Elemental composition of Usnea sp lichen from Potter Peninsula, 25 de Mayo (King George) Island, Antarctica

Lichen as biomonitor of atmospheric elemental composition from Potter Peninsula, 25 de Mayo (King George) Island, Antarctica

“…The PCA of the Usnea sp., showed clearly a distinction of sampling sites, the sites near to Carlini Station (S1 to S5) had a major contribution of elements, which could related to the human activities like was shown in previous studies at the 25 de Mayo (King George) Island [1,2]. The reported results in this work together with our data from the two previous sampling campaigns showed the same trends about the element effects on antrophic and ASPA area [10]. A great variation in the element concentrations was observed in all champagnes, the coeffi cient of variation lower than 50% was found for as and Br, K and Se (Supplementary Data, Table 2).…”

“…The ACP-graphic in Figure 3 includes Al and Pb contents producing the spread of sampling sites in slightly different way to presented by [10], where S2 is in other different quadrant that S1, S4 and S5.…”

“…Saxicolous and terricolous lichens were collected during austral summer since 2011 to 2014, at eight different sites of Potter Peninsula (Figure 1). The sampled material was based on the availability of access and the possibility to evaluate anthropic impact [10]. According to the different human activities, three sites were considered: Carlini Station (S1), heliport (S2) and water dam (S4); intermediate points to the east (S3) close to the Tres Hermanos hill, and (S5) at the southeast of Carlini Station close to Warszawa Icefi eld.…”

“…The element contents in lichens from Antarctica are widely reported in the literature, in particular several works reported the elemental composition in lichens from 25 de Mayo (King George) Island, South Shetland Islands, Antarctica [2,9,10].…”

Determination of element composition and extraterrestrial material occurrence in moss and lichen samples from King George Island (Antarctica) using reactor neutron activation analysis and SEM microscopy

“…Varueal Peak was a sampling site with highest Cu concentration and Lions Ramp with Cr and Ni. Median values of heavy metal concentration in lichen and moss samples from King George Island can be compared with values from Norway (Steinnes 2005 ; Barandovski et al 2006 ), reference plant model (Markert 1991 ), and literature data for Antarctic region (Bargagli et al 1999 ; Bargagli et al 2000 ; Gonzáles et al 2002 ; Smykla et al 2005 ; Lim et al 2009 ; Osyczka et al 2007 ; Zvěřina et al 2014 ; Bubach et al 2016 ) (Tables 6 and 7 ).…”