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Large Lakes - Ecological Structure and Function (Paperback, Softcover reprint of the original 1st ed. 1990)
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Large Lakes - Ecological Structure and Function (Paperback, Softcover reprint of the original 1st ed. 1990)
Series: Brock Springer Series in Contemporary Bioscience
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The vast majority of the world's lakes are small in size and short
lived in geological terms. Only 253 of the thousands of lakes on
this planet have surface areas larger than 500 square kilometers.
At first sight, this statistic would seem to indicate that large
lakes are relatively unimportant on a global scale; in fact,
however, large lakes contain the bulk of the liquid surface
freshwater of the earth. Just Lake Baikal and the Laurentian Great
Lakes alone contain more than 38% of the world's total liquid
freshwater. Thus, the large lakes of the world accentuate an
important feature of the earth's freshwater reserves-its extremely
irregular distribution. The energy crisis of the 1970s and 1980s
made us aware of the fact that we live on a spaceship with finite,
that is, exhaustible resources. On the other hand, the energy
crisis led to an overemphasis on all the issues concerning energy
supply and all the problems connected with producing new energy.
The energy crisis also led us to ignore strong evidence suggesting
that water of appropriate quality to be used as a resouce will be
used up more quickly than energy will. Although in principle water
is a "renewable resource," the world's water reserves are
diminishing in two fashions, the effects of which are
multiplicative: enhanced consumption and accelerated degradation of
quality.
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