Swanson, A/ Fahselt, D/ Smith, D 1996: Phenolic levels in Umbilicaria americana in relation to enzyme polymorphism, altitude and sampling date. - Lichenologist28(4): 331-339. [RLL List # 164 / Rec.# 18068] Keywords: ALTITUDE/ CHEMICAL CONCENTRATIONS/ CHEMICAL ECOLOGY/ CHEMISTRY ROLE/ ENZYME POLYMORPHISMS/ PHENOLICS/ UMBILICARIA/ UV LIGHT
Abstract: 3 fig. 2 tab. ["A significant negative correlation was found between the quantity of acetone extractable phenolic compounds and the degree of enzyme polymorphism in eight eastern North American populations of Umbilicaria americana."]