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Barbara Joan Spring

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Natural History

Publisher:  Independence Books ISBN-10:  1588517314 Type: 


Copyright:  2001

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Independence Books
The Dynamic Great Lakes

A book about changes in the Great Lakes ecosystems through natural forces and through changes caused by people.

Due to its success, The Dynamic Great Lakes has been re released by Independence Books. The book has been updated and the cover redesigned as a "Special Critically Acclaimed" edition.

Both university and public libraries have this book in their collections as well as many book stores.

The Dynamic Great Lakes describes changes in the Great Lakes through natural forces and changes caused by people in the past 200 years.

The Great Lakes are this planet's greatest freshwater system, about 20 per cent of all the fresh surface water in the world. Each chapter shows some important facts about these lakes: their fish, both native and planted, their exotic species, their sand dunes and marshes. Natural cycles, ice formation, turnover of water, water levels, and occasional seiches are part of these lakes natural phenomena. Readers are shown some solutions to ecological problems and then asked to think globally and act locally.




"Think globally,act locally."

Professional Reviews

An Engaging Guide to The Great Lakes
The Midwest Book Review, Vol. 12, No. 3

Wisconsin (3/29/2002) Written out of appreciation for a most marvelous natural ecosystem, The Dynamic Great Lakes by Barbara Spring is an excellently written, insightfully presented, and engaging guide to the true natures of Lake Superior, Lake Michigan, Lake Huron, Lake Erie and Lake Ontario. Chapters cover how the Great Lakes were formed, their physical characteristics and the history of their changes, problems that affect them today and offered solutions and more. An important contribution to our understanding of the Great Lakes system, The Dynamic Great Lakes is a wondrous and informative read, recommended for school and community library environmental studies reading lists and reference collections.

Unraveling the Mystery of the Great Lakes
Review by Norman Goldman

Many of us know very little about the five Great Lakes other than perhaps being able to name them. As Barbara Spring states in her introduction to her outstanding primer The Dynamic Great Lakes they are "a flowing river of seas left behind by Ice Age glaciers and are nearly twenty percent of the world's supply of fresh surface water; the world's greatest freshwater system." The ecosystem of this great body of water is very complex and unfortunately due to pollution and the fallout of modern industry and agriculture they have gone through a gradual transformation.

One of the unique characteristics of this compact book is that it is written in a language devoid of esoteric explanations. The eight chapters of the book reflect the author's teaching and journalistic aptitudes in knowing how to unravel the mystery of the Great Lakes and the many painful dangers it has faced and continues to face.

Each of the five Lakes is introduced with a brief synopsis of important elements distinguishing one from the other such as: elevation, length, breadth, average depth, maximum depth, volume, water area, retention time, population and outlet. From this point of departure the author deals with the various changes that have taken place as well as the various major issues affecting the Lakes. There are also brief descriptions of the various animal life found in each of the Lakes and how they have been affected by pollution and the appearance of harmful species, such as the Lamprey Eel.

However, we are also reminded throughout the reading of the book that "people power" can have an effect and if we band together and make our voices heard we could exert influence in reversing some of the harmful trends that have caused ecological disaster. For example we are apprised of the situation that occurred in relation to Lake Erie. In 1969 a tributary river of Lake Erie, the Cayahoga, caught on fire due to being heavily coated with oil and debris. As a result, the Federal Water Quality Administration launched a one and half billion dollar municipal sewage treatment program for the Erie Basin which included the five surrounding states: Michigan, Ohio, New York, Pennsylvania, and Indiana.

The conclusion of the book most appropriately reminds us that: "we are all challenged to use our knowledge, creativity and common sense to keep the Great Lakes great. Can you think of ways to think globally and act locally?" We are also warned " life on earth is only possible as long as our limited life support system works."

Norman Goldman

Articulate Stewards
The Dynamic Great Lakes gives us a perch from which to view the complex interactions between humans and the earth. From there, we can better understand and fulfill our responsibility to be articulate stewards of God's common wealth, the Space Ship Earth.
Rev. Karen Blatt, Restoring Creation

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