Leaf-level chlorophyll fluorescence and reflectance spectra of high latitude plants

Abstract Little is known about the chlorophyll fluorescence spectra for high latitude plants. A FluoWat leaf clip was used to measure leaf-level reflectance and of leaves common plants examine general spectral characteristics these species. Fluorescence yield (Fyield) calculated as ratio emitted divided by absorbed radiation wavelengths from 400 nm up wavelength cut-off low pass filter (either 650 or 700 nm). The Fyield grouped into distinctly different patterns among plant functional types. Black spruce ( Picea mariana ) had little red fluorescence, which reabsorbed in shoot, but displayed a distinct far-red peak. Quaking aspen Populus tremuloides both peaks, did sweet coltsfoot Petasites frigidus ). Cotton grass Eriophorum spp. peaks were much lower than coltsfoot. Sphagnum moss spp.) peak fluorescence. Reindeer lichen Cladonia rangiferina very levels, although when damp small These vegetation samples showed wide variations shapes. values individual poorly correlated content, however strong correlation with content. variability may provide information remote sensing type also confound attempts biophysical function using solar induced (SIF).