Annual measurements of tree phenology to establish the timing of developmental events and trends, especially as they relate to changes in weather or insect and disease occurrence.First Occurrence Day of Year For Sugar Maple for 1991-2009Measurement of sugar maple canopy stages at Maple Research CenterVMC.13.252mySQL/femc/data/archive/project/tree-phenology-monitoring-bud-development/dataset/first-occurrence-day-year-for-sugar1991-04-012009-05-30YearYearYear that data was collecteddatetimeSpecies (Spp)Species nameLatin (scientific) name of the speciestextSiteElevationElevation of sampling siteintmeterrealDateSample DateDate when sample was collecteddatetimeYYYY-MM-DDDay of Year (DOY)Day of YearDay of the yeardatetimeUpper Canopy DevelopUpper Canopy DevelopmentUpper Canopy Development average of 5 treesdecimal0bud dormancy1initial bud swell, initial lengthening2bud elongation, buds grow fatter and more green3buds in green stage, scales separating4bud break, leaf tips exposed5extended bud break6initial leaf emergence 7initial leaf expansion, leaves unfolding, wrinkled8full leaf expansion, flattended surface without wrinkles, may not be full sizeLower Canopy DevelopLower Canopy DevelopmentLower Canopy Developmental Stage average of 5 treesdecimal0bud dormancy1initial bud swell, initial lengthening2bud elongation, buds grow fatter and more green3buds in green stage, scales separating4bud break, leaf tips exposed5extended bud break6initial leaf emergence 7initial leaf expansion, leaves unfolding, wrinkled8full leaf expansion, flattended surface without wrinkles, may not be full sizeRegeneration DevelopRegeneration Development AverageRegeneration Developmental Stage average of 5 saplingsdecimal1initial bud swell, initial lengthening2bud elongation, buds grow fatter and more green3buds in green stage, scales separating4bud break, leaf tips exposed5extended bud break6initial leaf emergence 7initial leaf expansion, leaves unfolding, wrinkled8full leaf expansion, flattended surface without wrinkles, may not be full sizeAverage DevelopmentaAverage Developmental StageAverage Developmental Stage of all levels and treesdecimal