Abstract
To get a quantitative view of the damage to lichens by industrial smoke emissions, the author has measured the percentage of area covered by lichens on mature aspens, diameter 200-400 mm, between 1 and 2 m above ground. 500 trees in 130 locations in central Gaestrikland were studied. A marked reduction in lichen cover is noticeable up to 10-15 km from the emission points. No difference in sensitivity between the most common lichens was noted. Proximity to lakes or plowed fields seems to counteract the smoke effect. Lichens on other trees are less sensitive to the smoke. Main roads and non-industrial settlements have no influence on the lichens treated here. 2 references, 1 figure.
Citation Formats
Sundstrom, E W.
Lichen density on bark of Populus tremula affected by industrial smoke emission. [Xanthoria; Parmelia; Physcia; Caloplaca; Lecanora].
Sweden: N. p.,
1973.
Web.
Sundstrom, E W.
Lichen density on bark of Populus tremula affected by industrial smoke emission. [Xanthoria; Parmelia; Physcia; Caloplaca; Lecanora].
Sweden.
Sundstrom, E W.
1973.
"Lichen density on bark of Populus tremula affected by industrial smoke emission. [Xanthoria; Parmelia; Physcia; Caloplaca; Lecanora]."
Sweden.
@misc{etde_6426847,
title = {Lichen density on bark of Populus tremula affected by industrial smoke emission. [Xanthoria; Parmelia; Physcia; Caloplaca; Lecanora]}
author = {Sundstrom, E W}
abstractNote = {To get a quantitative view of the damage to lichens by industrial smoke emissions, the author has measured the percentage of area covered by lichens on mature aspens, diameter 200-400 mm, between 1 and 2 m above ground. 500 trees in 130 locations in central Gaestrikland were studied. A marked reduction in lichen cover is noticeable up to 10-15 km from the emission points. No difference in sensitivity between the most common lichens was noted. Proximity to lakes or plowed fields seems to counteract the smoke effect. Lichens on other trees are less sensitive to the smoke. Main roads and non-industrial settlements have no influence on the lichens treated here. 2 references, 1 figure.}
journal = []
volume = {67:4}
journal type = {AC}
place = {Sweden}
year = {1973}
month = {Jan}
}
title = {Lichen density on bark of Populus tremula affected by industrial smoke emission. [Xanthoria; Parmelia; Physcia; Caloplaca; Lecanora]}
author = {Sundstrom, E W}
abstractNote = {To get a quantitative view of the damage to lichens by industrial smoke emissions, the author has measured the percentage of area covered by lichens on mature aspens, diameter 200-400 mm, between 1 and 2 m above ground. 500 trees in 130 locations in central Gaestrikland were studied. A marked reduction in lichen cover is noticeable up to 10-15 km from the emission points. No difference in sensitivity between the most common lichens was noted. Proximity to lakes or plowed fields seems to counteract the smoke effect. Lichens on other trees are less sensitive to the smoke. Main roads and non-industrial settlements have no influence on the lichens treated here. 2 references, 1 figure.}
journal = []
volume = {67:4}
journal type = {AC}
place = {Sweden}
year = {1973}
month = {Jan}
}