Record Display for the EPA National Library Catalog

RECORD NUMBER: 28 OF 368

Main Title Altitudinal Variation of Chlorophyll Concentration and Reflectance of the Bark of 'Populus tremuloides.'
Author Covingto, William W. ;
CORP Author New Mexico Univ., Albuquerque. Dept. of Biology.
Year Published 1972
Report Number OWRR-A-039-NMEX; 04977,; A-039-NMEX(1)
Stock Number PB-228 873
Additional Subjects Plant ecology ; Forest trees ; Plant physiology ; Mountains ; Photosynthesis ; Altitude ; Plant tissues ; Reflection ; Chlorophylls ; Sangre de Cristo Mountains ; New Mexico ; Theses ; Populus tremuloides ; Corticular photosynthesis
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NTIS  PB-228 873 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 35p
Abstract
Chlorophyll concentration and reflectance of bark samples of Populus tremuloides Michx. growing at various elevations in the Sangre de Cristo mountain range of New Mexico indicate that the appearance of greener barked trees at higher elevations is due to the reflectance characteristics of a bloom of dead periderm cells and not to increased chlorophyll concentrations. Chlorophyll concentrations in aspen bark were, in fact, inversely correlated with altitude.