New records of rare and unusual coastal lichens from the US Pacific Northwest

Abstract

The hyper-maritime forests of the immediate coast, from San Francisco, California north to the Canadian border with Washington State, provide a unique habitat for unusual epiphytic lichens such as Byroria pseudocapillaris, B. spiralifera,

Evaluating Letharia vulpina transplants for bioindication of nitrogen deposition

“…In-situ sampling protocol. At the three plots where Letharia was present in-situ, we collected at least 10 g using SpeciPAK bags following the standard USFS lichen tissue collection approach (Geiser 2004). Collections were made from six or more locations up to 30 m away from the plot center, to spatially represent each plot.…”

“…In-situ sampling of Letharia to estimate throughfall N deposition via thallus N concentrations has been common in the western U.S.A. (Bermejo-Orduna et al 2014;Hutten 2015;Jovan & Carlberg 2007;Root et al 2013). The method has been applied by land managers in this region (Geiser 2004;Jovan et al 2021). Letharia and other epiphytic lichens represent atmospheric deposition because their survival depends on acquiring water and nutrients solely from atmospheric sources.…”