title: Behaviour of different lichen species as biomonitors of air pollution by PAHs in natural ecosystems.
abstract: Six different species of lichens (Parmelia sulcata Tayl., Evernia prunastri (L.) Ach., Ramalina farinacea, Pseudevernia furfuracea (L.) Zopf., Usnea sp. and Lobaria pulmonaria (Schreb.) Hoffm.) were collected in two mountain valleys in Central Pyrenees: the Aspe and Aragon valleys. Two multivariate techniques have been applied with different purposes, ANOVA and Discriminant Analysis (DA), to evaluate the data. The PAHs spatial distribution was studied in the three more abundant and widespread species in the area: P. sulcata, E. prunastri (L.) Ach. and R. farinacea in terms of total PAHs, PAHs related to the combustion processes and toxicity. Different behaviour of each lichen species to trap PAHs was found, being P. sulcata the best one to monitor the most persistent PAHs of pyrogenic origin and E. prunastri the most appropriate to provide information about pyrogenic and petrogenic PAHs. Traffic was the most relevant influence in PAHs bioaccumulation in lichen species.
authors.affiliation: Grupo GUIA-Instituto de Investigación de Ingeniería en Aragón (I3A), Centro Politécnico Superior (CPS), María de Luna 3, 50018, Zaragoza, Spain.
authors.forename: María
authors.initials: M
authors.lastname: Blasco
authors.forename: Celia
authors.initials: C
authors.lastname: Domeño
authors.forename: Patricia
authors.initials: P
authors.lastname: López
authors.forename: Cristina
authors.initials: C
authors.lastname: Nerín
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000706:statistics & numerical data; D001203:Ascomycota / Q000737:chemistry / Q000254:growth & development*; D017753:Ecosystem; D004784:Environmental Monitoring / Q000379:methods*; D008011:Lichens / Q000737:chemistry / Q000254:growth & development*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D013045:Species Specificity
chemical_list: D000393:Air Pollutants; D011084:Polycyclic Aromatic Hydrocarbons