Forest Ecosystem Monitoring Cooperative(802) 656-0683femc@uvm.eduwww.uvm.edu/femc705 Spear StreetSouth BurlingtonVermont05403United States of AmericaThe Ecological Significance of Sun/Shade Plasticity in Balsam Fir, Red Spruce, and Paper Birch along Elevational Gradients in the Northeastern United StatesTo better understand the relationship between plants and their abiotic environment, by using the response of three different tree species growing at different elevations, to light.The Ecological Significance of Sun/Shade Plasticity in Balsam Fir, Red Spruce, and Paper Birch along Elevational Gradients in the Northeastern United StatesRichardsonAndrewelevationlightred sprucebalsam firwhite birchNeedle Physiology2000-06-012002-09-30Measurements of mass, area, length and physiological characteristicsTo better understand the relationship between plants and their abiotic environment, by using the response of three different tree species growing at different elevations, to light.Z0128_NeedlePhysVMC.128.173mySQLAndrew Richardson. 2002. Needle Physiology. FEMC. Can be found at: https://www.uvm.edu/femc/data/archive/project/the-ecological-significance-sunshade-plasticity-balsam/dataset/needle-physiology/overviewhttps://vmc.w3.uvm.edu/vmcdevel/CI4/data/archive/project/the-ecological-significance-sunshade-plasticity-balsam/dataset/needle-physiologyObservationObservationObservation ID NumberintSpeciesSpeciesSpecies (spruce or fir)textelevElevationElevation level (low, mid and high)textCrownpositionCrown PositionCrown position (sun or shade)textTreeTree IDTree ID textTransectTransectTransect IDintMountainMountainName of mountain where study site is locatedtextSampleCodeSample CodeCode unique to sampletextNeedlemassNeedle MassMass of needledecimalmilligram0.0001realNeedleareaNeedle AreaArea of needledecimalsquareCentimeters0.001realNeedlelengthNeedle LengthLength of needledecimalcentimeter0.01realFv_mChlorophyll FluorescenceChlorophyll fluorescencedecimalmeter0.001realPRIPhotochemical Reflectance IndexPhotochemical reflectance index; a measure of photosynthetic radiation use efficiencydecimalRed_edgeRed Edge PositionChlorophyll measuredecimalChINDIChI NDIChlorophyll-based difference indexdecimalAsatAsatunknowndecimalunknown0.01realCommentsCommentsCommentstext