Early Spring Disturbing Life on Northern Rivers
By Cheryl Lyn Dybas
Special to The Washington Post
Monday, March 20, 2006; Page A05
THE GLEN, N.Y. -- The winter-old river ice is creaking and groaning, shifting position. Spring has come early to the frozen upper Hudson River, and ice-out is just around the corner.
Lilliputian wildflowers will soon line the Hudson's banks. In what are known as riverside ice meadows, an ancient cycle of ice formation and melting gives rise to swamp candles, ladies'-tresses, wood lilies and other rare, diminutive flowers.
In New York's Adirondack Mountains, ice that forms on the river in winter is pushed onto its banks in spring; there it scours the sloping cobble shores, keeping them free of shrubs and small trees and leaving space for wildflowers to sprout in fragile, arctic-like ice meadows.
But the future for these floral pixies, which depend on late-melting river ice, is bleak. The number of days of ice on northeastern rivers has declined significantly in recent winters, said hydrologist Glenn Hodgkins of the U.S. Geological Survey (USGS) Maine Water Science Center in Augusta.
The trend could spell disaster for the ice meadows. It also signals trouble ahead for endangered Atlantic salmon and other fish, for wetlands plants and animals, and for Northern economies, all of which are sustained by winters with icy rivers....
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