Lawrey, JD/ Hale, ME", Jr. 1979: Lichen growth response to stress induced by automobile exhaust pollution. - Science204: 423-424. [RLL List # 104-63 / Rec.# 11182] Keywords: AIR POLLUTION/ LEAD/ PASUDOPARMELIA/ AUTOMOBILE EXHAUST
Abstract: 1 figure. 2 tables. [Young thalli of Pseudoparmelia baltimorensis showed slower growth rates under conditions of a high atmospheric lead burden than those with lower lead burden. Larger thalli were not effected under the stress conditions. "Once a minimum thallus size is attained, the stress tolerance of the lichen increases."]