Ecological aspects of air pollution from an iron-sintering plant at Wawa, Ontario

Alan G. Gordon, Eville Gorham

Research output: Contribution to journalArticle

Abstract

At Wawa, in northern Ontario, vegetation has been damaged severely by sulphur dioxide pollution from an iron-sintering plant. Damage is mainly restricted to a narrow strip northeast from the sinter plant, since southwest winds are strongly predominant. It is traceable from the air for at least 20 miles in this direction and is estimated as severe within 11 miles and very severe within 5 miles. Within about 10 miles NE. from the sinter plant ground flora variety declines markedly, from about 20-40 species per 40 square meter quadrat beyond this distance to 0-1 species within 2 miles of the pollution source. At the same time sulphate in lake and pond waters increases greatly, from normal levels of about 0.2-0.3 milliequivalents per liter to more than 0.5 meq/l. within 11 miles NE. and up to 2 neq/l. within 2 miles NE. from the sinter plant. Water within about 5 miles NE. are strongly acid (pH 3.2-3.8), but are not low in calcium. Soluble sulphate in the surface soil rises sharply within about 4 miles NE. from the pollution source, where, also, soil erosion is very pronounced, though traceable farther out. The phanerograms most tolerant of air pollution are Polygonum cilinode and Sambucus pub ens, which are infrequent in the normal forest vegetation. In quadrat studies along a northeast transect, seedlings of Pinus strobus were not observed within 30 miles from the sinter plants, while those of Picea glauca, P. mariana, and Populus tremuloides were not recorded within 15 miles.
Original languageUndefined/Unknown
Pages (from-to)1063-1078
Number of pages16
JournalCanadian Journal of Botany
Volume41
Issue number7
StatePublished - 1963

Keywords

  • ffects of metal smelter pollution on aquatic and terrestrial ecosystems

Cite this

Ecological aspects of air pollution from an iron-sintering plant at Wawa, Ontario. / Gordon, Alan G.; Gorham, Eville.

In: Canadian Journal of Botany, Vol. 41, No. 7, 1963, p. 1063-1078.

Research output: Contribution to journalArticle

@article{d6f0a449a2cb48158b3735e0573fc61c,
title = "Ecological aspects of air pollution from an iron-sintering plant at Wawa, Ontario",
abstract = "At Wawa, in northern Ontario, vegetation has been damaged severely by sulphur dioxide pollution from an iron-sintering plant. Damage is mainly restricted to a narrow strip northeast from the sinter plant, since southwest winds are strongly predominant. It is traceable from the air for at least 20 miles in this direction and is estimated as severe within 11 miles and very severe within 5 miles. Within about 10 miles NE. from the sinter plant ground flora variety declines markedly, from about 20-40 species per 40 square meter quadrat beyond this distance to 0-1 species within 2 miles of the pollution source. At the same time sulphate in lake and pond waters increases greatly, from normal levels of about 0.2-0.3 milliequivalents per liter to more than 0.5 meq/l. within 11 miles NE. and up to 2 neq/l. within 2 miles NE. from the sinter plant. Water within about 5 miles NE. are strongly acid (pH 3.2-3.8), but are not low in calcium. Soluble sulphate in the surface soil rises sharply within about 4 miles NE. from the pollution source, where, also, soil erosion is very pronounced, though traceable farther out. The phanerograms most tolerant of air pollution are Polygonum cilinode and Sambucus pub ens, which are infrequent in the normal forest vegetation. In quadrat studies along a northeast transect, seedlings of Pinus strobus were not observed within 30 miles from the sinter plants, while those of Picea glauca, P. mariana, and Populus tremuloides were not recorded within 15 miles.",
keywords = "ffects of metal smelter pollution on aquatic and terrestrial ecosystems",
author = "Gordon, {Alan G.} and Eville Gorham",
year = "1963",
language = "Undefined/Unknown",
volume = "41",
pages = "1063--1078",
journal = "Botany",
issn = "1916-2790",
publisher = "National Research Council of Canada",
number = "7",

}

TY - JOUR

T1 - Ecological aspects of air pollution from an iron-sintering plant at Wawa, Ontario

AU - Gordon, Alan G.

AU - Gorham, Eville

PY - 1963

Y1 - 1963

N2 - At Wawa, in northern Ontario, vegetation has been damaged severely by sulphur dioxide pollution from an iron-sintering plant. Damage is mainly restricted to a narrow strip northeast from the sinter plant, since southwest winds are strongly predominant. It is traceable from the air for at least 20 miles in this direction and is estimated as severe within 11 miles and very severe within 5 miles. Within about 10 miles NE. from the sinter plant ground flora variety declines markedly, from about 20-40 species per 40 square meter quadrat beyond this distance to 0-1 species within 2 miles of the pollution source. At the same time sulphate in lake and pond waters increases greatly, from normal levels of about 0.2-0.3 milliequivalents per liter to more than 0.5 meq/l. within 11 miles NE. and up to 2 neq/l. within 2 miles NE. from the sinter plant. Water within about 5 miles NE. are strongly acid (pH 3.2-3.8), but are not low in calcium. Soluble sulphate in the surface soil rises sharply within about 4 miles NE. from the pollution source, where, also, soil erosion is very pronounced, though traceable farther out. The phanerograms most tolerant of air pollution are Polygonum cilinode and Sambucus pub ens, which are infrequent in the normal forest vegetation. In quadrat studies along a northeast transect, seedlings of Pinus strobus were not observed within 30 miles from the sinter plants, while those of Picea glauca, P. mariana, and Populus tremuloides were not recorded within 15 miles.

AB - At Wawa, in northern Ontario, vegetation has been damaged severely by sulphur dioxide pollution from an iron-sintering plant. Damage is mainly restricted to a narrow strip northeast from the sinter plant, since southwest winds are strongly predominant. It is traceable from the air for at least 20 miles in this direction and is estimated as severe within 11 miles and very severe within 5 miles. Within about 10 miles NE. from the sinter plant ground flora variety declines markedly, from about 20-40 species per 40 square meter quadrat beyond this distance to 0-1 species within 2 miles of the pollution source. At the same time sulphate in lake and pond waters increases greatly, from normal levels of about 0.2-0.3 milliequivalents per liter to more than 0.5 meq/l. within 11 miles NE. and up to 2 neq/l. within 2 miles NE. from the sinter plant. Water within about 5 miles NE. are strongly acid (pH 3.2-3.8), but are not low in calcium. Soluble sulphate in the surface soil rises sharply within about 4 miles NE. from the pollution source, where, also, soil erosion is very pronounced, though traceable farther out. The phanerograms most tolerant of air pollution are Polygonum cilinode and Sambucus pub ens, which are infrequent in the normal forest vegetation. In quadrat studies along a northeast transect, seedlings of Pinus strobus were not observed within 30 miles from the sinter plants, while those of Picea glauca, P. mariana, and Populus tremuloides were not recorded within 15 miles.

KW - ffects of metal smelter pollution on aquatic and terrestrial ecosystems

M3 - Article

VL - 41

SP - 1063

EP - 1078

JO - Botany

JF - Botany

SN - 1916-2790

IS - 7

ER -