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Section Two
Aliens Introduced to Hawai‘i by the Polynesians
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Thirsty crop
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A Very Thirsty Crop!

Irrigation flume, Onomea, Big Island, ca. 1935

120 gallons of water are needed to produce one pound of sugar!

The Hawaiian sugar industry would not have been possible without extensive irrigation systems that brought water from the wet valleys to the sun-drenched plains. By draining off much of the natural waterflow, these irrigation systems caused major changes to windward stream ecosystems.

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