2018 Talladega National Forest: Leaf level Reflectance Spectra and Trait Predictions ------------------------------------------------------ Reference ------------------------------------------------------ Manuscript is currently in review using these data, we will update with a reference upon publication. ------------------------------------------------------ Collection Information ------------------------------------------------------ Fresh leaf-level spectral data collected in the summer of 2018. Measurements were taken from trees located in the Talladega National Forest (TALL) NEON field site. A total of 11 tree species were measured across this field site. Trees were chosen opportunistically in the field and samples were taken from throughout the canopy (e.g. top of canopy sunlit and within canopy shaded). Three reflectance measurements were taken per sample and the mean value is reported. Spectral data was processed in R. Both %N and LMA (g/m2) were laboratory calculated. ------------------------------------------------------ Date ------------------------------------------------------ Date that sample was collected in the field. yyyy.mm.dd ------------------------------------------------------ Species Codes ------------------------------------------------------ Pinus palustris: longleaf pine Carya tomentosa: mockernut hickory Liriodendron tulipifera: tulip tree Liquidambar styraciflua: sweetgum Quercus alba: white oak Pinus taeda: loblolly pine Quercus falcate: Southern red oak Carya glabra: pignut hickory Quercus montana: chestnut oak Quercus marilandica: blackjack oak ------------------------------------------------------ Latitude and Longitude ------------------------------------------------------ Coordinates are reported in WGS84 UTM Zone 16N. ------------------------------------------------------ Canopy Position ------------------------------------------------------ B = Bottom 1/3 of canopy (shaded) M = Middle 1/3 of canopy (shaded) T = top of canopy (sunlit) ------------------------------------------------------ Sample Height ------------------------------------------------------ Height above ground that the sample was collected. Reported in meters. ------------------------------------------------------ Exposition ------------------------------------------------------ Environment that sample was collected in. ------------------------------------------------------ Plant Growth Form ------------------------------------------------------ Plant growth form of sample. ------------------------------------------------------ DBH ------------------------------------------------------ Field measured DBH. Reported in cm. ------------------------------------------------------ LMA ------------------------------------------------------ Laboratory measured leaf mass per area (g/m2). ------------------------------------------------------ N ------------------------------------------------------ Laboratory measured foliar nitrogen (%). A subsample of the complete dataset was processed for %N in the laboratory, this is why there are NA values for some of the samples. We produced PLSR predicted %N values for the samples that were not processed in the laboratory. These can be made available upon request. ------------------------------------------------------ nm338.9 - nm2509.4 ------------------------------------------------------ Laboratory measured fresh leaf reflectance. Wavelengths are reported as nm. Values are reported as %.