Effects of acute NH3 air pollution on N-sensitive and N-tolerant lichen species

Ecotoxicology and Environmental Safety
Luca PaoliStefano Loppi

Abstract

Lichens are sensitive to the presence of ammonia (NH3) in the environment. However, in order to use them as reliable indicators in biomonitoring studies, it is necessary to establish unequivocally the occurrence of certain symptoms following the exposure to NH3 in the environment. In this paper, we simulated an episode of acute air pollution due to the release of NH3. The biological effects of acute air pollution by atmospheric NH3 have been investigated using N-sensitive (Flavoparmelia caperata) and N-tolerant (Xanthoria parietina) species. Lichen samples were exposed to ecologically relevant NH3 concentrations for 8 weeks, simulating three areas of impact: a control area (2 μg/m(3)), an area of intermediate impact (2-35 μg/m(3)) and an area of high impact (10-315 μg/m(3)), with a peak of pollution reached between the fourth and fifth week. Ammonia affected both the photobiont and the mycobiont in F. caperata, while in X. parietina only the photosynthetic performance of the photobiont was altered after exposure to the highest concentration. In the photobiont of F. caperata we recorded chlorophyll degradation as indicated by OD435/415 ratio, decrease of the photosynthetic performance (as reflected by the maximum quantum yield o...Continue Reading

References

Jun 14, 2002·Die Naturwissenschaften·Moreno CocchiettoGianni Sava
Aug 28, 2007·International Journal of Occupational and Environmental Health·Md Hamidur RahmanBente E Moen
Jun 24, 2008·Ecotoxicology and Environmental Safety·Silvana MunziStefano Loppi
Mar 17, 2010·Environmental Pollution·Luca PaoliStefano Loppi
Aug 17, 2010·Ecotoxicology and Environmental Safety·Silvana MunziStefano Loppi
Jun 25, 2013·Environmental Pollution·L JonesE R B Oxley
Jan 22, 2014·Environmental Science and Pollution Research International·L PaoliStefano Loppi
Apr 22, 2014·Ecotoxicology and Environmental Safety·L PaoliS Loppi

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Citations

Oct 27, 2017·Metallomics : Integrated Biometal Science·Xulei HuangSam Fong Yau Li
Aug 28, 2020·Ecotoxicology and Environmental Safety·Deepak BalramNeethu Sebastian
Mar 1, 2017·Ecosphere·Therese S CarterMeredith G Hastings
Feb 15, 2019·The Science of the Total Environment·S MunziM A Sutton
Dec 7, 2021·Environmental Science. Processes & Impacts·Daniel NiepschGina Cavan

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