Fifth Year Review of Canada-United States Great Lakes Water Quality Agreement PDF Download
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Author: International Joint Commission. Task Group III.
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 104
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Book Description
Author: International Joint Commission. Task Group III.
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 104
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Book Description
Author:
Publisher: National Academies
ISBN:
Category : Environmental policy
Languages : en
Pages : 188
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Book Description
Author: Lee Botts
Publisher: Dave Dempsey Environmental
ISBN:
Category : Nature
Languages : en
Pages : 404
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Book Description
Water quality concerns are not new to the Great Lakes. They emerged early in the 20th century, in 1909, and matured in 1972 and 1978. They remain a prominent part of today's conflicted politics and advancing industrial growth. The Great Lakes Water Quality Agreement, under the Boundary Waters Treaty of 1909, became a model to the world for environmental management across an international boundary. Evolution of the Great Lakes Water Quality Agreement recounts this historic binational relationship, an agreement intended to protect the fragile Great Lakes. One strength of the agreement is its flexibility, which includes a requirement for periodic review that allows modification as problems are solved, conditions change, or scientific research reveals new problems. The first progress was made in the 1970s in the area of eutrophication, the process by which lakes gradually age, which normally takes thousands of years to progress, but is accelerated by modern water pollution. The binational agreement led to the successful lowering of phosphorus levels that saved Lake Erie and prevented accelerated eutrophication in the rest of the Great Lakes ecosystem. Another major success at the time was the identification and lowering of the levels of toxic contaminants that cause major threats to human and wildlife health, from accumulating PCBs and other persistent organic pollutants
Author: International Joint Commission
Publisher:
ISBN:
Category : Water quality
Languages : en
Pages : 16
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Book Description
Author: United States. Congress. Senate. Committee on Governmental Affairs. Subcommittee on Oversight of Government Management
Publisher:
ISBN:
Category : Environmental policy
Languages : en
Pages : 232
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Book Description
Author: United States. Congress. Senate. Committee on Governmental Affairs. Subcommittee on Oversight of Government Management
Publisher:
ISBN:
Category : Environmental policy
Languages : en
Pages : 312
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 532
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Book Description
Author:
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 932
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Book Description
The official monthly record of United States foreign policy.
Author:
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 36
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Book Description
Author: Bruce J. Neilson
Publisher: Springer Science & Business Media
ISBN: 146125826X
Category : Science
Languages : en
Pages : 640
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Book Description
Estuaries are eternally enriched. Their positions at the foot of watersheds and their convenience as receiving bodies for the wastes of cites, towns and farms results in continuous addition of nutrients - those elements and compounds which are essential for organic production. Such materials must be added to these complex bodies of water to sustain production, since there is a net loss of water and its contents to the oceans. Enrichment from land and the ocean and the subsequent cycling of the original chemicals or their derivatives contribute to the extraordinarily high values of estuaries for human purposes. Many estuaries are able to assimilate large quantities of nutrients despite the great fluctuations which occur with variations in the flow from tributaries. The nutrients can be stored, incorporated in standing crops of plants, released, cycled and exported - and the system frequently achieves high production of plants and and animals without creation of any undesirable results of enrichment. Excessive enrichment with the same elements and compounds can, however, be highly detrimental to estuaries and their uses. Coastal cities are usually located on the estuaries which provided a harbor for the- and which now receive partially treated sewage and other wastes from the expanding population and industrial activity. Conversion of woodlands to agricultural use and the extensive application of fertilizers have resulted in the flow of large quantities of nutrients down the hill or slopes and eventually into the estuary.
