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Books > Professional & Technical > Agriculture & farming > Agricultural science
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Trends in Levels and Effects of Persistent Toxic Substances in the Great Lakes - Articles from the Workshop on Environmental Results, hosted in Windsor, Ontario, by the Great Lakes Science Advisory Board of the International Joint Commission, September 12 and 13, 1996 (Paperback, Softcover reprint of the original 1st ed. 1998)
Loot Price: R4,436
Discovery Miles 44 360
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Trends in Levels and Effects of Persistent Toxic Substances in the Great Lakes - Articles from the Workshop on Environmental Results, hosted in Windsor, Ontario, by the Great Lakes Science Advisory Board of the International Joint Commission, September 12 and 13, 1996 (Paperback, Softcover reprint of the original 1st ed. 1998)
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`Are the Great Lakes getting better or worse?' This is the question
that the public, scientists and managers are asking the
International Joint Commission after a quarter-century of
cooperative action by the United States and Canadian governments to
clean up the Great Lakes. This volume contains papers from the
workshop on Environmental Results, hosted in Windsor, Ontario, by
the Great Lakes Science Advisory Board of the International Joint
Commission, on September 12 and 13, 1996. The Great Lakes have been
through almost a century of severe pollution from the manufacture,
use and disposal of chemicals. In the 1960s wildlife biologists
started to investigate the outbreaks of reproductive failure in
fish-eating birds and ranch mink and to link these to exposure to
organochlorine compounds. Human health researchers in the 1980s and
1990s linked growth retardation, behavioral anomalies and deficits
in cognitive development with maternal consumption of Great Lakes
fish prior to pregnancy. The Great Lakes became the laboratory
where the theory of endocrine disruptors was first formulated. Now
a group of Great Lakes scientists, hosted by the International
Joint Commission, has compiled the story of the trends in the
concentrations and effects of persistent toxic substances on
wildlife and humans. The technical papers review the suitability of
various organisms as indicators, and present the results of
long-term monitoring of the concentrations and of the incidence of
effects. The evidence shows that there was an enormous improvement
in the late 1970s, but that in the late 1990s there are still
concentrations of some persistent toxic substances that have
stubbornly remained at levels that continue to cause toxicological
effects.
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