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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Munzi, Silvana Pisani, Tommaso Paoli, Luca Loppi, Stefano |
| Description | Country affiliation: Italy Author Affiliation: Munzi S ( Department of Environmental Science, University of Siena, via Mattioli 4, 53100 Siena, Italy. munzi@unisi.it) |
| Abstract | The present work aims at testing if exposure time and dose play a role in the response of lichen species to nitrogen (N) pollution. To this purpose, samples of the N-sensitive Evernia prunastri and the N-tolerant Xanthoria parietina were treated for 5 weeks either with solutions of NH(4)NO(3) 0.05 and 1 M, or (NH(4))(2)SO(4) 0.025 and 0.5 M. Photosynthetic efficiency was measured as an indicator of sample vitality. The results showed that the lowest concentrations were ineffective at the beginning, but after several supplies both compounds inhibited photosynthetic activity of E. prunastri. The highest concentrations had a deleterious effect, but with a temporal trend. For X. parietina no effect was found for the lowest concentrations, while the same trend shown by E. prunastri was instead observed following treatments with the highest concentrations. It was concluded that the response of lichens to N supply is not only species-specific, but also time- and dose-dependent. The results give a clue on field studies on the relationships between lichens and N pollution. |
| File Format | HTM / HTML |
| ISSN | 01476513 |
| Issue Number | 7 |
| Volume Number | 73 |
| e-ISSN | 10902414 |
| Journal | Ecotoxicology and Environmental Safety |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2010-10-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Sciences Environmental Monitoring Methods Environmental Pollutants Toxicity Lichens Drug Effects Nitrogen Photosynthesis Ammonium Sulfate Analysis Of Variance Dose-response Relationship, Drug Statistics & Numerical Data Nitrates Species Specificity Time Factors Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pollution Health, Toxicology and Mutagenesis Public Health, Environmental and Occupational Health |
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