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Abstract Detail


Bryological and Lichenological Section/ABLS

Harris, Tanner [1], Olday, Fred [1], Rajakaruna, Nishanta [1].

Lichens of a Peridotite Outcrop in Eastern North America: An Investigation into the Lichen-Serpentine Relation.

DESPITE a large body of work on the serpentine-substrate effect on vascular plants, little work has been undertaken to elucidate the possible substrate effect of lichens growing on serpentine and related soils. Most work has been conducted in Europe and Western North America. Only one study to date has examined the lichen flora of a serpentine outcrop in Eastern North America. This paper examines the lichen flora of a peridotite outcrop from Deer Isle, Maine, USA. The lichen flora is presented along with relevant ecological and geochemical data. Sixty-three species in thirty-six genera were found. Sixteen species previously undocumented from ultramafic substrates are reported, including one genus, Lobaria (Schreber) Hoffm. One regionally rare species, Psorula rufonigra (Tuck.) Gotth. Schneider, is reported from two localities on the outcrop.


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1 - College of The Atlantic, 105 Eden Street, Bar Harbor, Maine, 04609, USA

Keywords:
serpentine
ultramafic
peridotite
substrate effect
lichen
Psorula rufonigra.

Presentation Type: Array
Session: 53-7
Location: 266/Holt
Date: Tuesday, August 1st, 2006
Time: 3:45 PM
Abstract ID:728


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