Lichen and bryophyte distribution on oak in London in relation to air pollution and bark acidity
| Autor: | R. S. Larsen, O.W. Purvis, P. J. Chimonides, Anja H. Tremper, Paul C. James, Fred Rumsey, J.N.B. Bell |
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| Rok vydání: | 2007 |
| Předmět: |
Pollution
Lichens Health Toxicology and Mutagenesis media_common.quotation_subject Bryophyta Toxicology Quercus robur Quercus stomatognathic system Air Pollution London Botany skin and connective tissue diseases Lichen Ecosystem media_common integumentary system biology Ecology General Medicine Hydrogen-Ion Concentration biology.organism_classification Fagaceae stomatognathic diseases Geography visual_art Plant Bark visual_art.visual_art_medium Nitrogen Oxides Quercus petraea Bryophyte Bark Epiphyte Environmental Monitoring |
| Zdroj: | Environmental Pollution. 146:332-340 |
| ISSN: | 0269-7491 |
| Popis: | Epiphytic lichen and bryophyte distribution and frequency were investigated on the trunks of 145 young oak trees throughout London and surrounding counties, and compared with pollution levels and bark pH. Sixty-four lichen and four bryophyte species were recorded. Three major zones were identified: (i) two central regions with a few lichens, bryophytes absent; (ii) a surrounding region with a more diverse flora including a high cover of nitrophyte lichens; and (iii) an outer region, characterised by species absent from central London, including acidophytes. Nineteen species were correlated with nitrogen oxides and 16 with bark pH, suggesting that transport-related pollution and bark acidity influence lichen and bryophyte distribution in London today. Lichens and bryophytes are responding to factors that influence human and environmental health in London. Biomonitoring therefore has a practical role to assess the effects of measures to improve London's air quality. |
| Databáze: | OpenAIRE |
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