Thomas L. Noland

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Radiative transfer theory and modeling assumptions were applied at laboratory and field scales in order to study the link between leaf reflectance and transmittance and canopy hyperspectral data for chlorophyll content estimation. This study was focused on 12 sites of Acer saccharum M. (sugar maple) in the Algoma Region, Canada, where field measurements,(More)
Relationships found between Compact Airborne Specfluorescence: the curvature index R6832/(R675·R691) and trographic Imager (CASI) hyperspectral canopy reflecthe R685/R655 ratio calculated from the canopy reflectance measurements at laboratory and field levels with tance are related to leaf-measured Ft, Fm9 and DF/Fm9 PAM-2000 chlorophyll fluorescence data(More)
Physical principles applied to remote sensing data are key to successfully quantifying vegetation physiological condition from the study of the light interaction with the canopy under observation. We used the fluorescence-reflectance-transmittance (FRT) and PROSPECT leaf models to simulate reflectance as a function of leaf biochemical and fluorescence(More)
This paper reports on progress made to link physiologicallybased indicators to optical indices from hyperspectral remote sensing. This study is carried out on twelve sites of Acer saccharum M. in the Algoma Region, Ontario (Canada), where field measurements and hyperspectral CASI imagery have been collected in 1997 and 1998 deployments. Individual tree(More)
A method for quantitative determination of the level of somatic embryogenesis in Norway spruce embryogenic callus is described. Embryogenic callus was dispersed in liquid by agitation and plated in a thin layer of medium containing 0.6% low melting point agarose. The number of embedded somatic embryos per mg of callus ranged from 0.2 to 1.5 among 11(More)
Quantitative data are presented on the efficiency of three stages of plant regeneration from somatic embryos of Norway spruce (Picea abies L.): 1) Maturation, the development of immature embryos to the cotyledonary stage; 2) Germination, primary root growth; and 3) Conversion, plantlet survival and continued growth in nonaxenic conditions. Maturation(More)
Half-sib seed of several eastern white pine (Pinus strobus L.) families was used to examine seed mass effects on laboratory germination, and seedling emergence and growth under moderate and low light (47 and 13% full sunlight) in a greenhouse. Percent germination and speed of germination under laboratory conditions were not related to seed mass among(More)
Number of new roots (root growth potential or RGP), new root length, photosynthesis, total nonstructural carbohydrate content of needles and roots, terminal bud condition, and shoot elongation were measured on jack pine container seedlings for 4 weeks at weekly intervals under greenhouse conditions of 100%, 20%, and 10% sunlight to simulate(More)
Information on foliar macronutrients is required in order to understand plant physiological and ecosystem processes such as photosynthesis, nutrient cycling, respiration and cell wall formation. The ability to measure, model and map foliar macronutrients (nitrogen (N), phosphorus (P), potassium (K), calcium (Ca) and magnesium (Mg)) at the forest canopy(More)
Both embryogenic and nonembryogenic calli of Picea abies (L.) Karst. were initiated from the hypocotyl region of immature embryos. The two callus phenotypes were manually separated and subsequently maintained independently, but under identical culture conditions. Biochemical analysis of the two phenotypes revealed significant differences in ethylene(More)